Results 31 to 40 of about 271,063 (111)

Search for CP violation in D s + $$ {D}_{(s)}^{+} $$ → K − K + K + decays

open access: yesJournal of High Energy Physics, 2023
A search for direct CP violation in the Cabibbo-suppressed decay D s + $$ {D}_s^{+} $$ → K − K + K + and in the doubly Cabibbo-suppressed decay D + → K − K + K + is reported.
The LHCb collaboration   +1060 more
doaj   +1 more source

Higgs boson decay to charm pair at full one-loop level in the MSSM with flavour violation

open access: yes, 2014
We study the decay of the lightest neutral Higgs boson to a charm quark pair at full one-loop level in the MSSM with non-minimal quark flavour violation (QFV). In the numerical analysis we consider mixing between the second and the third squark generation and all relevant constraints from B meson data are taken into account.
Eberl, H.   +4 more
openaire   +2 more sources

The charm of 331

open access: yesJournal of High Energy Physics, 2021
We perform a detailed analysis of flavour changing neutral current processes in the charm sector in the context of 331 models. As pointed out recently, in the case of Z′ contributions in these models there are no new free parameters beyond those already ...
Andrzej J. Buras   +3 more
doaj   +1 more source

ΔA CP within the Standard Model and beyond

open access: yesJournal of High Energy Physics, 2019
In light of the recent LHCb observation of CP violation in the charm sector, we review standard model (SM) predictions in the charm sector and in particular for ΔA CP.
Mikael Chala   +3 more
doaj   +1 more source

One sum to rule them all: a second order master rate sum rule for charm decays

open access: yesJournal of High Energy Physics
We show that within the Standard Model any system of hadronic weak charm decays related by U-spin satisfies the following rate sum rule: sum of CF and DCS CKM − free rates sum of SCS CKM − free rates = 1 , $$ \frac{\left(\mathrm{sum}\ \mathrm{of ...
Margarita Gavrilova   +3 more
doaj   +1 more source

Anatomy of non-leptonic two-body decays of charmed mesons into final states with η′

open access: yesJournal of High Energy Physics
We show that D → Pη′ decay amplitudes, where P = K, π, η, cannot be simply related to their D → Pη counterparts with a single η 0–η 8 mixing angle. We propose a novel, consistent treatment of η 0–η 8 mixing for application in D → Pη and D → Pη′ decays ...
Carolina Bolognani   +3 more
doaj   +1 more source

Charmed baryon decays: SU(3) F breaking and CP violation

open access: yesJournal of High Energy Physics
We present a comprehensive study of anti-triplet charmed baryon decays into octet baryons and pseudoscalar mesons using the SU(3) F flavor symmetry framework.
Chang Yang, Xiao-Gang He, Chia-Wei Liu
doaj   +1 more source

CP violation in charmed meson decays into final states with η ′

open access: yesJournal of High Energy Physics
We derive Standard Model predictions for the CP asymmetries of singly-Cabibbo suppressed D → Pη ′ decays, where P = K, π, η. Our predictions are based on the approximate SU(3) F symmetry of QCD and include first-order symmetry-breaking effects in a ...
Carolina Bolognani   +3 more
doaj   +1 more source

Standard model benchmarks for D 0 → K − K +, π − π +, K S 0 K S 0 $$ {K}_{\mathrm{S}}^0{K}_{\mathrm{S}}^0 $$ decays

open access: yesJournal of High Energy Physics
The non-leptonic D 0 → K − K + and D 0 → π − π + decays are powerful probes of the Standard Model and are related to each other through the U -spin symmetry of the strong interaction. Using lattice QCD inputs we calculate the corresponding colour-allowed
Robert Fleischer   +3 more
doaj   +1 more source

Final-state rescattering mechanism of charmed baryon decays

open access: yesJournal of High Energy Physics
The dynamical studies on the non-leptonic weak decays of charmed baryons are always challenging, due to the large non-perturbative contributions at the charm scale. In this work, we develop the final-state rescattering mechanism to study the two-body non-
Cai-Ping Jia   +3 more
doaj   +1 more source

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