QCD sum rules analysis of the rate B-c -> X nu(nu)over-bar decays

Download
2008-08-01
Azizi, K.
Khosravi, R.
BASHIRY, VALİ
Taking into account the gluon correction contributions to the correlation function, the form factors relevant to the rate B-c --> X nu(nu) over bar decays are calculated in the frame-work of the three-point QCD sum rules, where X stands for axial vector particle, AV(D-s1), and vector particles, V(D*, D-s*). The total decay width as well as the branching ratio of these decays are evaluated using the q(2) dependent expressions of the form factors. A comparison of our results with the predictions of the relativistic constituent quark model is presented.
EUROPEAN PHYSICAL JOURNAL C

Suggestions

Semileptonic B-s -> D-sJ(2460)l nu decay in QCD
Alıyev, Tahmasıb; Özpineci, Altuğ (Springer Science and Business Media LLC, 2007-08-01)
Using three point QCD sum rule methods, the form factors relevant to semileptonic B-s -> D-sJ(2460)l nu decay are calculated. The q(2) dependences of these form factors are evaluated and compared with the heavy quark effective theory predictions. The dependence of the asymmetry parameter alpha, characterizing the polarization of the D-sJ meson, on q(2) stop is studied. The branching ratio of this decay is also estimated, and it is shown that it can easily be detected at LHC.
CP violation in polarized B -> pi l(+)l(-) and B -> pl(+)l(-) decays
Erkol, G; Wagenaar, JW; Turan, Gürsevil (Springer Science and Business Media LLC, 2005-05-01)
We study the decay rate and the CP violating asymmetry of the exclusive B -> pi l(+)l(-) and B -> rho l(+)l(-) decays in the case where one of the final leptons is polarized. We calculate the contributions coming from the individual polarization states in order to identify a so-called wrong sign decay, which is a decay with a given polarization, whose width and CP asymmetry are smaller as compared to the unpolarized one. The results are presented for electrons and tau leptons. We observe that in particular ...
Form factor for penguin-induced B -> eta transition in light cone QCD sum rule
Alıyev, Tahmasıb; Savcı, Mustafa (Springer Science and Business Media LLC, 2003-08-01)
We calculate the penguin-induced form factor for the B --> etal(+)l(-) decay. This form factor is calculated by light cone QCD sum rules, including contributions from wave functions up to twist-4 as well as mass corrections of the light eta meson.
gamma*N -> Delta(+) (1600) transition form factors in light-cone sum rules
Aliev, T. M.; Barakat, T.; Bilmis, S.; Savcı, Mustafa (American Physical Society (APS), 2020-06-01)
The form factors of gamma*N -> Delta (1600) transition is calculated within the light-cone sum rules assuming that Delta(+) (1600) is the first radial excitation of Delta(1232). The Q(2) dependence of the magnetic dipole (G) over tilde (M) (Q(2)), electric quadrupole (G) over tilde (E) (Q(2)), and Coulomb quadrupole (G) over tilde (c) (Q(2)) form factors are investigated. Moreover, the Q(2) dependence of the ratios R-EM = - (G) over tilde (E)(Q(2))/(G) over tilde (M)(Q(2)) and R-SM = -1/4m Delta(1600)(2) ro...
Radiative B-* meson decays in QCD sum rules
Alıyev, Tahmasıb; Pak, NK (Springer Science and Business Media LLC, 1997-01-01)
The decay constant g(B)* of the B* mesons and the transition amplitudes of the radiative decays B-a* --> B-a gamma are calculated in the frame-work of QCD sum rules. It is shown that the decay rates B* --> B gamma are one order smaller than the corresponding D* meson decays.
Citation Formats
K. Azizi, R. Khosravi, and V. BASHIRY, “QCD sum rules analysis of the rate B-c -> X nu(nu)over-bar decays,” EUROPEAN PHYSICAL JOURNAL C, pp. 357–370, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66905.