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Journal articles on the topic 'Charmed B_s^0 decays'

Author: Grafiati

Published: 28 February 2024

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1

LIU, JIAFU, LINGDE WAN, and GONGRU LU. "CP-VIOLATING EFFECTS IN SOME TWO-BODY BARYONIC DECAYS OF $B_s^0 - \bar B_s^0 $ MESONS." Modern Physics Letters A 07, no. 34 (1992): 3215–27. http://dx.doi.org/10.1142/s0217732392002603.

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The partial-decay-rate asymmetries indicating the CP-violating effects in [Formula: see text] decays into two-body baryons are examined within the Kobayashi-Maskawa model. The branching ratios of the decays and the numbers of [Formula: see text] pairs needed for testing these effects are estimated. It turns out that the CP violation asymmetries and the branching ratios are generally small and it is difficult to test the effects in experiments.

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2

JIANG, YUE, GUO-LI WANG, TIANHONG WANG, WAN-LI JU, and HUI-FENG FU. "NONLEPTONIC PRODUCTION OF CHARMED P-WAVE MESONS FROM $\bar B^{0}_s$ AND $\bar B^0$ DECAYS." International Journal of Modern Physics A 28, no. 21 (2013): 1350110. http://dx.doi.org/10.1142/s0217751x13501108.

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The nonleptonic decays from [Formula: see text] and [Formula: see text] to an orbitally excited P-wave charmed meson are studied within the naive factorization hypothesis. Based on the Mandelstam formalism, and under the framework of the improved Bethe–Salpeter method, the hadronic matrix elements of the decays [Formula: see text] and [Formula: see text] are calculated, in which nonperturbative QCD effects are well considered by overlapping integral over the relativistic Salpeter wave functions of initial and final states. Some of these decays have sizable branching fractions and are expected

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3

Abbiendi et al., G. "A study of $\mathrm{B_s^0}$ meson oscillation using hadronic $\mathrm Z^0$ decays containing leptons." European Physical Journal C 11, no. 4 (1999): 587–98. http://dx.doi.org/10.1007/s100529900206.

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4

Barate et al., R. "Study of ${\rm B_s^0}$ oscillations and lifetime using fully reconstructed ${\rm D_s^-}$ decays." European Physical Journal C 4, no. 3 (1998): 367–85. http://dx.doi.org/10.1007/s100529800903.

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5

Amorós, G., S. Noguera, and J. Portolés. "Semileptonic decays of charmed mesons in the effective action of QCD." European Physical Journal C 27, no. 2 (2003): 243–54. http://dx.doi.org/10.1140/epjc/s2002-01116-0.

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6

Li, Ying. "Branching fractions and direct CP asymmetries of $$\bar B_s^0 \to K^0 h^ + h'^ - (h^{(')} = K,\pi )$$ decays." Science China Physics, Mechanics & Astronomy 58, no. 3 (2014): 1–9. http://dx.doi.org/10.1007/s11433-014-5581-3.

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7

Maevskiy, A. S. "Measurement of CP-violation parameters in decays of $B_s^0 \to J/\psi \phi $ with the ATLAS detector." Journal of Physics: Conference Series 798 (January 2017): 012095. http://dx.doi.org/10.1088/1742-6596/798/1/012095.

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8

Cui, Bo-Yan, and Ya-Hui Chen. "Contributions of K 0 ∗ 1430 and K 0 ∗ 1950 in the Charmed Three-Body B Meson Decays." Advances in High Energy Physics 2023 (June 7, 2023): 1–10. http://dx.doi.org/10.1155/2023/9408422.

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In this work, we investigate the resonant contributions of K 0 ∗ 1430 and K 0 ∗ 1950 in the three-body B s ⟶ D s K π within the perturbative QCD approach. The form factor F k π s is adopted to describe the nonperturbative dynamics of the S-wave K π system. The branching ratios of all concerned decays are calculated and predicted to be in the order of 1 0 − 10 to 1 0 − 5 . The ratio R of branching fractions between B 0 ⟶ D ¯ 0 K 0 ∗ 0 1430 ⟶ D ¯ 0 K + π − and B s 0 ⟶ D ¯ 0 K ¯ 0 ∗ 0 1430 ⟶ D ¯ 0 K − π + is predicted to be 0.0552, which implies the discrepancy for the LHCb measurements. We expec

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9

Sadhu, Samrangy. "Study of in-Medium Energy Loss with Heavy-Flavour Correlations in pp and Pb-Pb Collisions with ALICE at the LHC." Proceedings 10, no. 1 (2019): 43. http://dx.doi.org/10.3390/proceedings2019010043.

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The azimuthal correlations between heavy-flavour hadrons or heavy-flavour decay electrons with charged particles in Pb-Pb collisions give insight on the modification of charm-jet properties in nucleus-nucleus collisions and the mechanisms through which heavy quarks in-medium energy-loss takes place. Studies in pp collisions, besides constituting the necessary baseline for nucleus-nucleus measurements, are important for testing expectations from pQCD-inspired Monte Carlo generators. In ALICE heavy-flavour hadrons are studied via their fully reconstructed hadronic decays (D mesons and Λ c baryon

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10

Tang, Shi-Shuai, Long-Ke Li, Xing-Yu Zhou, and Cheng-Ping Shen. "Recent Measurements of Decay Asymmetry Parameter and CP Asymmetry for Charmed Baryon Decays at Belle." Symmetry 15, no. 1 (2022): 91. http://dx.doi.org/10.3390/sym15010091.

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We review the recent results from the Belle experiment on the measurements of branching fractions and decay asymmetry parameters (α) for the hadronic weak decays of charmed baryons, including Λc+→B+P: Λc+→(Λ,Σ0)h+ (h=π,K) and Λc+→Σ+(π0,η,η′); Ξc0→B+P: Ξc0→Ξ−π+; Ξc0→B+V: Ξc0→ΛK¯*0, Ξc0→Σ0K¯*0, and Ξc0→Σ+K*−. In addition, we present an overview of the searches for CP violation via the α-induced CP asymmetry for Λc+→(Λ,Σ0)h+ and Ξc0→Ξ−π+. Finally, we discuss the promising decay modes of Ωc0 which can be measured in the near future and are indispensable in searching for CP violation in the charm s

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11

SOYEUR, MADELEINE, and MATTHIAS F. M. LUTZ. "DYNAMICS OF STRONG AND RADIATIVE DECAYS OF Ds MESONS." International Journal of Modern Physics A 24, no. 02n03 (2009): 417–21. http://dx.doi.org/10.1142/s0217751x09043754.

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The positive parity scalar [Formula: see text] and axial-vector [Formula: see text] charmed strange mesons are generated by coupled-channel dynamics through the s-wave scattering of Goldstone bosons off the pseudoscalar and vector D ( D s)-meson ground states. The attraction leading to the specific masses of these states reflects the chiral symmetry breaking scale which characterizes the Weinberg-Tomozawa interaction in the chiral Lagrangian. Chiral corrections to order [Formula: see text] are calculated and found to be small. The [Formula: see text] and [Formula: see text] mesons decay either

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12

Zheng, Yangheng. "Rare B meson decays to charmed final states at Belle $(B\to D^{(*)} K^-, B^0\to D^+_s \pi^-)$." International Journal of Modern Physics A 16, supp01a (2001): 464–67. http://dx.doi.org/10.1142/s0217751x01007224.

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We report observations of the Cabibbo-suppressed decays B→ D(*)K and an upper limit for the decay branching fraction for [Formula: see text] using a 5.3fb-1 data sample accumulated at the ϒ(4S) resonance with the Belle detector at the KEKB e+e- asymmetric collider.

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13

Bala, Renu. "Measurement of Open Heavy-Flavour Production in pp and p–Pb Collisions with ALICE at the LHC." International Journal of Modern Physics: Conference Series 46 (January 2018): 1860019. http://dx.doi.org/10.1142/s2010194518600194.

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The Large Hadron Collider at CERN allows us to study heavy-ion collisions at an un- precedented energy. ALICE, A Large Ion Collider Experiment, is the experiment ded- icated to the investigation of heavy-ion collisions. In this contribution, recent open heavy-flavour results from pp collisions at [Formula: see text]= 5.02, 7, 8 and 13 TeV and p–Pb collisions at [Formula: see text] = 5.02 TeV, collected with the ALICE detector during the LHC Run-1 and Run-2 are presented. The results include the production cross section, nuclear modification factor and multiplicity dependence studies of product

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14

Mahmood, Shakeel, Farida Tahir та Azeem Mir. "Interference of Nonstandard Interactions with Standard Model in $${B^0} \to {\pi ^0}\bar vv$$ B 0 → π 0 v ¯ v , $$B_c^ - \to {D^ - }\bar vv$$ B c − → D − v ¯ v and $$\bar B_s^0 \to {K^0}\bar vv$$ B ¯ s 0 → K 0 v ¯ v Decays". Physics of Particles and Nuclei Letters 15, № 3 (2018): 240–46. http://dx.doi.org/10.1134/s1547477118030135.

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15

Huang, Fei, and Qi-An Zhang. "Angular distributions for multi-body semileptonic charmed baryon decays." European Physical Journal C 82, no. 1 (2022). http://dx.doi.org/10.1140/epjc/s10052-021-09779-1.

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AbstractWe perform an analysis of angular distributions in semileptonic decays of charmed baryons $$B_1^{(\prime )}\rightarrow B_2^{(\prime )}(\rightarrow B_3^{(\prime )}B_4^{(\prime )})\ell ^+\nu _{\ell }$$ B 1 ( ′ ) → B 2 ( ′ ) ( → B 3 ( ′ ) B 4 ( ′ ) ) ℓ + ν ℓ , where the $$B_1{=}(\Lambda _c^+,\Xi _c^{(0,+)})$$ B 1 = ( Λ c + , Ξ c ( 0 , + ) ) are the SU(3)-antitriplet baryons and $$B_1'{=}\Omega _c^-$$ B 1 ′ = Ω c - is an SU(3) sextet. We will firstly derive analytic expressions for angular distributions using the helicity amplitude technique. Based on the lattice quantum chromodynamics (QC

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16

Ma, Ai-Jun, and Wen-Fei Wang. "Resonances $\rho(1450)^+$ and $\rho(1700)^+$ in the $B \to D KK$ decays." Chinese Physics C, January 19, 2022. http://dx.doi.org/10.1088/1674-1137/ac4cb5.

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Abstract The contributions for kaon pair from the intermediate states $\rho(1450)^+$ and $\rho(1700)^+$ in the decays of $B^+ \to \bar{D}^0 K^+ \bar{K}^0$, $B^0 \to D^- K^+ \bar{K}^0$ and $B_s^0 \to D_s^-K^+ \bar{K}^0$ are analyzed within the perturbative QCD factorization approach. The decay amplitudes for all concerned decays in this work are dominated by the factorizable Feynman diagrams with the emission of the kaon pair, and the charged $\rho$ mesons should be of great importance in the $KK$ channel of the related three-body $B$ decays. Besides, these quasi-two-body decays are CKM-favored

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17

Alok, Ashutosh Kumar, Neetu Raj Singh Chundawat, and Dinesh Kumar. "Impact of $$b \rightarrow s \ell \ell $$ anomalies on rare charm decays in non-universal $$Z'$$ models." European Physical Journal C 82, no. 1 (2022). http://dx.doi.org/10.1140/epjc/s10052-021-09975-z.

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AbstractIn this work, we study the impact of $$b \rightarrow s \ell \ell $$ b → s ℓ ℓ , $$B_s - \bar{B_s}$$ B s - B s ¯ mixing and neutrino trident measurements on observables in decays induced by $$c \rightarrow u $$ c → u transition in the context of a non-universal $$Z'$$ Z ′ model which generates $$C^{\mathrm{NP}}_{9} <0$$ C 9 NP < 0 and $$C^{\mathrm{NP}}_9 = - \,C^{\mathrm{NP}}_{10} $$ C 9 NP = - C 10 NP new physics scenarios at the tree level. We inspect the effects on $$D^0 \rightarrow \pi ^0 \nu {\bar{\nu }}$$ D 0 → π 0 ν ν ¯ , $$D^+ \rightarrow \pi ^+ \nu {\bar{\nu }}$$ D + → π

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18

Wang, Hao-Nan, Li-Sheng Geng, Qian Wang, and Ju-Jun Xie. "Molecular nature of $X(3872)$ in $B^0 \to K^0 X(3872)$ and $B^+ \to K^+ X(3872)$ decays." Chinese Physics Letters, January 3, 2023. http://dx.doi.org/10.1088/0256-307x/40/2/021301.

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Abstract We investigate the decays of $B^0 \to K^0 X(3872)$ and $B^+ \to K^+ X(3872)$ based on the picture where the $X(3872)$ resonance is strongly coupled to the $D\bar{D}^* + c.c.$ channel. In addition to the decay mechanism where the $X(3872)$ resonance is formed from the $c\bar{c}$ pair hadronization with the short-distance interaction, we have also considered the $D\bar{D}^*$ rescattering diagrams in the long-distance scale, where $D$ and $\bar{D}^*$ are formed from $c$ and $\bar{c}$ separately. Because of the difference of the mass thresholds of charged and neutral $D\bar{D}^*$ channels

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19

Aaij, R., C. Abellán Beteta, T. Ackernley, et al. "Observation of CP violation in two-body $$ {B}_{(s)}^0 $$-meson decays to charged pions and kaons." Journal of High Energy Physics 2021, no. 3 (2021). http://dx.doi.org/10.1007/jhep03(2021)075.

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Abstract The time-dependent CP asymmetries of B0→ π+π− and $$ {B}_s^0 $$ B s 0 → K+K− decays are measured using a data sample of pp collisions corresponding to an integrated luminosity of 1.9 fb−1, collected with the LHCb detector at a centre-of-mass energy of 13 TeV. The results are$$ {\displaystyle \begin{array}{c}{C}_{\pi \pi}=-0.311\pm 0.045\pm 0.015,\\ {}{S}_{\pi \pi}=-0.706\pm 0.042\pm 0.013,\\ {}{C}_{KK}=0.123\pm 0.034\pm 0.015,\\ {}{S}_{KK}=0.164\pm 0.034\pm 0.014,\\ {}{\mathcal{A}}_{KK}^{\Delta \varGamma }=-0.83\pm 0.05\pm 0.09,\end{array}} $$ C ππ = − 0.311 ± 0.045 ± 0.015 , S ππ = −

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20

Li, Yuan, Ying-Bo He, Xiao-Hai Liu, Baoyi Chen, and Hong-Wei Ke. "Searching for doubly charmed tetraquark candidates $$T_{cc}$$ and $$T_{cc\bar{s}}$$ in $$B_c$$ decays." European Physical Journal C 83, no. 3 (2023). http://dx.doi.org/10.1140/epjc/s10052-023-11408-y.

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AbstractIn this work, we propose to search for the exotic doubly charmed meson $$T_{cc}^+$$ T cc + and its analog $$T_{cc\bar{s}}^+$$ T c c s ¯ + in $$B_c^+$$ B c + decays, which provide a good environment for the formation of the exotic state containing double charm quarks. Within the molecular scheme, the production of $$T_{cc}^+$$ T cc + and $$T_{cc\bar{s}}^+$$ T c c s ¯ + through various rescattering processes with different intermediate states are investigated. For the moderate values of model parameters, the branching ratios of $$B_c^+$$ B c + decaying into $$T_{cc}^+ \bar{D}^{0}$$ T cc

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21

Liu, Zhao-Wu, Zhi-Tian Zou, Ying Li, Xin Liu, and Jie Wang. "Charmless $$B_s\rightarrow V S$$ decays in PQCD approach." European Physical Journal C 82, no. 1 (2022). http://dx.doi.org/10.1140/epjc/s10052-022-10016-6.

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AbstractIn this work, we investigate the $$B_s\rightarrow V S$$ B s → V S decays in the perturbative QCD approach, where V and S denote the vector meson and scalar meson respectively. Based on the two-quark structure, considering two different scenarios for describing the scalar mesons, we calculate the branching fractions and the direct CP asymmetries of all $$B_s\rightarrow VS$$ B s → V S decays. Most branching fractions are predicted to be at $$10^{-7}$$ 10 - 7 to $$10^{-5}$$ 10 - 5 , which could be measured in the LHCb and Belle-II experiments, especially for these color-allowed decays $$B

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22

Chen, Hai-Xiang, Sheng-Kai Cui, Ning-Yu Zhu, Zhao-Yang Zhang, and Huai-Cong Hu. "B meson rare decays in the TNMSSM." Chinese Physics C, February 19, 2024. http://dx.doi.org/10.1088/1674-1137/ad2a62.

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Abstract We investigate the two loop electroweak corrections to B meson rare decays $\bar B\rightarrow X_s\gamma$ and $B_s^0\rightarrow \mu^+\mu^-$ in the minimal supersymmetry standard model (MSSM) extension with two triplets and one singlet (TNMSSM). The new particle contents and interactions in the TNMSSM can affect the theoretical predictions of the branching ratios ${\rm Br}(\bar B\rightarrow X_s\gamma)$ and ${\rm Br}(B_s^0\rightarrow \mu^+\mu^-)$, and the corrections from two loop diagrams to the process $\bar B\rightarrow X_s\gamma$ can reach around $4\%$. Considering the latest experim

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23

Li, Ying 李营, Zhi-Tian Zou, Yue-Long Shen, and Yun Li. "Effects from Hadronic Structure of Photon on $B\to\phi\gamma$ and $B_s\to(\rho^0,\omega)\gamma$ Decays." Chinese Physics C, November 17, 2022. http://dx.doi.org/10.1088/1674-1137/aca38f.

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Abstract Using the perturbative QCD approach, we studied the effects from hadronic structure of photon on the pure annihilation rediative decays $B\to\phi\gamma$ and $B_s\to(\rho^0,\omega)\gamma$. These decays have small branching fractions due to the power suppression by the $\Lambda/m_B$, which make them very sensitive to the next-leading power corrections. The quark components and the related two-particle distribution amplitudes of a final state photon are introduced. The branching fractions can be enhanced remarkably by the factorizable and nonfactorizable emission diagrams. The branching

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24

Faisel, Gaber. "Supersymmetric contributions to ${\overline B_s} \to \phi {\pi^0}$ and ${\overline B_s} \to \phi {\rho^0}$ decays in SCET." Journal of High Energy Physics 2012, no. 8 (2012). http://dx.doi.org/10.1007/jhep08(2012)031.

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25

Descotes-Genon, S., D. A. Faroughy, I. Plakias, and O. Sumensari. "Probing lepton flavor violation in meson decays with LHC data." European Physical Journal C 83, no. 8 (2023). http://dx.doi.org/10.1140/epjc/s10052-023-11860-w.

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AbstractIn this letter, we use LHC data from the Drell–Yan processes $$pp\rightarrow \ell _i\ell _j$$ p p → ℓ i ℓ j (with $$i\ne j$$ i ≠ j ) to derive model-independent upper limits on lepton-flavor-violating meson decays. Our analysis is based on an Effective Field Theory (EFT) approach and it does not require a specific assumption regarding the basis of effective operators. We find that current LHC data (140 $$\textrm{fb}^{-1}$$ fb - 1 ) already provides competitive limits on $${\mathcal {B}}(B\rightarrow \pi e \tau )$$ B ( B → π e τ ) and $${\mathcal {B}}(B\rightarrow \pi \mu \tau )$$ B ( B

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26

Meng, Guanbao, Sam Ming-Yin Wong, and Fanrong Xu. "Doubly Cabibbo-suppressed decays of antitriplet charmed baryons." Journal of High Energy Physics 2020, no. 11 (2020). http://dx.doi.org/10.1007/jhep11(2020)126.

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Abstract Doubly Cabibbo-suppressed (DCS) nonleptonic weak decays of antitriplet charmed baryons are studied systematically in this work. The factorizable and nonfactorizable contributions can be classified explicitly in the topological-diagram approach and treated separately. In particular, the evaluation of nonfactorizable terms is based on the pole model in conjunction with current algebra. All three types of relevant non- perturbative parameters contributing factorizable and nonfactorizable terms are estimated in the MIT bag model. Branching fractions of all the DCS decays are predicted to

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27

Dash, Kalpalata, P. C. Dash, R. N. Panda, Lopamudra Nayak, Susmita Kar, and N. Barik. "The nonleptonic decays of b-flavored mesons to S-wave charmonium and charm meson states." European Physical Journal C 83, no. 12 (2023). http://dx.doi.org/10.1140/epjc/s10052-023-12317-w.

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AbstractThe detection of radially excited charmonium and charm meson states, and measurement of heavy meson decays, particularly $$B_c^+\rightarrow J/\psi D_s^+$$ B c + → J / ψ D s + and $$B_c^+\rightarrow J/\psi D_s^{*+}$$ B c + → J / ψ D s ∗ + , by the LHCb and ATLAS Collaborations, have aroused a lot of theoretical interest in the nonleptonic decays of b-flavored mesons. In this paper, we study the exclusive two-body nonleptonic $${\bar{B}}^0$$ B ¯ 0 , $$\bar{B_s^0}$$ B s 0 ¯ , $$B^-$$ B - and $$B_c^-$$ B c - -meson decays to two vector meson ($$V_1(nS)V_2$$ V 1 ( n S ) V 2 ) states. Assumi

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28

Aaij, R., C. Abellan Beteta, B. Adeva, et al. "Measurements of the branching fractions of the decays $ B_s^0 \to D_s^{ \mp }{K^{\pm }} $ and $ B_s^0 \to D_s^{ - }{\pi^{ + }} $." Journal of High Energy Physics 2012, no. 6 (2012). http://dx.doi.org/10.1007/jhep06(2012)115.

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29

Altmannshofer, Wolfgang, and Peter Stangl. "New physics in rare B decays after Moriond 2021." European Physical Journal C 81, no. 10 (2021). http://dx.doi.org/10.1140/epjc/s10052-021-09725-1.

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AbstractThe anomalies in rare B decays endure. We present results of an updated global analysis that takes into account the latest experimental input – in particular the recent results on $$R_K$$ R K and BR$$(B_s \rightarrow \mu ^+\mu ^-)$$ ( B s → μ + μ - ) – and that qualitatively improves the treatment of theory uncertainties. Fit results are presented for the Wilson coefficients of four-fermion contact interactions. We find that muon specific Wilson coefficients $$C_9 \simeq -0.73$$ C 9 ≃ - 0.73 or $$C_9 = -C_{10} \simeq -0.39$$ C 9 = - C 10 ≃ - 0.39 continue to give an excellent descripti

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30

Song, Qing-Fu, Qi-Fang Lü, and Atsushi Hosaka. "Bottom-charmed baryons in a nonrelativistic quark model." European Physical Journal C 84, no. 1 (2024). http://dx.doi.org/10.1140/epjc/s10052-024-12426-0.

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AbstractIn this work, we study the low-lying mass spectra for bottom-charmed baryons in a nonrelativistic quark model by solving the three-body Schrödinger equation. The lowest $$\Xi _{bc}$$ Ξ bc , $$\Xi _{bc}^\prime $$ Ξ bc ′ , $$\Omega _{bc}$$ Ω bc , and $$\Omega _{bc}^\prime $$ Ω bc ′ states are predicted to be about 6979, 6953, 7109, and 7092 MeV, respectively. Also, the strong decays for the low-lying excited states are investigated. Our results indicate that some of $$\lambda $$ λ -mode P-wave bottom-charmed baryons are relatively narrow, which can be searched for in future experiments.

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He, Xiao-Gang, Wei Wang, and Ruilin Zhu. "Open-charm tetraquark $$X_c$$ and open-bottom tetraquark $$X_b$$." European Physical Journal C 80, no. 11 (2020). http://dx.doi.org/10.1140/epjc/s10052-020-08597-1.

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AbstractMotivated by the LHCb observation of exotic states $$X_{0,1}(2900)$$ X 0 , 1 ( 2900 ) with four open quark flavors in the $$D^- K^+$$ D - K + invariant mass distribution in the decay channel $$B^\pm \rightarrow D^+ D^- K^\pm $$ B ± → D + D - K ± , we study the spectrum and decay properties of the open charm tetraquarks. Using the two-body chromomagnetic interactions, we find that the two newly observed states can be interpreted as a radial excited tetraquark with $$J^P=0^+$$ J P = 0 + and an orbitally excited tetraquark with $$J^P=1^-$$ J P = 1 - , respectively. We then explore the mas

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32

Robertson, Gary. "Recent Studies of Exotic Hadrons at the LHCb Experiment." SciPost Physics Proceedings, no. 8 (July 11, 2022). http://dx.doi.org/10.21468/scipostphysproc.8.030.

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Recent results on studies of exotic hadrons at the LHCb experiment are summarised. These are the observation of new resonances decaying to J/\psi K^+J/ψK+ and J/\psi\phiJ/ψϕ, evidence of a J/\psi\LambdaJ/ψΛ structure and observation of excited \Xi^-Ξ− states in the \Xi_b^-\to J/\psi\Lambda K^-Ξb−→J/ψΛK− decay and the study of B_s^0\to J/\psi\pi^+\pi^-K^+K^-Bs0→J/ψπ+π−K+K− decays.

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Niu, Hua-Dian, Guo-Dong Li, Jia-Le Ren, and Xin Liu. "Perturbative QCD analysis of neutral B-meson decays into $$\sigma \sigma , \sigma f_0$$ and $$f_0 f_0$$." European Physical Journal C 82, no. 2 (2022). http://dx.doi.org/10.1140/epjc/s10052-022-10111-8.

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AbstractThe decays of $$B_{d,s}^0 \rightarrow \sigma \sigma , \sigma f_0, f_0 f_0$$ B d , s 0 → σ σ , σ f 0 , f 0 f 0 , with $$\sigma $$ σ and $$f_0$$ f 0 denoting the light scalar mesons $$f_0(500)$$ f 0 ( 500 ) and $$f_0(980)$$ f 0 ( 980 ) in the two-quark picture, are studied in the perturbative QCD approach based on $$k_T$$ k T factorization. With the referenced value of the mixing angle $$|\varphi | \sim 25^\circ $$ | φ | ∼ 25 ∘ for the $$\sigma -f_0$$ σ - f 0 mixing in the quark-flavor basis, it is of great interest to obtain that: (a) these neutral B-meson decays into $$\sigma \sigma ,

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Liu, Shidong, Zuxin Cai, Yuanxin Zheng, and Gang Li. "Hidden charmonium decays of $$\psi (nS)$$ through charmed meson loops." European Physical Journal C 83, no. 9 (2023). http://dx.doi.org/10.1140/epjc/s10052-023-12012-w.

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AbstractWe calculated transitions of the higher radial excited charmonia $$ \psi (nS) ~ ( n=3,4,5 )$$ ψ ( n S ) ( n = 3 , 4 , 5 ) to the orbital excited charmonium $$ h_c(1P) $$ h c ( 1 P ) with emission of one pion or eta meson. In calculations, the intermediate S- and P-wave charmed meson loops were considered in terms of the nonrelativistic effective field theory. The results indicate that the transitions of interest are dominated by the loops involving the $$ s_l^P=(1/2)^+ $$ s l P = ( 1 / 2 ) + charmed mesons, whereas the $$ s_l^P=(1/2)^- $$ s l P = ( 1 / 2 ) - charmed meson loops are of

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35

Aaij, R., B. Adeva, M. Adinolfi, et al. "First measurement of time-dependent CP violation in $ B_s^0\to {K^{+}}{K^{-}} $ decays." Journal of High Energy Physics 2013, no. 10 (2013). http://dx.doi.org/10.1007/jhep10(2013)183.

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36

King, Daniel, Alexander Lenz, Maria Laura Piscopo, Thomas Rauh, Aleksey V. Rusov, and Christos Vlahos. "Revisiting inclusive decay widths of charmed mesons." Journal of High Energy Physics 2022, no. 8 (2022). http://dx.doi.org/10.1007/jhep08(2022)241.

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Abstract Determining for the first time the Darwin operator contribution for the non-leptonic charm-quark decays and using new non-perturbative results for the matrix elements of ∆C = 0 four-quark operators, including eye-contractions, we present a comprehensive study of the lifetimes of charmed mesons and inclusive semileptonic decay rates as well as the ratios, within the framework of the Heavy Quark Expansion (HQE). We find good agreement with experiment for the ratio τ(D+)/τ(D0), for the total $$ {D}_s^{+} $$ D s + -meson decay rate, for the semileptonic rates of all three mesons D0, D+ an

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Xu, Fanrong, Qiaoyi Wen, and Huiling Zhong. "K 0 S -K 0 L Asymmetries in Weak Decays of Charmed Baryons." Letters in High Energy Physics 2021 (January 31, 2021). http://dx.doi.org/10.31526/lhep.2021.218.

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38

Zou, Zhi-Tian, Wen-Sheng Fang, Xin Liu, and Ying Li. "Analysis of CKM-favored quasi-two-body $$B \rightarrow D (R\rightarrow ) K \pi $$ decays in PQCD approach." European Physical Journal C 82, no. 11 (2022). http://dx.doi.org/10.1140/epjc/s10052-022-11060-y.

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AbstractLHCb Collaboration studied the resonant structure of $$B_s\rightarrow \overline{D}^0K^-\pi ^+$$ B s → D ¯ 0 K - π + decays using the Dalitz plot analysis technique, based on a data sample corresponding to an integrated luminosity of $$3.0\textrm{fb}^{-1}$$ 3.0 fb - 1 of pp collision. The $$K^-\pi ^+$$ K - π + components have been analyzed in the amplitude model, where the decay amplitude is modeled to be the resonant contributions with respect to the intermediate resonances $$K^*(892)$$ K ∗ ( 892 ) , $$K_0^*(1430)$$ K 0 ∗ ( 1430 ) and $$K_2^*(1430)$$ K 2 ∗ ( 1430 ) . Motivated by the e

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39

Perrevoort, Ann-Kathrin. "ATLAS Results with Beauty Mesons." SciPost Physics Proceedings, no. 8 (July 13, 2022). http://dx.doi.org/10.21468/scipostphysproc.8.099.

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A broad range of measurements involving BB mesons are performed with the ATLAS experiment at the Large Hadron Collider, of which a selection is discussed in this note. This includes a measurement of the relative B_c^\pmBc± to B^\pmB± production cross section in pppp collisions at a centre-of-mass energy \sqrt{s}s of 8 TeV as well as the latest results on the branching ratios of the rare decays B^0_s\to\mu^+\mu^-Bs0→μ+μ− and B^0\to\mu^+\mu^-B0→μ+μ− using pppp collisions recorded at \sqrt{s}=s= 7, 8 and 13 TeV. Furthermore, accurate measurements of mixing and CP violation in B_s^0 \to J/\psi\, \

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40

Zou, Zhi-Tian, Lei Yang, Ying Li, and Xin Liu. "Study of quasi-two-body $$B_{(s)}\rightarrow \phi (f_0(980)/f_2(1270)\rightarrow )\pi \pi $$ decays in perturbative QCD approach." European Physical Journal C 81, no. 1 (2021). http://dx.doi.org/10.1140/epjc/s10052-021-08875-6.

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AbstractIn 2017, LHCb collaboration reported their first observation of the rare decays $$B_s \rightarrow \phi (f_0(980)$$ B s → ϕ ( f 0 ( 980 ) $$/f_2(1270) \rightarrow ) \pi ^+\pi ^-$$ / f 2 ( 1270 ) → ) π + π - and the evidence of $$B^0 \rightarrow \phi (f_0(980)/f_2(1270)\rightarrow )\pi ^+\pi ^-$$ B 0 → ϕ ( f 0 ( 980 ) / f 2 ( 1270 ) → ) π + π - . Motivated by this, we study these quasi-two-body decays in the perturbative QCD approach. The branching fractions, CP asymmetries and the polarization fractions are calculated. We find that within the appropriate two-meson wave functions, the ca

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Cen, Jian-Yong, Chao-Qiang Geng, Chia-Wei Liu, and Tien-Hsueh Tsai. "Up-down asymmetries of charmed baryon three-body decays." European Physical Journal C 79, no. 11 (2019). http://dx.doi.org/10.1140/epjc/s10052-019-7467-z.

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AbstractWe study the up-down asymmetries in the three-body anti-triplet charmed baryon decays of $$\mathbf{B}_{\mathbf{c}}\rightarrow \mathbf{B}_{\mathbf{n}}MM' $$Bc→BnMM′ with the $$SU(3)_f$$SU(3)f flavor symmetry, where $$\mathbf{B}_{\mathbf{c}}$$Bc presents the anti-triplet charmed baryon of $$(\Xi _c^0,-\Xi _c^+,\Lambda _c^+)$$(Ξc0,-Ξc+,Λc+), while $$\mathbf{B}_{\mathbf{n}}$$Bn and $$M^{(')}$$M(′) denote octet baryon and meson states, respectively. By assuming the s-wave meson-pairs to be the dominant constituents in final state configurations, we can write the spin-dependent decay amplitu

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42

Zhong, Huiling, Fanrong Xu, Qiaoyi Wen, and Yu Gu. "Weak decays of antitriplet charmed baryons from the perspective of flavor symmetry." Journal of High Energy Physics 2023, no. 2 (2023). http://dx.doi.org/10.1007/jhep02(2023)235.

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Abstract In this work, we carry out a global fit for the two-body weak decays of antitriplet charmed baryons in both SU(3) respected and broken scenarios incorporating all the available data up to date. In the SU(3) irreducible representation approach (IRA), more amplitudes for irreducible representation terms are taken into account and the ranges for their coefficients in each scenarios are predicted. By a comparison among various fitting schemes in this work, experimental data prefer the SU(3) symmetry breaking scenario. Observables of interest, branching fractions and decay asymmetries of a

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43

Pakhlov, P., та V. Popov. "Time-dependent study of KS → π+π− decays for flavour physics measurements". Journal of High Energy Physics 2021, № 9 (2021). http://dx.doi.org/10.1007/jhep09(2021)092.

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Abstract Nowadays High Energy Physics experiments can accumulate unprecedented statistics of heavy flavour decays that allows to apply new methods, based on the study of very rare phenomena, which used to be just desperate. In this paper we propose a new method to measure composition of K0-$$ \overline{K} $$ K ¯ 0, produced in a decay of heavy hadrons. This composition contains important information, in particular about weak and strong phases between amplitudes of the produced K0 and $$ \overline{K} $$ K ¯ 0. We consider possibility to measure these parameters with time-dependent K0 → π+π− ana

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Yao, De-Hua, Xin Liu, Zhi-Tian Zou, Ying Li, and Zhen-Jun Xiao. "Phenomenological studies on neutral B-meson decays into $$J/\psi f_1$$ and $$\eta _c f_1$$." European Physical Journal C 83, no. 1 (2023). http://dx.doi.org/10.1140/epjc/s10052-022-11147-6.

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AbstractThe axial-vector mesons $$f_1(1285)$$ f 1 ( 1285 ) and $$f_1(1420)$$ f 1 ( 1420 ) are particularly viewed as the mixtures of flavor states $$f_n$$ f n and $$f_s$$ f s with mixing angle $$\varphi $$ φ . In order to determine this angle, we study the $$B_{d,s}^0\rightarrow J/\psi f_1(1285,1420)$$ B d , s 0 → J / ψ f 1 ( 1285 , 1420 ) and $$B_{d,s}^0\rightarrow \eta _c f_1(1285,1420)$$ B d , s 0 → η c f 1 ( 1285 , 1420 ) decays in perturbative QCD (PQCD) approach, including the effects of vertex corrections, nonfactorizable diagrams and penguin operators. Not only the branching fractions,

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45

Hsiao, Yu-Kuo, Ling Yang, Chong-Chung Lih, and Shang-Yuu Tsai. "Charmed $$\Omega _c$$ weak decays into $$\Omega $$ in the light-front quark model." European Physical Journal C 80, no. 11 (2020). http://dx.doi.org/10.1140/epjc/s10052-020-08619-y.

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AbstractMore than ten $$\Omega _c^0$$ Ω c 0 weak decay modes have been measured with the branching fractions relative to that of $$\Omega ^0_c\rightarrow \Omega ^-\pi ^+$$ Ω c 0 → Ω - π + . In order to extract the absolute branching fractions, the study of $$\Omega ^0_c\rightarrow \Omega ^-\pi ^+$$ Ω c 0 → Ω - π + is needed. In this work, we predict $${{\mathcal {B}}}_\pi \equiv {{\mathcal {B}}}(\Omega _c^0\rightarrow \Omega ^-\pi ^+)=(5.1\pm 0.7)\times 10^{-3}$$ B π ≡ B ( Ω c 0 → Ω - π + ) = ( 5.1 ± 0.7 ) × 10 - 3 with the $$\Omega _c^0\rightarrow \Omega ^-$$ Ω c 0 → Ω - transition form facto

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46

Zhang, Zhen-Hua, and Jing-Juan Qi. "Analysis of angular distribution asymmetries and the associated $$C\!P$$ asymmetries in three-body decays of bottom baryons." European Physical Journal C 83, no. 2 (2023). http://dx.doi.org/10.1140/epjc/s10052-023-11267-7.

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AbstractWe introduce a set of observables representing angular distribution asymmetries, which can be viewed as a generalization of the forward-backward asymmetry of angular distributions, and can be used as an effective tool to search for $$C\!P$$ C P violation in three-body decays of bottom and charmed baryons. We propose to search for such $$C\!P$$ C P asymmetries (1) in decays with $$\Lambda ^0$$ Λ 0 , $$\Sigma ^\pm $$ Σ ± , or $$\Lambda _c^+$$ Λ c + involved, such as $$\Lambda _b\rightarrow \Lambda ^0 D$$ Λ b → Λ 0 D and $$\Lambda _b\rightarrow \Lambda ^0\rho (770)^0$$ Λ b → Λ 0 ρ ( 770 )

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47

Buras, Andrzej J. "On the superiority of the $$|V_{cb}|-\gamma $$ plots over the unitarity triangle plots in the 2020s." European Physical Journal C 82, no. 7 (2022). http://dx.doi.org/10.1140/epjc/s10052-022-10566-9.

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AbstractThe unitarity triangle (UT) plots played already for three decades an important role in the tests of the Standard Model (SM) and the determination of the CKM parameters. As of 2022, among the four CKM parameters, $$|V_{us}|$$ | V us | and $$\beta $$ β are already measured with respectable precision, while this is not the case of $$|V_{cb}|$$ | V cb | and $$\gamma $$ γ . In the case of $$|V_{cb}|$$ | V cb | the main obstacle are the significant tensions between its inclusive and exclusive determinations from tree-level decays and it could still take some years before a unique value of t

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Hsiao, Y. K., Y. L. Wang, and H. J. Zhao. "Equivalent SU(3)f approaches for two-body anti-triplet charmed baryon decays." Journal of High Energy Physics 2022, no. 9 (2022). http://dx.doi.org/10.1007/jhep09(2022)035.

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Abstract For the two-body Bc → BM decays, where Bc denotes the anti-triplet charm baryon and B(M) the octet baryon (meson), there exist two theoretical studies based on the SU(3) flavor [SU(3)f] symmetry. One is the irreducible SU(3)f approach (IRA). In the irreducible SU(3)f representation, the effective Hamiltonian related to the initial and final states forms the amplitudes for Bc → BM. The other is the topological-diagram approach (TDA), where the W-boson emission and W-boson exchange topologies are drawn and parameterized for the decays. As required by the group theoretical consideration,

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Hsiao, Y. K., Qian Yi, Shu-Ting Cai, and H. J. Zhao. "Two-body charmed baryon decays involving decuplet baryon in the quark-diagram scheme." European Physical Journal C 80, no. 11 (2020). http://dx.doi.org/10.1140/epjc/s10052-020-08659-4.

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AbstractIn the quark-diagram scheme, we study the charmed baryon decays of $$\mathbf{B}_c\rightarrow \mathbf{B}^* M$$ B c → B ∗ M , where $$\mathbf{B}_c$$ B c is $$\Lambda _c^+$$ Λ c + or $$\Xi _c^{+(0)}$$ Ξ c + ( 0 ) , together with $$\mathbf{B}^*$$ B ∗ (M) the decuplet baryon (pseudoscalar meson). It is found that only two W-exchange processes are allowed to contribute to $$\mathbf{B}_c\rightarrow \mathbf{B}^* M$$ B c → B ∗ M . Particularly, we predict $${\mathcal {B}}(\Lambda _c^+ \rightarrow \Sigma ^{*0(+)} \pi ^{+(0)})=(2.8\pm 0.4)\times 10^{-3}$$ B ( Λ c + → Σ ∗ 0 ( + ) π + ( 0 ) ) = ( 2

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50

Huang, Dong, Tao Zhong, Hai-Bing Fu, Zai-Hui Wu, Xing-Gang Wu, and Hong Tong. "$$K_0^*(1430)$$ twist-2 distribution amplitude and $$B_s,D_s \rightarrow K_0^*(1430)$$ transition form factors." European Physical Journal C 83, no. 7 (2023). http://dx.doi.org/10.1140/epjc/s10052-023-11851-x.

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AbstractBased on the scenario that the $$K_0^*(1430)$$ K 0 ∗ ( 1430 ) is viewed as the ground state of $$s\bar{q}$$ s q ¯ or $$q\bar{s}$$ q s ¯ , we study the $$K_0^*(1430)$$ K 0 ∗ ( 1430 ) leading-twist distribution amplitude (DA) $$\phi _{2;K_0^*}(x,\mu )$$ ϕ 2 ; K 0 ∗ ( x , μ ) with the QCD sum rules in the framework of background field theory. A more reasonable sum rule formula for $$\xi $$ ξ -moments $$\langle \xi ^n\rangle _{2;K_0^*}$$ ⟨ ξ n ⟩ 2 ; K 0 ∗ is suggested, which eliminates the influence brought by the fact that the sum rule of $$\langle \xi ^0_p\rangle _{3;K_0^*}$$ ⟨ ξ p 0 ⟩ 3

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