| Combined fit to BABAR and Belle Data on e~+e~- →φπ~+π~- and φf_0(980) |
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| 作者单位： | SHEN Cheng-Ping(University of Hawaii, Honolulu, HI 96822, USA);YUAN Chang-Zheng(Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China) |
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| 基金项目： | (DE-FG02-04ER41291,National Natural Science Foundation of China,Major State Basic Research Development Program |
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| 摘 要： | A combined fit is performed to the BABAR and Belle measurements of the e+e- →φπ+π- and φf0(980) cross sections for center-of-mass energy between threshold and 3.0 GeV. The resonance parameters of the φ(1680) and Y(2175) are determined. The mass is (1681+-1102) MeV/c2 and the width is (221-+3244) MeV/c2 for the φ(1680), and the mass is (2117+-5499) MeV/c2 and the width is (164+-6890) MeV/c2 for the Y(2175). This information will shed light on the understanding of the nature of the excited φ and Y states observed in e+e- annihilation.
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| 关 键 词： | φ(1680) |
| 收稿时间： | 2010-08-05 |
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