Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-10-26
JHEP0601:067,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
19 pages, 5 figures, typos eliminated, text imporved
Scientific paper
10.1088/1126-6708/2006/01/067
With a consistent definition of transverse-momentum-dependent(TMD) light-cone wave function of $B$-meson, we show that the amplitude of the radiative leptonic B-decay can be factorized at one-loop level as a convolution with the wave function and a perturbative coefficient function, combined with a soft factor. In this TMD factorization, the transverse momenta of partons in the $B$-meson are taken into account and all soft divergences are contained in the wave function and the soft factor. The coefficient function is infrared-safe. The factorization works on a diagram-by-diagram basis and is possible to extend beyond one loop. With the factorization the large logarithms in the perturbative function can be simply resummed. Our work shows that the result of collinear factorization for the decay can be derived from that of TMD factorization. Therefore, the two factorizations for the case here are simply related to each other.
Ma Jian-Ping
Wang Qiangguo
No associations
LandOfFree
Transverse Momentum Dependent Factorization for Radiative Leptonic Decay of B-Meson does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Transverse Momentum Dependent Factorization for Radiative Leptonic Decay of B-Meson, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transverse Momentum Dependent Factorization for Radiative Leptonic Decay of B-Meson will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-555081