Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-12-29
Phys.Rev.D69:074015,2004
Physics
High Energy Physics
High Energy Physics - Phenomenology
26 pages, 7 figures
Scientific paper
10.1103/PhysRevD.69.074015
We study the O(Lambda/mb) corrections to the singly and doubly differential hadronic invariant mass spectra d\Gamma/dsH and d\Gamma/dsH dq^2 in b -> u decays, and discuss the implications for the extraction of the CKM matrix element |Vub|. Using simple models for the subleading shape functions, the effects of subleading operators are estimated to be at thefew percent level for experimentally relevant cuts. The subleading corrections proportional to the leading shape function are larger, but largely cancel in the relation between the hadronic invariant mass spectrum and the photon spectrum in B -> X_s \gamma. We also discuss the applicability of the usual prescription of convoluting the partonic level rate with the leading light-cone wavefunction of the b quark to subleading order.
Burrell Craig N.
Luke Michael E.
Williamson Alexander R.
No associations
LandOfFree
Subleading shape function contributions to the hadronic invariant mass spectrum in B -> X_u l νdecay does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Subleading shape function contributions to the hadronic invariant mass spectrum in B -> X_u l νdecay, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Subleading shape function contributions to the hadronic invariant mass spectrum in B -> X_u l νdecay will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-717698