Heavy-to-heavy quark decays at NNLO

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dc.creatorPak, Alexey
dc.creatorCzarnecki, Andrzej
dc.date2008-08-26
dc.date.accessioned2026-07-07T12:22:29Z
dc.date.available2026-07-07T12:22:29Z
dc.descriptionDetails of a recent calculation of O(alpha_s^2) corrections to the decay b -> c,l,nu_l, taking into account the c-quark mass, are described. Construction of the expansion in the mass ratio m_c/m_b as well as the evaluation of new four-loop master integrals are presented. The same techniques are applicable to the muon decay, mu -> e,nu_mu,anti-nu_e. Analytical results are presented, for the physical cases as well as for a model with purely-vector couplings.
dc.description11 pages
dc.identifierhttps://arxiv.org/abs/0808.3509
dc.identifierhttp://arxiv.org/abs/0808.3509
dc.identifierPhys.Rev.D78:114015,2008
dc.identifierdoi:10.1103/PhysRevD.78.114015
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/213669
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHeavy-to-heavy quark decays at NNLO
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