Results 11 to 20 of about 13,580 (268)
Journal of High Energy Physics, 2023 Leptoquarks with masses between 2 TeV and 50 TeV are commonly invoked to explain deviations between data and Standard-Model (SM) predictions of several observables in the decays b → cτ ν ¯ $$ b\to c\tau \overline{\nu} $$ and b → sℓ + ℓ − with ℓ = e, μ ...
Marco Fedele +2 more
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Rare b decays meet high-mass Drell-Yan
Journal of High Energy Physics, 2023 Rare b hadron decays are considered excellent probes of new semileptonic four-fermion interactions of microscopic origin. However, the same interactions also correct the high-mass Drell-Yan tails.
Admir Greljo +3 more
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On the impact of meson mixing on B s → ϕee angular observables at low q 2
Journal of High Energy Physics, 2023 Decays based on the b → sγ transition are expected to yield left-handed photons in the Standard Model, but could be particularly sensitive to New Physics contributions modifying the short-distance Wilson coefficients C $$ \mathcal{C} $$ 7 and C ...
Sébastien Descotes-Genon +2 more
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Dispersive analysis of B → K (*) and B s → ϕ form factors
Journal of High Energy Physics, 2023 We propose a stronger formulation of the dispersive (or unitarity) bounds à la Boyd-Grinstein-Lebed (BGL), which are commonly applied in analyses of the hadronic form factors for B decays.
Nico Gubernari +3 more
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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
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EPJ Web of Conferences, 2013 This review presents recent results on key measurements of rare B and τ decays performed at the LHC and the TeVatron. Its main focus lies on recent measurements of the decay B(s)0 → µ+µ− at the two colliders and of angular observables for the decay B0 ...
Elsasser Christian
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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 +2 more
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Comptes Rendus. Physique, 2020 The article reviews the status of rare K decay physics. The explored area covers a broad program, ranging from precise tests of flavour theory and CP-violation to the searches for explicit violations of the standard model and the study of strong ...
Ceccucci, Augusto, Lazzeroni, Cristina
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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 +3 more
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Towards a New μ→eγ Search with the MEG II Experiment: From Design to Commissioning
Universe, 2021 The MEG experiment represents the state of the art in the search for the Charged Lepton Flavour Violating μ+→e+γ decay. With its first phase of operations at the Paul Scherrer Institut (PSI), MEG set the most stringent upper limit on the BR (μ+→e+γ)≤4.2 ...
Marco Chiappini +6 more
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