Massive c-quark contributions to semileptonic b-quark decay near threshold

Details Massive c-quark contributions to semileptonic b-quark decay near threshold Massive c-quark contributions to semileptonic b-quark decay near threshold

2006-11-03

arxiv.org/abs/hep-ph/0611047v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

The decay width of b to c,c,c,l,nu has been computed as an expansion in limit
(1- 3*(m_c/m_b)) << 1 with zero lepton invariant mass. Considering O(alpha_s^2)
corrections to b to c,l,nu with zero invariant lepton mass, inclusion of our
result is shown to rectify the disagreement between the expansions around
(1-(m_c/m_b)) << 1 and m_c/m_b << 1 at smaller values.

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