EPJ Web Conf.
Volume 208, 2019ISVHECRI 2018 - XX International Symposium on Very High Energy Cosmic Ray Interactions
|Number of page(s)||4|
|Published online||10 May 2019|
Transverse single spin asymmetry for very forward π0 production in polarized proton-proton collisions at √s = 510 GeV
Department of Physics, Korea University, Seoul, South Korea
2 RIKEN Nishina Center for Accelerator-Based Science, Saitama, Japan
3 RIKEN BNL Research Center, Brookhaven National Laboratory, New York, USA
4 Department of Physics, Seoul National University, Seoul, South Korea
5 Japan Atomic Energy Agency, Ibaraki, Japan
6 Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Japan
7 Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya, Japan
8 Institute for Cosmic Ray Research, University of Tokyo, Kashiwa, Chiba, Japan
9 RISE, Waseda University, Shinjuku, Tokyo, Japan
10 Graduate School of Science, Nagoya University, Nagoya, Japan
11 Tokushima University, Tokushima, Japan
12 INFN Section of Florence, Florence, Italy
13 INFN Section of Catania, Italy
14 University of Catania, Catania, Italy
15 University of Florence, Florence, Italy
* e-mail: email@example.com
Published online: 10 May 2019
Transverse single spin asymmetry, AN, of very forward π0 production from polarized p + p collisions provides new information toward an understanding of its production mechanism. AN of forward π0 in the pseudorapidity region of 3 < η < 4 has been described by the partonic structure of the proton in the perturbative QCD framework. However, recent data indicates a potential contribution from not only partonic but also diffractive interactions. In order to provide a new insight on the origin of the AN, we measured the very forward π0 production in the pseudorapidity region of 6 < η from √s = 510 GeV polarized p + p collisions at RHIC in 2017. We report our measurement of the very forward π0 over the transverse momentum range of 0 < pT < 1 GeV/c and the preliminary result.
© The Authors, published by EDP Sciences, 2019
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