Exotic meson production in the f(1)(1285)pi(-) system observed in the reaction pi(-)p ->eta pi(+)pi(-)pi(-)p at 18 GeV/c
文献类型：期刊论文
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2004 |
| 卷号 | 595页码:109-117 |
| 关键词 | HYBRID MESONS MODEL FORMALISM MATRIX DECAY STATE |
| 通讯作者 | Kuhn, J (reprint author), Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA. |
| 英文摘要 | This Letter reports results from the partial wave analysis of the pi(-)pi(-)pi(+)eta final state in pi(-)p collisions at 18 GeV/c. Strong evidence is observed for production of two mesons with exotic quantum numbers of spin, parity and charge conjugation, J(PC) = 1(-+) in the decay channel f(1) (1285)pi(-). The mass M = 1709 +/- 24 +/- 41 MeV/c(2) and width F = 403 +/- 80 +/- 115 MeV/c(2) of the first state are consistent with the parameters of the previously observed pi(1) (1600). The second resonance with mass M = 2001 +/- 30 +/- 92 MeV/c(2) and width F = 333 +/- 52 +/- 49 MeV/c(2) agrees very well with predictions from theoretical models. In addition, the presence Of pi(2)(1900) is confirmed with mass M = 2003 +/- 88 +/- 148 MeV/c(2) and width F = 306 +/- 132 +/- 121 MeV/c(2) and a new state, a(1) (2096), is observed with mass M = 2096 +/- 17 +/- 121 MeV/c(2) and width Gamma = 451 +/- 41 +/- 81 MeV/c(2). The decay properties of these last two states are consistent with flux tube model predictions for hybrid mesons with non-exotic quantum numbers. (C) 2004 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000223143300015 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212433]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 推荐引用方式 GB/T 7714 | . Exotic meson production in the f(1)(1285)pi(-) system observed in the reaction pi(-)p ->eta pi(+)pi(-)pi(-)p at 18 GeV/c[J]. PHYSICS LETTERS B,2004,595:109-117. |
| APA | (2004).Exotic meson production in the f(1)(1285)pi(-) system observed in the reaction pi(-)p ->eta pi(+)pi(-)pi(-)p at 18 GeV/c.PHYSICS LETTERS B,595,109-117. |
| MLA | "Exotic meson production in the f(1)(1285)pi(-) system observed in the reaction pi(-)p ->eta pi(+)pi(-)pi(-)p at 18 GeV/c".PHYSICS LETTERS B 595(2004):109-117. |
入库方式： OAI收割
来源：高能物理研究所
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