Further study of 1-+ exotic meson in the reaction π-p → ηπ-p at 18 GeV/c

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作者：
Korotkikh, VL [1 ]
机构：
[1] Moscow State Univ, Nucl Res Inst, Moscow 117321, Russia
来源：
QUARK CONFINEMENT AND THE HADRON SPECTRUM III | 2000年 / 8卷
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O412 [相对论、场论]; O572.2 [粒子物理学];
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摘要：
Details of the analysis of the eta pi (-) system studies(1) in the reaction pi -p --> eta pi (-)p at 18 GeV/c are given. The amplitude analysis indicates the presence of interference between the a(2)(1320) and a J(PC) = 1(-+) wave between 1.2 and 1.6 GeV/c(2). The phase difference between these waves shows phase motion not attributable solely to the a(2)(1320). The data can be fitted by interference between the a(2)(1320) and an exotic 1(-+) resonance with M = (1370 +/-16 (+50)(-30)) MeV/c(2) and Gamma = (385 +/-40 (+65)(-105)) MeV/c(2).
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页码：301 / 304
页数：4
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