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Semi-central In-In collisions and Brown-Rho scaling

V. V. Skokov and V. D. Toneev
Phys. Rev. C 73, 021902(R) – Published 28 February 2006

Abstract

In connection with the claim made at the Quark Matter 2005 Conference that the Brown-Rho scaling is ruled out by NA60 data we consider dimuon production from semicentral In+In collisions in a full dynamical model. It is shown that if only a modification of the density-dependent ρ mass is allowed, the maximum of dimuon invariant mass spectra is only slightly below experimental one. The additional inclusion of the temperature-dependent modification factor shifts the spectrum maximum toward lower invariant masses making calculation results incompatible with data. A further study is needed to disentangle the BR dropping ρ-mass scaling and strong broadening.

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  • Received 5 October 2005

DOI:https://doi.org/10.1103/PhysRevC.73.021902

©2006 American Physical Society

Authors & Affiliations

V. V. Skokov* and V. D. Toneev

  • Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, RU-141980 Dubna, Russia

  • *Electronic address: vvskokov@theor.jinr.ru
  • Electronic address: toneev@theor.jinr.ru

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Issue

Vol. 73, Iss. 2 — February 2006

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