https://doi.org/10.1051/epjconf/202531605003
Energy dependence of ϕ(1020) meson production in nucleus-nucleus collisions at the CERN SPS
H. Niewodniczánski Institute of Nuclear Physics, PAS, Radzikowskiego 152, 31-342 Kraków, Poland
* e-mail: lukasz.rozplochowski@ifj.edu.pl
Published online: 27 January 2025
This paper presents preliminary results from the NA61/SHINE experiment on ϕ meson production in central Ar+Sc collisions at beam momenta of 150A, 75A, and 40A GeV/c (corresponding to √sNN, and 8.8 GeV, respectively). These results include double differential distributions in rapidity (y) and transverse momentum (pT), as well as pT -integrated rapidity distributions and total ϕ yields. Additionally, the widths of the rapidity distributions of ϕ and ϕ/π yield ratios are compared to those from Pb+Pb and p+p reactions. Notably, this work represents the first-ever measurements of ϕ production in a mid-sized system at SPS energies.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
