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Title: Analysis of B(B{yields}X{sub s}{gamma}) at Next-to-Next-to-Leading Order with a Cut on Photon Energy

Abstract

By combining a recent estimate of the total B{yields}X{sub s}{gamma} branching fraction at O({alpha}{sub s}{sup 2}) with a detailed analysis of the effects of a cut E{sub {gamma}}{>=}1.6 GeV on photon energy, a prediction for the partial B{yields}X{sub s}{gamma} branching fraction at next-to-next-to-leading order in renormalization-group improved perturbation theory is obtained, in which contributions from all relevant scales are factorized. The result B(B{yields}X{sub s}{gamma})=(2.98{+-}0.26)x10{sup -4} is about 1.4{sigma} lower than the experimental world average. This opens a window for significant new physics contributions in rare radiative B decays.

Authors:
 [1];  [2];  [3]
  1. Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)
  2. Institute for High-Energy Phenomenology, Laboratory for Elementary-Particle Physics, Cornell University, Ithaca, New York 14853 (United States)
  3. (ThEP), Johannes Gutenberg-Universitaet, D-55099 Mainz (Germany)
Publication Date:
OSTI Identifier:
20861594
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 98; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevLett.98.022003; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B MESONS; BRANCHING RATIO; ENERGY ANALYSIS; GEV RANGE 01-10; PARTICLE DECAY; PERTURBATION THEORY; PHOTONS; RENORMALIZATION

Citation Formats

Becher, Thomas, Neubert, Matthias, and Institut fuer Physik. Analysis of B(B{yields}X{sub s}{gamma}) at Next-to-Next-to-Leading Order with a Cut on Photon Energy. United States: N. p., 2007. Web. doi:10.1103/PHYSREVLETT.98.022003.
Becher, Thomas, Neubert, Matthias, & Institut fuer Physik. Analysis of B(B{yields}X{sub s}{gamma}) at Next-to-Next-to-Leading Order with a Cut on Photon Energy. United States. doi:10.1103/PHYSREVLETT.98.022003.
Becher, Thomas, Neubert, Matthias, and Institut fuer Physik. Fri . "Analysis of B(B{yields}X{sub s}{gamma}) at Next-to-Next-to-Leading Order with a Cut on Photon Energy". United States. doi:10.1103/PHYSREVLETT.98.022003.
@article{osti_20861594,
title = {Analysis of B(B{yields}X{sub s}{gamma}) at Next-to-Next-to-Leading Order with a Cut on Photon Energy},
author = {Becher, Thomas and Neubert, Matthias and Institut fuer Physik},
abstractNote = {By combining a recent estimate of the total B{yields}X{sub s}{gamma} branching fraction at O({alpha}{sub s}{sup 2}) with a detailed analysis of the effects of a cut E{sub {gamma}}{>=}1.6 GeV on photon energy, a prediction for the partial B{yields}X{sub s}{gamma} branching fraction at next-to-next-to-leading order in renormalization-group improved perturbation theory is obtained, in which contributions from all relevant scales are factorized. The result B(B{yields}X{sub s}{gamma})=(2.98{+-}0.26)x10{sup -4} is about 1.4{sigma} lower than the experimental world average. This opens a window for significant new physics contributions in rare radiative B decays.},
doi = {10.1103/PHYSREVLETT.98.022003},
journal = {Physical Review Letters},
number = 2,
volume = 98,
place = {United States},
year = {Fri Jan 12 00:00:00 EST 2007},
month = {Fri Jan 12 00:00:00 EST 2007}
}
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