Log in

Relevant bibliographies by topics / Semileptonic decay / Journal articles

To see the other types of publications on this topic, follow the link: Semileptonic decay.

Journal articles on the topic 'Semileptonic decay'

Author: Grafiati

Published: 4 June 2021

Last updated: 18 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Semileptonic decay.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

LANGENEGGER, URS. "SEMILEPTONIC B-DECAYS AT BABAR." Modern Physics Letters A 19, no. 08 (March 14, 2004): 559–76. http://dx.doi.org/10.1142/s0217732304013544.

Full text

Abstract:

We present results on semileptonic B-decays obtained with the BABAR detector. The large data set accumulated at the PEP-II asymmetric-energy B-factory allows a new measurement technique, where the hadronic decay of one B-meson is fully reconstructed and the semileptonic decay of the recoiling B-meson is studied. Traditional analysis techniques of inclusive and exclusive B-decays complement this approach with very high statistics data samples. These measurements play an important role in the tests of the description of CP violation in the Standard Model: The determinations of the Cabibbo-Kobayashi-Maskawa matrix elements |Vcb| and |Vub| provide constraints on the unitarity of the CKM triangle. Furthermore, the experimental measurement of parameters of Heavy Quark Effective Theory test the consistency of the theoretical description of semileptonic B-decays.

APA, Harvard, Vancouver, ISO, and other styles

2

Albrecht, H., H. I. Cronström, H. Ehrlichmann, T. Hamacher, R. P. Hofmann, T. Kirchhoff, A. Nau, et al. "Observation of semileptonic decay." Physics Letters B 303, no. 3-4 (April 1993): 368–76. http://dx.doi.org/10.1016/0370-2693(93)91447-u.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Nam, J. W. "Results on Inclusive and Semileptonic B decays from Belle." International Journal of Modern Physics A 16, supp01b (September 2001): 625–27. http://dx.doi.org/10.1142/s0217751x01007637.

Full text

Abstract:

We report on studies of inclusive and semileptonic B decay from Belle. The measurement of branching ratios of exclusive semileptonic B decays [Formula: see text] and inclusive B→π0X and the momentum spectrum of neutral pions are presented.

APA, Harvard, Vancouver, ISO, and other styles

4

Aoki, S., R. Burkhalter, M. Fukugita, S. Hashimoto, K.-I. Ishikawa, N. Ishizuka, Y. Iwasaki, et al. "Differential decay rate for B → πlν semileptonic decays." Nuclear Physics B - Proceedings Supplements 94, no. 1-3 (March 2001): 329–32. http://dx.doi.org/10.1016/s0920-5632(01)00954-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Albertus, C., E. Hernández, and J. Nieves. "Study of the semileptonic decay." Nuclear Physics B - Proceedings Supplements 142 (May 2005): 27–30. http://dx.doi.org/10.1016/j.nuclphysbps.2005.01.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Albrecht, H., H. Ehrlichmann, T. Hamacher, A. Krüger, A. Nau, A. Nippe, M. Reidenbach, et al. "Observations of Λc+ semileptonic decay." Physics Letters B 269, no. 1-2 (October 1991): 234–42. http://dx.doi.org/10.1016/0370-2693(91)91480-j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

ROBERTS, W., and MUSLEMA PERVIN. "HYPERFINE MIXING AND THE SEMILEPTONIC DECAYS OF DOUBLE-HEAVY BARYONS IN A QUARK MODEL." International Journal of Modern Physics A 24, no. 13 (May 20, 2009): 2401–13. http://dx.doi.org/10.1142/s0217751x09043407.

Full text

Abstract:

The semileptonic decays of the lowest-lying double-heavy baryons are treated in a quark model. For the Ξbb, hyperfine mixing in the spin wave function leaves the total rate for decay into the lowest lying daughter baryons essentially unchanged, but changes the relative rates into the Ξbc and [Formula: see text]. The same pattern is obtained in the decays of the Ωbb. For the Ξbc, this mixing leads to factor of about 17 suppression in the decay rate to the [Formula: see text] when wave functions truncated to the largest components are used, but the total semileptonic decay rate of the parent baryon remains essentially unchanged. For the Ωbc, the decay to the [Formula: see text] is suppressed by a factor of more than 25 from the unmixed case. When the full wave functions are used, the large suppression of the decays to the [Formula: see text] and [Formula: see text] persists.

APA, Harvard, Vancouver, ISO, and other styles

8

Fariborz, Amir H., Renata Jora, Joseph Schechter, and M. Naeem Shahid. "Probing pseudoscalar and scalar mesons in semileptonic decays of $D_s^+$, D+ and D0." International Journal of Modern Physics A 30, no. 02 (January 20, 2015): 1550012. http://dx.doi.org/10.1142/s0217751x15500128.

Full text

Abstract:

With the primary motivation of probing the quark substructure of scalar mesons, a generalized linear sigma model for the lowest and the next-to-lowest scalar and pseudoscalar mesons is employed to investigate several semileptonic decays of D mesons. The free parameters of the model (in its leading approximation) have been previously determined from fits to mass spectra and various low-energy parameters. With these fixed parameters, the model has already given encouraging predictions for different low-energy decays and scattering, as well as for semileptonic decay channels of [Formula: see text] that include a scalar meson in the final state. In the present work, we apply the same model (in its leading order with the same fixed parameters) to different semileptonic decay channels of [Formula: see text], D+ and D0. Although these decay channels produce only pseudoscalar mesons in the final states, since various properties of scalar mesons have been used in fixing the model parameters, this study further tests the model and its predictions for the quark substructure of both pseudoscalar as well as scalar mesons. We find that these predictions are in qualitative agreement with experiment.

APA, Harvard, Vancouver, ISO, and other styles

9

Zhang, L. M. "D Mixing and CPV in D Decays from Belle." International Journal of Modern Physics A 21, no. 27 (October 30, 2006): 5460–67. http://dx.doi.org/10.1142/s0217751x06034616.

Full text

Abstract:

We report the recent results of [Formula: see text] mixing and CP violation studies in D0 decays from Belle, which include the time-dependent measurements of D0 wrong-sign semileptonic decay, wrong-sign hadronic decay to K+π-, as well as the wrong-sign ratio of hadronic decays to K+π-n(π).

APA, Harvard, Vancouver, ISO, and other styles

10

Siebert, Hans-Wolfgang. "Neutron decay, semileptonic hyperon decays and the Cabibbo model." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 284, no. 1 (November 1989): 94–97. http://dx.doi.org/10.1016/0168-9002(89)90256-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

VOLOSHIN, M. B. "NON-FACTORIZABLE TERMS, HEAVY QUARK MASSES, AND SEMILEPTONIC DECAYS OF D AND B MESONS." Modern Physics Letters A 17, no. 04 (February 10, 2002): 245–51. http://dx.doi.org/10.1142/s0217732302006461.

Full text

Abstract:

The non-factorizable terms in the operator product expansion have been recognized as one of the theoretical obstacles for precision determination of the mixing parameter Vub from semileptonic B decays. It is pointed out here that the recent CLEO data on the parameters of the heavy quark expansion λ1 and [Formula: see text], combined with a theoretical bound on λ1 strongly favor the existence of a sizeable contribution of non-factorizable terms in semileptonic decays of D mesons. Thus these terms are likely to solve the long-standing problem of the deficit of semileptonic decay rate of the D mesons, and with better data their magnitude can be determined and used in studies of the parameter Vub.

APA, Harvard, Vancouver, ISO, and other styles

12

Steele, T. G., M. R. Ahmady, F. A. Chishtie, and V. Elias. "Padé-Improved Estimate of Perturbative Contributions to Inclusive Semileptonic b→u Decays." International Journal of Modern Physics A 16, supp01b (September 2001): 642–44. http://dx.doi.org/10.1142/s0217751x01007686.

Full text

Abstract:

Padé-approximant methods are used to estimate the three loop perturbative contributions to the inclusive semileptonic b→u decay rate. These improved estimates of the decay rate reduce the theoretical uncertainty in the extraction of the CKM matrix element |Vub| from the measured inclusive semileptonic branching ratio.

APA, Harvard, Vancouver, ISO, and other styles

13

Johns, W. E. "Recent Semileptonic Decay Results from FOCUS." Nuclear Physics B - Proceedings Supplements 142 (May 2005): 134–37. http://dx.doi.org/10.1016/j.nuclphysbps.2005.01.024.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Aliev, T. M., and M. Savcı. "Semileptonic B→a1ℓν decay in QCD." Physics Letters B 456, no. 2-4 (June 1999): 256–63. http://dx.doi.org/10.1016/s0370-2693(99)00466-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Gottlieb, Steven, and Sonali Tamhankar. "A lattice study ofΛb semileptonic decay." Nuclear Physics B - Proceedings Supplements 119 (May 2003): 644–46. http://dx.doi.org/10.1016/s0920-5632(03)01612-8.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Nielsen, M., F. S. Navarra, H. G. Dosch, and E. M. Ferreira. "Semileptonic D decay into scalar mesons." Nuclear Physics B - Proceedings Supplements 121 (June 2003): 110–13. http://dx.doi.org/10.1016/s0920-5632(03)01823-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

DONOGHUE, JOHN F. "Models of Semileptonic b ? u Decay*." Annals of the New York Academy of Sciences 619, no. 1 CP Violation (February 1991): 67–73. http://dx.doi.org/10.1111/j.1749-6632.1991.tb37818.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

WARD, B. F. L. "Theoretical Uncertainties in Semileptonic B Decay." Annals of the New York Academy of Sciences 619, no. 1 CP Violation (February 1991): 104–7. http://dx.doi.org/10.1111/j.1749-6632.1991.tb37824.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Adamovich, M., Y. Alexandrov, F. Antinori, D. Barberis, W. Beusch, A. Buys, M. Dameri, et al. "A study of the semileptonic decay." Physics Letters B 268, no. 1 (October 1991): 142–44. http://dx.doi.org/10.1016/0370-2693(91)90936-k.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

ALBERTUS, C., E. HERNÁNDEZ, and J. NIEVES. "HYPERFINE MIXING IN b → c SEMILEPTONIC AND ELECTROMAGNETIC DECAYS OF DOUBLY HEAVY bc BARYONS." International Journal of Modern Physics: Conference Series 26 (January 2014): 1460107. http://dx.doi.org/10.1142/s2010194514601070.

Full text

Abstract:

We show that semileptonic and electromagnetic decays involving spin-1/2 doubly heavy bc baryons are very sensitive to hyperfine mixing in their wave functions. We further show how heavy quark spin symmetry relations, obtained in the infinite heavy quark mass limit and near zero recoil, could be used to extract the admixtures in a model independent way from semileptonic decay data. On the other hand the infinite heavy quark mass limit gives wrong predictions in the electromagnetic case.

APA, Harvard, Vancouver, ISO, and other styles

21

SCIABÀ, ANDREA. "Study of ${\rm B^0_s}$ oscillations and measurement of the inclusive b semileptonic branching ratio in ALEPH." International Journal of Modern Physics A 16, supp01b (September 2001): 619–24. http://dx.doi.org/10.1142/s0217751x01007625.

Full text

Abstract:

An improved search for [Formula: see text] oscillations is performed on b hadron decays collected by the ALEPH experiment during 1991-1995 with three analyses, using respectively an inclusive sample of semileptonic b decays, a sample of [Formula: see text] events and a sample of fully reconstructed [Formula: see text] decays. This update results in a significant improvement over previously published results. A precise measurement of the inclusive semileptonic b branching ratio is performed, by exploiting the correlation between the lepton charge and an inclusive charge estimator in the opposite hemisphere, thus allowing to reduce the dependence on the b-decay modelling.

APA, Harvard, Vancouver, ISO, and other styles

22

MACIUŁA, RAFAŁ, ANTONI SZCZUREK, and GABRIELA ŚLIPEK. "PRODUCTION OF D AND B MESONS AND THEIR SEMILEPTONIC DECAYS." International Journal of Modern Physics A 26, no. 03n04 (February 10, 2011): 549–51. http://dx.doi.org/10.1142/s0217751x11051998.

Full text

Abstract:

We have calculated the kinematical correlations between charged leptons from semileptonic decays of open charm/bottom as well as leptons produced in the Drell-Yan mechanism in proton-proton collisions at BNL RHIC. Presented production rates for open charm and bottom were estimated by a detailed analysis of so-called nonphotonic electrons. The distributions for charm and bottom quarks pairs are calculated in the kt-factorization approach with the help of the Kwieciński unintegrated parton distributions. The hadronization of heavy quarks is done by means of Peterson et al. fragmentation function. The semileptonic decay functions are found by fitting recent semileptonic data obtained by the CLEO and BABAR. We get good description of recent PHENIX data.

APA, Harvard, Vancouver, ISO, and other styles

23

Ma, Hai Long. "Recent Results of D Physics on BESII." International Journal of Modern Physics A 21, no. 27 (October 30, 2006): 5430–35. http://dx.doi.org/10.1142/s0217751x06034562.

Full text

Abstract:

Based on the data sample of 33 pb-1 collected at and around 3.773 GeV with the BESII detector at the BEPC collider, the absolute branching fractions for some exclusive semileptonic decays and inclusive decays of D mesons have been measured. With the measured branching fractions, the ratio of the two partial widths of the decays D0 → K-μ+νμ and [Formula: see text] is determined to be 0.87 ± 0.24 ± 0.15, which supports that the isospin conversation holds in the exclusive semimuonic decays of D0 and D- mesons. The ratio of the vector to pseudoscalar semileptonic decay rates [Formula: see text] is determined to be 0.57 ± 0.17 ± 0.02.

APA, Harvard, Vancouver, ISO, and other styles

24

WANG, ZHI-HUI, GUO-LI WANG, HUI-FENG FU, and YUE JIANG. "BcDECAYS TO HEAVY-LIGHT ORBITALLY EXCITED MESONS." International Journal of Modern Physics A 27, no. 09 (April 10, 2012): 1250049. http://dx.doi.org/10.1142/s0217751x12500492.

Full text

Abstract:

We calculate the exclusive semileptonic and nonleptonic decays of Bcmeson to heavy-light orbitally excited states in the framework of the improved Bethe–Salpeter method. The hadronic matrix elements are calculated and expressed as overlap integrals of the relativistic Salpeter wave functions of corresponding mesons, decay rates of the semileptonic and nonleptonic Bcdecays to [Formula: see text], [Formula: see text] and [Formula: see text] are obtained. Some channels provide us sizable ratios, for examples, [Formula: see text] and [Formula: see text], with such ratios, the missing scalar Bs0may be detected though its cascade strong decays in the forthcoming LHC experiment.

APA, Harvard, Vancouver, ISO, and other styles

25

Sungu, J. Y., H. Sundu, and K. Azizi. "Semileptonic Transition of Tensorχc2(1P)toDsMeson." Advances in High Energy Physics 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/252795.

Full text

Abstract:

Taking into account the two-gluon condensate corrections, the transition form factors of the semileptonicχc2→Dsl-ν(l=e,μ)decay channel are calculated via three-point QCD sum rules. These form factors are used to estimate the decay width of the transition under consideration in both electron and muon channels. The obtained results can be used both in direct search for such decay channels at charm factories and in analysis of theBcmeson decay at LHC.

APA, Harvard, Vancouver, ISO, and other styles

26

MATSUMOTO, SEIJI, KENJI TOMINAGA, OSAMU TERAZAWA, and MINORU BIYAJIMA. "HEAVY QUARK POLARIZATION AND ENERGY SPECTRA OF DECAY PRODUCTS IN SEMILEPTONIC DECAYS." International Journal of Modern Physics A 08, no. 06 (March 10, 1993): 1153–79. http://dx.doi.org/10.1142/s0217751x93000473.

Full text

Abstract:

We calculate in the free quark model energy distributions of final lepton and quark pairs from c and b quark semileptonic decays in e−e+ colliders. Polarizations and spin-spin correlations of heavy quark pair are discussed, which will test the vector and axial vector couplings of the Weinberg-Salam model especially near the Z peak.

APA, Harvard, Vancouver, ISO, and other styles

27

Flood, Kevin T. "SEARCH FOR $D^0-\overline{D}^0$ MIXING USING SEMILEPTONIC DECAYS." International Journal of Modern Physics A 20, no. 16 (June 30, 2005): 3686–88. http://dx.doi.org/10.1142/s0217751x0502731x.

Full text

Abstract:

Based on an 87-fb-1 dataset collected by the Babar detector at the PEP-II asymmetric-energy B-Factory, a search for [Formula: see text] mixing has been made using the semileptonic decay modes D*+ → π+D0, D0 → Kev (+c.c.) . The use of these modes allows unambiguous flavor tagging and a combined fit of the D0 decay time and D*+-D0 mass difference (ΔM) distributions. The high-statistics sample of unmixed semileptonic D0 decays is used to model the ΔM distribution and time-dependence of mixed events directly from the data. Neural networks are used to select events and reconstruct the D0. A result consistent with no charm mixing has been obtained, R mix = 0.0023 ± 0.0012 ± 0.0004. This corresponds to an upper limit of R mix < 0.0042 (90% CL).

APA, Harvard, Vancouver, ISO, and other styles

28

AAGAARD PETERSEN, BRIAN. "CP violation measurements at ALEPH." International Journal of Modern Physics A 16, supp01b (September 2001): 603–6. http://dx.doi.org/10.1142/s0217751x01007583.

Full text

Abstract:

We use the full ALEPH data set at LEP1 of four million hadronic Z decays to measure CP asymmetries in the [Formula: see text] decay. From 23 [Formula: see text] decays the value [Formula: see text] is measured, while from two measurements of the semileptonic asymmetry a CP using inclusive b decays we obtain a CP =-0.013±0.026.

APA, Harvard, Vancouver, ISO, and other styles

29

Chiang, Cheng-Wei. "Bounds on Heavy-to-Heavy Weak Decay Form Factors." International Journal of Modern Physics A 16, supp01a (October 2001): 416–18. http://dx.doi.org/10.1142/s0217751x01007091.

Full text

Abstract:

We provide upper and lower bounds on the semileptonic weak decay form factors for B → D(*) and Λb → Λc decays by utilizing inclusive heavy quark effective theory sum rules. These bounds are calculated to second order in ΛQCD/mQ and first order in αs. The [Formula: see text] corrections to the bounds at zero recoil are also presented.

APA, Harvard, Vancouver, ISO, and other styles

30

WANG, W. Y., Y. L. WU, Y. A. YAN, M. ZHONG, and Y. B. ZUO. "A MORE PRECISE EXTRACTION OF |Vcb| IN HQEFT OF QCD." Modern Physics Letters A 19, no. 18 (June 14, 2004): 1379–90. http://dx.doi.org/10.1142/s0217732304013775.

Full text

Abstract:

The more precise extraction for the CKM matrix element |Vcb| in the heavy quark effective field theory (HQEFT) of QCD is studied from both exclusive and inclusive semileptonic B decays. The values of relevant nonperturbative parameters up to order [Formula: see text] are estimated consistently in HQEFT of QCD. Using the most recent experimental data for B decay rates, |Vcb| is updated to be |Vcb|=0.0395±0.0011expt±0.0019theorfrom B→D*lν decay and |Vcb|=0.0434±0.0041expt±0.0020theorfrom B→Dlν decay as well as |Vcb|=0.0394±0.0010expt±0.0014theorfrom inclusive B→Xclν decay.

APA, Harvard, Vancouver, ISO, and other styles

31

JIN, CHANGHAO. "DETERMINATIONS OF |Vub| AND |Vcb| FROM MEASUREMENTS OF B→ Xu,cℓν DIFFERENTIAL DECAY RATES." Modern Physics Letters A 14, no. 18 (June 14, 1999): 1163–73. http://dx.doi.org/10.1142/s0217732399001255.

Full text

Abstract:

Methods are described in the framework of light-cone expansion which allow one to determine the Cabibbo–Kobayashi–Maskawa matrix elements |Vub| and |Vcb| from measurements of the differential decay rates as a function of the scaling variables in the inclusive semileptonic decays of B mesons. By these model-independent methods the dominant hadronic uncertainties can be avoided and the B→ Xuℓν decay can be very efficiently differentiated from the B→ Xcℓν decay, which may lead to precise determinations of |Vub| and |Vcb|.

APA, Harvard, Vancouver, ISO, and other styles

32

David Dikeman, R., and N. G. Uraltsev. "Key distributions for charmless semileptonic B decay." Nuclear Physics B 509, no. 1-2 (January 1998): 378–88. http://dx.doi.org/10.1016/s0550-3213(97)00702-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Avila, M. "B semileptonic decay and hydrogen-like mesons." Journal of Physics G: Nuclear and Particle Physics 21, no. 5 (May 1, 1995): 615–19. http://dx.doi.org/10.1088/0954-3899/21/5/005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Aquila, V., P. Gambino, G. Ridolfi, and N. Uraltsev. "Perturbative corrections to semileptonic b decay distributions." Nuclear Physics B 719, no. 1-2 (July 2005): 77–102. http://dx.doi.org/10.1016/j.nuclphysb.2005.04.031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Falk, Adam F., Michael Luke, and Martin J. Savage. "Hadron spectra for semileptonic heavy quark decay." Physical Review D 53, no. 5 (March 1, 1996): 2491–505. http://dx.doi.org/10.1103/physrevd.53.2491.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Aitala, E. M., S. Amato, J. C. Anjos, J. A. Appel, D. Ashery, S. Banerjee, I. Bediaga, et al. "Search forD0D¯0Mixing in Semileptonic Decay Modes." Physical Review Letters 77, no. 12 (September 16, 1996): 2384–87. http://dx.doi.org/10.1103/physrevlett.77.2384.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

García, A., B. González, and R. Huerta. "Analytic expression for baryon semileptonic decay rate." Physical Review D 37, no. 9 (May 1, 1988): 2537–41. http://dx.doi.org/10.1103/physrevd.37.2537.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Georgi, Howard, Benjamín Grinstein, and Mark B. Wise. "Λb semileptonic decay form factors for mc ≠ ∞." Physics Letters B 252, no. 3 (December 1990): 456–60. http://dx.doi.org/10.1016/0370-2693(90)90569-r.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Glenn Boyd, C., and David E. Brahm. "ωb semileptonic decay form factors for mc≠∞." Physics Letters B 254, no. 3-4 (January 1991): 468–73. http://dx.doi.org/10.1016/0370-2693(91)91187-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Oakes, Robert J. "Semileptonic decay modes of the τ lepton." Nuclear Physics B - Proceedings Supplements 15 (June 1990): 273–76. http://dx.doi.org/10.1016/0920-5632(90)90025-p.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Körner, Jürgen G. "Λb-Polarization from its inclusive semileptonic decay." Nuclear Physics B - Proceedings Supplements 50, no. 1-3 (June 1996): 130–34. http://dx.doi.org/10.1016/0920-5632(96)00379-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

Scora, Daryl. "Ds semileptonic decay in the quark model." Nuclear Physics A 527 (May 1991): 743–44. http://dx.doi.org/10.1016/0375-9474(91)90226-v.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Bean, Alice L. "Recent semileptonic charm decay results from E691." Nuclear Physics A 527 (May 1991): 755–56. http://dx.doi.org/10.1016/0375-9474(91)90230-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

DINGFELDER, JOCHEN. "DETERMINATION OF |Vub| FROM TAGGED AND UNTAGGED $B \overline{B}$ EVENTS WITH THE BABAR DETECTOR." International Journal of Modern Physics A 20, no. 16 (June 30, 2005): 3707–11. http://dx.doi.org/10.1142/s0217751x05027382.

Full text

Abstract:

Measurements of charmless semileptonic B-meson decays and the CKM matrix element |Vub| are reported based on a sample of 88 million [Formula: see text] events recorded with the BABAR detector. Decays B → Xuℓν are selected from both tagged and untagged [Formula: see text] events and separated from the dominant charm background, B → Xcℓν, using different kinematic variables: the lepton momentum Eℓ, the squared four-momentum transfer q2, and the hadronic mass mX. The extrapolation to the total decay rate to determine |Vub| is performed for different theoretical models. We have also measured branching ratios for the exclusive semileptonic decays B → π(ρ,ω,η,η′,a0)ℓν, where a high signal purity is reached by fully or partially reconstructing the second B meson.

APA, Harvard, Vancouver, ISO, and other styles

45

Di Salvo, E., F. Fontanelli, and Z. J. Ajaltouni. "Detailed study of the Λb → Λcτν̄τ decay." International Journal of Modern Physics A 33, no. 29 (October 20, 2018): 1850169. http://dx.doi.org/10.1142/s0217751x18501695.

Full text

Abstract:

We examine in detail the semileptonic decay [Formula: see text], which may confirm previous hints, from the analogous [Formula: see text] decay, of a new physics beyond the Standard Model. First of all, starting from rather general assumptions, we predict the partial width of the decay. Then we analyze the effects of five possible new physics interactions, adopting in each case five different form factors. In particular, for each term beyond the Standard Model, we find some constraints on the strength and phase of the coupling, which we combine with those found by other authors in analyzing the analogous semileptonic decays of [Formula: see text]. Our analysis involves some dimensionless quantities, substantially independent of the form factor, but which, owing to the constraints, turn out to be strongly sensitive to the kind of nonstandard interaction. We also introduce a criterion thanks to which one can discriminate among the various new physics terms: the left-handed current and the two-Higgs-doublet model appear privileged, with a neat preference for the former interaction. Finally, we suggest a differential observable that could, in principle, help to distinguish between the two cases.

APA, Harvard, Vancouver, ISO, and other styles

46

CHOUDHURY, DEBAJYOTI, ANIRBAN KUNDU, and BISWARUP MUKHOPADHYAYA. "TESTABLE SIGNALS OF CHARM DECAY IN THE Bc-MESON." Modern Physics Letters A 16, no. 22 (July 20, 2001): 1439–48. http://dx.doi.org/10.1142/s0217732301004650.

Full text

Abstract:

The b and c quarks compete with each other in the decays of the Bc-meson. We show how one can obtain reliable signals of c→s decay in the Bc system in order to calculate the relative strengths of the two types of decays. This, we argue, can be done by considering the decay [Formula: see text], followed by semileptonic decays of the Bs. We suggest looking for like-sign dileptons together with a Ds at the BTeV or LHC-B experiments, and show that such signals can be made background-free by suitable event selection.

APA, Harvard, Vancouver, ISO, and other styles

47

Voloshin, M. B. "Bound on V+A Admixture in the b→c Current from Inclusive vs Exclusive Semileptonic Decays of B Mesons." Modern Physics Letters A 12, no. 25 (August 20, 1997): 1823–27. http://dx.doi.org/10.1142/s0217732397001850.

Full text

Abstract:

An admixture of a right-handed b→ c current in the semileptonic weak decays of the B mesons would give a significantly different contribution to the inclusive rate of the decays B→lν Xc as compared to the exclusive decay B→ D* lν at zero recoil. Thus a difference in the values of |Vcb| extracted from the data on these two types of decay would measure such admixture. The present marginal mismatch in determination of |Vcb| by the two methods can be interpreted as corresponding to gR/gL≈ 0.14±0.18.

APA, Harvard, Vancouver, ISO, and other styles

48

ŁUSZCZAK, MARTAL, RAFAŁ MACIUŁA, and ANTONI SZCZUREK. "SEMILEPTONIC DECAYS OF HEAVY MESONS AT RHIC." International Journal of Modern Physics A 24, no. 02n03 (January 30, 2009): 501–5. http://dx.doi.org/10.1142/s0217751x09043948.

Full text

Abstract:

We discuss production of nonphotonic electrons in proton-proton scattering at RHIC. The distributions in rapidity and transverse momentum of charm and bottom quarks/antiquarks are calculated in the kt-factorization approach. The hadronization of heavy quarks is done by means of Peterson and Braaten et al. fragmentation functions. The semileptonic decay functions are found by fitting recent semileptonic data obtained by the CLEO and BABAR collaborations.

APA, Harvard, Vancouver, ISO, and other styles

49

TURCZYK, SASCHA. "HIGHER-ORDERS IN SEMILEPTONIC B-DECAYS." Modern Physics Letters A 27, no. 32 (October 11, 2012): 1230027. http://dx.doi.org/10.1142/s0217732312300273.

Full text

Abstract:

In this paper, on a talk given at Lawrence Berkeley Laboratory, we discuss higher-order non-perturbative corrections in inclusive semileptonic decays of B mesons. First the generic calculation is reviewed and then we identify the relevant hadronic matrix-elements up to [Formula: see text]. For a quantitative analysis of these effects, the value of these new matrix-elements is estimated within an approximation scheme. We investigate the role of so-called "intrinsic-charm" operators in this decay, appearing first at order [Formula: see text] in the heavy-quark expansion. These operators induce an expansion infrared sensitive to the charm quark [Formula: see text]. Parametrically the power corrections complement the estimate of the potential impact of [Formula: see text] contributions, which we will explore. In this context, we draw semiquantitative conclusions for the expected scale of valence weak annihilation contribution in semileptonic B decays. Furthermore the effects on the integrated rate and on kinematic moments are then estimated up to [Formula: see text].

APA, Harvard, Vancouver, ISO, and other styles

50

Hashimoto, Shoji, Brian Colquhoun, Taku Izubuchi, Takashi Kaneko, and Hiroshi Ohki. "Inclusive B decay calculations with analytic continuation." EPJ Web of Conferences 175 (2018): 13006. http://dx.doi.org/10.1051/epjconf/201817513006.

Full text

Abstract:

First-principle lattice calculation of inclusive B meson semileptonic decays is possible for a certain class of moments that is connected to the structure function at unphysical kinematics by analytic continuation. We present an exploratory lattice calculation and a comparison with the heavy quark expansion technique.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!