Prospects for quarkonium studies at the high-luminosity LHC

Emilien Chapon; David d'Enterria; Bertrand Ducloue; Miguel G. Echevarria; Pol-Bernard Gossiaux; Vato Kartvelishvili; Tomas Kasemets; Jean-Philippe Lansberg; Ronan McNulty; Darren D. Price; Hua-Sheng Shao; Charlotte Van Hulse; Michael Winn; Jaroslav Adam; Liupan An; Denys Yen Arrebato Villar; Shohini Bhattacharya; Francesco G. Celiberto; Cvetan Cheshkov; Umberto D'Alesio; Cesar da Silva; Elena G. Ferreiro; Chris A. Flett; Carlo Flore; Maria Vittoria Garzelli; Jonathan Gaunt; Jibo He; Yiannis Makris; Cyrille Marquet; Laure Massacrier; Thomas Mehen; Cedric Mezrag; Luca Micheletti; Riccardo Nagar; Maxim A. Nefedov; Melih A. Ozcelik; Biswarup Paul; Cristian Pisano; Jian-Wei Qiu; Sangem Rajesh; Matteo Rinaldi; Florent Scarpa; Maddie Smith; Pieter Taels; Amy Tee; Oleg Teryaev; Ivan Vitev; Kazuhiro Watanabe; Nodoka Yamanaka; Xiaojun Yao; Yanxi Zhang

Paper

Prospects for quarkonium studies at the high-luminosity LHC

Abstract

Prospects for quarkonium-production studies accessible during the upcoming high-luminosity phases of the CERN Large Hadron Collider operation after 2021 are reviewed. Current experimental and theoretical open issues in the field are assessed together with the potential for future studies in quarkonium-related physics. This will be possible through the exploitation of the huge data samples to be collected in proton-proton, proton-nucleus and nucleus-nucleus collisions, both in the collider and fixed-target modes. Such investigations include, among others, those of: (i) J/psi and Upsilon produced in association with other hard particles; (ii) chi(c,b) and eta(c,b) down to small transverse momenta; (iii) the constraints brought in by quarkonia on gluon PDFs, nuclear PDFs, TMDs, GPDs and GTMDs, as well as on the low-x parton dynamics; (iv) the gluon Sivers effect in polarised-nucleon collisions; (v) the properties of the quark-gluon plasma produced in ultra-relativistic heavy-ion collisions and of collective partonic effects in general; and (vi) double and triple parton scatterings.