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http://hdl.handle.net/2445/124809| Title: | Measurement of the gamma gamma* --> eta_c transition form factor |
| Author: | Graugés Pous, Eugeni Garra Ticó, Jordi BABAR Collaboration |
| Keywords: | Hadrons Mesons (Física nuclear) Hadrons Mesons (Nuclear physics) |
| Issue Date: | 2010 |
| Publisher: | American Physical Society |
| Abstract: | We study the reaction e+e- --> e+e- eta_c, eta_c --> K_S K+- pi-+ and obtain eta_c mass and width values 2982.2+-0.4+-1.6 MeV/c^2 and 31.7+-1.2+-0.8 MeV, respectively. We find Gamma(eta_c --> gamma gamma)B(eta_c --> K anti-K pi)=0.374+-0.009+-0.031 keV, and measure the gamma gamma* --> eta_c transition form factor in the momentum transfer range from 2 to 50 GeV^2. The analysis is based on 469 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.81.052010 |
| It is part of: | Physical Review D, 2010, vol. 81, p. 052010 |
| URI: | http://hdl.handle.net/2445/124809 |
| Related resource: | https://doi.org/10.1103/PhysRevD.81.052010 |
| ISSN: | 1550-7998 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 601938.pdf | 889.96 kB | Adobe PDF | View/Open |
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