CERN Accelerating science

Article
Report number	arXiv:1903.03379
Title	Spin Physics with a fixed-target experiment at the LHC
Author(s)	Echevarria, M.G. (INFN, Pavia) ; Brodsky, S.J. (SLAC) ; Cavoto, G. (INFN, Rome ; Rome U.) ; Da Silva, C. (Los Alamos) ; Donato, F. (INFN, Turin ; Turin U.) ; Ferreiro, E.G. (Santiago de Compostela U.) ; Hadjidakis, C. (Orsay, IPN) ; Hřivnácová, I. (Orsay, IPN) ; Kikoła, D. (Warsaw U. of Tech.) ; Klein, A. (Los Alamos) ; Kurepin, A. (Moscow, INR) ; Kusina, A. (Cracow, INP) ; Lansberg, J.P. (Orsay, IPN) ; Lorcé, C. (Ecole Polytechnique, CPHT) ; Lyonnet, F. (Southern Methodist U.) ; Makdisi, Y. (BNL, C-A Dept.) ; Massacrier, L. (Orsay, IPN) ; Porteboeuf, S. (Clermont-Ferrand U.) ; Rakotozafindrabe, A. (IRFU, Saclay, DPHN) ; Robbe, P. (Orsay, LAL) ; Scandale, W. (CERN) ; Schienbein, I. (LPSC, Grenoble) ; Seixas, J. (Lisbon, IST) ; Shao, H.S. (Paris, LPTHE) ; Signori, A. (Argonne) ; Topilskaya, N. (Moscow, INR) ; Trzeciak, B. (Utrecht U.) ; Uras, A. (Lyon, IPN) ; Wagner, J. (NCBJ, Warsaw) ; Yamanaka, N. (Orsay, IPN) ; Yang, Z. (Tsinghua U., Beijing, CHEP) ; Zelenski, A. (BNL, C-A Dept.) ; Yang, Z. (Tsinghua U., Beijing, CHEP) ; Zelenski, A. (Brookhaven Natl. Lab.)
Publication	SISSA, 2019-08-08
Imprint	2019-03-08
Number of pages	7
Note	6 pages, 4 figures. Proceedings of the 23rd International Spin Physics Symposium (SPIN 2018), Ferrara, Italy, September 10-14, 2018
In:	PoS SPIN2018 (2019) 063
In:	23rd International Spin Symposium, Ferrara, Italy, 10 - 14 Sep 2018, pp.063
DOI	10.22323/1.346.0063
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Abstract	The multi-TeV proton and ion beams of the LHC would allow for the most energetic fixed-target experiment ever. In particular, $pp$, $p$d and $p$A collisions could be performed at $\sqrt{s_{NN}}$ = 115 GeV, as well as Pb$p$ and PbA collisions at $\sqrt{s_{NN}}$ = 72 GeV, in a parasitic way by making use of the already existing LHCb and ALICE detectors in fixed-target mode. This would offer the possibility to carry out a ground-breaking physics program, to study the nucleon and nuclear structure at high $x$, the spin content of the nucleon and the phases of the nuclear matter from a new rapidity viewpoint. In this talk I focus on the spin physics axis of the full program developed so far by the AFTER@LHC study group.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) publication: (License: CC-BY-NC-ND-4.0)

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