A JPC=0-+ enhancement at the f0(980)η threshold

被引：11
|
作者：
Anisovich, AV [1 ]
Baker, CA
Batty, CJ
Bugg, DV
Hodd, C
Nikonov, VA
Sarantsev, AV
Sarantsev, VV
Zou, BS
机构：
[1] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England
[2] Queen Mary Univ London, London E1 4NS, England
[3] St Petersburg Nucl Phys Inst, Gatchina 199350, St Petersburg D, Russia
来源：
PHYSICS LETTERS B | 2000年 / 472卷 / 1-2期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1016/S0370-2693(99)01398-2
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
New data on (p) over bar p --> eta pi(0)pi(0)pi(0) at beam momenta 900-1200 MeV/c reveal evidence for a threshold enhancement in the f(0)(980)eta channel. Quantum numbers J(PC) = 0(-+) are preferred strongly over 1(++) and 2(-+). The enhancement may be interpreted as the high mass tail of a resonance below threshold decaying to f(0)(980)eta. The eta(1440)pi final state is observed with pi(1440) --> eta sigma and a(0)(980)pi. It is produced dominantly from the (p) over bar p P-3(0) channel, and is consistent with S-wave decays from an 1 = 1, J(PC) = 0(++) resonance observed earlier at 2025 MeV. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：168 / 174
页数：7
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