arXiv:0804.3922·v2·High Energy Physics — Phenomenology
Comment on Resummation of Mass Distribution for Jets Initiated by Massive Quarks
Ugo Aglietti (Rome U. & INFN, Rome)🇮🇹 · Leonardo Di Giustino (Parma U. & INFN, Parma)🇮🇹 · Giancarlo Ferrera (Florence U. & INFN, Florence)🇮🇹 · Luca Trentadue (Parma U. & INFN, Parma)🇮🇹
Abstract
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.
Comments: 5 pages, no figures; minor changes, references added, version accepted in Phys.Lett. B