PRODUCTION OF J/PSI VIA PSI' AND CHI DECAY IN 300-GEV/C PROTON-NUCLEON AND PI+/--NUCLEON INTERACTIONS

被引：106
作者：
ANTONIAZZI, L
ARENTON, M
CAO, Z
CHEN, T
CONETTI, S
COX, B
DELCHAMPS, S
FORTNEY, L
GUFFEY, K
HAIRE, M
IAONNOU, P
JENKINS, CM
JUDD, DJ
KOURKOUMELIS, C
MANOUSAKISKATSIKAKIS, A
KUZMINSKI, J
LECOMPTE, T
MARCHIONNI, A
HE, M
MAZUR, PO
MURPHY, CT
PRAMANTIOTIS, P
RAMEIKA, R
RESVANIS, LK
ROSATI, M
ROSEN, J
SHEN, C
SHEN, Q
SIMARD, A
SMITH, RP
SPIEGEL, L
STAIRS, DG
TAN, Y
TESAREK, RJ
TURKINGTON, T
TURNBULL, L
TURKOT, F
TZAMARIAS, S
VOULGARIS, G
WAGONER, DE
WANG, C
YANG, W
YAO, N
ZHANG, N
ZHANG, X
ZIOULAS, G
ZOU, B
机构：
[1] UNIV ATHENS,ATHENS,GREECE
[2] DUKE UNIV,DURHAM,NC 27706
[3] MCGILL UNIV,MONTREAL H3A 2T8,QUEBEC,CANADA
[4] NANJING UNIV,NANJING,PEOPLES R CHINA
[5] PRAIRIE VIEW A&M UNIV,PRAIRIE VIEW,TX 77445
[6] UNIV VIRGINIA,CHARLOTTESVILLE,VA 22901
[7] NORTHWESTERN UNIV,EVANSTON,IL 60208
[8] SHANDONG UNIV,SHANDONG,PEOPLES R CHINA
来源：
PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 04期
关键词：
D O I：
10.1103/PhysRevLett.70.383
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The production of the chi2 and chi2 states of charmonium has been observed in 300 GeV/c pi+/-N and pN interactions. The fraction of the total inclusive J/psi production due to radiative chi decay has been determined to be 0.40 +/- 0.04, 0.37 +/- 0.03, and 0.30 +/- 0.04 for the pi+, pi-, and proton data, respectively. Total cross sections for chi1 and chi2 production of 131 +/- 18 +/- 14 and 188 +/- 30 +/- 21 nb/nucleon in the 300 GeV/c pi-N interactions have been obtained. By measuring the contributions to the J/psi production due to both psi' and radiative chi decay, the cross sections for direct J/psi production have been determined to be 97 +/- 14, 102 +/- 14, and 89 +/- 12 nb/nucleon for pi+, pi-, and protons, respectively.
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页码：383 / 386
页数：4
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