Threshold resummed spectra in B -> Xu l nu decays in NLO (II)

Details Threshold resummed spectra in B -> Xu l nu decays in NLO (II) Threshold resummed spectra in B -> Xu l nu decays in NLO (II)

2005-09-10

arxiv.org/abs/hep-ph/0509095v1

Phys.Rev.D74:034005,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, no figures

Scientific paper

10.1103/PhysRevD.74.034005

We resum to next-to-leading order the distribution in the ratio of the invariant hadron mass mX to the total hadron energy EX and the distribution in mX in the semileptonic decays B -> Xu l nu. By expanding our formulas, we obtain the coefficients of all the infrared logarithms at O(alphaS^2) and of the leading ones at O(alphaS^3). We explicitly show that the relation between these semileptonic spectra and the photon spectrum in the radiative decay B -> Xs gamma is not a purely short-distance one. There are long-distance effects in the semileptonic spectra which are not completely factorized by the structure function as measured in the radiative decay and have to be modelled in some way.

Affiliated with

Also associated with

No associations

Rating

Threshold resummed spectra in B -> Xu l nu decays in NLO (II) 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 Threshold resummed spectra in B -> Xu l nu decays in NLO (II), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Threshold resummed spectra in B -> Xu l nu decays in NLO (II) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-395187