Data di Pubblicazione:
2006
Citazione:
Threshold resummed spectra in B ---> X(u) l nu decays in NLO. I / U. Aglietti, G. Ferrera, G. Ricciardi. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 74:3(2006), pp. 034004.034004.1-034004.034004.24. [10.1103/PhysRevD.74.034004]
Abstract:
We evaluate threshold resummed spectra in B→Xulν decays in next-to-leading order. We present results for the distribution in the hadronic variables EX and mX2/EX2, for the distribution in EX and for the distribution in EX and El, where EX and mX are the total energy and the invariant mass of the final hadronic state Xu respectively and El is the energy of the charged lepton. We explicitly show that all these spectra (where there is no integration over the hadronic energy) can be directly related to the photon spectrum in B→Xsγ via short-distance coefficient functions.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
U. Aglietti, G. Ferrera, G. Ricciardi
Link alla scheda completa:
Link al Full Text: