Speaker
Description
We review the physics opportunities [1] which are offered by a next generation and multi-purpose fixed-target experiment exploiting the LHC beams in order to study $pp$, $pd$ and $pA$ collisions at $\sqrt{s_{NN}} \sim 115$ GeV as well as Pb$p$ and Pb$A$ collisions at $\sqrt{s_{NN}} \sim 72$ GeV.
We propose two possible implementations, namely with an internal (polarised) gas target or with a "splitted" beam by a bent crystal which both provide typical instantaneous luminosities [1,2] for $pp$ and $pA$ collisions which surpass that of RHIC by more than 3 orders of magnitude and are comparable to those of the LHC collider mode.
We also discuss our most recent figures of merit [3,4,5] based on two already existing detector set-ups, the LHCb and the ALICE detectors.
References:
[1] S. J. Brodsky, F. Fleuret, C. Hadjidakis and J. P. Lansberg, Phys. Rept. 108 522 (2013) 239. For a complete list of references see http://after.in2p3.fr/after/index.php/Recent_published_ideas_in_favour_of_AFTER@LHC
[2] C. Barschel, P. Lenisa, A. Nass, E. Steffens. Adv.High Energy Phys. 2015 (2015) 463141.
[3] L. Massacrier, B. Trzeciak, F. Fleuret, C. Hadjidakis, D. Kikola, J.P. Lansberg, H.-S. Shao. Adv.High Energy Phys. 2015 (2015) 986348.
[4] B. Trzeciak, C. Da Silva, E.G. Ferreiro, C. Hadjidakis, D. Kikoła, J.P. Lansberg, L. Massacrier, J. Seixas, A. Uras, Z. Yang Few Body Syst. 58 (2017) 148
[5] D. Kikoła, M. G. Echevarria, C. Hadjidakis, J.P. Lansberg (Orsay, IPN), C. Lorcé, L. Massacrier, C. Marques Quintans, A. Signori, B. Trzeciak. Few Body Syst. 58 (2017) no.4, 139
