TTP00-27 Light-Cone Distribution Functions for $B$ Decays at subleading Order in $1/m_b$

TTP00-27 Light-Cone Distribution Functions for $B$ Decays at subleading Order in $1/m_b$

TTP00-27 Light-Cone Distribution Functions for $B$ Decays at subleading Order in $1/m_b$

We construct the higher twist structure functions that describe inclusive b hadron decays in regions of phase space where the hadronic decay products carry high energy but have low invariant mass. We show that, for B meson decays, there are four new non-vanishing matrix elements of non-local operators. We show that to subleading twist these decays are parametrized in terms of four functions. We compute the tree-level matching for a general heavy-to-light current and apply it to B → X_s gamma. Using a simple model for these functions we estimate the subleading twist contributions to this decay.

Christian Bauer, Michael Luke, Thomas Mannel
Phys.Rev. D68 094001 2003
PDF PostScript arXiv
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