Interactions of quarkonium at low energies

被引:0
作者
Fujii, H
Kharzeev, D
机构
[1] Univ Tokyo, Inst Phys, Tokyo 1538902, Japan
[2] Brookhaven Natl Lab, RIKEN, BNL, Upton, NY 11973 USA
关键词
D O I
10.1016/S0375-9474(99)00517-5
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
We present two examples of the short-distance QCD calculations for the quarkonium (Phi) interactions; 1) pi Phi elastic and pi Phi -> pi Phi cross sections, and 2) the potential between two Phi's. The former is relevant for the Phi suppression in heavy ion collisions; we find that the corresponding cross sections are very small. For the latter we derive the sum rule which relates the strength of the potential to the energy density of the QCD vacuum. The key starting point in both cases is that the leading operator in the operator product expansion (OPE) for the ion-energy scattering amplitude is the trace of the QCD stress tensor whose matrix elements are unambiguously fixed LS the lon energy theorem. The resonances in the two-pion scalar channel are taken into account as a formfactor.
引用
收藏
页码:542C / 545C
页数:4
相关论文
共 16 条
[1]   SOME REMARKS ON VAN DER WAALS FORCES IN QCD [J].
APPELQUIST, T ;
FISCHLER, W .
PHYSICS LETTERS B, 1978, 77 (4-5) :405-410
[2]   SHORT-DISTANCE ANALYSIS FOR HEAVY-QUARK SYSTEMS .2. APPLICATIONS [J].
BHANOT, G ;
PESKIN, ME .
NUCLEAR PHYSICS B, 1979, 156 (03) :391-416
[3]   Is J/Psi-nucleon scattering dominated by the gluonic van der Waals interaction? [J].
Brodsky, SJ ;
Miller, GA .
PHYSICS LETTERS B, 1997, 412 (1-2) :125-130
[4]   Hadronic and electromagnetic interactions of quarkonia [J].
Chen, JW ;
Savage, MJ .
PHYSICAL REVIEW D, 1998, 57 (05) :2837-2846
[5]  
FUJII H, HEPPH9903495
[6]   HADRONIC TRANSITIONS BETWEEN QUARK-ANTIQUARK BOUND-STATES [J].
GOTTFRIED, K .
PHYSICAL REVIEW LETTERS, 1978, 40 (10) :598-601
[7]  
KAIDALOV A, 1993, QCD HIGH ENERGY INTE
[8]   QUARKONIUM INTERACTIONS IN HADRONIC MATTER [J].
KHARZEEV, D ;
SATZ, H .
PHYSICS LETTERS B, 1994, 334 (1-2) :155-162
[9]  
KHARZEEV D, 1996, SELECTED TOPICS NONP
[10]   J-PSI-SUPPRESSION BY QUARK GLUON PLASMA FORMATION [J].
MATSUI, T ;
SATZ, H .
PHYSICS LETTERS B, 1986, 178 (04) :416-422