MULTIPLICITIES FOR LHC NUCLEAR COLLISIONS USING HERA STRUCTURE FUNCTIONS

被引：44

作者：

ESKOLA, KJ ^{[1
]}

KAJANTIE, K ^{[1
]}

RUUSKANEN, PV ^{[1
]}

机构：

[1] UNIV HELSINKI,THEORET PHYS RES INST,SF-00014 HELSINKI,FINLAND

来源：

PHYSICS LETTERS B | 1994年 / 332卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(94)90878-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We compute in QCD perturbation theory the transverse energy carried by gluons, quarks and antiquarks with P(T) greater-than-or-equal-to P0 almost-equal-to 2 GeV in Pb+Pb collisions at square-root s = 5500A GeV by using structure functions compatible with the small-x increase observed at HERA. This gives a perturbative estimate for the energy and entropy density of the bulk system at times tau approximately 0.1 fm. The predicted initial gluon entropy density gives a lower limit of about 2200... 3400 for the final charged multiplicity. Sources of further entropy increase are discussed.

引用

页码：191 / 194

页数：4

共 12 条

[1]

ABT I, 1993, DESY93117 REP

[2] PARTON EQUILIBRATION IN RELATIVISTIC HEAVY-ION COLLISIONS [J].

BIRO, TS ;

VANDOORN, E ;

MULLER, B ;

THOMA, MH ;

WANG, XN .

PHYSICAL REVIEW C, 1993, 48 (03) :1275-1284

[3]

DERRICK M, 1993, DESY93110 REP

[4] Q2-DEPENDENT PARAMETRIZATIONS OF PARTON DISTRIBUTION-FUNCTIONS [J].

DUKE, DW ;

OWENS, JF .

PHYSICAL REVIEW D, 1984, 30 (01) :49-54

[5] ONE-JET INCLUSIVE CROSS-SECTION AT ORDER ALPHA-S(3) - QUARKS AND GLUONS [J].

ELLIS, SD ;

KUNSZT, Z ;

SOPER, DE .

PHYSICAL REVIEW LETTERS, 1990, 64 (18) :2121-2124

[6] SCALE DEPENDENCE OF NUCLEAR GLUON STRUCTURE [J].

ESKOLA, KJ .

NUCLEAR PHYSICS B, 1993, 400 (1-3) :240-266

[7] PERTURBATIVE GLUON SHADOWING IN HEAVY-NUCLEI [J].

ESKOLA, KJ ;

QIU, JW ;

WANG, XN .

PHYSICAL REVIEW LETTERS, 1994, 72 (01) :36-39

[8] QUARK AND GLUON PRODUCTION IN HIGH-ENERGY NUCLEUS NUCLEUS COLLISIONS [J].

ESKOLA, KJ ;

KAJANTIE, K ;

LINDFORS, J .

NUCLEAR PHYSICS B, 1989, 323 (01) :37-52

[9] COLOR CONDUCTIVITY AND EVOLUTION OF THE MINIJET PLASMA [J].

ESKOLA, KJ ;

GYULASSY, M .

PHYSICAL REVIEW C, 1993, 47 (05) :2329-2337

[10] PARTON DISTRIBUTIONS UPDATED [J].

MARTIN, AD ;

STIRLING, WJ ;

ROBERTS, RG .

PHYSICS LETTERS B, 1993, 306 (1-2) :145-150

← 1 2 →