The B -> X_s gamma Photon Spectrum
High Energy Physics - Phenomenology
2011-05-05 v1
Abstract
The photon energy spectrum in inclusive weak radiative B -> X_s gamma decay is computed to order alpha_s^2 beta_0. This result is used to extract a value for the HQET parameter from the average <1-2E_\gamma/m_B>, and a value of the parameter from <(1-2E_\gamma/m_B)^2>. An accurate measurement of <1-2E_\gamma/m_B> can determine the size of the nonperturbative contributions to the Upsilon(1S) mass which cannot be absorbed into the b quark pole mass.
Cite
@article{arxiv.hep-ph/9903305,
title = {The B -> X_s gamma Photon Spectrum},
author = {Zoltan Ligeti and Michael Luke and Aneesh V. Manohar and Mark B. Wise},
journal= {arXiv preprint arXiv:hep-ph/9903305},
year = {2011}
}
Comments
16 pages, RevTeX