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

被引:21
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
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
收藏
页码:609 / 615
页数:7
相关论文
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
    BODWIN, GT
    BRAATEN, E
    LEPAGE, GP
    [J]. PHYSICAL REVIEW D, 1995, 51 (03): : 1125 - 1171
  • [5] COLOR-OCTET FRAGMENTATION AND THE PSI'-SURPLUS AT THE FERMILAB-TEVATRON
    BRAATEN, E
    FLEMING, S
    [J]. PHYSICAL REVIEW LETTERS, 1995, 74 (17) : 3327 - 3330
  • [6] Z(0) DECAY INTO CHARMONIUM VIA CHARM QUARK FRAGMENTATION
    BRAATEN, E
    CHEUNG, K
    YUAN, TC
    [J]. 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
    Cacciari, M
    Kramer, M
    [J]. PHYSICAL REVIEW LETTERS, 1996, 76 (22) : 4128 - 4131
  • [10] Color-octet quarkonium production at the Z pole
    Cheung, K
    Keung, WY
    Yuan, TC
    [J]. PHYSICAL REVIEW LETTERS, 1996, 76 (06) : 877 - 880