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.

引用

页码：10 / 19

页数：10

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