Relevant bibliographies by topics / Flavour Changing Neutral Current (FCNC)

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers
  4. Reports

Academic literature on the topic 'Flavour Changing Neutral Current (FCNC)'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Flavour Changing Neutral Current (FCNC)"

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Hesari, Hoda, Hamzeh Khanpour, Morteza Khatiri Yanehsari, and Mojtaba Mohammadi Najafabadi. "Probing the Top Quark Flavour-Changing Neutral Current at a Future Electron-Positron Collider." Advances in High Energy Physics 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/476490.

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We present a study to examine the sensitivity of a futuree-e+collider to the anomalous top flavour-changing neutral current (FCNC) to the gluon. To separate signal from background a multivariate analysis is performed on top quark pair and background events, where one top quark is considered to follow the dominant standard model (SM) decay,t→Wb, and the other top decays through FCNC,t→qg, whereqis au- or ac-quark. The analysis of fully hadronic FCNC decay of thett-pair is also presented. The 95% confidence level limits on the top quark anomalous couplings are obtained for different values of th
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Kozachuk, Anastasiia, Dmitri Melikhov та Nikolai Nikitin. "Long-distance QCD effects in FCNC B → γl+l- decays". EPJ Web of Conferences 192 (2018): 00031. http://dx.doi.org/10.1051/epjconf/201819200031.

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This presentation reviews the main results of our recent work [1] on rare radiative leptonic decays Bd,s → γμ+μ- and Bd,s → γe+e- induced by flavour-changing neutral currents (FCNC) in the Standard Model.
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SAHOO, S., та L. MAHARANA. "THE EFFECT OF Z′-MEDIATED FLAVOR-CHANGING NEUTRAL CURRENT ON Bd→ℓ+ℓ- DECAY". Modern Physics Letters A 22, № 21 (2007): 1591–99. http://dx.doi.org/10.1142/s0217732307021925.

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We study the effect of both Z and Z′-mediated flavor-changing neutral current (FCNC) on the Bd→ℓ+ℓ-, (ℓ = μ, τ) rare decay. We find that the branching ratio can be larger by order two from its Standard Model (SM) value due to the effect of both Z and Z′-mediated FCNC, though the major contribution comes from Z boson and provides signals for new physics beyond the SM.
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Melikhov, Dmitri. "Charming loops in exclusive rare FCNC B-decays." EPJ Web of Conferences 222 (2019): 01007. http://dx.doi.org/10.1051/epjconf/201922201007.

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Rare B-decays induced by flavour-changing neutral currents (FCNC) is one of the promising candidates for probing physics beyond the Standard model. However, for identifying potential new physics from the data, reliable control over QCD contributions is necessary. We focus on one of such QCD contributions – the charming loops – that potentially can lead to difficulties in disentangling new physics effects from the observable and discuss the possibility to gain control over theoretical predictions for charming loops.
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CLINE, DAVID B. "RARE FCNC-B DECAYS AT HADRON MACHINES." Modern Physics Letters A 08, no. 36 (1993): 3397–411. http://dx.doi.org/10.1142/s0217732393003822.

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We review the current studies and future prospects for studies of Flavor Changing Neutral Current (FCNC) processes, emphasizing rare B decays. These experiments will be very sensitive to physics beyond the standard model. A key problem in these studies is the method to trigger the detector. We discuss a novel technique that uses an optical-Cherenkov light trigger to select events with significant impact parameters.
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KRIŽAN, PETER. "FCNC DECAYS OF B MESONS." International Journal of Modern Physics A 20, no. 02n03 (2005): 652–57. http://dx.doi.org/10.1142/s0217751x05022068.

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The paper reviews recent results from the Belle experiment on the flavor changing neutral current processes b→sγ, b→dγ and b→sℓ+ℓ-. We report on a new measurement of the b→sγ inclusive rate and of the moments of the photon energy distribution. We also present the measurements of rate, isospin asymmetry and CP violation in the B→K*γ decays, as well as the CP asymmetry measurement in the inclusive B→Xsγ transitions. We report on the evidence for exclusive b→dγ transitions, and finally present the first observation of the B→K*ℓ+ℓ- decay and updated measurements of the B→Kℓ+ℓ- and B→Xsℓ+ℓ- branchi
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Papoulias, D. K., and T. S. Kosmas. "Studying background processes of the exotic neutrino-nucleus reactions." HNPS Proceedings 21 (March 8, 2019): 11. http://dx.doi.org/10.12681/hnps.1998.

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The background processes of the flavour changing neutral current (FCNC) processes, predicted by various new-physics models to occur in the presence of nuclei, are examined by computing the relevant nuclear matrix elements within the context of the quasi-particle RPA using realistic strong two-body forces. Our main goal is to explore the role of the non-standard interactions (NSI) in the leptonic sector and specifically: (i) in lepton flavour violating (LFV) processes involving neutrinos νl and ν ̃l, l = e, μ, τ and (ii) in charged lepton flavour violating (cLFV) processes involving the charged
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Turk Cakir, I., A. Yilmaz, H. Denizli, A. Senol, H. Karadeniz та O. Cakir. "Probing the Anomalous FCNC tqγ Couplings at Large Hadron Electron Collider". Advances in High Energy Physics 2017 (14 вересня 2017): 1–8. http://dx.doi.org/10.1155/2017/1572053.

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We investigate the anomalous flavour changing neutral current (FCNC) interactions of top quark through the process e-p→e-W±q+X. We calculate the signal and background cross sections in electron-proton collisions at Large Hadron electron Collider (LHeC) with a 7 TeV proton beam from the LHC and a new 60 GeV electron beam from energy recovery linac (ERL). We study the relevant background processes including one electron and three jets in the final state. The distributions of the invariant mass of two jets and an additional jet tagged as b-jet are used to account for signal and background events
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Bednyakov, Alexander Vadimovich, and Şükrü Hanif Tanyıldızı. "A Mathematica package for calculation of one-loop penguins in FCNC processes." International Journal of Modern Physics C 26, no. 04 (2015): 1550042. http://dx.doi.org/10.1142/s0129183115500424.

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In this work, we present a Mathematica package Peng4BSM@LO which calculates the contributions to the Wilson Coefficients of certain effective operators originating from the one-loop penguin Feynman diagrams. Both vector and scalar external legs are considered. The key feature of our package is the ability to find the corresponding expressions in almost any New Physics model which extends the SM and has no flavor changing neutral current (FCNC) transitions at the tree level.
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Bednyakov, Alexander, and Veronika Rutberg. "FCNC decays of the Higgs bosons in the BGL model." Modern Physics Letters A 33, no. 31 (2018): 1850152. http://dx.doi.org/10.1142/s0217732318501523.

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We consider flavor-changing decays of neutral Higgs bosons in the context of CP-conserving BGL model — a variant of 2HDM Type 3 model suggested by Branco, Grimus and Lavoura — in which tree-level FCNC couplings are suppressed by elements of known fermion mixing matrices. The relevant regions of parameter space compatible with experimental restrictions on the SM Higgs properties are studied. We also include current bounds on [Formula: see text] into consideration. In addition, different FCNC decay modes are analyzed for heavier Higgs states [Formula: see text] and conservative estimates for [Fo
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Dissertations / Theses on the topic "Flavour Changing Neutral Current (FCNC)"

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Friedrich, Conrad. "Search for single top-quark production via flavour-changing neutral currents in strong interactions using s = 8 TeV ATLAS data." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2015. http://dx.doi.org/10.18452/17348.

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In dieser Dissertation werden Resultate einer Suche nach der Produktion von Einzel-Top-Quarks über flavour-verletzende neutrale Ströme (FCNCs) in starken Welchselwirkungen vorgestellt. Hierfür werden Daten aus Proton-Proton-Kollisionen am Large Hadron Collider bei einer Schwerpunktsenergie von 8TeV verwendet. Die Daten wurden mit dem ATLAS-Experiment im Jahr 2012 aufgenommen und entsprechen einer integrierten Luminosität von 14.1 fb−1. In der Analyse werden FCNC-Ereignisse selektiert, in denen ein leichtes Quark (u oder c) mit einem Gluon wechselwirkt, und ein einzelnes Top-Quark und potentiel
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Alpigiani, Cristiano. "Search for rare B decays into two muons with the ATLAS detector." Thesis, Queen Mary, University of London, 2015. http://qmro.qmul.ac.uk/xmlui/handle/123456789/8922.

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The impressive progress that elementary particle physics made in the second half of the last century led to the formulation of a comprehensive theory, known as the Standard Model (SM), which correctly describes all fundamental interactions in nature, except for the gravitational one. Indirect discoveries have always played an important role in high energy physics scenario and indirect research can be considered to all intents and purposes complementary to the direct one, since allows to test much higher energy scales than those the current colliders are able to reach. This is very important no
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Kochebina, Olga. "Study of Rare Charm Decays with the LHCb Detector at CERN." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112208/document.

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Les désintégrations charmées rares interviennent principalement via des courants neutres changeant la saveur (FCNC). Le Modèle Standard (SM) n'autorise les courants qu'au niveau des boucles. Dans les désintégrations du charme, les FCNC sont sujets à une très efficace suppression de GIM. Des processus très rares sont donc à considérer. Ils sont d'excellents outils pour la recherche Nouvelle Physique (NP) au-delà du SM. Les particules de NP pourraient devenir détectables en écartant des observables telles que des rapports de branchement et des asymétries CP et angulaires prévisions de le SM. Le
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Quintana, Boris. "Search for radiative B decays to orbitally excited mesons at LHCb." Thesis, Université Clermont Auvergne‎ (2017-2020), 2019. http://www.theses.fr/2019CLFAC060.

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Cette thèse présente une étude des désintégrations radiatives des mésons B0 et Bs, produits lors des collisions de protons du Grand Collisionneur de Hadrons (LHC), au Laboratoire Européen de Physique des Particules (CERN),vers des états orbitallement excités. Elle s’inscrit dans le contexte de recherche indirecte de physique au-delà du Modèle Standard de la Physique des Particules. Les données récoltées par le détecteur LHCb pendant le Run 1(2011-2012) et le Run 2 (2015-2018) du LHC, correspondant à une luminosité intégrée de 8.7 fb−1, sont utilisées pour l’analyse. Une sélection optimisée des
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Smith, Daniel. "Study of the flavour changing neutral current β-s#gamma# at BaBar." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272066.

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Lin, Chi-Jen David. "Flavour changing neutral current processes of B and K mesons from lattice QCD." Thesis, University of Edinburgh, 1998. http://hdl.handle.net/1842/12420.

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Flavour Changing Neutral Current (FCNC) processes are essential for pinning down free parameters in the Standard Model and for probing possible new physics beyond it. In this work, we compute the non-perturbative strong-interaction effects on a collection of FCNC processes using Lattice QCD. Ratios of the relevant matrix elements of Kaon processes are computed for several initial and final meson momenta and for six light-meson masses ranging from approximately 435 MeV to 815 MeV. Fits of these ratios to the mass and recoil behaviours predicted by Chiral Perturbation Theory are then used to ext
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Kachanovich, Aliaksei [Verfasser], and U. [Akademischer Betreuer] Nierste. "Flavour-changing neutral current processes beyond the Standard Model / Aliaksei Kachanovich ; Betreuer: U. Nierste." Karlsruhe : KIT-Bibliothek, 2021. http://d-nb.info/123047577X/34.

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Kennedy, John James. "A search for single top-quark production and flavour-changing neutral-current interactions at H1." Thesis, University of Liverpool, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269575.

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Nicol, Michelle. "Analysis of the rare decay B->K*ee at LHCb." Thesis, Paris 11, 2012. http://www.theses.fr/2012PA112354/document.

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Grâce à la grande section efficace de production de paires bb, LHC offre une excellente occasion de faire des études de courants neutres changeant la saveur. Ces transitions sont sensibles aux effets de nouvelle physique. Cette thèse porte sur l'analyse des événements B->K*ee qui permettent de mesurer la fraction de photon avec une polarisation droite et donc de rechercher des signaux de nouvelle physique émis dans la transition b ->s. En effet, dans le Modèle Standard, la polarisation des photons est gauche. La paire e+e, lors que la masse invariante de la paire de leptons est basse, pr
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Veloso, Filipe Manuel Almeida. "Study of ATLAS sensitivity to FCNC top quark decays." Doctoral thesis, 2008. http://hdl.handle.net/10316/7517.

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Conference papers on the topic "Flavour Changing Neutral Current (FCNC)"

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CHAO, Yuan. "Search for Top Quark Flavour-changing Neutral-current Decays at 8 TeV." In The European Physical Society Conference on High Energy Physics. Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.180.0069.

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Tsiskaridze, Shota. "Search for flavour-changing neutral current top quark decays t to Hq in pp collisions at 8 TeV with the ATLAS detector." In 8th International Workshop on Top Quark Physics. Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.257.0030.

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Reports on the topic "Flavour Changing Neutral Current (FCNC)"

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Smith, D. Monte-Carlo Analysis of the Flavour Changing Neutral Current B \to Gamma at Babar. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/1083530.

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