Results 1 to 10 of about 69,172 (223)

Test of lepton universality with B 0 → K *0 ℓ + ℓ − decays [PDF]

open access: yesJournal of High Energy Physics, 2017
A test of lepton universality, performed by measuring the ratio of the branching fractions of the B0 → K*0μ+μ− and B0 → K*0e+e− decays, RK*0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb}
Gerhard Raven
exaly   +3 more sources

FCC-ee: The Lepton Collider

open access: yesEuropean Physical Journal: Special Topics, 2019
In response to the 2013 Update of the European Strategy for Particle Physics, the Future Circular Collider (FCC) study was launched, as an international collaboration hosted by CERN. This study covers a highest-luminosity high-energy lepton collider (FCC-
J Barreiro Guimarães Da Costa   +2 more
exaly   +2 more sources

On flavourful Easter eggs for New Physics hunger and lepton flavour universality violation [PDF]

open access: yesEuropean Physical Journal C, 2017
Within the standard approach of effective field theory of weak interactions for ΔB=1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage ...
Marco Ciuchini, Marco Fedele, Ayan Paul
exaly   +2 more sources

Visible GeV ALP from TeV Vector‐Like Leptons

open access: hybridFortschritte der Physik, Volume 73, Issue 3, March 2025.
Abstract A model is presented where a GeV axion‐like‐particle (ALP) is predicted in a large portion of the parameter space due to the presence of explicit Peccei–Quinn (PQ) symmetry‐breaking terms in an exotic leptonic sector. The latter provides a solution to the muon g−2$g-2$ anomaly, within the framework of the Linear Seesaw neutrino mechanism.
Arturo de Giorgi   +2 more
openalex   +2 more sources

Test of lepton universality in beauty-quark decays [PDF]

open access: yesNature Physics, 2021
The standard model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged leptons, the electron, muon and tau, have identical electroweak interaction ...
L. C. R. Aaij   +499 more
semanticscholar   +1 more source

Test of Lepton Universality in b→sℓ^{+}ℓ^{-} Decays. [PDF]

open access: yesPhysical Review Letters, 2022
The first simultaneous test of muon-electron universality using B^{+}→K^{+}ℓ^{+}ℓ^{-} and B^{0}→K^{*0}ℓ^{+}ℓ^{-} decays is performed, in two ranges of the dilepton invariant-mass squared, q^{2}.
R. Aaij   +499 more
semanticscholar   +1 more source

Constraining new physics in entangled two-qubit systems: top-quark, tau-lepton and photon pairs [PDF]

open access: yesThe European Physical Journal C, 2022
The measurement of quantum entanglement can provide a new and most sensitive probe to physics beyond the Standard Model. We use the concurrence of the top-quark pair spin states produced at colliders to constrain the magnetic dipole term in the coupling ...
M. Fabbrichesi   +2 more
semanticscholar   +1 more source

Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021 [PDF]

open access: yes, 2022
This paper reports world averages of measurements of $b$-hadron, $c$-hadron, and $\tau$-lepton properties obtained by the Heavy Flavour Averaging Group using results available before April 2021.
H. C. Y. Amhis   +40 more
semanticscholar   +1 more source

Tools for estimating fake/non-prompt lepton backgrounds with the ATLAS detector at the LHC [PDF]

open access: yesJournal of Instrumentation, 2022
Measurements and searches performed with the ATLAS detector at the CERN LHC often involve signatures with one or more prompt leptons. Such analyses are subject to `fake/non-prompt' lepton backgrounds, where either a hadron or a lepton from a hadron decay
G. Aad   +499 more
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy