Results 11 to 20 of about 12,458,012 (347)

Analysis of Neutral B-Meson Decays into Two Muons. [PDF]

open access: yesPhysical Review Letters, 2021
Branching fraction and effective lifetime measurements of the rare decay B_{s}^{0}→μ^{+}μ^{-} and searches for the decays B^{0}→μ^{+}μ^{-} and B_{s}^{0}→μ^{+}μ^{-}γ are reported using proton-proton collision data collected with the LHCb detector at ...
L. C. R. Aaij   +499 more
semanticscholar   +1 more source

Reading the footprints of the B-meson flavor anomalies [PDF]

open access: yesJournal of High Energy Physics, 2021
Motivated by the recent LHCb announcement of a 3.1σ violation of lepton- flavor universality in the ratio RK = Γ(B → Kμ+μ−)/Γ(B → Ke+e−), we present an updated, comprehensive analysis of the flavor anomalies seen in both neutral-current (b → sℓ+ℓ−) and ...
C. Cornella   +4 more
semanticscholar   +1 more source

Leptoquark option for B -meson anomalies and leptonic signatures [PDF]

open access: yesPhysical Review D, 2021
We entertain the option of scalar leptoquarks to explain the anomalies in the semi-leptonic decays of B-mesons and the discrepancies in the lepton (g − 2)l’s including the recent results at Fermilab E989. The RK(∗) and RD(∗) anomalies can be accommodated
Hyun Min Lee
semanticscholar   +1 more source

B →P and B →V form factors from B-meson light-cone sum rules beyond leading twist [PDF]

open access: yesJournal of High Energy Physics, 2018
A bstractWe provide results for the full set of form factors describing semileptonic B-meson transitions to pseudoscalar mesons π, K, D¯$$ \overline{D} $$ and vector mesons ρ, K∗, D¯∗$$ {\overline{D}}^{\ast } $$.
N. Gubernari, A. Kokulu, D. Dyk
semanticscholar   +2 more sources

Search for an Axionlike Particle in B Meson Decays.

open access: yesPhysical Review Letters, 2022
Axionlike particles (ALPs) are predicted in many extensions of the standard model, and their masses can naturally be well below the electroweak scale. In the presence of couplings to electroweak bosons, these particles could be emitted in flavor-changing
J. Lees   +244 more
semanticscholar   +1 more source

Two-loop radiative jet function for exclusive B-meson and Higgs decays [PDF]

open access: yesJournal of High Energy Physics, 2020
The rare radiative B-meson decay B−→γℓ−v¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt ...
Z. Liu, M. Neubert
semanticscholar   +1 more source

Neutral B -meson mixing from full lattice QCD at the physical point [PDF]

open access: yesPhysical Review D, 2019
We calculate the bag parameters for neutral $B$-meson mixing in and beyond the Standard Model, in full four-flavor lattice QCD for the first time. We work on gluon field configurations that include the effect of $u$, $d$, $s$, and $c$ sea quarks with the
R. Dowdall   +6 more
semanticscholar   +1 more source

Pati-Salam explanations of the B-meson anomalies [PDF]

open access: yesJournal of High Energy Physics, 2018
A bstractWe provide a combined explanation of the increasingly tantalizing B-meson anomalies, both in RK∗$$ {R}_{K^{\left(\ast \right)}} $$ and RD∗$$ {R}_{D^{\left(\ast \right)}} $$, in the Pati-Salam model with minimal matter content.
J. Heeck, D. Teresi
semanticscholar   +1 more source

Weak radiative decays of the B meson and bounds on $$M_{H^\pm }$$MH± in the Two-Higgs-Doublet Model [PDF]

open access: yes, 2017
In a recent publication (Abdesselam et al. arXiv:1608.02344), the Belle collaboration updated their analysis of the inclusive weak radiative B-meson decay, including the full dataset of $$(772 \pm 11)\times 10^6~B\bar{B}$$(772±11)×106BB¯ pairs.
M. Misiak, M. Steinhauser
semanticscholar   +1 more source

A challenge to lepton universality in B meson decays [PDF]

open access: yesHyperfine Interactions, 2018
One of the key assumptions of the Standard Model of fundamental particles is that the interactions of the charged leptons, namely electrons, muons, and taus, differ only because of their different masses.
V. Lüth
semanticscholar   +1 more source

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