Results 31 to 40 of about 1,763,375 (163)

High-pT LHC constraints on SMEFT operators affecting rare kaon and hyperon decays

Journal of High Energy Physics
We consider the constraints on new physics affecting rare kaon and hyperon decay as parametrized by a low energy effective theory that can be obtained from high-pT observables at LHC. To this end, we match the relevant low energy Wilson coefficients onto
Arnab Roy, German Valencia
doaj   +1 more source

Rare $b$-hadron decays

Comptes Rendus. Physique, 2020
Rare $b$-hadron decays provide a rich environment to search for beyond Standard Model physics effects thanks to numerous observables. In the recent years, several tensions with the SM expectations have appeared.
Egede, Ulrik, Serrano, Justine
doaj   +1 more source

FCNC B and K meson decays with light bosonic Dark Matter

Journal of High Energy Physics, 2023
We consider decays of B and K mesons into a pseudo-scalar or vector meson plus missing energy. Within the SM, these modes originate from flavor changing neutral current (FCNC) processes with two neutrinos in the final state. In this paper we consider the
Xiao-Gang He, Xiao-Dong Ma, German Valencia   +2 more
doaj   +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

More synergies from beauty, top, Z and Drell-Yan measurements in SMEFT

Journal of High Energy Physics, 2023
We perform a global analysis of Beauty, Top, Z and Drell-Yan measurements in the framework of the Standard Model effective theory (SMEFT). We work within the minimal flavor violation (MFV) hypothesis, which relates different sectors and generations ...
Cornelius Grunwald, Gudrun Hiller, Kevin Kröninger, Lara Nollen   +3 more
doaj   +1 more source

Unitarity bounds and form-factor predictions for B-meson decays

Journal of High Energy Physics
This paper has three main aims. First, I review in a pedagogical way the unitarity bounds for form factors in B-meson decays, together with the parametrisations most commonly used in phenomenological analyses.
Nico Gubernari
doaj   +1 more source

Rare $K$ decays [PDF]

, 2007
Recent results on rare $K$ decays from KTeV and NA48 are reviewed.Recent results on rare K decays from KTeV and NA48 are ...
Arenton, Michael
core  

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

Rare B decays at LHCb [PDF]

, 2007
Rare loop-induced decays are sensitive to New Physics in many Standard Model extensions. In this paper we discuss the potential of the LHCb experiment to very rare $\mathrm{B_s} \to \mu^+ \mu^-$ decays, radiative penguin $\mathrm{b \to s}\gamma$ decays ...
Lenzi, Michela
core  

First observation of the decays B0 -> D+K-π+π- and B- -> D0K-π+π- [PDF]

, 2012
First observations of the Cabibbo-suppressed decays B0→D+K-π+π- and B-→D0K-π+π- are reported using 35pb -1 of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo-favored decays, from ...
Harrison, P. F., Dossett, D., Whitehead, M. (Mark), HASH(0x55a67fd521a8), HASH(0x55a67fb0f6a0), Poluektov, Anton, Kreps, Michal, Reid, Matthew M., HASH(0x55a67faabe68), Craik, Daniel, Back, J. J., Pilar, T., HASH(0x55a67fe26188), Williams, M. P., Latham, Thomas, HASH(0x55a67fd570d0), Gershon, T. J., Silva Coutinho, R.   +17 more
core   +1 more source