Results 51 to 60 of about 117,601 (193)

Four-quark Operators Relevant to B Meson Lifetimes from QCD Sum Rules [PDF]

, 1997
At the order of 1/m_b^3, the B meson lifetimes are controlled by the hadronic matrix elements of some four-quark operators. The nonfactorizable magnitudes of these four-quark operator matrix elements are analyzed by QCD sum rules in the framework of ...
A. V. Radyushkin, B. Blok, B. Blok, B. Guberina, B. Guberina, B. L. Ioffe, B. L. Ioffe, Chun Liu, E. Bagan, G. Altarelli, G. Bellini, H. D. Politzer, H. D. Politzer, H. J. Lipkin, H. S. Song, H. Y. Cheng, I. Bigi, I. Bigi, I. I. Bigi, I. I. Bigi, I. I. Bigi, I. I. Bigi, I. I. Bigi, I. I. Bigi, J. L. Rosner, Jungil Lee, M. A. Shifman, M. A. Shifman, M. A. Shifman, M. A. Shifman, M. Neubert, M. Neubert, M. Neubert, M. Neubert, M. S. Baek, N. B. Uraltsev, N. Bilic, P. Colangelo, Shifman, T. M. Aliev, V. A. Novikov, V. A. Novikov, V. Chernyak, Y. Chung   +43 more
core   +4 more sources

Meson scattering in a non-minimally Lorentz-violating scalar QED at finite temperature

European Physical Journal C: Particles and Fields
In this paper we study meson scattering in a non-minimally Lorentz-violating scalar QED at finite temperature. The meson scatterings were investigated in tree level and the finite temperature effects were addressed by using the thermofield dynamics ...
M. C. Araújo, R. V. Maluf, J. Furtado
doaj   +1 more source

QED corrections to isospin-related decay rates of charged and neutral B mesons

, 2004
We estimate the isospin-violating QED radiative corrections to the charged-to-neutral ratios of the decay rates for B^+ and B^0 in non-leptonic B meson decays.
Atwood D., Hastings N. C., Sakurai J. J., SOO-HYEON NAM, Voloshin M. B., Voloshin M. B.   +5 more
core   +1 more source

A High Statistics Lattice Calculation of The B-meson Binding Energy [PDF]

, 1996
We present a high statistics lattice calculation of the B--meson binding energy $\overline{\Lambda}$ of the heavy--quark inside the pseudoscalar B--meson. Our numerical results have been obtained from several independent numerical simulations at $\beta=6.
Allton, Allton, Allton, Ball, Beneke, Bernard, Bernard, Bigi, C.T. Sachrajda, Crisafulli, Di Renzo, Eichten, G. Martinelli, Giménez, Gray, Gremm, Heatlie, Heatlie, Maiani, Marenzoni, Marenzoni, Martinelli, Martinelli, Sheikholeslami, V. Giménez   +24 more
core   +3 more sources

Heavy hadrons spectra on lattice using NRQCD

EPJ Web of Conferences, 2018
Comparison of radial excitation energies to masses show that the velocity of b quark is very non-relativistic in bottomonium states. In a mixed system like charmed B meson, the b quark has less velocity than it has in bottomonium states and in strange B ...
Mohanta Protick, Basak Subhasish
doaj   +1 more source

Exotic molecular meson states of $$B^{(*)} K^{(*)}$$ B ( ∗ ) K ( ∗ ) nature

European Physical Journal C: Particles and Fields, 2022
We evaluate theoretically the interaction of the open bottom and strange systems $${{\bar{B}}}{{\bar{K}}}$$ B ¯ K ¯ , $${{\bar{B}}^*}{{\bar{K}}}$$ B ¯ ∗ K ¯ , $${{\bar{B}}}{{\bar{K}}^*}$$ B ¯ K ¯ ∗ and $${{\bar{B}}^*}{{\bar{K}}^*}$$ B ¯ ∗ K ¯ ∗ to look ...
E. Oset, L. Roca
doaj   +1 more source

Investigation of background subtraction techniques for high mass dilepton physics

, 2001
The signals in high mass dilepton spectroscopy with nucleus-nucleus collisions at collider energies are superimposed on a generally large combinatorial background.
Abreu, Abreu, Angelis, Braun-Munzinger, Braun-Munzinger, Gavai, Gaździcki, Geiger, Groom, Gunion, Kämpfer, L'Hote, Lin, Matsui, P. Braun-Munzinger, P. Crochet, Pelte, Peterson, Shuryak, Thews, Vogt, Vogt   +21 more
core   +2 more sources

A model independent and rephase invariant parametrization of CP violation [PDF]

, 1998
The phenomenological description of the neutral B meson system is proposed in terms of the fundamental CP-violating observables and within a rephasing invariant formalism.
Acuto A., Aronson S. H., D. COCOLICCHIO, Dass G. V., Hayakawa M., Kramer G., Lavoura L., Lipkin H. J., M. VIGGIANO, Simonius M., Tanimoto M., Wanninger M.   +11 more
core   +2 more sources

Inverse moment of the B s -meson distribution amplitude from QCD sum rule

Journal of High Energy Physics, 2020
We derive a QCD sum rule for the inverse moment of the B s -meson light-cone distribution amplitude in HQET. Within this method, the SU(3) f l symmetry violation is traced to the strange quark mass and to the difference between strange and nonstrange ...
Alexander Khodjamirian, Rusa Mandal, Thomas Mannel   +2 more
doaj   +1 more source

Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes

, 2007
New sum rules for $B\to \pi,K $ and $B\to \rho,K^*$ form factors are derived from the correlation functions expanded near the light-cone in terms of B-meson distribution amplitudes.
Alexander Khodjamirian, B. O. Lange, Nils Offen, Thomas Mannel   +3 more
core   +1 more source