Partial wave analysis of J/ψ → γ(K+K-π+π-)

被引：26

作者：

Bai, JZ ^{[1
]}

Ban, Y

Bian, JG

Chen, AD

Chen, GP

Chen, HF

Chen, HS

Chen, JC

Chen, XD

Chen, Y

Chen, YB

Cheng, BS

Cui, XZ

Ding, HL

Dong, LY

Du, ZZ

Gao, CS

Gao, ML

Gao, SQ

Gu, JH

Gu, SD

Gu, WX

Guo, YN

Guo, ZJ

Han, SW

Han, Y

He, J

He, JT

He, KL

He, M

Heng, YK

Hu, GY

Hu, HM

Hu, JL

Hu, QH

Hu, T

Huang, GS

Huang, XP

Huang, YZ

Jiang, CH

Jin, Y

Ju, X

Ke, ZJ

Lai, YF

Lang, PF

Li, CG

Li, D

Li, HB

Li, J

Li, JC

机构：

[1] Inst High Energy Phys, Beijing 100039, Peoples R China

[2] Univ Sci & Technol China, Hefei 230026, Peoples R China

[3] Shandong Univ, Jinan 250100, Peoples R China

[4] Hangzhou Univ, Hangzhou 310028, Peoples R China

[5] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China

[6] Peking Univ, Beijing 100871, Peoples R China

[7] Hua Zhong Normal Univ, Wuhan 430079, Peoples R China

[8] CCAST, World Lab, China Ctr Adv Sci & Technol, Beijing 100080, Peoples R China

[9] Nankai Univ, Tianjin 300071, Peoples R China

[10] Henan Normal Univ, Xinxiang 453002, Peoples R China

[11] Wuhan Univ, Wuhan 430072, Peoples R China

[12] Univ London Queen Mary & Westfield Coll, London E1 4NS, England

[13] Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China

[14] Univ London Queen Mary & Westfield Coll, London E1 4NS, England

来源：

PHYSICS LETTERS B | 2000年 / 472卷 / 1-2期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

D O I：

10.1016/S0370-2693(99)01399-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

BES data on J/psi --> gamma(K+K- pi(+)pi(-)) are presented. The K* (K) over bar* contribution peaks strongly near threshold. It is fitted with a broad 0(-+) resonance with mass M = 1800 +/- 100 MeV, width Gamma = 500 +/- 200 MeV. A broad 2(++) resonance peaking at 2020 MeV is also required with width similar to 500 MeV. There is further evidence for a 2(-+) component peaking at 2.55 GeV. The non-K* (K) over bar* contribution is close to phase space; it peaks at 2.6 GeV and is very different from K * K (*) over bar. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：200 / 206

页数：7

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