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

共 16 条

[1] AXIAL-VECTOR VERTEX IN SPINOR ELECTRODYNAMICS [J].

ADLER, SL .

PHYSICAL REVIEW, 1969, 177 (5P2) :2426-&

[2]

BARTHA G, 1989, NUCL INSTRUM METH A, V275, P118

[3] A PCAC PUZZLE - PI0-)GAMMAGAMMA IN SIGMA-MODEL [J].

BELL, JS ;

JACKIW, R .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS, 1969, 60 (01) :47-+

[4] LARGE-ANGLE 2-PHOTON EXCLUSIVE CHANNELS IN QUANTUM CHROMODYNAMICS [J].

BRODSKY, SJ ;

LEPAGE, GP .

PHYSICAL REVIEW D, 1981, 24 (07) :1808-1817

[5] RADIATIVE WIDTH OF ETA MESON [J].

BROWMAN, A ;

DEWIRE, J ;

GITTELMA.B ;

HANSON, KM ;

LOH, E ;

LEWIS, R .

PHYSICAL REVIEW LETTERS, 1974, 32 (19) :1067-1070

[6] CHIRAL LOOPS IN PI-0,ETA-0-]GAMMA-GAMMA AND ETA-ETA' MIXING [J].

DONOGHUE, JF ;

HOLSTEIN, BR ;

LIN, YCR .

PHYSICAL REVIEW LETTERS, 1985, 55 (25) :2766-2769

[7]

FORD RL, 1978, SLACPUB0210 REP

[8] ETA-ETA' MIXING ANGLE [J].

GILMAN, FJ ;

KAUFFMAN, R .

PHYSICAL REVIEW D, 1987, 36 (09) :2761-2767

[9]

HAWKINS CA, 1989, SLAC337 STANF U REP

[10]

MARSISKE H, 1988, THESIS HAMBURG U

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