The dependence of the anomalous $J/\psi$ suppression on the number of participant nucleons - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physics Letters B Year : 2001

The dependence of the anomalous $J/\psi$ suppression on the number of participant nucleons

M C. Abreu
  • Function : Author
B. Alessandro
  • Function : Author
C. Alexa
  • Function : Author
R. Arnaldi
  • Function : Author
M. Atayan
  • Function : Author
S. Beole
  • Function : Author
V. Boldea
  • Function : Author
P. Bordalo
  • Function : Author
G. Borges
  • Function : Author
B. Cheynis
E. Chiavassa
  • Function : Author
C. Cicalo
  • Function : Author
T. Claudino
  • Function : Author
N. Constans
S. Constantinescu
  • Function : Author
P. Cortese
  • Function : Author
N. de Marco
  • Function : Author
A. de Falco
  • Function : Author
G. Dellacasa
  • Function : Author
S. Dita
  • Function : Author
O. Drapier
  • Function : Author
M. Gallio
  • Function : Author
K. Gavrilov Yu
  • Function : Author
P. Giubellino
  • Function : Author
M B. Golubeva
  • Function : Author
a A. Grigorian
  • Function : Author
S. Grigorian
  • Function : Author
J.-Y. Grossiord
  • Function : Author
F F. Guber
  • Function : Author
H R. Gulkanian
  • Function : Author
R. Hakobyan
  • Function : Author
M. Idzik
  • Function : Author
T L. Karavitcheva
  • Function : Author
a B. Kurepin
  • Function : Author
C. Lourenco
  • Function : Author
P. Macciotta
  • Function : Author
A. Marzari-Chiesa
  • Function : Author
M. Masera
  • Function : Author
A. Masoni
  • Function : Author
M. Monteno
  • Function : Author
A. Musso
  • Function : Author
A. Piccotti
  • Function : Author
F. Prino
  • Function : Author
G. Puddu
  • Function : Author
C. Quintans
  • Function : Author
S. Ramos
  • Function : Author
L. Ramello
  • Function : Author
P. Rato-Mendes
  • Function : Author
L. Riccati
  • Function : Author
H. Santos
  • Function : Author
  • PersonId : 829314
E. Scalas
  • Function : Author
E. Scomparin
  • Function : Author
S. Serci
  • Function : Author
R. Shahoyan
  • Function : Author
F. Sigaudo
  • Function : Author
S. Silva
  • Function : Author
M. Sitta
  • Function : Author
P. Sonderegger
  • Function : Author
N S. Topilskaya
  • Function : Author
G L. Usai
  • Function : Author
E. Vercellin
  • Function : Author

Abstract

The observation of an anomalous \jpsi\ suppression in \mbox{Pb-Pb} collisions by the NA50 collaboration can be considered as the most striking indication for the deconfinement of quarks and gluons at SPS energies. In this letter, we determine the \jpsi\ suppression pattern as a function of the forward hadronic energy \ezdc\ measured in a Zero Degree Calorimeter (ZDC). The direct connection between \ezdc\ and the geometry of the collision allows us to calculate, within a Glauber approach, the precise relation between the number of participant nucleons \npart\ and \ezdc. Then, we check if the experimental data can be better explained by a sudden or a smooth onset of the anomalous \jpsi\ suppression as a function of the number of participants.
Fichier principal
Vignette du fichier
democrite-00010537.pdf (178.54 Ko) Télécharger le fichier

Dates and versions

in2p3-00010537 , version 1 (04-12-2001)

Identifiers

Cite

M C. Abreu, B. Alessandro, C. Alexa, R. Arnaldi, M. Atayan, et al.. The dependence of the anomalous $J/\psi$ suppression on the number of participant nucleons. Physics Letters B, 2001, 521, pp.195-203. ⟨10.1016/S0370-2693(01)01225-4⟩. ⟨in2p3-00010537⟩
30 View
24 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More