Results 71 to 80 of about 2,235,212 (197)

A lattice study of semi-leptonic decays of D-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 ...
openaire   +2 more sources

Form factors for semi-leptonic B decays [PDF]

Proceedings of The 30th International Symposium on Lattice Field Theory — PoS(Lattice 2012), 2012
We report on form factors for the B->K l^+ l^- semi-leptonic decay process. We use several lattice spacings from a=0.12 fm down to 0.06 fm and a variety of dynamical quark masses with 2+1 flavors of asqtad quarks provided by the MILC Collaboration. These ensembles allow good control of the chiral and continuum extrapolations.
Zhou, Ran, Gottlieb, Steven, Bailey, Jon A., Du, Daping, El-Khadra, Aida X., Jain, R. D., Kronfeld, Andreas S., Van de Water, Ruth S., Liu, Yuzhi, Meurice, Yannick   +9 more
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Non-Perturbative Heavy Quark Effective Theory: An application to Semi-Leptonic B-Decays [PDF]

, 2015
We review a lattice strategy how to non-perturbatively determine the coefficients in the HQET expansion of all components of the heavy-light axial and vector currents, including 1/m_h-corrections.
Sommer, Rainer, Simma, Hubert, Heitger, Jochen, Della Morte, Michele ; id_orcid, Della Morte, Michele, Jochen Heitger, Rainer Sommer, Michele Della Morte, Hubert Simma   +8 more
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Radiative semileptonic decays of beautiful hadrons

Journal of High Energy Physics
We derive predictions for the hadronic matrix elements of radiative semileptonic decays of beautiful hadrons within Heavy Quark Effective Theory (HQET), relevant for future measurements at Belle II and LHCb.
Federico Cima, Michele Papucci
doaj   +1 more source

Heavy quark symmetry behind b → c semileptonic sum rule

Journal of High Energy Physics
Lepton flavor universality violations in semileptonic b → c transitions have garnered attention over a decade. For $${R}_{{H}_{c}}={\text{BR}}\left({H}_{b}\to {H}_{c}\tau {\overline{\nu }}_{\tau }\right)/{\text{BR}}\left({H}_{b}\to {H}_{c}{\ell ...
Motoi Endo, Syuhei Iguro, Satoshi Mishima, Ryoutaro Watanabe   +3 more
doaj   +1 more source

Charmless Non-Leptonic Multi-Body B decays [PDF]

, 2017
We review the theoretical and phenomenological status of two- and three-body charmless non- leptonic B decays, with an emphasis on factorization ...
Virto Iñigo, Javier
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A first study of the semi-leptonic decay of the Λ baryon [PDF]

Nuclear Physics B - Proceedings Supplements, 1997
We present the preliminary results of the first Lattice study of the baryonic Isgur and Wise function obtained from the matrix element of the weak current between $Λ$-baryon external states. Its dependence on the heavy and light quark masses is studied. Some result on the semi-leptonic decay $Λ_b\toΛ_c +lν$ are given.
openaire   +2 more sources

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, Méril Reboud, Danny van Dyk, Javier Virto   +3 more
doaj   +1 more source

Unitarity bounds and form-factor predictions for B-meson decays

Journal of High Energy Physics
This paper has three main aims. First, I review in a pedagogical way the unitarity bounds for form factors in B-meson decays, together with the parametrisations most commonly used in phenomenological analyses.
Nico Gubernari
doaj   +1 more source

Semi-leptonic news [PDF]

, 1989
We present our recent results for the semi-leptonic decays K {yields} {pi}e{nu}, D {yields} Ke{nu}, D {yields} {pi}e{nu} and some exploratory data on B {yields} De{nu} and B {yields} {pi}e{nu}.
El-Khadra, Aida X., Bernard, Claude W., Soni, Amarjit   +2 more
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