OBSERVATION OF F1 (1285) -]PI+PI-PI+PI-IN RADIATIVE J/PSI DECAYS

被引：13

作者：

BOLTON, T

BROWN, JS

BUNNELL, KO

BURCHELL, M

BURNETT, TH

CASSELL, RE

COFFMAN, D

COWARD, DH

DEJONGH, F

DRINKARD, J

DUBOIS, GP

EIGEN, G

EISENSTEIN, BI

FREESE, T

GATTO, C

GLADDING, G

HEUSCH, CA

HITLIN, DG

IZEN, JM

KIM, PC

LABS, J

LI, A

LOCKMAN, WS

MALLIK, U

MATTHEWS, CG

MIR, R

MOCKETT, PM

ODIAN, A

PARRISH, L

PITMAN, D

RICHMAN, JD

SADROZINSKI, HFW

SCARLATELLA, M

SCHALK, TL

SCHINDLER, RH

SEIDEN, A

STOCKDALE, IE

TOKI, W

TRIPSAS, B

WANG, MZ

WEINSTEIN, AJ

WILLUTZKI, HJ

WISNIEWSKI, WJ

XU, R

ZHU, Y

机构：

[1] STANFORD UNIV,STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305

[2] UNIV WASHINGTON,DEPT PHYS,SEATTLE,WA 98195

[3] UNIV CALIF SANTA CRUZ,SANTA CRUZ INST PARTICLE PHYS,SANTA CRUZ,CA 95064

[4] UNIV ILLINOIS,DEPT PHYS,URBANA,IL 61801

[5] UNIV IOWA,IOWA CITY,IA 52242

[6] CALTECH,PASADENA,CA 91125

来源：

PHYSICS LETTERS B | 1992年 / 278卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(92)90591-Q

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present an analysis of J/psi --> gamma-f1 (1285), f1 (1285) --> pi+pi-pi+pi-, using the Mark III detector at SPEAR, based on 5.8 x 10(6) produced J/psi events. We measure B(J/psi --> gamma-f1 (1285), f1 (1285) --> pi+pi-pi+pi-) = (4.8 +/- 1.3 +/- 0.9) x 10(-5). We obtain a new measurement of the absolute branching ratio of J/psi --> gamma-f1 (1285). The mixing angle of the f1 (1285) and the f1 (1420) in the 1++ nonet is determined.

引用

页码：495 / 498

页数：4

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