Results 41 to 50 of about 121,350 (241)

Charged and neutral B ¯ u , d , s $$ {\overline{B}}_{u,d,s} $$ → γ form factors from light cone sum rules at NLO

Journal of High Energy Physics, 2021
We present the first analytic O α s $$ \mathcal{O}\left({\alpha}_s\right) $$ -computation at twist-1,2 of the B ¯ u , d , s $$ {\overline{B}}_{u,d,s} $$ → γ form factors within the framework of sum rules on the light-cone. These form factors describe the
Tadeusz Janowski, Ben Pullin, Roman Zwicky   +2 more
doaj   +1 more source

Heavy quark physics in N = 2 QCD [PDF]

Nuclear Physics B - Proceedings Supplements, 1999
3 pages Latex, 3 eps figures. Uses espcrc2.sty and epsf.sty . To appear in the Proceedings of Lattice 98 (Heavy Quarks)
CP-PACS, Collaboration, Aoki, S, Burkhalter, R, Ejiri, S, Fukugita, M, Hashimoto, S, Iwasaki, Y, Kanaya, K, Kaneko, T, Kuramashi, Y, Nagai, K, Okawa, Masanori, Shanahan, H. P., Ukawa, A, Yoshié, T   +14 more
openaire   +4 more sources

B semileptonic decays with 2+1 dynamical quark flavors [PDF]

, 2005
We study semileptonic B decays, using MILC dynamical configurations with $N_f=2+1$. NRQCD heavy and AsqTad light quark actions are used. We obtain the semileptonic form factors $f_+(q^2)$ and $f_0(q^2)$ in the chiral limit.Comment: 6 pages, 3 figures ...
Davies, Christine, Gray, Alan, Gulez, Emel, Lepage, Peter, Shigemitsu, Junko, Wingate, Matthew   +5 more
core   +2 more sources

A Few Aspects of Heavy Quark Expansion [PDF]

, 2000
Two topics in heavy quark expansion are discussed. The heavy quark potential in perturbation theory is reviewed in connection to the problem of the heavy quark mass.
Bjorken J D, Bloch D, Brambilla N, de Fazio F, Morenas V, Nikolai Uraltsev, Nussinov S, Uraltsev N, Uraltsev N, Uraltsev N, Uraltsev N, Uraltsev N, Vainshtein A, Vainshtein A   +13 more
core   +3 more sources

Phenomenological study of heavy hadron lifetimes

Journal of High Energy Physics, 2018
The lifetimes of bottom and charmed hadrons are analyzed within the framework of the heavy quark expansion (HQE). Lifetime differences arise from the spectator effects such as weak W-annihilation and Pauli interference. Spectator effects originating from
Hai-Yang Cheng
doaj   +1 more source

Sizable time-reversal violating effects in bottom baryon decays

Journal of High Energy Physics, 2022
We study time-reversal (T) asymmetries in the charmless two-body decays of antitriplet bottom baryons. We find that in B b → B n P with B b = ( Ξ b − $$ {\Xi}_b^{-} $$ , Ξ b 0 $$ {\Xi}_b^0 $$ , Λ b ) and B n (P) a octet baryon (pseudoscalar meson), the ...
Chia-Wei Liu, Chao-Qiang Geng
doaj   +1 more source

The time-dependent CP asymmetry in B 0 → K resγ → π+π− K s 0 γ $$ {K}_s^0\gamma $$ decays

Journal of High Energy Physics, 2019
The time-dependent CP asymmetry in B 0 → K resγ → π+π− K Sγ is sensitive to the photon polarisation in the quark level process b → sγ. While this polarisation is predominantly left-handed in the standard model, it could be modified by the existence of ...
S. Akar, E. Ben-Haim, J. Hebinger, E. Kou, F.-S. Yu   +4 more
doaj   +1 more source

Overview of Charm Physics at RHIC [PDF]

, 2006
Heavy-quark production provides a sensitive probe of the gluon structure of nucleons and its modication in nuclei. It is also a key probe of the hot-dense matter created in heavy-ion collisions.
Leitch, M. J.
core   +3 more sources

REVIEW OF HEAVY QUARK PHYSICS – THEORY [PDF]

International Journal of Modern Physics A, 2005
Recent progress in the theory of B-meson decays is reviewed with emphasis on the aspects related to the B-factory data.
openaire   +2 more sources

Heavy-light mesons from a flavour-dependent interaction

Physics Letters B
We introduce a new framework for the physics of heavy-light mesons, whose key element is the effective incorporation of flavour-dependent contributions into the corresponding bound-state and quark gap equations.
Fei Gao, Angel S. Miramontes, Joannis Papavassiliou, Jan M. Pawlowski   +3 more
doaj   +1 more source