Quarkonium Physics at a Fixed-Target Experiment using the LHC Beams

被引：47

作者：

Lansberg, J. P. ^{[1
]}

Brodsky, S. J. ^{[2
]}

Fleuret, F. ^{[3
]}

Hadjidakis, C. ^{[1
]}

机构：

[1] Univ Paris 11, IPNO, CNRS IN2P3, F-91406 Orsay, France

[2] Stanford Univ, SLAC Natl Accelerator Lab, Dept Theoret Phys, Menlo Pk, CA 94025 USA

[3] Ecole Polytech, Lab Leprince Ringuet, CNRS IN2P3, F-91128 Palaiseau, France

来源：

FEW-BODY SYSTEMS | 2012年 / 53卷 / 1-2期

关键词：

SINGLE-SPIN ASYMMETRIES; PROMPT J/PSI PRODUCTION; ORDER QCD CORRECTIONS; PP COLLISIONS; CHARMONIUM PRODUCTION; TRANSVERSE-MOMENTUM; INTRINSIC CHARM; J-PSI; P(P)OVER-BAR COLLISIONS; HADRONIC COLLISIONS;

D O I：

10.1007/s00601-012-0445-8

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We outline the many quarkonium-physics opportunities offered by a multi-purpose fixed-target experiment using the p and Pb Large Hadron Collider (LHC) beams extracted by a bent crystal. This provides an integrated luminosity of 0.5 fb(-1) per year on a typical 1 cm-long target. Such an extraction mode does not alter the performance of the collider experiments at the LHC. With such a high luminosity, one can analyse quarkonium production in great details in pp, pd and pA collisions at GeV and at GeV in PbA collisions. In a typical pp (pA) run, the obtained quarkonium yields per unit of rapidity are 2-3 orders of magnitude larger than those expected at RHIC and about, respectively, 10(70) times larger than for ALICE. In PbA, they are comparable. By instrumenting the target-rapidity region, the large negative-x (F) domain can be accessed for the first time, greatly extending previous measurements by Hera-B and E866. Such analyses should help resolving the quarkonium-production controversies and clear the way for gluon PDF extraction via quarkonium studies. The nuclear target-species versatility provides a unique opportunity to study nuclear matter and the features of the hot and dense matter formed in PbA collisions. A polarised proton target allows the study of transverse-spin asymmetries in J/psi and production, providing access to the gluon and charm Sivers functions.

引用

页码：11 / 25

页数：15

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