Results 71 to 80 of about 30,887 (231)

Applicability of Perturbative QCD to $B\to D$ Decays

, 1994
We examine the applicability of perturbative QCD to $B$ meson decays into $D$ mesons. We find that the perturbative QCD formalism, which includes Sudakov effects at intermediate energy scales, is applicable to the semi-leptonic decay $B\to D l\nu$, when ...
A. N. Kamal, A. Szczepaniak, C. Bernard, C. E. Carlson, G. P. Lepage, H. Georgi, H. n. Li, H. n. Li, H. n. Li, Hsiang-nan Li, J. Bolz, J. Botts, J. C. Collins, J. D. Bjorken, J. G. Körner, K. Berkelman, K. Hikasa, M. Bauer, M. Bauer, M. Neubert, M. Neubert, N. Isgur, N. Isgur, R. Akhoury, R. Jakob, T. D. Cohen, V. L. Chernyak   +26 more
core   +1 more source

High-pT LHC constraints on SMEFT operators affecting rare kaon and hyperon decays

Journal of High Energy Physics
We consider the constraints on new physics affecting rare kaon and hyperon decay as parametrized by a low energy effective theory that can be obtained from high-pT observables at LHC. To this end, we match the relevant low energy Wilson coefficients onto
Arnab Roy, German Valencia
doaj   +1 more source

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, Jakub Salko, Aleks Smolkovič, Peter Stangl   +3 more
doaj   +1 more source

New determination of |Vcb| using the three-loop QCD corrections for the B → D⁎ semi-leptonic decays [PDF]

Nuclear Physics, 2022
Hua Zhou, Qing Yu, Xu-Chang Zheng, Hai-Bing Fu, Xing-Gang Wu   +4 more
semanticscholar   +1 more source

(Semi-) leptonic charmed meson decays at BESIII [PDF]

Proceedings of 10th International Workshop on Charm Physics — PoS(CHARM2020), 2021
BESIII has collected 2.93 fb$^{-1}$ and 6.32 fb$^{-1}$ of $e^+ e^-$ collision data samples at the center-of-mass energies 3.773 and 4.178-4.226 GeV, respectively. We report recent measurements of the (semi-) leptonic decays $D_{s} \to \ell^+ \nu_{\ell}~(\ell=\mu, \tau)$ and $D_{(s)} \to X \ell^+ \nu_{\ell}$ [$X=\eta, K_{1}(1270)$ or denotes generic ...
openaire   +1 more source

NLO predictions for a lepton, missing transverse momentum and dijets at the Tevatron

, 2011
n this letter we investigate the various processes that can contribute to a final state consisting of a lepton, missing transverse momentum and two jets at Next to Leading Order (NLO) at the Tevatron.
Campbell, John M., Martin, Adam, Williams, Ciaran   +2 more
core   +1 more source

Extractions of |V ub |/|V cb | from a combined study of the exclusive b → u c ℓ − ν ¯ ℓ $$ b\to u(c){\ell}^{-}{\overline{\nu}}_{\ell } $$ decays

Journal of High Energy Physics, 2023
We have extracted the ratio |V ub |/|V cb | from a combined study of the available inputs on B ¯ → π ρ ω ℓ − ν ¯ ℓ $$ \overline{B}\to \left(\pi, \rho, \omega \right){\ell}^{-}{\overline{\nu}}_{\ell } $$ and B ¯ B ¯ s → D ∗ D s ∗ ℓ − ν ¯ ℓ ℓ = μ or e ...
Aritra Biswas, Soumitra Nandi, Ipsita Ray   +2 more
doaj   +1 more source

Light scalars in semi-leptonic decays of heavy quarkonia

, 2012
We study the mechanism of production of the light scalar mesons in the $D_s^+\to\pi^+\pi^- e^+\nu$ decays: $D_s^+\to s\bar s e^+\nu\to [\sigma(600)+f_0(980)] e^+\nu\to\pi^+\pi^- e^+\nu$, and compare it with the mechanism of production of the light ...
A. V. Kiselev, N. N. Achasov, N. N. Achasov   +2 more
core   +1 more source

SCET sum rules for Λ b → Λℓ + ℓ − , Λγ decays

Journal of High Energy Physics
We construct light-cone sum rules for various types of effective form factors in the Λ b → Λℓ + ℓ − and Λ b → Λγ decays by analyzing vacuum-to-Λ b (or γ *-to-Λ b ) correlation functions with the light Λ-baryon interpolating current.
Long-Shun Lu, Cai-Dian Lü, Yue-Long Shen, Yan-Bing Wei   +3 more
doaj   +1 more source

Muon mass correction in partial wave analyses of charmed meson semi-leptonic decays [PDF]

, 2023
Han Zhang, B. C. Ke, Yao Yu, En Wang
openalex   +1 more source