Studies of Transverse-Momentum-Dependent distributions with A Fixed-Target ExpeRiment using the LHC beams (AFTER@LHC)
| Autor: | Massacrier, L., Anselmino, M., Arnaldi, R., Brodsky, S. J., Chambert, V., Dunnen, W. den, Didelez, J. P., Genolini, B., Ferreiro, E. G., Fleuret, F., Gao, Y., Hadjidakis, C., Hrivnacova, I., Lansberg, J. P., Lorcé, C., Mikkelsen, R., Pisano, C., Rakotozafindrabe, A., Rosier, P., Schienbein, I., Schlegel, M., Scomparin, E., Trzeciak, B., Uggerhoj, U. I., Ulrich, R., Yang, Z. |
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| Rok vydání: | 2015 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1142/S2010194516601071 |
| Popis: | We report on the studies of Transverse-Momentum-Dependent distributions (TMDs) at a future fixed-target experiment --AFTER@LHC-- using the $p^+$ or Pb ion LHC beams, which would be the most energetic fixed-target experiment ever performed. AFTER@LHC opens new domains of particle and nuclear physics by complementing collider-mode experiments, in particular those of RHIC and the EIC projects. Both with an extracted beam by a bent crystal or with an internal gas target, the luminosity achieved by AFTER@LHC surpasses that of RHIC by up to 3 orders of magnitude. With an unpolarised target, it allows for measurements of TMDs such as the Boer-Mulders quark distributions and the distribution of unpolarised and linearly polarised gluons in unpolarised protons. Using polarised targets, one can access the quark and gluon Sivers TMDs through single transverse-spin asymmetries in Drell-Yan and quarkonium production. In terms of kinematics, the fixed-target mode combined with a detector covering $\eta_{\rm lab} \in [1,5]$ allows one to measure these asymmetries at large $x^\uparrow$ in the polarised nucleon. Comment: Symposium SPIN2014, Beijing |
| Databáze: | arXiv |
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