A comparative measurement of $\varphi \to K^{+}{K}^{-}$ and $\varphi \to {\mu }^{+}{\mu }^{-}$ in In-In collisions at the CERN SPS

Abstract

The NA60 experiment at the CERN SPS has studied $\varphi$ meson production in In-In collisions at 158A GeV via both the $K^{+}{K}^{-}$ and the ${\mu }^{+}{\mu }^{-}$ decay channels. The yields and inverse slope parameters of the $m_T$ spectra observed in the two channels are compatible within errors, different from the large discrepancies seen in Pb-Pb collisions between the hadronic (NA49) and dimuon (NA50) decay channels. Possible physics implications are discussed.

References in corpus (12)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Methods for analyzing anisotropic flow in relativistic nuclear collisions
• Phi meson production in Au+Au and p+p collisions at sqrt (s)=200 GeV
• Modification of the $\varphi$-meson spectrum in nuclear matter
• Phi meson production in relativistic heavy ion collisions
• System-size dependence of strangeness production in nucleus-nucleus collisions at sqrt{s_{NN}}=17.3 GeV
• Rescattering of Vector Meson Daughters in High Energy Heavy Ion Collisions
• Leptonic and charged kaon decay modes of the $\varphi$ meson measured in heavy-ion collisions at the CERN SPS
• What have we learned and want to learn from heavy ion collisions at CERN SPS?
• $\varphi$ Production in In-In Collisions at 158 AGeV
• Medium effects on phi decays to dilepton and kaon-antikaon pairs in relativistic heavy ion reactions

Cited by in corpus (5)

• Production of K${}^{\ast }$(892)${}^0$ and $\varphi$(1020) in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Light vector meson production in pp collisions at $\sqrt{s}$ = 7 TeV
• $\varphi$-meson production at forward rapidity in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV and in pp collisions at $\sqrt{s}$ = 2.76 TeV
• $\varphi$ meson production in $d$$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• $\varphi$ meson production at forward rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV