Results 1 to 10 of about 77 (77)
Possible anomalies in Higgs decay: charm-suppression and flavour-violation [PDF]
The European Physical Journal C, 2009 12 pages, 3 ...
Bordes Villagrasa, José M. +2 more
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Weak decays of antitriplet charmed baryons from the perspective of flavor symmetry
Journal of High Energy Physics, 2023 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
Huiling Zhong +3 more
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Generation of SU(3) sum rule for charmed baryon decay
Journal of High Energy Physics, 2022 Flavor SU(3) symmetry is a powerful tool to analyze charmed baryon decays. In this work, we propose an approach to generate SU(3) sum rules for the singly and doubly charmed baryon decays without writing the Wigner-Eckhart invariants explicitly. The SU(3)
Di Wang
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Flavour-violating decays of mixed top-charm squarks at the LHC [PDF]
The European Physical Journal C, 2018 We explore signatures related to squark decays in the framework of non-minimally flavour-violating Supersymmetry. We consider a simplified model where the lightest squark consists of an admixture of charm and top flavour. By recasting the existing LHC searches for top and charm squarks, we show that the limits on squark masses from these analyses are ...
Amit Chakraborty +6 more
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Comptes Rendus. Physique, 2020 A summary of recent precise results in tau and charm physics is presented. Topics include leptonic and hadronic tau decays, lepton flavour and lepton number violation, charm mixing and $\mathit{CP}$ violation, leptonic and semileptonic charm decays, rare
Gersabeck, Evelina, Pich, Antonio
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Quark-flavour violating Higgs decays to charm and bottom pairs in the MSSM [PDF]
Nuclear and Particle Physics Proceedings, 2017 We calculate the decay width of $h^0 \to b \bar{b}$ in the Minimal Supersymmetric Standard Model (MSSM) with quark-flavour violation (QFV) at full one-loop level. The effect of $\tilde{c}-\tilde{t}$ mixing and $\tilde{s}-\tilde{b}$ mixing is studied taking into account the constraints from the B-meson data.
Ginina, E. +4 more
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A U-spin anomaly in charm CP violation
Journal of High Energy Physics, 2023 Recent LHCb data shows that the direct CP asymmetries of the decay modes D 0 → π + π − and D 0 → K + K − have the same sign, violating an improved U-spin limit sum rule in an unexpected way at 2.1σ.
Stefan Schacht
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Generation of isospin sum rules in heavy hadron weak decays
Journal of High Energy Physics, 2023 Isospin symmetry is the most precise flavor symmetry. In this work, we propose an approach to generate isospin sum rules for heavy hadron decays without the Wigner-Eckhart invariants. The effective Hamiltonian of heavy quark weak decay is fully invariant
Di Wang
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The mathematical structure of U-spin amplitude sum rules
Journal of High Energy Physics, 2022 We perform a systematic study of SU(2) flavor amplitude sum rules with particular emphasis on U-spin. This study reveals a rich mathematical structure underlying the sum rules that allows us to formulate an algorithm for deriving all U-spin amplitude sum
Margarita Gavrilova +2 more
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Correlating New Physics Effects in Semileptonic ∆C = 1 and ∆S = 1 Processes
Journal of High Energy Physics, 2023 We present constraints on the left-handed dimension-6 interactions that contribute to semileptonic and leptonic decays of K, D, pions and to nuclear beta decay. We employ the flavour covariant description of the effective couplings, identify universal CP
Svjetlana Fajfer +3 more
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