J/$\psi$ production in Indium-Indium collisions at 158 GeV/nucleon - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review Letters Year : 2007

J/$\psi$ production in Indium-Indium collisions at 158 GeV/nucleon

R. Arnaldi
  • Function : Author
K. Banicz
  • Function : Author
C. Cicalò
  • Function : Author
A. Colla
  • Function : Author
P. Cortese
  • Function : Author
S. Damjanovic
  • Function : Author
A. David
  • Function : Author
A. de Falco
  • Function : Author
H. En'Yo
  • Function : Author
A. Ferretti
  • Function : Author
M. Floris
  • Function : Author
A. Förster
  • Function : Author
N. Guettet
  • Function : Author
H. Gulkanyan
  • Function : Author
J.M. Heuser
  • Function : Author
M. Keil
  • Function : Author
C. Lourenço
  • Function : Author
J. Lozano
  • Function : Author
P. Martins
A. Masoni
  • Function : Author
A. Neves
  • Function : Author
H. Ohnishi
  • Function : Author
C. Oppedisano
  • Function : Author
P. Parracho
  • Function : Author
Philippe Pillot
T. Poghosyan
  • Function : Author
G. Puddu
  • Function : Author
E. Radermacher
  • Function : Author
P. Ramalhete
  • Function : Author
P. Rosinsky
  • Function : Author
E. Scomparin
  • Function : Author
J. Seixas
  • Function : Author
S. Serci
  • Function : Author
R. Shahoyan
  • Function : Author
P. Sonderegger
  • Function : Author
H.J. Specht
  • Function : Author
G. Usai
  • Function : Author
R. Veenhof
  • Function : Author
H. Wöhri
  • Function : Author

Abstract

The NA60 experiment studies muon pair production at the CERN SPS. In this letter we report on a precision measurement of J/psi in In-In collisions. We have studied the J/psi centrality distribution, and we have compared it with the one expected if absorption in cold nuclear matter were the only active suppression mechanism. For collisions involving more than ~80 participant nucleons, we find that an extra suppression is present. This result is in qualitative agreement with previous Pb-Pb measurements by the NA50 experiment, but no theoretical explanation is presently able to coherently describe both results.

Dates and versions

in2p3-00176311 , version 1 (03-10-2007)

Identifiers

Cite

R. Arnaldi, K. Banicz, B. Chaurand, C. Cicalò, A. Colla, et al.. J/$\psi$ production in Indium-Indium collisions at 158 GeV/nucleon. Physical Review Letters, 2007, 99, pp.132302. ⟨10.1103/PhysRevLett.99.132302⟩. ⟨in2p3-00176311⟩
10 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More