期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.232002
关键词
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资金
- MEXT
- JSPS
- Nagoya's TLPRC (Japan)
- ARC
- DIISR (Australia)
- NSFC (China)
- MSMT (Czechia)
- DST (India)
- INFN (Italy)
- MEST
- NRF
- GSDC of KISTI
- WCU (Korea)
- MNiSW (Poland)
- MES
- RFAAE (Russia)
- ARRS (Slovenia)
- SNSF (Switzerland)
- NSC
- MOE (Taiwan)
- DOE
- NSF (USA)
- Direct For Mathematical & Physical Scien [0855681] Funding Source: National Science Foundation
- Division Of Physics [0855681] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1205843] Funding Source: National Science Foundation
- Grants-in-Aid for Scientific Research [21105002] Funding Source: KAKEN
- National Research Foundation of Korea [과06A1104, 2011-0029457, R32-2012-000-20001-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We report the first evidence for the eta(b)(2S) using the h(b)(2P) -> eta(b)(2S)gamma transition and the first observation of the h(b)(1P) -> eta(b)(1S)gamma and h(b)(2P) -> eta(b)(1S)gamma transitions. The mass and width of the eta(b)(1S) and eta(b)(2S) are measured to be m(eta b(1S)) = (9402.4 +/- 1.5 +/- 1.8) MeV/c(2), m eta(b(2S)) = (9999.0 +/- 3.5 +/- 2.8 -1.9) MeV/c(2), and Gamma(eta b)(1S) = (10.8(-3.7-2.0)(+4.0+4.5)) MeV. We also update the h(b)(1P) and h(b)(2P) mass measurements. We use a 133.4 fb(-1) data sample collected at energies near the d5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
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