Probing the high-$x$ content of the nuclei in the fixed-target mode at the LHC

Aleksander Kusina , C. Hadjidakis (1) , D. Kikola , J.P. Lansberg (1) , L. Massacrier (1) , M.G. Echevarria , I. Schienbein (2) , J. Seixas , H.S. Shao (3) , A. Signori , B. Trzeciak , S.J. Brodsky , G. Cavoto , C. da Silva , F. Donato , E.G. Ferreiro (4) , I. Hrivnacova (1) , A. Klein , A. Kurepin , C. Lorce (5) , F. Lyonnet , Y. Makdisi , S. Porteboeuf (6) , C. Quintans , A. Rakotozafindrabe (7) , P. Robbe (8) , W. Scandale , N. Topilskaya , A. Uras (9) , J. Wagner , N. Yamanaka (1) , Z. Yang , A. Zelenski

1 IPNO - Institut de Physique Nucléaire d'Orsay
2 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
3 LPTHE - Laboratoire de Physique Théorique et Hautes Energies
4 LLR - Laboratoire Leprince-Ringuet
5 CPHT - Centre de Physique Théorique [Palaiseau]
6 LPC - Laboratoire de Physique de Clermont
7 DPHN - Département de Physique Nucléaire (ex SPhN)
8 LAL - Laboratoire de l'Accélérateur Linéaire
9 IPNL - Institut de Physique Nucléaire de Lyon

Using the LHCb and ALICE detectors in the fixed-target mode at the LHC offers unprecedented possibilities to study the quark, gluon and heavy-quark content of the proton and nuclei in the poorly known region of the high-momentum fractions. We review our projections for studies of Drell-Yan, charm, beauty and quarkonium production with both detector set-ups used with various nuclear targets and the LHC proton beams. Based on this, we show the expected improvement in the determination of the quark, charm and gluon proton and nuclear PDFs as well as discuss the implication for a better understanding of the cold-nuclear-matter effects in hard-probe production in proton-nucleus collisions.

Mots clés: talk: Aix-Les-Bains 2018/10/01; nucleus: target; p: beam; quarkonium: production; CERN LHC Coll; gluon: structure function; charm; quark: structure function; Drell-Yan process; heavy quark; parton: distribution function; ALICE; LHC-B; experimental results

Domaines: Physique des Hautes Energies - Expérience [hep-ex]

Aleksander Kusina, C. Hadjidakis, D. Kikola, J.P. Lansberg, L. Massacrier, et al.. Probing the high-$x$ content of the nuclei in the fixed-target mode at the LHC. 9th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions, Oct 2018, Aix-Les-Bains, France. pp.110, ⟨10.22323/1.345.0110⟩. ⟨hal-02008900⟩