J/$\psi$ suppression in In-In collisions at 158 GeV/nucleon

R. Arnaldi; NA60 Collaboration R. Arnaldi; R. Averbeck; K. Banicz; J. Castor; B. Chaurand; C. Cicalo'; A. Colla; P. Cortese; S. Damjanovic; A. David; A. DeFalco; A. Devaux; A. Drees; L. Ducroux; H. En'yo; A. Ferretti; M. Floris; A. Forster; P. Force; N. Guettet; A. Guichard; H. Gulkanian; J. Heuser; M. Keil; L. Kluberg; C. Lourenco; J. Lozano; F. Manso; A. Masoni; P. Martins; A. Neves; H. Ohnishi; C. Oppedisano; P. Parracho; P. Pillot; G. Puddu; E. Radermacher; P. Ramalhete; P. Rosinsky; E. Scomparin; J. Seixas; S. Serci; R. Shahoyan; P. Sonderegger; H. J. Specht; R. Tieulent; G. Usai; R. Veenhof; H. K. Wohri

doi:10.1016/j.nuclphysa.2006.11.081

J/$\psi$ suppression in In-In collisions at 158 GeV/nucleon

Nuclear Experiment 2008-11-26 v1

Authors: R. Arnaldi , NA60 Collaboration R. Arnaldi , R. Averbeck , K. Banicz , J. Castor , B. Chaurand , C. Cicalo' , A. Colla , P. Cortese , S. Damjanovic , A. David , A. DeFalco , A. Devaux , A. Drees , L. Ducroux , H. En'yo , A. Ferretti , M. Floris , A. Forster , P. Force , N. Guettet , A. Guichard , H. Gulkanian , J. Heuser , M. Keil , L. Kluberg , C. Lourenco , J. Lozano , F. Manso , A. Masoni , P. Martins , A. Neves , H. Ohnishi , C. Oppedisano , P. Parracho , P. Pillot , G. Puddu , E. Radermacher , P. Ramalhete , P. Rosinsky , E. Scomparin , J. Seixas , S. Serci , R. Shahoyan , P. Sonderegger , H. J. Specht , R. Tieulent , G. Usai , R. Veenhof , H. K. Wohri

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Abstract

The NA60 experiment has studied J/ $\psi$ production in Indium-Indium collisions at 158 A $\cdot$ GeV. In this paper we present an updated set of results obtained with the complete set of available statistics and an improved alignment of the vertex tracker. The centrality dependence of the J/ $\psi$ production, obtained with an analysis technique based only on the J/ $\psi$ sample, indicates that a suppression beyond that induced by nuclear absorption is present in In-In collisions, setting in at $\sim$ 80 participant nucleons. A first study of the systematic errors related with this measurement is discussed. We also present preliminary results on the J/ $\psi$ azimuthal distributions.

Keywords

j/psi suppression in-in collisions na60 nuclear absorption centrality dependence azimuthal distribution

Cite

@article{arxiv.nucl-ex/0701033,
  title  = {J/$\psi$ suppression in In-In collisions at 158 GeV/nucleon},
  author = {R. Arnaldi and NA60 Collaboration R. Arnaldi and R. Averbeck and K. Banicz and J. Castor and B. Chaurand and C. Cicalo' and A. Colla and P. Cortese and S. Damjanovic and A. David and A. DeFalco and A. Devaux and A. Drees and L. Ducroux and H. En'yo and A. Ferretti and M. Floris and A. Forster and P. Force and N. Guettet and A. Guichard and H. Gulkanian and J. Heuser and M. Keil and L. Kluberg and C. Lourenco and J. Lozano and F. Manso and A. Masoni and P. Martins and A. Neves and H. Ohnishi and C. Oppedisano and P. Parracho and P. Pillot and G. Puddu and E. Radermacher and P. Ramalhete and P. Rosinsky and E. Scomparin and J. Seixas and S. Serci and R. Shahoyan and P. Sonderegger and H. J. Specht and R. Tieulent and G. Usai and R. Veenhof and H. K. Wohri},
  journal= {arXiv preprint arXiv:nucl-ex/0701033},
  year   = {2008}
}

Comments

8 pages, 3 figures, proceedings of Hard Probes 2006 International Conference

J/$\psi$ suppression in In-In collisions at 158 GeV/nucleon

Abstract

Keywords

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