<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:math>Production in Indium-Indium Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>158</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi><mml:mo>/</mml:mo><mml:mtext mathvariant="normal">Nucleon</mml:mtext></mml:math>

R. Arnaldi; K. Banicz; J. Castor; B. Chaurand; C. Cicalò; A. Colla; P. Cortese; S. Damjanović; A. David; A. de Falco; A. Devaux; L. Ducroux; H. En’yo; J. Fargeix; A. Ferretti; M. Floris; A. Förster; P. Force; N. Guettet; A. Guichard; H. Gulkanian; X. He; M. Keil; L. Kluberg; C. Lourenço; J. Lozano; F. Manso; P. Martins; A. Masoni; A. Neves; H. Ohnìshì; C. Oppedisano; P. G. Ferreira Parracho; P. Pillot; T. Poghosyan; G. Puddu; E. Radermacher; P. Ramalhete; P. Rosinský; E. Scomparin; J. Seixas; S. Serci; R. Shahoyan; P. Sonderegger; H.J. Specht; R. Tieulent; G. L. Usaı́; R. Veenhof; H. K. Wöhri

doi:10.1103/physrevlett.99.132302

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:math>Production in Indium-Indium Collisions at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mn>158</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>GeV</mml:mi><mml:mo>/</mml:mo><mml:mtext mathvariant="normal">Nucleon</mml:mtext></mml:math>

R. Arnaldi(Istituto Nazionale di Fisica Nucleare, Sezione di Torino), K. Banicz(Heidelberg University), J. Castor(Centre National de la Recherche Scientifique), B. Chaurand(Centre National de la Recherche Scientifique), C. Cicalò(University of Cagliari), A. Colla(Istituto Nazionale di Fisica Nucleare, Sezione di Torino), P. Cortese(Istituto Nazionale di Fisica Nucleare, Sezione di Torino), S. Damjanović(Heidelberg University), A. David(University of Lisbon), A. de Falco(University of Cagliari), A. Devaux(Centre National de la Recherche Scientifique), L. Ducroux(Université Claude Bernard Lyon 1), H. En’yo(RIKEN), J. Fargeix(Centre National de la Recherche Scientifique), A. Ferretti(Istituto Nazionale di Fisica Nucleare, Sezione di Torino), M. Floris(University of Cagliari), A. Förster(European Organization for Nuclear Research), P. Force(Centre National de la Recherche Scientifique), N. Guettet(Centre National de la Recherche Scientifique), A. Guichard(Université Claude Bernard Lyon 1), H. Gulkanian(A. Alikhanyan National Laboratory), X. He(RIKEN), M. Keil(University of Lisbon), L. Kluberg(Centre National de la Recherche Scientifique), C. Lourenço(European Organization for Nuclear Research), J. Lozano(University of Lisbon), F. Manso(Centre National de la Recherche Scientifique), P. Martins(University of Lisbon), A. Masoni(University of Cagliari), A. Neves(University of Lisbon), H. Ohnìshì(RIKEN), C. Oppedisano(Istituto Nazionale di Fisica Nucleare, Sezione di Torino), P. G. Ferreira Parracho(European Organization for Nuclear Research), P. Pillot(Université Claude Bernard Lyon 1), T. Poghosyan(A. Alikhanyan National Laboratory), G. Puddu(University of Cagliari), E. Radermacher(European Organization for Nuclear Research), P. Ramalhete(European Organization for Nuclear Research), P. Rosinský(European Organization for Nuclear Research), E. Scomparin(Istituto Nazionale di Fisica Nucleare, Sezione di Torino), J. Seixas(University of Lisbon), S. Serci(University of Cagliari), R. Shahoyan(University of Lisbon), P. Sonderegger(University of Lisbon), H.J. Specht(Heidelberg University), R. Tieulent(Université Claude Bernard Lyon 1), G. L. Usaı́(University of Cagliari), R. Veenhof(University of Lisbon), H. K. Wöhri(University of Lisbon)

Physical Review Letters

September 26, 2007

10.1103/physrevlett.99.132302

Cited by 124Open Access

Full Text

Abstract

The NA60 experiment studies muon pair production at the CERN Super Proton Synchrotron. 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 approximately 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.

Related Papers

No related papers found

Powered by citation graph analysis