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http://hdl.handle.net/2445/140075| Title: | Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/c2 in the Reaction e+e−→π+π−ψ(2S) Measured at BABAR |
| Author: | Graugés Pous, Eugeni BABAR Collaboration |
| Keywords: | Física de partícules Experiments Particle physics Experiments |
| Issue Date: | 24-May-2007 |
| Publisher: | American Physical Society |
| Abstract: | We present a measurement of the cross section of the process e + e − → π + π − ψ ( 2 S ) from threshold up to 8 GeV center-of-mass energy using events containing initial-state radiation, produced at the SLAC PEP-II e + e − storage rings. The study is based on 298 fb − 1 of data recorded with the BABAR detector. A structure is observed in the cross section not far above threshold, near 4.32 GeV. We also investigate the compatibility of this structure with the Y ( 4260 ) previously reported by this experiment. |
| Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.98.212001 |
| It is part of: | Physical Review Letters, 2007, vol. 98, num. 21, p. 212001 |
| URI: | http://hdl.handle.net/2445/140075 |
| Related resource: | https://doi.org/10.1103/PhysRevLett.98.212001 |
| ISSN: | 0031-9007 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 558210.pdf | 263.35 kB | Adobe PDF | View/Open |
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