Single spin asymmetries of forward neutron production in polarized p+p and p+A collisions at sqrt(s)=200 GeV

Apr 12, 2016, 11:00 AM
15m
SR4a (DESY Hamburg)

SR4a

DESY Hamburg

Spin Physics WG6 Spin Physics

Speaker

Dr Kiyoshi Tanida (Japan Atomic Energy Agency)

Description

In high-energy hadron collisions, most energy goes into the forward region. However, particle production mechanisms in the forward region are not well understood as perturbative QCD is not applicable at small momentum transfers. We study single spin asymmetries (A_N) of forward neutron production in the PHENIX experiment using a transversely polarized proton beam. In 2015, we took data for p + A collisions for the first time with Au and Al beams at sqrt(s_NN)= 200 GeV and observed a surprising A dependence. The results will be presented in the conference together with discussions on possible mechanisms that could explain the A_N results of forward neutron production.

Primary author

Dr Kiyoshi Tanida (Japan Atomic Energy Agency)

Presentation materials