Measurement of the YY*--> pi 0 transition form factor
Name
Aubert-2009-Measurement of the g.pdf
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Author(s)
Dujmic, Denis
Henderson, Shawn Wesley
Sciolla, Gabriella
Yamamoto, R. K.
Zhao, M.
Fisher, Peter H
Cowan, Ray F
Spitznagel, Michael A
Alternative Title
Measurement of the γγ*→π0 transition form factor
Date Issued
September 2009
Journal
Physical Review D
Publisher
American Physical Society
Citation
BABAR Collaboration. "Measurement of the YY*--> pi 0 transition form factor." Phys. Rev. D 80, 052002 (2009)© 2009 The American Physical Society
Version
Final published version
Abstract
We study the reaction e[superscript +]e[superscript -]→e[superscript +]e [superscript -]π[superscript 0] in the single tag mode and measure the differential cross section dσ/dQ[superscript 2] and the γγ[superscript *]→π[superscript 0] transition form factor in the momentum transfer range from 4 to 40 GeV[superscript 2]. At Q[superscript 2]>10 GeV[superscript 2] the measured form factor exceeds the asymptotic limit predicted by perturbative QCD. The analysis is based on 442 fb[superscript -1] of integrated luminosity collected at PEP-II with the BABAR detector at e[superscript +]e[superscript -] center-of-mass energies near 10.6 GeV.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.80.052002
