Results 41 to 50 of about 30,887 (231)
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
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Towards the precision measurement of CP violation in B → D * μν decays at LHCb
Journal of High Energy Physics, 2023 Measurement of CP-violating observables in semileptonic decays is a sensitive null-test of the Standard Model: any CP violation would be an unambiguous sign of New Physics effects.
V. Dedu, A. Poluektov
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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
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Charm physics confronts high-p T lepton tails
Journal of High Energy Physics, 2020 We present a systematic survey of possible short-distance new-physics effects in (semi)leptonic charged- and neutral-current charmed meson decays. Using the Standard Model Effective Field Theory (SMEFT) to analyze the most relevant experimental data at ...
Javier Fuentes-Martín +3 more
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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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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
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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
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Current Direct Neutrino Mass Experiments
Advances in High Energy Physics, Volume 2013, Issue 1, 2013., 2013 In this contribution, we review the status and perspectives of direct neutrino mass experiments, which investigate the kinematics of β‐decays of specific isotopes (3H, 187Re, 163Ho) to derive model‐independent information on the averaged electron (anti)neutrino mass. After discussing the kinematics of β‐decay and the determination of the neutrino mass,
G. Drexlin +4 more
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Coherent and Incoherent Neutral Current Scattering for Supernova Detection
Advances in High Energy Physics, Volume 2012, Issue 1, 2012., 2012 The total cross sections as well as the neutrino event rates are calculated in the neutral current neutrino scattering off 40Ar and 132Xe isotopes at neutrino energies (Ev < 100 MeV). The individual contribution coming from coherent and incoherent channels is taking into account.
P. C. Divari, Guey-Lin Lin
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(Semi-)Leptonic D decays at BESIII
Nuclear and Particle Physics Proceedings, 2022 BESIII has collected 2.93 fb-1 of data at 3.773 GeV, and 6.3 fb-1 of data between 4.18 and 4.23 GeV, respectively. We will report precison measurements of the decay constants fDs+ and the CKM matrix elements |Vcs| via D(s)+ -> l+v (l=mu, tau), which are important to test the LQCD calculations and the CKM matrix unitarity.
openaire +2 more sources