First results on angular distributions of thermal dileptons in nuclear collisions

R. Arnaldi , K. Banicz , K. Borer , J. Castor (1) , B. Chaurand (2) , W. M. Chen , C. Cicalo , A. Colla , P. Cortese , S. Damjanovic , A. David , A. de Falco , A. Devaux (1) , L. Ducroux (3) , H. En'Yo , J. Fargeix (1) , A. Ferretti , M. Floris , A. Foerster , P. Force (1) , N. Guettet (1) , A. Guichard (3) , H. Gulkanian , J. M. Heuser , M. Keil , L. Kluberg , Zhenyu Li , C. Lourenco , J. Lozano , F. Manso (1) , P. Martins , A. Masoni , A. Neves , H. Ohnishi , C. Oppedisano , P. Parracho , Philippe Pillot (3) , T. Poghosyan , G. Puddu , E. Radermacher , P. Ramalhete , P. Rosinsky , E. Scomparin , J. Seixas , S. Serci , R. Shahoyan , P. Sonderegger , H. J. Specht , R. Tieulent (3) , G. Usai , R. Veenhof , H. K. Woehri

1 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
2 LLR - Laboratoire Leprince-Ringuet
3 IPNL - Institut de Physique Nucléaire de Lyon

The NA60 experiment at the CERN SPS has studied dimuon production in 158A GeV In-In collisions. The strong excess of pairs above the known sources found in the complete mass region 0.2

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

R. Arnaldi, K. Banicz, K. Borer, J. Castor, B. Chaurand, et al.. First results on angular distributions of thermal dileptons in nuclear collisions. Physical Review Letters, 2009, 102, pp.222301. ⟨10.1103/PhysRevLett.102.222301⟩. ⟨in2p3-00373109⟩