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Measurements of the mass and width of the eta(c) meson and of an eta(c)(2S) candidate.

Abstract:

The mass m(eta(c)) and total width Gamma(eta(c))(tot) of the eta(c) meson have been measured in two-photon interactions at the SLAC e(+)e(-) asymmetric B Factory with the BABAR detector. With a sample of approximately 2500 reconstructed eta(c)-->K(0)(S)K+/-pi(-/+) decays in 88 fb(-1) of data, the results are m(eta(c))=2982.5+/-1.1(stat)+/-0.9(syst) MeV/c(2) and Gamma(eta(c))(tot)=34.3+/-2.3(stat)+/-0.9(syst) MeV/c(2). Using the same decay mode, a second resonance with 112+/-24 events is ob...

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Publication status:
Published

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Journal:
Physical Review Letters
Volume:
92
Issue:
14
Pages:
142002
Publication date:
2004-04-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
15442
Language:
English
Keywords:
Pubs id:
pubs:15442
UUID:
uuid:1f44d405-974c-40e1-8f0f-67cbe23dbd76
Local pid:
pubs:15442
Deposit date:
2012-12-19

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