001187071 001__ 1187071
001187071 003__ SzGeCERN
001187071 005__ 20230315201139.0
001187071 0247_ $$2DOI$$a10.1140/epjc/s10052-009-0907-4
001187071 0248_ $$aoai:cds.cern.ch:1187071$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
001187071 035__ $$9arXiv$$aoai:arXiv.org:0906.5376
001187071 035__ $$9SPIRES$$a8323070
001187071 035__ $$9Inspire$$a808436
001187071 037__ $$9arXiv$$aarXiv:0906.5376$$cnucl-ex
001187071 041__ $$aeng
001187071 100__ $$aPrino, F.$$uTurin U.$$uINFN, Turin
001187071 245__ $$aJ/$\psi$ azimuthal anisotropy relative to the reaction plane in Pb-Pb collisions at 158 GeV per nucleon
001187071 269__ $$c01 Jul 2009
001187071 260__ $$c2009
001187071 300__ $$a6 p
001187071 300__ $$a6 p
001187071 500__ $$aComments: proceedings of HP08 conference
001187071 500__ $$9arXiv$$aproceedings of HP08 conference corrected a typo in one equation
001187071 520__ $$aThe J/$\psi$ azimuthal distribution relative to the reaction plane has been measured by the NA50 experiment in Pb-Pb collisions at 158 GeV/nucleon. Various physical mechanisms related to charmonium dissociation in the medium created in the heavy ion collision are expected to introduce an anisotropy in the azimuthal distribution of the observed J/$\psi$ mesons at SPS energies. Hence, the measurement of J/$\psi$ elliptic anisotropy, quantified by the Fourier coefficient v$_2$ of the J/$\psi$ azimuthal distribution relative to the reaction plane, is an important tool to constrain theoretical models aimed at explaining the anomalous J/$\psi$ suppression observed in Pb-Pb collisions. We present the measured J/$\psi$ yields in different bins of azimuthal angle relative to the reaction plane, as well as the resulting values of the Fourier coefficient v$_{2}$ as a function of the collision centrality and of the J/$\psi$ transverse momentum. The reaction plane has been estimated from the azimuthal distribution of the neutral transverse energy detected in an electromagnetic calorimeter. The analysis has been performed on a data sample of about 100 000 events, distributed in five centrality or p$_{\rm T}$ sub-samples. The extracted v$_{2}$ values are significantly larger than zero for non-central collisions and are seen to increase with p$_{\rm T}$.
001187071 520__ $$9arXiv$$aThe J/$\psi$ azimuthal distribution relative to the reaction plane has been measured by the NA50 experiment in Pb-Pb collisions at 158 GeV/nucleon. Various physical mechanisms related to charmonium dissociation in the medium created in the heavy ion collision are expected to introduce an anisotropy in the azimuthal distribution of the observed J/$\psi$ mesons at SPS energies. Hence, the measurement of J/$\psi$ elliptic anisotropy, quantified by the Fourier coefficient v$_2$ of the J/$\psi$ azimuthal distribution relative to the reaction plane, is an important tool to constrain theoretical models aimed at explaining the anomalous J/$\psi$ suppression observed in Pb-Pb collisions. We present the measured J/$\psi$ yields in different bins of azimuthal angle relative to the reaction plane, as well as the resulting values of the Fourier coefficient v$_{2}$ as a function of the collision centrality and of the J/$\psi$ transverse momentum. The reaction plane has been estimated from the azimuthal distribution of the neutral transverse energy detected in an electromagnetic calorimeter. The analysis has been performed on a data sample of about 100 000 events, distributed in five centrality or p$_{\rm T}$ sub-samples. The extracted v$_{2}$ values are significantly larger than zero for non-central collisions and are seen to increase with p$_{\rm T}$.
001187071 540__ $$barXiv$$uhttp://arxiv.org/licenses/nonexclusive-distrib/1.0/
001187071 595__ $$agiva
001187071 595__ $$aLANL EDS
001187071 595__ $$aOA
001187071 65017 $$2arXiv$$aNuclear Physics - Experiment
001187071 693__ $$aCERN SPS$$eNA50
001187071 690C_ $$aARTICLE
001187071 690C_ $$aCERN
001187071 695__ $$9LANL EDS$$anucl-ex
001187071 700__ $$aAlessandro, B.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aAlexa, C.$$uBucharest, IFIN-HH
001187071 700__ $$aArnaldi, R.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aAtayan, M.$$uYerevan Phys. Inst.
001187071 700__ $$aBeole, S.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aBoldea, V.$$uBucharest, IFIN-HH
001187071 700__ $$aBordalo, P.$$uLIP, Lisbon
001187071 700__ $$aBorges, G.$$uLIP, Lisbon
001187071 700__ $$aCastanier, C.$$uClermont-Ferrand U.
001187071 700__ $$aCastor, J.$$uClermont-Ferrand U.
001187071 700__ $$aChaurand, B.$$uEcole Polytechnique$$uOrsay, IPN
001187071 700__ $$aCheynis, B.$$uLyon, IPN
001187071 700__ $$aChiavassa, E.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aCicalo, C.$$uCagliari U.$$uINFN, Cagliari
001187071 700__ $$aComets, M.P.$$uOrsay, IPN
001187071 700__ $$aConstantinescu, S.$$uBucharest, IFIN-HH
001187071 700__ $$aCortese, P.$$uTurin U., Alessandria$$uINFN, Turin
001187071 700__ $$aDe Falco, A.$$uCagliari U.$$uINFN, Cagliari
001187071 700__ $$aDe Marco, N.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aDellacasa, G.$$uTurin U., Alessandria$$uINFN, Turin
001187071 700__ $$aDevaux, A.$$uClermont-Ferrand U.
001187071 700__ $$aDita, S.$$uBucharest, IFIN-HH
001187071 700__ $$aFargeix, J.$$uClermont-Ferrand U.
001187071 700__ $$aForce, P.$$uClermont-Ferrand U.
001187071 700__ $$aGallio, M.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aGerschel, C.$$uOrsay, IPN
001187071 700__ $$aGiubellino, P.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aGolubeva, M.B.$$uMoscow, INR
001187071 700__ $$aGrigoryan, A.A.$$uYerevan Phys. Inst.
001187071 700__ $$aGrigoryan, S.$$uYerevan Phys. Inst.
001187071 700__ $$aGuber, F.F.$$uMoscow, INR
001187071 700__ $$aGuichard, A.$$uLyon, IPN
001187071 700__ $$aGulkanyan, H.$$uYerevan Phys. Inst.
001187071 700__ $$aIdzik, M.$$uCracow, Inst. Computer Sci.
001187071 700__ $$aJouan, D.$$uOrsay, IPN
001187071 700__ $$aKaravicheva, T.L.$$uMoscow, INR
001187071 700__ $$aKluberg, L.$$uCERN$$uEcole Polytechnique$$uOrsay, IPN
001187071 700__ $$aKurepin, A.B.$$uMoscow, INR
001187071 700__ $$aLe Bornec, Y.$$uOrsay, IPN
001187071 700__ $$aLourenco, C.$$uCERN
001187071 700__ $$aMac Cormick, M.$$uOrsay, IPN
001187071 700__ $$aMarzari-Chiesa, A.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aMasera, M.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aMasoni, A.$$uCagliari U.$$uINFN, Cagliari
001187071 700__ $$aMonteno, M.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aMusso, A.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aPetiau, P.$$uEcole Polytechnique$$uOrsay, IPN
001187071 700__ $$aPiccotti, A.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aPizzi, J.R.$$uLyon, IPN
001187071 700__ $$aPuddu, G.$$uCagliari U.$$uINFN, Cagliari
001187071 700__ $$aQuintans, C.$$uLIP, Lisbon
001187071 700__ $$aRamello, L.$$uTurin U., Alessandria$$uINFN, Turin
001187071 700__ $$aRamos, S.$$uLIP, Lisbon
001187071 700__ $$aRiccati, L.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aSantos, H.$$uLIP, Lisbon
001187071 700__ $$aSaturnini, P.$$uClermont-Ferrand U.
001187071 700__ $$aScomparin, E.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aSerci, S.$$uCagliari U.$$uINFN, Cagliari
001187071 700__ $$aShahoyan, R.$$uLIP, Lisbon
001187071 700__ $$aSigaudo, F.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aSitta, M.$$uTurin U., Alessandria$$uINFN, Turin
001187071 700__ $$aSonderegger, P.$$uCERN
001187071 700__ $$aTarrago, X.$$uOrsay, IPN
001187071 700__ $$aTopilskaya, N.S.$$uMoscow, INR
001187071 700__ $$aUsai, G.L.$$uCagliari U.$$uINFN, Cagliari
001187071 700__ $$aVercellin, E.$$uTurin U.$$uINFN, Turin
001187071 700__ $$aVillatte, L.$$uOrsay, IPN
001187071 700__ $$aWillis, N.$$uOrsay, IPN
001187071 700__ $$aWu, T.$$uOrsay, IPN
001187071 710__ $$gon behalf of the NA50 Collaboration
001187071 710__ $$5PH-EP
001187071 773__ $$c853-858$$n4$$pEur. Phys. J. C$$v61$$y2009
001187071 8564_ $$uhttp://arxiv.org/pdf/0906.5376.pdf$$yPreprint
001187071 8564_ $$82437210$$s347876$$uhttp://cds.cern.ch/record/1187071/files/10052_2009_907_OnlinePDF.pdf
001187071 8564_ $$82437211$$s141891$$uhttp://cds.cern.ch/record/1187071/files/arXiv:0906.5376.pdf
001187071 901__ $$uCERN
001187071 916__ $$sn$$w200926$$ya2009
001187071 960__ $$a13
001187071 961__ $$c20100902$$h1122$$lCER01$$x20090701
001187071 963__ $$aPUBLIC
001187071 962__ $$b1044045$$k853-858$$nisladelatoja20080608
001187071 970__ $$a002829366CER
001187071 980__ $$aARTICLE
001187071 980__ $$aConferencePaper