Results 21 to 30 of about 776 (208)
Disintegration of beauty: a precision study
Journal of High Energy Physics, 2023 We update the Standard Model (SM) predictions for B-meson lifetimes within the heavy quark expansion (HQE). Including for the first time the contribution of the Darwin operator, SU(3) F breaking corrections to the matrix element of dimension-six four ...
Alexander Lenz +2 more
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B Physics and CP Violation, 1998 Latex2.09, uses sprocl.sty and epsf.sty. 10 pages with 3 postscript files included.
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Standard Model predictions for lepton flavour universality ratios of inclusive semileptonic B decays
Journal of High Energy Physics, 2022 We present Standard Model predictions for lepton flavour universality ratios of inclusive B → X(c) ℓ ν ¯ ℓ $$ \ell {\overline{\nu}}_{\ell } $$ . For the ℓ = μ, e, these ratios are very close to unity as expected.
Muslem Rahimi, K. Keri Vos
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Semi-leptonic decays of B-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 ...
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Anomalies in b → s Transitions and Dark Matter
Advances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018 Since 2013, the LHCb collaboration has reported on the measurement of several observables associated with b → s transitions, finding various deviations from their predicted values in the Standard Model. These include a set of deviations in branching ratios and angular observables, as well as in the observables RK and RK⁎, specially built to test the ...
Avelino Vicente, Farinaldo Queiroz
wiley +1 more source
Revisiting semileptonic B meson decays at next-to-next-to-leading order
Journal of High Energy Physics, 2023 We compute next-to-next-to-leading order corrections to the semileptonic decay rate of B mesons for arbitrary values of the final-state quark mass. For the contribution with one massive quark in the final state, we extend the literature result and obtain
Manuel Egner +3 more
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Study of B¯d,s⁎0→Dd,s+M- Decays with QCD Factorization Approach
Advances in High Energy Physics, Volume 2016, Issue 1, 2016., 2016 Motivated by the b‐physics experiments at running LHC and upcoming SuperKEKB/Belle‐II, the nonleptonic B¯q⁎0→Dq+M- (q = d, s and M = π, K, ρ, K⁎) weak decays are studied within QCD factorization framework. The observables of these decay modes are first predicted.
Qin Chang +5 more
wiley +1 more source
Prospects for Studies of the Free Fall and Gravitational Quantum States of Antimatter
Advances in High Energy Physics, Volume 2015, Issue 1, 2015., 2015 Different experiments are ongoing to measure the effect of gravity on cold neutral antimatter atoms such as positronium, muonium, and antihydrogen. Among those, the project GBAR at CERN aims to measure precisely the gravitational fall of ultracold antihydrogen atoms.
G. Dufour +9 more
wiley +1 more source
Semi-leptonic decays of heavy mesons [PDF]
Nuclear Physics B - Proceedings Supplements, 1999 3 pages, 3 figures (LATTICE 98 matrixelement) Corrections to figures and ...
UKQCD Collaboration, Maynard, Chris
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Exploring New Models in All Detail with SARAH
Advances in High Energy Physics, Volume 2015, Issue 1, 2015., 2015 I give an overview about the features the Mathematica package SARAH provides to study new models. In general, SARAH can handle a wide range of models beyond the MSSM coming with additional chiral superfields, extra gauge groups, or distinctive features like Dirac gaugino masses.
Florian Staub, Gordon Kane
wiley +1 more source