Skip to Main Content (Press Enter)

Logo UNITO
  • ×
  • Home
  • Pubblicazioni
  • Progetti
  • Persone
  • Competenze
  • Settori
  • Strutture
  • Terza Missione

UNI-FIND
Logo UNITO

|

UNI-FIND

unito.it
  • ×
  • Home
  • Pubblicazioni
  • Progetti
  • Persone
  • Competenze
  • Settori
  • Strutture
  • Terza Missione
  1. Pubblicazioni

Evidence for radial flow of thermal dileptons in high-energy nuclear collisions

Articolo
Data di Pubblicazione:
2008
Abstract:
The NA60 experiment at the CERN SPS has studied low-mass dimuon production in 158A GeV In-In collisions. An excess of pairs above the known meson decays has been reported before. We now present precision results on the associated transverse momentum spectra. The slope parameter Teff extracted from the spectra rises with dimuon mass up to the rho, followed by a sudden decline above. While the initial rise is consistent with the expectations for radial flow of a hadronic decay source, the decline signals a transition to an emission source with much smaller flow. This may well represent the first direct evidence for thermal radiation of partonic origin in nuclear collisions.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
R. Arnaldi;1 K. Banicz;2;3 J. Castor;4 B. Chaurand;5 C. Cicalò;6 A. Colla;1 P. Cortese;1 S. Damjanovic;2;3 A. David;2;7 A. de Falco;6 A. Devaux;4 L. Ducroux;8 H. En'yo;9 J. Fargeix;4 A. Ferretti;1 M. Floris;6 A. Förster;2 P. Force;4 N. Guettet;2;4 A. Guichard;8 H. Gulkanian;10 J. M. Heuser;9 M. Keil;2;7 L. Kluberg;2;5 C. Lourenço;2 J. Lozano;7 F. Manso;4 P. Martins;2;7 A. Masoni;6 A. Neves;7 H. Ohnishi;9 C. Oppedisano;1 P. Parracho;2 P. Pillot;8 T. Poghosyan;10 G. Puddu;6 E. Radermacher;2 P. Ramalhete;2 P. Rosinsky;2 E. Scomparin;1 J. Seixas;7 S. Serci;6 R. Shahoyan;2;7 P. Sonderegger;7 H. J. Specht;3 R. Tieulent;8 G. Usai;6 R. Veenhof;2 and H. K. Wöhri6;
Autori di Ateneo:
FERRETTI Alessandro
Link alla scheda completa:
https://iris.unito.it/handle/2318/49161
Pubblicato in:
PHYSICAL REVIEW LETTERS
Journal
  • Utilizzo dei cookie

Realizzato con VIVO | Designed by Cineca | 25.6.1.0