MEASUREMENT OF THE 2-PHOTON WIDTH OF THE ETA-MESON AND ETA'-MESON

被引：36

作者：

ROE, NA

BARTHA, G

BURKE, DL

GARBINCIUS, P

HAWKINS, CA

JONKER, MJ

STEELE, TR

JOHNSON, AS

WHITAKER, JS

WILSON, RJ

HEARTY, C

ROTHBERG, JE

YOUNG, KK

HOLLEBEEK, RJ

机构：

[1] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309

[2] BOSTON UNIV,BOSTON,MA 02215

[3] UNIV WASHINGTON,SEATTLE,WA 98195

[4] UNIV PENN,PHILADELPHIA,PA 19104

来源：

PHYSICAL REVIEW D | 1990年 / 41卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.41.17

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Formation of the and mesons in two-photon interactions has been observed with the ASP detector at the SLAC e+e- storage ring PEP (s=29 GeV). In a data sample of 108 pb-1, a total of 2287and 547 events have been detected in the decay mode. The two-photon widths are determined to be =0.4900.0100.048 keV and =4.960.230.72 keV. The SU(3) pseudoscalar mixing angle deduced from these values is p=-19.8°2.2°. © 1990 The American Physical Society.

引用

页码：17 / 21

页数：5

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