Color-octet heavy quarkonium productions in Z(0) decays at LEP

被引：22

作者：

Baek, S

Ko, P

Lee, J

Song, HS

机构：

[1] SEOUL NATL UNIV, DEPT PHYS, SEOUL 151742, SOUTH KOREA

[2] HONGIK UNIV, DEPT PHYS, SEOUL 121791, SOUTH KOREA

来源：

PHYSICS LETTERS B | 1996年 / 389卷 / 03期

关键词：

D O I：

10.1016/S0370-2693(96)01313-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the energy and the polar angle distributions of J/psi's produced via the color-singlet and the color-octet (S-3(1)(8)) mechanisms in Z(0) --> J/psi + X at LEP. Since both distributions of the J/psi produced via color-octet mechanism are significantly different from those via color-singlet mechanism, these observables can be used as tests of color-octet production mechanism for heavy quarkonia. We also discuss Z(0) --> Y + X and W --> J/psi (or Y) + X in brief.

引用

页码：609 / 615

页数：7

共 19 条

[1]

[Anonymous], UNPUB

[2]

[Anonymous], 27 INT C HIGH EN PHY

[3]

BERGER E, 1996, SNUTP96019

[4] RIGOROUS QCD ANALYSIS OF INCLUSIVE ANNIHILATION AND PRODUCTION OF HEAVY QUARKONIUM [J].

BODWIN, GT ;

BRAATEN, E ;

LEPAGE, GP .

PHYSICAL REVIEW D, 1995, 51 (03) :1125-1171

[5] COLOR-OCTET FRAGMENTATION AND THE PSI'-SURPLUS AT THE FERMILAB-TEVATRON [J].

BRAATEN, E ;

FLEMING, S .

PHYSICAL REVIEW LETTERS, 1995, 74 (17) :3327-3330

[6] Z(0) DECAY INTO CHARMONIUM VIA CHARM QUARK FRAGMENTATION [J].

BRAATEN, E ;

CHEUNG, K ;

YUAN, TC .

PHYSICAL REVIEW D, 1993, 48 (09) :4230-4235

[7]

BRAATEN E, 1995, NUHEPTH959

[8]

BRAATEN E, 1996, IN PRESS ANN REV NUC

[9] Color-octet contributions to J/psi photoproduction [J].

Cacciari, M ;

Kramer, M .

PHYSICAL REVIEW LETTERS, 1996, 76 (22) :4128-4131

[10] Color-octet quarkonium production at the Z pole [J].

Cheung, K ;

Keung, WY ;

Yuan, TC .

PHYSICAL REVIEW LETTERS, 1996, 76 (06) :877-880

← 1 2 →