Results 71 to 80 of about 5,868 (157)
On the impact of meson mixing on B s → ϕee angular observables at low q 2
Journal of High Energy Physics, 2023 Decays based on the b → sγ transition are expected to yield left-handed photons in the Standard Model, but could be particularly sensitive to New Physics contributions modifying the short-distance Wilson coefficients C $$ \mathcal{C} $$ 7 and C ...
Sébastien Descotes-Genon +2 more
doaj +1 more source
A lattice study of semi-leptonic decays of D-mesons [PDF]
Nuclear Physics B - Proceedings Supplements, 1995 3 pages, uuencoded compressed postscript file, contribution to Lattice '94, 27 Sep - 1 Oct, Bielefeld, Germany, to appear in the ...
openaire +2 more sources
Giovanni ONORATO 1. Rare B meson decays involving leptons: theoretical framework [PDF]
, 2009 In the Standard Model (SM), the purely leptonic decay B + → l + νl proceeds via quark annihilation into a W + boson.The branching fraction is: B(B + → l + νl) = G2 F mBm 2
Leptonic B Decays
core
Radiative τ leptonic decays and the possibility to determine the τ dipole moments [PDF]
, 2016 Precise data on radiative leptonic τ decays offer the opportunity to probe the electromagnetic properties of the τ and may allow to determine its anomalous magnetic moment which, in spite of its precise Standard Model prediction, has never been measured.
Passera, Massimo +6 more
core +1 more source
Rare b decays meet high-mass Drell-Yan
Journal of High Energy Physics, 2023 Rare b hadron decays are considered excellent probes of new semileptonic four-fermion interactions of microscopic origin. However, the same interactions also correct the high-mass Drell-Yan tails.
Admir Greljo +3 more
doaj +1 more source
Form factors for semi-leptonic B decays [PDF]
, 2016 Semi-leptonic $B$ decays provide promising channels to test the Standard Model, search for signs of new physics, or determine fundamental parameters like CKM matrix elements.
Flynn, Jonathan +8 more
core
Semileptonic tau decays beyond the Standard Model
Journal of High Energy Physics, 2022 Hadronic τ decays are studied as probe of new physics. We determine the dependence of several inclusive and exclusive τ observables on the Wilson coefficients of the low-energy effective theory describing charged-current interactions between light quarks
Vincenzo Cirigliano +4 more
doaj +1 more source
Form factors for semi-leptonic B decays [PDF]
Proceedings of The 30th International Symposium on Lattice Field Theory — PoS(Lattice 2012), 2012 We report on form factors for the B->K l^+ l^- semi-leptonic decay process. We use several lattice spacings from a=0.12 fm down to 0.06 fm and a variety of dynamical quark masses with 2+1 flavors of asqtad quarks provided by the MILC Collaboration. These ensembles allow good control of the chiral and continuum extrapolations.
Zhou, Ran +9 more
openaire +2 more sources
Studying semi-leptonic b→(s,d)νν¯ decays in the MSSM without R-parity [PDF]
, 2009 We present a complete study of R-parity violating supersymmetric effects in thirteen exclusive and inclusive semi-leptonic b→(s,d)νν¯ decays; Bu+→K(∗)+νν¯, Bd0→K(∗)0νν¯, Bs0→ϕνν¯, Bd0→π0(ρ0)νν¯, Bu+→π+(ρ+)νν¯, Bs0→K(∗)0νν¯ and B→Xs,dνν¯ decay modes.
Wang, Ru-Min, Kim, C.S.
core +1 more source
Journal of High Energy PhysicsWe study the available data on exclusive leptonic and semileptonic c → sℓ + ν decays within the Standard Model and beyond. Our analysis accounts for theory correlations between the relevant hadronic matrix elements through application of dispersive ...
Carolina Bolognani +3 more
doaj +1 more source