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Measurement of the γγ*→π0 transition form factor

Aubert, B. et al. (2009) Measurement of the γγ*→π0 transition form factor. Physical Review D, 80 (5). 052002. ISSN 1550-7998

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Abstract

We study the reaction e+e-→e+e-π0 in the single tag mode and measure the differential cross section dσ/dQ2 and the γγ*→π0 transition form factor in the momentum transfer range from 4 to 40 GeV2. At Q2>10 GeV2 the measured form factor exceeds the asymptotic limit predicted by perturbative QCD. The analysis is based on 442 fb-1 of integrated luminosity collected at PEP-II with the BABAR detector at e+e- center-of-mass energies near 10.6 GeV.

Item Type: Article
Subjects: Q Science > QC Physics
Schools: School of Applied Sciences
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Depositing User: Sharon Beastall
Date Deposited: 05 Jan 2012 10:47
Last Modified: 05 Jan 2012 10:47
URI: http://eprints.hud.ac.uk/id/eprint/12346

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