Results 31 to 40 of about 121,798 (207)

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

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

Working Group Report: Heavy-Ion Physics and Quark-Gluon Plasma [PDF]

, 2006
This is the report of Heavy Ion Physics and Quark-Gluon Plasma at WHEPP-09 which was part of Working Group-4. Discussion and work on some aspects of Quark-Gluon Plasma believed to have created in heavy-ion collisions and in early universe are reported ...
A Buchel, A Capella, A K Dutt-Mazumder, A Nakamura, A P Kostyuk, AM Srivastava, AP Mishra, B Alessandro, B Alessandro, B B Back, B G Zakharov, B Mohanty, B Rai, C A Salgado, C A Salgado, C Adler, C Adler, C R Allton, C Ratti, D Teaney, DK Srivastava, E Braaten, E Laermann, E V Shuryak, E V Shuryak, E V Shuryak, E Wang, E Witten, F Karsch, F Karsch, G Borges, G D Moore, G Policastro, G Policastro, GC Mishra, H Hees van, H Hees van, H Mishra, H Satz, J Adams, J Adams, J Bowers, J Liao, J M Maldacena, J Nayak, J-Y Ollitrault, JG Contreras, K Adcox, K Adcox, L D McLerran, L Kluberg, L Ramello, M Alford, M C Abreu, M G Mustafa, M G Mustafa, M G Mustafa, M Gyulassy, M Gyulassy, M Gyulassy, M Gyulassy, M H Thoma, Munshi G Mustafa, N Borghini, P F Kolb, P Jaikumar, P N Meisinger, PK Sahu, R Baier, R Baier, R J Fries, R Rapp, R Ray, R S Bhalerao, R V Gavai, RS Bhalerao, RV Gavai, S A Bass, S C Phatak, S Datta, S Ejiri, S K Ghosh, S K Ghosh, S S Adler, S S Adler, S S Adler, S S Adler, S S Gubser, S S Gubser, SC Phatak, SK Ghosh, Sudhir Raniwala, T Awes, VK Tiwari, X-N Wang, X-N Wang, X-N Wang   +96 more
core   +2 more sources

Heavy quark physics on the lattice [PDF]

Nuclear Physics B - Proceedings Supplements, 2001
I review the current status of lattice calculations of the properties of bound states containing one or more heavy quarks. Many of my remarks focus on the heavy-light leptonic decay constants, such as $f_B$, for which the systematic errors have by now been quite well studied. I also discuss $B$-parameters, semileptonic form factors, and the heavy-light
openaire   +2 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

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

Quenched charmonium spectrum on anisotropic lattices [PDF]

, 2000
We present the results of quenched charmonium spectrum for S- and P-states, obtained by a relativistic heavy quark method on anisotropic lattices. Simulations are carried out using the standard plaquette gauge action and a meanfield-improved clover quark
A. Ali Khan, A. Ukawa, El-Khadra, H.P. Shanahan, K. Kanaya, K.-I. Nagai, Klassen, Klassen, M. Fukugita, M. Okamoto, M. Okawa, N. Ishizuka, R. Burkhalter, S. Aoki, S. Ejiri, S. Hashimoto, T. Kaneko, T. Yoshié, Y. Iwasaki, Y. Kuramashi, Y. Taniguchi   +20 more
core   +2 more sources

Quark Nuclear Physics with Heavy Quarks

, 2022
Heavy quarks have been instrumental for progress in our exploration of strong interactions. Quarkonium in particular, a heavy quark-antiquark nonrelativistic bound state, has been at the root of several revolutions. Quarkonium is endowed with a pattern of separated energy scales qualifying it as special probe of complex environments.
openaire   +2 more sources