Experimental collision study reports energy-dependent phi meson production in central argon-scandium collisions, highlighting particle dynamics across intermediate nuclear systems.
This paper presents preliminary results from the NA61/SHINE experiment on ϕ meson production in central Ar+Sc collisions at beam momenta of 150 A , 75 A , and 40 A GeV/ c (corresponding to √ s NN , 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.
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Ł. Rozpłochowski (2025) studied this question.
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