B → K(∗)μ+μ− in covariant quark model
نویسندگان
چکیده
منابع مشابه
Nucleons in the Covariant Quark–diquark Model
We introduce diquarks as separable correlations in the two–quark Green’s function to facilitate the description of baryons as relativistic three– quark bound states. These states then emerge as solutions of Bethe– Salpeter equations for quarks and diquarks that interact via quark exchange. Approximating quark and diquark propagators by the corresponding free ones, we calculate nucleon static pr...
متن کاملCovariant oscillator quark model for baryons
An analytic resolution of the covariant oscillator quark model for baryons is presented. Our harmonic potential is a general quadratic potential which can simulate both a ∆-shaped configuration or a simplified Y configuration where the junction is located at the centre of mass. The addition of new terms simulating the one gluon exchange process and the quark self-energy is discussed, and a comp...
متن کاملCovariant model for dynamical quark confinement
Based on a recent manifestly covariant time-ordered approach to the relativistic many-body problem, the quark propagator is defined by a nonlinear Dyson–Schwinger-type integral equation, with a one-gluon loop. The resulting energy-dependent quark mass is such that the propagator is singularity-free for real energies, thus ensuring confinement. The self-energy integral converges without regulari...
متن کاملSpectra of Exclusive Semi-Leptonic Decays of B-meson in the Covariant Oscillator Quark Model
The spectra and form factors of exclusive semi-leptonic decays of B-meson are analyzed, taking account of confined effects of quarks by the Covariant Oscillator Quark Model. The predicted B → (D,D)lν̄l spectra with the conventional value of Vcb are fit well to the highprecision experiment. It is also shown the values of Vcb and Vub obtained through decay widths for the B → (D,D, ρ)lν̄l processes ...
متن کاملBaryons in a Covariant and Confining Diquark–Quark Model
In a covariant model where constituent quarks and diquarks interact through quark exchange, the Bethe-Salpeter equation in ladder approximation for octet and decuplet baryons is solved. Quark and diquark confinement is thereby effectively parametrised by choosing appropriately modified propagators. Numerical results for the baryon masses are presented. In a second step electromagnetic, weak and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Modern Physics: Conference Series
سال: 2015
ISSN: 2010-1945,2010-1945
DOI: 10.1142/s2010194515601131