Results 31 to 40 of about 119,596 (245)

Improved nonrelativistic QCD for heavy-quark physics [PDF]

Physical Review D, 1992
40 pages, 2 figures (not included), in ...
LEPAGE G. P, HORNBOSTEL K, MAGNEA, Lorenzo, MAGNEA, Lena Ulrika, NAKHLEH C.   +4 more
openaire   +4 more sources

Towards B ¯ → X s γ $$ \overline{B}\to {X}_s\gamma $$ at the NNLO in QCD without interpolation in m c

Journal of High Energy Physics, 2020
Strengthening constraints on new physics from the B ¯ → X s γ $$ \overline{B}\to {X}_s\gamma $$ branching ratio requires improving accuracy in the measurements and the Standard Model predictions.
Miko-laj Misiak, Abdur Rehman, Matthias Steinhauser   +2 more
doaj   +1 more source

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

Classical gluon production amplitude in heavy-ion collisions

EPJ Web of Conferences, 2016
The initial condition for the formation of the Quark-Gluon Plasma, the distribution of quarks and gluons produced in the initial stages of nuclear collisions, is the fundamental building block of heavy-ion theory.
Chirilli Giovanni Antonio
doaj   +1 more source

LHCb Overview [PDF]

EPJ Web of Conferences
The LHCb experiment has a complete heavy ion physics program, including studies of pp, pA, AA, and UPC events delivered by the Large Hadron Collider, along with a rapidly expanding fixed-target capability. With unique acceptance and detector capabilities,
Durham J. Matthew
doaj   +1 more source

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

|Vub| determination and testing of lepton flavour universality in semileptonic Bc → D(∗) decays

Journal of High Energy Physics, 2020
In light of prospects for measurements of B c  → D (∗) lv decays in the upcoming Upgrade II of the LHC, we show that by using calculated B c  → D (∗) form factors a competitive extraction of the |V ub | CKM matrix element from the B c → Dμ v ¯ μ $$ {B}_c\
Domagoj Leljak, Blaženka Melić
doaj   +1 more source

Heavy-quark binding and kinetic energies in heavy-light mesons and the constituent quark model [PDF]

, 1997
The spin-averaged binding energy and the hyperfine mass splitting of heavy-light mesons are investigated within the constituent quark model as a function of the inverse heavy-quark mass. It is shown that the so-called heavy-quark kinetic energy, -lambda1
Bagan, Bagan, Ball, Bigi, Bigi, Bigi, Brambilla, Brambilla, Cardarelli, Cardarelli, Cardarelli, Chernyak, Davoudiasl, De Fazio, Eletsky, Falk, Giménez, Giménez, Godfrey, Grach, Gremm, Gremm, Hwang, Hwang, Isgur, Isgur, Isgur, Kapustin, Lucha, Neubert, Neubert, Neubert, Scora, Silvano Simula, Simula   +34 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

Probing the ∆U = 0 rule in three body charm decays

Journal of High Energy Physics, 2021
CP violation in charm decay was observed in the decays D 0 → P ± P ∓ of a D 0 meson to two pseudoscalars. When interpreted within the SM, the results imply that the ratio of the relevant rescattering amplitudes has a magnitude and phase that are both of ...
Avital Dery, Yuval Grossman, Stefan Schacht, Abner Soffer   +3 more
doaj   +1 more source