ar X iv : h ep - p h / 03 02 13 2 v 1 1 7 Fe b 20 03 2 - loop QCD corrections to B c - meson leptonic constant .

ar X iv : h ep - p h / 03 02 13 2 v 3 2 2 Ja n 20 07 2 - loop QCD corrections to B c - meson leptonic constant .

We present results for two-loop QCD corrections to the short distance coefficient that governs leptonic decay of Bc-meson. After brief discussion of the technics of asymptotic expansion used to perform this calculation, we give comments on the numerical value of two-loop corrections and its impact on NRQCD description of Bc-meson bound state. PACS: 12.39.Jh, 13.25.Gv, 14.40.Lb, 14.40.Nd

ar X iv : h ep - p h / 03 02 12 9 v 1 1 7 Fe b 20 03 Scalar σ meson effects in radiative ρ 0 - meson decays

ar X iv : h ep - p h / 05 04 10 7 v 1 1 4 A pr 2 00 5 On the B c leptonic decay constant Sameer

We give a review and present a comprehensive calculations for the leptonic constant fBcof the low-lying pseudoscalar and vector states of Bc-meson in the framework of static and QCD-motivated nonrelativistic potential models taking into account the one-loop and two-loop QCD corrections in the short distance coefficient that governs the leptonic constant of Bc quarkonium system. Further, we use ...

ar X iv : h ep - p h / 03 02 18 5 v 1 2 0 Fe b 20 03 Nonlinear corrections to the DGLAP equations ; looking for the saturation limits ∗

The effects of the first nonlinear corrections to the DGLAP equations are studied in light of the HERA data. Saturation limits are determined in the DGLAP+GLRMQ approach for the free proton and for the Pb nucleus.

ar X iv : h ep - p h / 03 02 22 4 v 1 2 5 Fe b 20 03 Budker INP 2003 - 13 RADIATIVE CORRECTIONS TO QCD AMPLITUDES IN QUASI - MULTI - REGGE KINEMATICS

Radiative corrections to QCD amplitudes in the quasi-multi-Regge kinematics are interesting in particular since the Reggeized form of these amplitudes is used in the derivation of the NLO BFKL. This form is a hypothesis which must be at least carefully checked, if not proved. We calculate the radiative corrections in the one-loop approximation using the s-channel unitarity. Compatibility of the...