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Title: Toward a NNLO calculation of the anti-B ---> X(s) gamma 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{sup 2},{mu}) of soft-collinear effective theory is presented, including non-logarithmic terms. Combined with our previous calculation of the soft function S({omega},{mu}), this result provides the basis for a calculation of the effect of a photon-energy cut in the measurement of the {bar B} {yields} X{sub s}{gamma} 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:
; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
892345
Report Number(s):
FERMILAB-PUB-06-057-T
Journal ID: ISSN 0370-2693; PYLBAJ; arXiv eprint number hep-ph/0603140; TRN: US0701276
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Journal Article
Resource Relation:
Journal Name: Phys.Lett.B637:251-259,2006; Journal Volume: 637
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, /Fermilab, Neubert, Matthias, and /Cornell U., CIHEP. Toward a NNLO calculation of the anti-B ---> X(s) gamma 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, /Fermilab, Neubert, Matthias, & /Cornell U., CIHEP. Toward a NNLO calculation of the anti-B ---> X(s) gamma 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, /Fermilab, Neubert, Matthias, and /Cornell U., CIHEP. Wed . "Toward a NNLO calculation of the anti-B ---> X(s) gamma 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 anti-B ---> X(s) gamma decay rate with a cut on photon energy. II. Two-loop result for the jet function},
author = {Becher, Thomas and /Fermilab and Neubert, Matthias and /Cornell U., CIHEP},
abstractNote = {The complete two-loop expression for the jet function J(p{sup 2},{mu}) of soft-collinear effective theory is presented, including non-logarithmic terms. Combined with our previous calculation of the soft function S({omega},{mu}), this result provides the basis for a calculation of the effect of a photon-energy cut in the measurement of the {bar B} {yields} X{sub s}{gamma} 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 = {Phys.Lett.B637:251-259,2006},
number = ,
volume = 637,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2006},
month = {Wed Mar 01 00:00:00 EST 2006}
}