Double-quarkonium production at a fixed-target experiment at the LHC (AFTER@LHC)

被引：43

作者：

Lansberg, Jean-Philippe ^{[1
]}

Shao, Hua-Sheng ^{[2
]}

机构：

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

[2] CERN, PH Dept, TH Unit, CH-1211 Geneva 23, Switzerland

来源：

NUCLEAR PHYSICS B | 2015年 / 900卷

关键词：

DOUBLE-PARTON SCATTERINGS; PAIR PRODUCTION; UPSILON PRODUCTION; PP COLLISIONS; QCD ANALYSIS; PHYSICS; J/PSI;

D O I：

10.1016/j.nuclphysb.2015.09.005

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present predictions for double-quarkonium production in the kinematical region relevant for the proposed fixed-target experiment using the LHC beams (dubbed as AFTER@LHC). These include all spin-triplet S-wave charmonium and bottomonium pairs, i.e. psi(n(1)S) + psi(n(2)S), psi(n(1)S) + Upsilon(m(1)S) and Upsilon(m(1)S) + Upsilon(m(2)S) with n(1), n(2) = 1, 2 and m(1), m(2) = 1, 2, 3. We calculate the contributions from double-parton scatterings and single-parton scatterings. With an integrated luminosity of 20 fb(-1) to be collected at AFTER@LHC, we find that the yields for double-charmonium production are large enough for differential distribution measurements. We discuss some differential distributions for J/psi + J/psi production, which can help to study the physics of double-parton and single-parton scatterings in a new energy range and which might also be sensitive to double intrinsic c (c) over bar ccoalescence at large negative Feynman x. (C) 2015 The Authors. Published by Elsevier B.V.

引用

页码：273 / 294

页数：22

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