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Title: Toward a NNLO calculation of the B ¯ X s γ decay rate with a cut on photon energy: II. Two-loop result for the jet function

Abstract

The complete two-loop expression for the jet function J(p 2,μ) of soft-collinear effective theory is presented, including non-logarithmic terms. Combined with our previous calculation of the soft function S(ω,μ), this result provides the basis for a calculation of the effect of a photon-energy cut in the measurement of the B ¯ X s γ decay rate at next-to-next-to-leading order in renormalization-group improved perturbation theory. The jet function is also relevant to the resummation of Sudakov logarithms in other hard QCD processes.

Authors:
 [1];  [2]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Cornell Univ., Ithaca, NY (United States)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
892345
Report Number(s):
hep-ph/0603140; CLNS-06-1954; FERMILAB-PUB-06-057-T
Journal ID: ISSN 0370-2693; 712741; TRN: US0701276
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 637; Journal Issue: 4-5; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; DECAY; GAMMA DECAY; PERTURBATION THEORY; PHOTONS; QUANTUM CHROMODYNAMICS; Phenomenology-HEP

Citation Formats

Becher, Thomas, and Neubert, Matthias. Toward a NNLO calculation of the B¯→Xsγ decay rate with a cut on photon energy: II. Two-loop result for the jet function. United States: N. p., 2006. Web. doi:10.1016/j.physletb.2006.04.046.
Becher, Thomas, & Neubert, Matthias. Toward a NNLO calculation of the B¯→Xsγ decay rate with a cut on photon energy: II. Two-loop result for the jet function. United States. doi:10.1016/j.physletb.2006.04.046.
Becher, Thomas, and Neubert, Matthias. Wed . "Toward a NNLO calculation of the B¯→Xsγ decay rate with a cut on photon energy: II. Two-loop result for the jet function". United States. doi:10.1016/j.physletb.2006.04.046. https://www.osti.gov/servlets/purl/892345.
@article{osti_892345,
title = {Toward a NNLO calculation of the B¯→Xsγ decay rate with a cut on photon energy: II. Two-loop result for the jet function},
author = {Becher, Thomas and Neubert, Matthias},
abstractNote = {The complete two-loop expression for the jet function J(p2,μ) of soft-collinear effective theory is presented, including non-logarithmic terms. Combined with our previous calculation of the soft function S(ω,μ), this result provides the basis for a calculation of the effect of a photon-energy cut in the measurement of the B¯→Xsγ decay rate at next-to-next-to-leading order in renormalization-group improved perturbation theory. The jet function is also relevant to the resummation of Sudakov logarithms in other hard QCD processes.},
doi = {10.1016/j.physletb.2006.04.046},
journal = {Physics Letters. Section B},
number = 4-5,
volume = 637,
place = {United States},
year = {2006},
month = {5}
}

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