Measurement of $\varphi$-meson production at forward rapidity in $p+p$ collisions at $\sqrt{s}=510\text{}\text{}\mathrm{GeV}$ and its energy dependence from $\sqrt{s}=200\text{}\text{}\mathrm{GeV}$ to 7 TeV

09 November 2018

Abstract: The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section of $\varphi \left(1020\right)$-meson production at forward rapidity in $p+p$ collisions at $\sqrt{s}=510\text{}\text{}\mathrm{GeV}$ via the dimuon decay channel. The partial cross section in the rapidity and ${p}_{T}$ ranges $1.2<|y|<2.2$ and $2<{p}_{T}<7\text{}\text{}\mathrm{GeV}/c$ is ${\sigma }_{\varphi }=\left[2.28±0.09\left(\mathrm{stat}\right)±0.14\left(\mathrm{syst}\right)±0.27\left(\mathrm{norm}\right)\right]×{10}^{-2}\text{}\text{}\mathrm{mb}$. The energy dependence of ${\sigma }_{\varphi }$ ($1.2<|y|<2.2,2<{p}_{T}<5\text{}\text{}\mathrm{GeV}/c$) is studied using the PHENIX measurements at $\sqrt{s}=200$ and 510 GeV and the Large Hadron Collider measurements at $\sqrt{s}=2.76$ and 7 TeV. The experimental results are compared to various event generator predictions (pythia6, pythia8, phojet, ampt, epos3, and epos-lhc).

Published in: Physical Review D 98 (2018)
DOI: 10.1103/PhysRevD.98.092006
arXiv: 1710.01656

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