Results 91 to 100 of about 5,868 (157)

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
core   +1 more source

Challenging B ¯ s → D s ∗ $$ {\overline{B}}_{(s)}\to {D}_{(s)}^{\left(\ast \right)} $$ form factors with the heavy quark expansion

Journal of High Energy Physics
Recent publications by three lattice QCD collaborations have provided an unprecedented wealth of theoretical predictions for the B ¯ q → D q ∗ $$ {\overline{B}}_q\to {D}_q^{\left(\ast \right)} $$ form factors, for spectator flavours q = u/d and q = s. We
Marzia Bordone, Nico Gubernari, Martin Jung, Danny van Dyk   +3 more
doaj   +1 more source

Two-loop QCD correction to differential semi-leptonic b --> u decays in the shape-function region [PDF]

, 2009
We calculate the two-loop QCD correction to the form factors of on-shell b-quark decay to an energetic massless quark, which constitutes the last missing piece required for an View the MathML source determination of |Vub| from inclusive semi-leptonic ...
Beneke, M, Huber, T, Li, X Q, Huber, Tobias, Beneke, Martin, Li, Xin-Qiang   +5 more
core   +1 more source

(Semi-) leptonic $D_{s}$ decays at BESIII [PDF]

Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021), 2022
openaire   +2 more sources

Nonperturbative parameters of inclusive Λ b decays from Small Velocity Sum Rules

Journal of High Energy Physics
We investigate the nonperturbative parameters entering the heavy quark expansion for the inclusive decay rates of the Λ b baryon, focusing on the kinetic term μ ̂ π 2 $$ {\hat{\mu}}_{\pi}^2 $$ and the Darwin term ρ ̂ D 3 $$ {\hat{\rho}}_D^3 $$ .
Blaženka Melić, Ivan Nišandžić
doaj   +1 more source

Semi-leptonic decays of a particle to three bodies

Visión electrónica, 2018
Is presented the dynamics and kinematics of the semi-leptonic decays with interaction  V-A calculating the decay width and the fraction of decay for each process using spectator model. The results are compared with the experimental data of the table particle data group, which show that the model prediction for this type of decay can be considered as a
Mauricio Rozo-Clavijo, Carlos Germán Cortés-Hernández, Javier Alberto Olarte-Torres   +2 more
openaire   +2 more sources

Rare semi-leptonic B meson decays [PDF]

, 2014
In this thesis, novel corrections to B → X˦ and B → Xl+l- decays, where X is a pseudoscalar or vector meson, are presented. These are the chromomagnetic matrix element, weak annihilation in a general four-quark operator basis and a long-distance charm ...
Lyon, James David
core  

Review of D Semi-leptonic Decays

, 2012
Semi-leptonic D decays continue to play an important role in the field of flavor physics. During this presentation, recent measurements from pseudo-scalar to pseudo-scalar modes, pseudo-scalar to vector modes, and rare modes will be discussed. These results are important for many purposes, such as validating the machinery of lattice QCD, extracting CKM
openaire   +2 more sources

Analyzing the semileptonic and nonleptonic B c → J/ψ, η c decays

Journal of High Energy Physics
This study focuses on the decay of the B c meson to S-wave charmonia. Starting with lattice inputs on B c → J/ψ form factors, we have obtained the B c → η c form factors using heavy quark spin symmetry (HQSS) relations between the associated form factors
Aritra Biswas, Soumitra Nandi, Shantanu Sahoo   +2 more
doaj   +1 more source

Semileptonic and leptonic B decays, circa 2016 [PDF]

, 2017
We summarize the status of semileptonic and leptonic B decays, including |Vcb| and |Vub| exclusive and inclusive determinations, decays to excited states of the charm meson spectrum and decays into tau ...
RICCIARDI, GIULIA
core   +1 more source