PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Cosmic-Ray Physics (Indirect, CRI)
Transverse single spin asymmetry measurement for very forward neutron production at the RHICf experiment
M. Kim
Full text: pdf
Pre-published on: July 25, 2023
Published on:
In the high-energy $p+p$ collisions, the fundamental processes of extensive air shower development and hence the origin of the ultra-high energy cosmic ray can be studied by measuring the cross section of the very forward particles. On the other hand, transverse single spin asymmetry ($A_{\scriptsize{\textrm{N}}}$) for very forward particle production is an unique tool to understand the spin-involved diffractive particle production mechanism. $A_{\scriptsize{\textrm{N}}}$ for very forward neutron production has been interpreted by an interference between $\pi$ (spin flip) and $a_1$ (spin non-flip) exchange. Since the neutron $A_{\scriptsize{\textrm{N}}}$ has been studied only in a narrow transverse momentum ($p_{\scriptsize{\textrm{T}}}$) range of $p_{\scriptsize{\textrm{T}}} < 0.4$ GeV/$c$, the RHICf experiment measured the neutron $A_{\scriptsize{\textrm{N}}}$ in a wide $p_{\scriptsize{\textrm{T}}}$ coverage up to $\sim$1 GeV/$c$ to test the validity of the $\pi$ and $a_1$ exchange model in the higher $p_{\scriptsize{\textrm{T}}}$ region. In this poster, we report our analysis status and result on the neutron $A_{\scriptsize{\textrm{N}}}$ measured by the RHICf experiment.
DOI: https://doi.org/10.22323/1.444.0525
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.