STRUCTURE IN PI+PI-SYSTEM AT 480-MEV

被引：3

作者：

DUBAL, L

ROOS, M

机构：

[1] University of Geneva, CERN, Geneva

[2] CERN, Geneva

来源：

NUCLEAR PHYSICS B | 1969年 / B 12卷 / 01期

关键词：

D O I：

10.1016/0550-3213(69)90319-8

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A 25 smb enhancement (4-5 standard deviations) in a compiled π+π- mass distribution from π-p → π+π-n is studied. Failing to explain it as an effect of misidentification (accidental kinematic misfits), we propose that it is due to an I = 0 resonance, decaying strongly or electromagnetically. For the strong decay we study a particular model which fits the mass distribution well. The mass of the resonance is 482 ± 3 MeV and the width ≲ 25 MeV. In our particular strong decay model the width is 9 MeV. Experimental arguments render the electromagnetic decay less likely. © 1969.

引用

页码：146 / &

共 10 条

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