Evidence for JPC=1-+ exotic meson production in the ηπ- system

被引：0
|
作者：
Dowd, JP [1 ]
机构：
[1] Univ Massachusetts, N Dartmouth, MA 02747 USA
来源：
JINGSHIN THEORETICAL PHYSICS SYMPOSIUM IN HONOR OF PROFESSOR TA-YOU WU | 1998年
关键词：
D O I：
暂无
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The eta pi(-) system has been studied in the reaction pi(-)p --> eta pi(-)p at 18 GeV/c. A large asymmetry in the angular distribution is observed indicating interference between L-even and L-odd partial waves. The a(2)(1320) is observed in the J(PC) = 2(++) wave, as is a broad enhancement between 1.2 and 1.6 GeV/c(2) in the 1(-+) wave. The observed phase difference between these waves shows that there is phase motion in addition to that due to a(2)(1320) decay. The data can be fitted by interference between the a(2)(1320) and an exotic 1(-+) resonance with M = (1370 +/-16(-30)(+50)) MeV/c(2) and Gamma = (385 +/-40(-105)(+65)) MeV/c(2).
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页码：289 / 300
页数：12
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