Results 1 to 10 of about 280,588 (221)

Study of charm mixing and CP violation with D0 → K±π∓π±π∓ decays

Journal of High Energy Physics
A study of charm mixing and CP violation in D 0 → K ± π ∓ π ± π ∓ decays is performed using data collected by the LHCb experiment in proton-proton collisions from 2015 to 2018, corresponding to an integrated luminosity of 6 fb −1.
Gianluca Zúnica, Roel Aaij, G Scriven
exaly   +2 more sources

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, Fanrong Xu, Qiaoyi Wen, Yu Gu   +3 more
doaj   +1 more source

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
doaj   +1 more source

Tau and charm decays

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

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, Yuval Grossman, Stefan Schacht   +2 more
doaj   +1 more source

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, Jernej F. Kamenik, Arman Korajac, Nejc Košnik   +3 more
doaj   +1 more source

Revisiting lifetimes of doubly charmed baryons

Journal of High Energy Physics, 2023
We present updated predictions for lifetimes of doubly charmed baryons, within the heavy quark expansion, including available NLO α s contributions and newly-computed terms in the 1/m c series. Our improved results confirm the expected hierarchy τ Ξ cc +
Lovro Dulibić, James Gratrex, Blaženka Melić, Ivan Nišandžić   +3 more
doaj   +1 more source

Lifetimes of singly charmed hadrons

Journal of High Energy Physics, 2022
We provide an extensive study of the lifetimes of singly charmed baryons and mesons, within the heavy quark expansion with all known corrections included.
James Gratrex, Blaženka Melić, Ivan Nišandžić   +2 more
doaj   +1 more source