Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131639
Title: | Measurement of the γγ*→π0 transition form factor |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 11-Sep-2009 |
Publisher: | American Physical Society |
Abstract: | We study the reaction e + e − → e + e − π 0 in the single tag mode and measure the differential cross section d σ / d Q 2 and the γ γ ∗ → π 0 transition form factor in the momentum transfer range from 4 to 40 GeV 2 . At Q 2 > 10 GeV 2 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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.80.052002 |
It is part of: | Physical Review D, 2009, vol. 80, num. 5, p. 052002 |
URI: | http://hdl.handle.net/2445/131639 |
Related resource: | https://doi.org/10.1103/PhysRevD.80.052002 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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577738.pdf | 811.42 kB | Adobe PDF | View/Open |
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