Production of ρ + ω and φ in p-W and S-U collisions at 200 GeV/nucleon

  • M. C. Abreu
  • , C. Baglin
  • , A. Baldisseri
  • , A. Baldit
  • , M. Bedjidian
  • , P. Bordalo
  • , A. Bussière
  • , J. Castor
  • , T. Chambon
  • , B. Chaurand
  • , D. Contardo
  • , E. Descroix
  • , A. Devaux
  • , O. Drapier
  • , B. Espagnon
  • , J. Fargeix
  • , R. Ferreira
  • , P. Force
  • , J. Gago
  • , C. Gerschel
  • P. Gorodetzky, J. Y. Grossiord, A. Guichard, J. P. Guillaud, R. Haroutunian, D. Jouan, L. Kluberg, R. Kossakowski, G. Landaud, P. Liaud, C. Lourenço, R. Mazini, S. Papillon, L. Peralta, J. R. Pizzi, C. Racca, S. Ramos, A. Romana, S. Silva, P. Sonderegger, X. Tarrago, J. Varela

Research output: Contribution to journalArticlepeer-review

Abstract

The transverse mass differential cross-sections for the ρ + ω and φ resonances is obtained, in the central rapidity region, in p-W and S-U interactions at 200 GeV/nucleon. The measured ρ + ω and φ temperatures are ∼ 15% higher in S-U as compared to p-W collisions. The ratio of cross-sections times branching ratios into the dimuon channel Bφσφ/ (Bρσρ + Bωσω) is studied as a function of the energy density reached in the collision and of the dimuon transverse momentum. The measured ratio is 2 to 3 times larger in S-U than in p-W collisions and an enhancement is observed in S-U interactions with increasing energy density.

Original languageEnglish
Pages (from-to)239-243
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume368
Issue number3
DOIs
Publication statusPublished - 1 Feb 1996
Externally publishedYes

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