Results 61 to 70 of about 30,521 (228)

The transition form factors for semi-leptonic weak decays of $J/\psi$ in QCD sum rules

open access: yes, 2007
Within the Standard Model, we investigate the semi-leptonic weak decays of $J/\psi$. The various form factors of $J/\psi$ transiting to a single charmed meson ($D^{(*)}_{(d,s)}$) are studied in the framework of the QCD sum rules. These form factors fully
A. Khodjamirian   +81 more
core   +1 more source

Measurement of the Bottom contribution to non-photonic electron production in $p+p$ collisions at $\sqrt{s} $=200 GeV [PDF]

open access: yes, 2010
The contribution of $B$ meson decays to non-photonic electrons, which are mainly produced by the semi-leptonic decays of heavy flavor mesons, in $p+p$ collisions at $\sqrt{s} =$ 200 GeV has been measured using azimuthal correlations between non-photonic ...
Aggarwal M.M.   +387 more
core   +8 more sources

Bounds on R-parity violating supersymmetric couplings from leptonic and semi-leptonic meson decays

open access: yes, 2006
We present a comprehensive update of the bounds on R-Parity violating supersymmetric couplings from lepton-flavour- and lepton-number-violating decay processes. We consider tau and mu decays as well as leptonic and semi-leptonic decays of mesons.
Ben O’Leary   +5 more
core   +1 more source

Weak Decays of Heavy-Light Mesons on the Lattice: Semi-Leptonic Formfactors [PDF]

open access: yes, 1995
We report results (on an intermediate statistics sample) of a study of weak semi-leptonic formfactors of $B$ and $D$ decays, addressing the uncertainties from mass extrapolations to chiral and to heavy quarks.
Güsken, S., Schilling, K., Siegert, G.
core   +2 more sources

Search for the semi-leptonic decays And

open access: yesPhysics Letters, 2023
We search for the semi-leptonic decays Λc+→Λπ+π−e+νe and Λc+→pKS0π−e+νe in a sample of 4.5fb−1 of e+e− annihilation data collected in the center-of-mass energy region between 4.600GeV and 4.699GeV by the BESIII detector at the BEPCII. No significant signals are observed, and the upper limits on the decay branching fractions are set to be B(Λc+→Λπ+π−e ...
Ablikim, M.   +199 more
openaire  

Semi-leptonic and Non-leptonic $B$ meson decays to charmed mesons

open access: yes, 2012
We study the semi-leptonic and non-leptonic $B$ weak decays which are governed by the $B\rightarrow D^{(*)}$ transitions. The branching ratios, CP asymmetries (CPA) and polarization fractions (FA) of non-leptonic decays are investigated in the ...
Dai Y S   +6 more
core   +1 more source

An ``Improved" Lattice Study of Semi-leptonic Decays of D-Mesons [PDF]

open access: yes, 1994
We present results of a lattice computation of the matrix elements of the vector and axial-vector currents which are relevant for the semi-leptonic decays $D \rightarrow K$ and $D \rightarrow K^*$.
Bowler, Ken C.   +8 more
core   +2 more sources

Uniting low-energy semileptonic and hadronic anomalies within SMEFT

open access: yesJournal of High Energy Physics
Two categories of four-fermion SMEFT operators are semileptonic (two quarks and two leptons) and hadronic (four quarks). At tree level, an operator of a given category contributes only to processes of the same category.
Alakabha Datta   +3 more
doaj   +1 more source

Searching for new physics in semi-leptonic baryon decays [PDF]

open access: yesModern Physics Letters A, 2017
We propose two different and complementary observables for singling out possible signals of physics beyond the Standard Model (SM) in the semi-leptonic decays [Formula: see text], both with the [Formula: see text] lepton and with a light lepton. The two observables are the partial decay width and a T-odd asymmetry, whose respective sensitivities to ...
Di Salvo, Elvio, Ajaltouni, Ziad J.
openaire   +5 more sources

Inclusive B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} $$ at the LHC: theory predictions and new-physics reach

open access: yesJournal of High Energy Physics
We present theoretical predictions for observables in inclusive B ¯ → X s ℓ + ℓ − $$ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} $$ suitable for measurements at hadron colliders through a sum-over-exclusive approach.
Tobias Huber   +5 more
doaj   +1 more source

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