Comment on Resummation of Mass Distribution for Jets Initiated by Massive Quarks

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We compute in the heavy quark effective theory the soft coefficient D_2 entering the resummation of next-to-next-to-leading threshold logarithms for jets initiated by a quark with a small mass compared to the hard scale of the process. We find complete agreement with a previous computation in full QCD. Contrary to our previous guess, this coefficient turns out to be different from that one entering heavy flavor decay or heavy flavor fragmentation.
5 pages, no figures; minor changes, references added, version accepted in Phys.Lett. B

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/216031

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0804.3922
 http://arxiv.org/abs/0804.3922
 Phys.Lett.B670:367-368,2009
 doi:10.1016/j.physletb.2008.11.006

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arXiv