Short-Lived Phi Mesons

Abstract

We use effective hadronic field theory to study in-medium properties of the $\varphi$ meson. The dominant decay channels $ϕ\toK^{+}K^{-}$ and $\varphi \to \pi \rho$ are modeled using an SU(3) chiral Lagrangian with normal and abnormal parities. The $\varphi$ self-energy is approximated to one-, two-, and even three-loop order in the strong coupling. Effects of modified spectral functions for $\pi$, $K$, $\rho$ and $\varphi$ are also included in the calculation. This allows us to study in-medium decay of phi mesons into (in-medium) kaon-pair daughters and (in-medium) $\pi \rho$ pairs. The results point to the possibility of rather short-lived $\varphi$'s, short enough to decay inside the fireball in relativistic heavy ion collisions. Implications relevant for the NA49 and NA50 experimental results, recently dubbed the ``$\varphi$ puzzle'', are discussed.

7 pages Latex, 4 figures, Talk presented at Hot Quarks 2004, July 18-24, 2004, Taos Valley, NM, USA

References in corpus (7)

• Hadronic interactions of the J/psi
• Collision rates for $\bboxρ$, $\bboxω$ and $\bboxϕ$ mesons at nonzero temperature
• Phi meson production in relativistic heavy ion collisions
• Phi meson propagation in a hot hadronic gas
• Properties of the phi meson at finite temperature
• Phi Mesons from a Hadronic Fireball
• Collision broadening of rho meson in a dropping mass scenario

Cited by in corpus (14)

• Strange mesons in nuclear matter at finite temperature
• Formation and decay of hadronic resonances in the QGP
• $\varphi$ meson self-energy in nuclear matter from $\varphi N$ resonant interactions
• What do we learn from Resonance Production in Heavy Ion Collisions?
• $\varphi$ Production in In-In Collisions at 158 AGeV
• The Vector Probe in Heavy-Ion Reactions
• Role of phi decays for K- yields in relativistic heavy-ion collisions
• The phi meson at high temperatures and densities
• phi meson production in Au + Au collisions at sqrt{s_{NN} = 200 GeV
• $\varphi$ meson production in d + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Study of QGP signatures with the phi->K+K- signal in Pb-Pb ALICE events
• Hadronic Resonances in Heavy-Ion Collisions at ALICE
• In-medium properties of the phi meson with phi N resonant contributions
• Resonance production from jet fragmentation