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Evidence of a broad structure at an invariant mass of 4.32 GeV/c(2) in the reaction e(+)e(-)->pi(+)pi(-)psi(2S) measured at BABAR

Abstract:
We present a measurement of the cross section of the process e+e-→π+π-ψ(2S) 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 298fb-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. © 2007 The American Physical Society.
Publication status:
Published

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Journal:
Physical Review Letters
Volume:
98
Issue:
21
Publication date:
2007-05-25
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
12417
Language:
English
Pubs id:
pubs:12417
UUID:
uuid:aa611b41-a692-4e76-a4e8-d305219132cf
Local pid:
pubs:12417
Deposit date:
2013-11-16

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