Results 1 to 10 of about 25,070 (157)
Study of the ψ(1S,2S) and ηc(1S,2S) Weak Decays into DM [PDF]
Advances in High Energy Physics, 2016 Inspired by the recent measurements on the J/ψ(1S)→Dsρ, DuK⁎ weak decays at BESIII and the potential prospects of charmonium at high-luminosity heavy-flavor experiments, we study ψ(1S,2S) and ηc(1S,2S) weak decays into final states including one charmed ...
Junfeng Sun +4 more
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Resonance form factors from finite-volume correlation functions with the external field method
Journal of High Energy Physics, 2022 A novel method for the extraction of form factors of unstable particles on the lattice is proposed. The approach is based on the study of two-particle scattering in a static, spatially periodic external field by using a generalization of the Lüscher ...
Jonathan Lozano +4 more
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Lattice QCD study of inclusive semileptonic decays of heavy mesons
Journal of High Energy Physics, 2022 We present an ab initio study of inclusive semileptonic decays of heavy mesons from lattice QCD. Our approach is based on a recently proposed method, that allows one to address the study of these decays from the analysis of smeared spectral functions ...
Paolo Gambino +7 more
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Relations among B c → J/ψ, η c form factors
Journal of High Energy Physics, 2022 We analyze the form factors parametrizing the B c → J/ψ, η c matrix elements of the operators in a generalized low-energy b → c semileptonic Hamiltonian.
P. Colangelo +4 more
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Semileptonic weak Hamiltonian to O $$ \mathcal{O} $$ (αα s ) in momentum-space subtraction schemes
Journal of High Energy Physics, 2023 The CKM unitarity precision test of the Standard Model requires a systematic treatment of electromagnetic and strong corrections for semi-leptonic decays. Electromagnetic corrections require the renormalization of a semileptonic four-fermion operator. In
M. Gorbahn +3 more
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Three-particle Lellouch-Lüscher formalism in moving frames
Journal of High Energy Physics, 2023 A manifestly relativistic-invariant Lellouch-Lüscher formalism for the decays into three identical particles with no two-to-three transitions is proposed.
Fabian Müller +3 more
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Bayesian inference for form-factor fits regulated by unitarity and analyticity
Journal of High Energy Physics, 2023 We propose a model-independent framework for fitting hadronic form-factor data, which is often only available at discrete kinematical points, using parameterisations based on to unitarity and analyticity.
J. M. Flynn, A. Jüttner, J. T. Tsang
doaj +1 more source
Approaches to inclusive semileptonic B (s)-meson decays from Lattice QCD
Journal of High Energy Physics, 2023 We address the nonperturbative calculation of the inclusive decay rate of semileptonic B (s)-meson decays from lattice QCD. Precise Standard-Model predictions are key ingredients in searches for new physics, and this type of computation may eventually ...
Alessandro Barone +4 more
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Form Factor Relations for Heavy-to-Light Transitions [PDF]
, 1995 Assuming simple properties of the spectator particle in weak decays the form factors of hadronic current matrix elements are shown to be related to a single universal function.
Alam +29 more
core +2 more sources
Prospects for a lattice calculation of the rare decay Σ+ → pℓ + ℓ −
Journal of High Energy Physics, 2023 We present a strategy for calculating the rare decay of a Σ+(uus) baryon to a proton (uud) and di-lepton pair using lattice QCD. To determine this observable one needs to numerically evaluate baryonic two-, three-, and four-point correlation functions ...
Felix Erben +4 more
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