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https://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: | https://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 | |
|---|---|---|---|---|
| 577738.pdf | 811.42 kB | Adobe PDF | View/Open |
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