Physics case for a polarised target for AFTER@LHC

Abstract : We review a number of ideas put forward in favour of the use of a polarised target along with the proposed idea of a fixed-target experiment using the LHC beams -- AFTER@LHC. A number of recent studies have shown that single transverse-spin asymmetries (STSAs) are large enough to be precisely measured in the region accessible with AFTER@LHC, in particular as regards the Drell-Yan process as well as single-pion, isolated-photon and jet production. AFTER@LHC with a polarised target would also be the ideal experimental set-up to measure the gluon Sivers effect via a number of original quarkonium STSA studies. We discuss first figures-of-merit based on simulations for AFTER@LHC with a polarised target.
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http://hal.in2p3.fr/in2p3-01278864
Contributor : Emmanuelle Vernay <>
Submitted on : Thursday, February 25, 2016 - 8:34:52 AM
Last modification on : Tuesday, November 19, 2019 - 2:36:57 AM

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  • HAL Id : in2p3-01278864, version 1
  • ARXIV : 1602.06857

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J. P. Lansberg, M. Anselmino, R. Arnaldi, S. J. Brodsky, V. Chambert, et al.. Physics case for a polarised target for AFTER@LHC. International Workshop on Polarized Sources, Targets & Polarimetry (PSTP 2015), Sep 2015, Bochum, Germany. pp.042. ⟨in2p3-01278864⟩

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