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First study of eta(c)(1S), eta(1760) and X(1835) production via eta 'pi(+)pi(-) final states in two-photon collisionsopen access
- Authors
- Zhang, C. C.; Aihara, H.; Asner, D. M.; Aushev, T.; Bakich, A. M.; Ban, Y.; Belous, K.; Bischofberger, M.; Browder, T. E.; Chen, A.; Cheon, B. G.; Chilikin, K.; Chistov, R.; Choi, Y.; Dalseno, J.; Danilov, M.; Eidelman, S.; Feindt, M.; Gaur, V.; Gabyshev, N.; Goh, Y. M.; Han, Y. L.; Hayashii, H.; Horii, Y.; Hou, W. -S.; Hyun, H. J.; Iijima, T.; Inami, K.; Ishikawa, A.; Iwabuchi, M.; Julius, T.; Kiesling, C.; Kim, H. O.; Kim, M. J.; Kim, Y. J.; Ko, B. R.; Kodys, P.; Korpar, S.; Krokovny, P.; Kuzmin, A.; Li, J.; Libby, J.; Liu, Y.; Liu, Z. Q.; Louvot, R.; Matvienko, D.; McOnie, S.; Mizuk, R.; Nakano, E.; Nakao, M.; Nakazawa, H.; Natkaniec, Z.; Nishida, S.; Ohshima, T.; Okuno, S.; Olsen, S. L.; Pakhlov, P.; Pakhlova, G.; Park, H.; Park, H. K.; Pestotnik, R.; Petric, M.; Piilonen, L. E.; Roehrken, M.; Ryu, S.; Sahoo, H.; Sakai, Y.; Santel, D.; Sanuki, T.; Schneider, O.; Schwanda, C.; Sevior, M. E.; Shapkin, M.; Shebalin, V.; Shen, C. P.; Shibata, T. -A.; Shiu, J. -G.; Shwartz, B.; Smerkol, P.; Sohn, Y. -S.; Solovieva, E.; Stanic, S.; Staric, M.; Sumihama, M.; Sumiyoshi, T.; Tikhomirov, I.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Varner, G.; Vinokurova, A.; Vorobyev, V.; Wang, P.; Wang, X. L.; Watanabe, Y.; Williams, K. M.; Yabsley, B. D.; Yamashita, Y.; Yuan, C. Z.; Zhang, Z. P.; Zhulanov, V.
- Issue Date
- Sep-2012
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v.86, no.5, pp.1 - 12
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICAL REVIEW D
- Volume
- 86
- Number
- 5
- Start Page
- 1
- End Page
- 12
- ISSN
- 1550-7998
- Abstract
- The invariant mass spectrum of the eta 'pi(+)pi(-) final state produced in two-photon collisions is obtained using a 673 fb(-1) data sample collected in the vicinity of the Gamma(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We observe a clear signal of the eta(c)(1S) and measure its mass and width to be Md(eta(c)(1S)) = (2982.7 +/- 1.8(stat) +/- 2.2(syst) +/- 0.3(model)) MeV/c(2) and Gamma(eta(c)(1S)) = (37.8(-5.3)(+5.8)(stat) +/- 2.8(syst) +/- 1.4(model)) MeV/c(2). The third error is an uncertainty due to possible interference between the eta(c)(1S) and a nonresonant component. We also report the first evidence for eta(1760) decay to eta'pi(+)pi(-); we find two solutions for its parameters, depending on the inclusion or not of the X(1835), whose existence is of marginal significance in our data. From a fit to the mass spectrum using coherent X(1835) and eta(1760) resonant amplitudes, we set a 90% confidence level upper limit on the product Gamma B-gamma gamma(eta'pi(+)pi(-)) for the X(1835).
- Appears in
Collections - 서울 자연과학대학 > 서울 물리학과 > 1. Journal Articles
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Related Researcher
- Cheon, Byung Gu
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)