PoS - Proceedings of Science
Volume 324 - XVII International Workshop on Polarized Sources, Targets & Polarimetry (PSTP2017) - New initiatives
Physics opportunities with a fixed target experiment at the LHC (AFTER@LHC)
C. Hadjidakis*, M. Anselmino, R. Arnaldi, S.J. Brodsky, V. Chambert, C. Da Silva, J.P. Didelez, M.G. Echevarria, E.G. Ferreiro, F. Fleuret, Y. Gao, B. Genolini, I. Hrivnácová, D. Kikola, A. Klein, A. Kurepin, A. Kusina, J.P. Lansberg, C. Lorcé, F. Lyonnet, G. Martinez, L. Massacrier, A. Nass, C. Pisano, P. Robbe, I. Schienbein, M. Schlegel, E. Scomparin, J. Seixas, H.S. Shao, A. Signori, E. Steffens, L. Szymanowski, N. Topilskaya, B. Trzeciak, U.I. Uggerhøj, A. Uras, R. Ulrich, J. Wagner, N. Yamanaka and Z. Yanget al. (click to show)
Full text: pdf
Pre-published on: May 31, 2018
Published on: June 14, 2018
By extracting the beam with a bent crystal or by using an internal gas target, the multi-TeV proton and lead LHC beams allow one to perform the most energetic fixed-target experiments (AFTER@LHC) and to study $p$+$p$ and $p$+A collisions at $\sqrt{s_{NN}}$=115 GeV and Pb+$p$ and Pb+A collisions at $\sqrt{s_{NN}}$=72 GeV. Such studies would address open questions in the domain of the nucleon and nucleus partonic structure at high-$x$, quark-gluon plasma and, by using longitudinally or transversally polarised targets, spin physics.
In this paper, we discuss the physics opportunities of a fixed-target experiment at the LHC and we report on the possible technical implementations of a high-luminosity experiment. We finally present feasibility studies for Drell-Yan, open heavy-flavour and quarkonium production, with an emphasis on high-$x$ and spin physics.
DOI: https://doi.org/10.22323/1.324.0035
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