Results 51 to 60 of about 776 (208)

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

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

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

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

Modern 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

Highlight of Charm Physics at BESIII

EPJ Web of Conferences, 2014
In this talk, we present the recent results of charm physics from the BESIII collaboration. This talk covers the studies of the leptonic and semi-leptonic decays of D mesons, and the measurement of the strong phase difference based on the quantum ...
Liu P. L.
doaj   +1 more source

Constraining |V cs | and physics beyond the Standard Model from exclusive (semi)leptonic charm decays

Journal of High Energy Physics
We study the available data on exclusive leptonic and semileptonic c → sℓ + ν decays within the Standard Model and beyond. Our analysis accounts for theory correlations between the relevant hadronic matrix elements through application of dispersive ...
Carolina Bolognani, Méril Reboud, Danny van Dyk, K. Keri Vos   +3 more
doaj   +1 more source

Measurement of heavy-flavour production, correlations and jets with ALICE

EPJ Web of Conferences, 2018
In this article, recent ALICE measurements of the RAA and v2 of electrons at mid-rapidity (|y|
Sakai Shingo
doaj   +1 more source

Search for the semi-leptonic decays $Λ_c^+ \to Λπ^+ π^- e^+ ν_e$ and $Λ_c^+ \to p K_S^0 π^- e^+ ν_e$ [PDF]

, 2023
BESIII Collaboration, M. Ablikim, М. Н. Ачасов, P. Adlarson, R. Aliberti, A. Amoroso, M. R. An, Q. An, Y. Bai, O. Bakina, I. Balossino, Y. Ban, V. Batozskaya, K. Begzsuren, N. Berger, M. Bertani, D. Bettoni, F. Bianchi, E. Bianco, J. Bloms, A. Bortone, I. Boyko, R. A. Briere, A. Brueggemann, H. Cai, X. Cai, A. Calcaterra, G. F. Cao, N. Cao, Selim Çetin, J. F. Chang, T. T. Chang, W. L. Chang, G. R., G. Chelkov, C. Chen, Chao Chen, G. Chen, H. S. Chen, M. L. Chen, S. J. Chen, S. M. Chen, T. Chen, X. R. Chen, X. T. Chen, Y. B. Chen, Y. Q. Chen, Z. J. Chen, W. S. Cheng, S. K. Choi, X. Chu, G. Cibinetto, S. C. Coen, F. Cossio, J. J. Cui, H. L. Dai, J. P. Dai, A. Dbeyssi, R. E. de Boer, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, B. Ding, X. X. Ding, Y. Ding, Y. Ding, J. Dong, L. Y. Dong, M. Y. Dong, Xiang-Kun Dong, S. X. Du, Z. H. Duan, P. Egorov, Y. L. Fan, Jing Fang, S. S. Fang, Wenxing Fang, Y. Fang, R. Farinelli, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, J. H. Feng, K Fischer, M. Fritsch, C. Fritzsch, C. D. Fu, Y. W. Fu, He Gao, Yanqing Gao, Yang Gao, S. Garbolino, I. Garzia, P. T. Ge, Z. W. Ge, C. Geng   +99 more
openalex   +1 more source

Total decay rates of B mesons at NNLO-QCD

Journal of High Energy Physics
We update the Standard Model (SM) predictions for the lifetimes of the B +, B d and B s mesons within the heavy quark expansion (HQE), including the recently determined NNLO-QCD corrections to non-leptonic decays of the free b-quark.
Manuel Egner, Matteo Fael, Alexander Lenz, Maria Laura Piscopo, Aleksey V. Rusov, Kay Schönwald, Matthias Steinhauser   +6 more
doaj   +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