Results 61 to 70 of about 30,887 (231)

Uniting low-energy semileptonic and hadronic anomalies within SMEFT

Journal of High Energy Physics
Two categories of four-fermion SMEFT operators are semileptonic (two quarks and two leptons) and hadronic (four quarks). At tree level, an operator of a given category contributes only to processes of the same category.
Alakabha Datta, Jacky Kumar, Suman Kumbhakar, David London   +3 more
doaj   +1 more source

Inclusive B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} $$ at the LHC: theory predictions and new-physics reach

Journal of High Energy Physics
We present theoretical predictions for observables in inclusive B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} $$ suitable for measurements at hadron colliders through a sum-over-exclusive approach.
Tobias Huber, Tobias Hurth, Jack Jenkins, Enrico Lunghi, Qin Qin, K. Keri Vos   +5 more
doaj   +1 more source

Strange mass corrections to hyperonic semi-leptonic decays in statistical model [PDF]

, 2013
We study the spin distribution, weak decay coupling constant ratios for strange baryon octets with SU(3) breaking effects. Baryon is taken as an ensemble of quark-gluon Fock states in the sea with three valence quarks with definite spin, color and flavor
A. Upadhyay, M. Batra
semanticscholar   +1 more source

Boosting Higgs discovery - the forgotten channel

, 2010
Searches for a heavy Standard Model Higgs boson focus on the 'gold plated mode' where the Higgs decays to two leptonic Z bosons. This channel provides a clean signature, in spite of the small leptonic branching ratios.
A. Hasenfratz, Christoph Hackstein, M. Luscher, M. J. G. Veltman, Michael Spannowsky, V. A. Novikov   +5 more
core   +1 more source

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, David Díaz-Calderón, Adam Falkowski, Martín González-Alonso, Antonio Rodríguez-Sánchez   +4 more
doaj   +1 more source

Estimating form factors of Bs → Ds(*) and their applications to semi-leptonic and non-leptonic decays [PDF]

, 2011
B0s → Ds− and B0s → Ds*− weak transition form factors are estimated for the whole physical region with a method based on an instantaneous approximated Mandelstam formulation of transition matrix elements and the instantaneous Bethe–Salpeter equation.
Xiang-Jun Chen, Hui-Feng Fu, C. Kim, Guo-Li Wang   +3 more
semanticscholar   +1 more source

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, Ioannis Plakias, Olcyr Sumensari   +2 more
doaj   +1 more source

Electroweak Penguin B Decays at Belle

, 2003
We summarise the most recent results of the Belle experiment about flavour changing neutral current (FCNC) radiative and (semi-) leptonic B decays.
Koppenburg, Patrick
core   +1 more source

Investigating non-local contributions in B s → ϕ ℓ ¯ ℓ $$ {B}_s\to \phi \overline{\ell}\ell $$ including higher-twist effects

Journal of High Energy Physics
We analyze the impact of higher-twist three-particle B s -meson light-cone distribution amplitudes (LCDAs) on the non-local form factors for the B s → ϕ ℓ ¯ ℓ $$ {B}_s\to \phi \overline{\ell}\ell $$ transition focusing on the ‘charm-loop’ contribution ...
M. S. A. Alam Khan, Rusa Mandal, Praveen S Patil, Ipsita Ray   +3 more
doaj   +1 more source

Dispersive analysis of B → K (*) and B s → ϕ form factors

Journal of High Energy Physics, 2023
We propose a stronger formulation of the dispersive (or unitarity) bounds à la Boyd-Grinstein-Lebed (BGL), which are commonly applied in analyses of the hadronic form factors for B decays.
Nico Gubernari, Méril Reboud, Danny van Dyk, Javier Virto   +3 more
doaj   +1 more source