Cancellation of Sudakov Logarithms in Radiative Decays of Quarkonia

Details Cancellation of Sudakov Logarithms in Radiative Decays of Quarkonia Cancellation of Sudakov Logarithms in Radiative Decays of Quarkonia

2001-02-27

arxiv.org/abs/hep-ph/0102336v1

Nucl.Phys. B604 (2001) 391-404

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 1 figure

Scientific paper

10.1016/S0550-3213(01)00162-6

We study infrared QCD effects in radiative quarkonia decays. We examine the endpoint region z -> 1 of the photon spectrum. We point out a cancellation mechanism for the corrections in $\alpha_s^n \ln^{m} (1-z)$, $m \leq 2 n$, in the short-distance coefficient for the color-singlet Fock state in the quarkonium. The cancellation is due to the coherence of the color radiation, and applies even though logarithmic contributions are present in the jet distributions associated with the decay. We comment on the implications of our results for the modeling of hadronization in the endpoint region and for the role of color-octet states in the quarkonium.

Affiliated with

Also associated with

No associations

Rating

Cancellation of Sudakov Logarithms in Radiative Decays of Quarkonia 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 Cancellation of Sudakov Logarithms in Radiative Decays of Quarkonia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cancellation of Sudakov Logarithms in Radiative Decays of Quarkonia will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-118794