RADIATIVE DECAY OF J/PSI INTO ETA(1430) AND NEARBY STATES

被引：67
|
作者：
AUGUSTIN, JE
COSME, G
COUCHOT, F
FULDA, F
GROSDIDIER, G
JEANMARIE, B
LEPELTIER, V
MANE, F
SZKLARZ, G
JOUSSET, J
AJALTOUNI, Z
FALVARD, A
MICHEL, B
MONTRET, JC
BALDINI, R
CALCATERRA, A
BISELLO, D
BUSETTO, G
CASTRO, A
PESCARA, L
SARTORI, P
STANCO, L
机构：
[1] UNIV CLERMONT FERRAND,PHYS CORPUSCULAIRE LAB,F-63170 CLERMONT FERRAND,FRANCE
[2] IST NAZL FIS NUCL,LAB NAZL FRASCATI,I-00044 FRASCATI,ITALY
[3] IST NAZL FIS NUCL,I-35131 PADUA,ITALY
[4] UNIV PADUA,DEPARTIMENTO ANAT COMPAREE,I-35131 PADUA,ITALY
来源：
PHYSICAL REVIEW D | 1990年 / 42卷 / 01期
关键词：
D O I：
10.1103/PhysRevD.42.10
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Radiative decays of J into K+K-0, KS0K, +-, and have been studied in the (1430) mass range from the 8.6×106J's produced in the DM2 experiment at the Orsay e+e- storage ring (DCI). The (1430) is observed in both KS0K and K+K-0 channels. A three-body decay-angular analysis of the whole signal supports a JP=0- assignment. A substantial KK*(892) dynamics is present whereas the significance of the a0(980) contribution cannot be evaluated. The (1430) is not observed in the channel which shows a peak in the f1(1285) (1275) mass range and a new state at 1398 MeV/c2, 50 MeV/c2 wide. An a0(980) intermediate-state contribution is present at least in the latter state. Finally, the low-statistics final state gives no evidence of (1430) production. © 1990 The American Physical Society.
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页码：10 / 19
页数：10
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