TY - JOUR
T1 - Spin physics and TMD studies at a fixed-target experiment at the LHC (AFTER@LHC)
AU - Lansberg, J. P.
AU - Anselmino, M.
AU - Arnaldi, R.
AU - Brodsky, S. J.
AU - Chambert, V.
AU - Den Dunnen, W.
AU - Didelez, J. P.
AU - Genolini, B.
AU - Ferreiro, E. G.
AU - Fleuret, F.
AU - Gao, Y.
AU - Hadjidakis, C.
AU - Hrvinacova, I.
AU - Lorcé, C.
AU - Massacrier, L.
AU - Mikkelsen, R.
AU - Pisano, C.
AU - Rakotozafindrabe, A.
AU - Rosier, P.
AU - Schienbein, I.
AU - Schlegel, M.
AU - Scomparin, E.
AU - Trzeciak, B.
AU - Uggerhøj, U. I.
AU - Ulrich, R.
AU - Yang, Z.
N1 - Publisher Copyright:
© 2015 Owned by the authors, published by EDP Sciences.
PY - 2015/1/23
Y1 - 2015/1/23
N2 - We report on the opportunities for spin physics and Transverse-Momentum Dependent distribution (TMD) studies at a future multi-purpose fixed-target experiment using the proton or lead ion LHC beams extracted by a bent crystal. The LHC multi-TeV beams allow for the most energetic fixed-target experiments ever performed, opening new domains of particle and nuclear physics and complementing that of collider physics, in particular that of RHIC and the EIC projects. The luminosity achievable with AFTER@LHC using typical targets would surpass that of RHIC by more that 3 orders of magnitude in a similar energy region. In unpolarised proton-proton collisions, AFTER@LHC allows for measurements of TMDs such as the Boer-Mulders quark distributions, the distribution of unpolarised and linearly polarised gluons in unpolarised protons. Using the polarisation of hydrogen and nuclear targets, one can measure transverse single-spin asymmetries of quark and gluon sensitive probes, such as, respectively, Drell-Yan pair and quarkonium production. The fixed-target mode has the advantage to allow for measurements in the target-rapidity region, namely at large x in the polarised nucleon. Overall, this allows for an ambitious spin program which we outline here.
AB - We report on the opportunities for spin physics and Transverse-Momentum Dependent distribution (TMD) studies at a future multi-purpose fixed-target experiment using the proton or lead ion LHC beams extracted by a bent crystal. The LHC multi-TeV beams allow for the most energetic fixed-target experiments ever performed, opening new domains of particle and nuclear physics and complementing that of collider physics, in particular that of RHIC and the EIC projects. The luminosity achievable with AFTER@LHC using typical targets would surpass that of RHIC by more that 3 orders of magnitude in a similar energy region. In unpolarised proton-proton collisions, AFTER@LHC allows for measurements of TMDs such as the Boer-Mulders quark distributions, the distribution of unpolarised and linearly polarised gluons in unpolarised protons. Using the polarisation of hydrogen and nuclear targets, one can measure transverse single-spin asymmetries of quark and gluon sensitive probes, such as, respectively, Drell-Yan pair and quarkonium production. The fixed-target mode has the advantage to allow for measurements in the target-rapidity region, namely at large x in the polarised nucleon. Overall, this allows for an ambitious spin program which we outline here.
U2 - 10.1051/epjconf/20158502038
DO - 10.1051/epjconf/20158502038
M3 - Conference article
AN - SCOPUS:84921966149
SN - 2101-6275
VL - 85
JO - EPJ Web of Conferences
JF - EPJ Web of Conferences
M1 - 02038
T2 - 4th International Workshop on Transverse Polarisation Phenomena in Hard Processes, TRANSVERSITY 2014
Y2 - 9 June 2014 through 13 June 2014
ER -