N
N. Constans
Researcher at École Polytechnique
Publications - 26
Citations - 932
N. Constans is an academic researcher from École Polytechnique. The author has contributed to research in topics: Nucleon & Meson. The author has an hindex of 11, co-authored 26 publications receiving 896 citations.
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Journal ArticleDOI
Evidence for deconfinement of quarks and gluons from the J/ψ suppression pattern measured in Pb-Pb collisions at the CERN-SPS
M.C. Abreu,Bruno Alessandro,C. Alexa,R. Arnaldi,M. Atayan,C. Baglin,A. Baldit,M. Bedjidian,S. Beolè,V. Boldea,P. Bordalo,A. Bussiere,L. Capelli,L. Casagrande,J. Castor,T. Chambon,B. Chaurand,I. Chevrot,B. Cheynis,E. Chiavassa,C. Cicalò,M. P. Comets,N. Constans,S. Constantinescu,João Cruz,A. De Falco,G. Dellacasa,N. De Marco,A. Devaux,S. Dita,O. Drapier,Laurent Ducroux,B. Espagnon,J. Fargeix,P. Force,M. Gallio,Yu.K. Gavrilov,C. Gerschel,Paolo Giubellino,M.B. Golubeva,M. Gonin,A.A. Grigorian,J.Y. Grossiord,F.F. Guber,A. Guichard,H. Gulkanyan,R. Hakobyan,R. Haroutunian,Marek Idzik,D. Jouan,T.L. Karavitcheva,L. Kluberg,A. B. Kurepin,Y. Le Bornec,C. Lourenço,M. Mac Cormick,P. Macciotta,A. Marzari-Chiesa,M. Masera,A. Masoni,S Mehrabyan,M. Monteno,S. Mourgues,A. Musso,P. Petiau,A. Piccotti,J.-R. Pizzi,F. Prino,G. Puddu,C. Quintans,L. Ramello,S. Ramos,P. Rato-Mendes,L. Riccati,A. Romana,I. Ropotar,P. Saturnini,Enrico Scomparin,S. Serci,R. Shahoyan,S. Silva,M. Sitta,C. Soave,P. Sonderegger,X. Tarrago,N.S. Topilskaya,G.L. Usai,E. Vercellin,L. Villatte,N. Willis +89 more
TL;DR: The analysis of the data collected by the NA50 experiment in 1998, reported in this paper, extends and clarifies the pattern of the previously observed J/ψ anomalous suppression.
Journal ArticleDOI
Observation of a threshold effect in the anomalous J/ψ suppression
M.C. Abreu,Bruno Alessandro,Calin Alexa,Roberta Arnaldi,J. Astruc,M. Atayan,C. Baglin,A. Baldit,M. Bedjidian,F. Bellaiche,Stefania Beole,V. Boldea,P. Bordalo,A. Bussiere,V. Capony,L. Casagrande,J. Castor,T. Chambon,B. Chaurand,I. Chevrot,Brigitte Cheynis,E. Chiavassa,Corrado Cicalo,M. P. Comets,N. Constans,Serban Constantinescu,João Cruz,A. De Falco,G. Dellacasa,N. De Marco,A. Devaux,Sanda Dita,O. Drapier,B. Espagnon,J. Fargeix,S. Filippov,François Fleuret,P. Force,Mauro Gallio,Lau Gatignon,Y.K. Gavrilov,C. Gerschel,Paolo Giubellino,M.B. Golubeva,M. Gonin,A.A. Grigorian,J.-Y. Grossiord,F.F. Guber,A. Guichard,H.R. Gulkanyan,R. Hakobyan,R. Haroutunian,Marek Idzik,D. Jouan,T.L. Karavitcheva,L. Kluberg,Alexey Kurepin,Y. Le Bornec,Carlos Lourenco,L. Luquin,M. Mac Cormick,P. Macciotta,A. Marzari-Chiesa,Massimo Masera,A. Masoni,S Mehrabyan,Marco Monteno,S. Mourgues,A. Musso,F. Ohlsson-Malek,P. Petiau,A. Piccotti,J.-R. Pizzi,W.L. Prado da Silva,F. Prino,G. Puddu,C. Quintans,C. Racca,Luciano Ramello,S. Ramos,P. Rato-Mendes,L. Riccati,A. Romana,I. Ropotar,P. Saturnini,Enrico Scomparin,Sergio Serci,Ruben Shahoyan,S. Silva,Mario Sitta,C. Soave,P. Sonderegger,X. Tarrago,Petar Temnikov,N.S. Topilskaya,G. L. Usai,Ermanno Vercellin,N. Willis +97 more
TL;DR: In this paper, a phase transition from ordinary nuclear matter to a state of deconfined quarks and gluons as predicted by lattice QCD calculations was found in central Pb-Pb collisions.
Journal ArticleDOI
Charmonium production and nuclear absorption in p-A interactions at 450 GeV
Bruno Alessandro,Calin Alexa,Roberta Arnaldi,M. Atayan,C. Baglin,A. Baldit,S. Beole,V. Boldea,P. Bordalo,S. Borenstein,C. Borges,A. Bussiere,L. Capelli,C. Castanier,J. Castor,B. Chaurand,Brigitte Cheynis,E. Chiavassa,Corrado Cicalo,T. Claudino,M.P. Comets,N. Constans,Serban Constantinescu,Pietro Cortese,João Cruz,A. De Falco,N. De Marco,G. Dellacasa,A. Devaux,Sanda Dita,O. Drapier,Bruno Espagnon,J. Fargeix,P. Force,Mauro Gallio,C. Gerschel,Paolo Giubellino,M.B. Golubeva,M. Gonin,A.A. Grigorian,S. Grigorian,J.-Y. Grossiord,F.F. Guber,A. Guichard,H.R. Gulkanyan,Marek Idzik,D. Jouan,T.L. Karavitcheva,L. Kluberg,Alexey Kurepin,Y. Le Bornec,Carlos Lourenco,P. Macciotta,M. Mac Cormick,A. Marzari-Chiesa,M. Masera,Alberto Masoni,Marco Monteno,A. Musso,P. Petiau,A. Picotti,J.-R. Pizzi,F. Prino,G. Puddu,C. Quintans,Luciano Ramello,S. Ramos,P. Rato-Mendes,L. Riccati,A. Romana,Helena Santos,P. Saturnini,P. Scomparin,S. Serci,Ruben Shahoyan,F. Sigaudo,Mario Sitta,P. Sonderegger,X. Tarrago,N.S. Topilskaya,G. L. Usai,Ermanno Vercellin,L. Villatte,N. Willis +83 more
TL;DR: In this paper, the production of J/ψ and ψ � charmonium states in proton-nucleus interactions has been investigated by the NA50 experiment, at the CERN SPS.
Journal ArticleDOI
Transverse momentum distributions of J/ψ, ψ′, Drell–Yan and continuum dimuons produced in Pb–Pb interactions at the SPS
M.C. Abreu,Bruno Alessandro,C. Alexa,R. Arnaldi,M. Atayan,C. Baglin,A. Baldit,M. Bedjidian,F. Bellaiche,S. Beolè,V. Boldea,P. Bordalo,A. Bussiere,L. Capelli,V. Capony,L. Casagrande,J. Castor,T. Chambon,B. Chaurand,I. Chevrot,B. Cheynis,E. Chiavassa,C. Cicalò,M. P. Comets,N. Constans,S. Constantinescu,João Cruz,A. De Falco,G. Dellacasa,N. De Marco,A. Devaux,S. Dita,O. Drapier,Laurent Ducroux,B. Espagnon,J. Fargeix,P. Force,M. Gallio,Yu.K. Gavrilov,C. Gerschel,Paolo Giubellino,M.B. Golubeva,M. Gonin,A.A. Grigorian,J.Y. Grossiord,F.F. Guber,A. Guichard,H. Gulkanyan,R. Hakobyan,R. Haroutunian,Marek Idzik,D. Jouan,T.L. Karavitcheva,L. Kluberg,A. B. Kurepin,Y. Le Bornec,C. Lourenço,M. Mac Cormick,P. Macciotta,A. Marzari-Chiesa,M. Masera,A. Masoni,S Mehrabyan,Marco Monteno,S. Mourgues,A. Musso,F Ohlson-Malek,P. Petiau,A. Piccotti,J.-R. Pizzi,F. Prino,G. Puddu,C. Quintans,L. Ramello,S. Ramos,P. Rato-Mendes,L. Riccati,A. Romana,I. Ropotar,P. Saturnini,Enrico Scomparin,S. Serci,R. Shahoyan,S. Silva,Mario Sitta,C. Soave,P. Sonderegger,X. Tarrago,N.S. Topilskaya,G.L. Usai,E. Vercellin,L. Villatte,N. Willis +92 more
TL;DR: In particular, the dependence of these distributions on the centrality of the Pb-Pb collision was investigated in detail in this article, where the transverse momentum distributions of the \jpsi, \psip\ and dimuons in the mass continuum were investigated.
Journal ArticleDOI
φ production in Pb-Pb collisions at 158 GeV/c per nucleon incident momentum
Bruno Alessandro,Calin Alexa,Roberta Arnaldi,J. Astruc,M. Atayan,C. Baglin,A. Baldit,Stefania Beole,V. Boldea,P. Bordalo,G. Borges,A. Bussiere,L. Capelli,V. Caponi,C. Castanier,J. Castor,B. Chaurand,I. Chevrot,Brigitte Cheynis,E. Chiavassa,Corrado Cicalo,T. Claudino,M. P. Comets,N. Constans,Serban Constantinescu,Pietro Cortese,João Cruz,A. De Falco,N. De Marco,G. Dellacasa,A. Devaux,Sanda Dita,O. Drapier,Laurent Ducroux,B. Espagnon,J. Fargeix,P. Force,Mauro Gallio,Y.K. Gavrilov,C. Gerschel,Paolo Giubellino,M.B. Golubeva,M. Gonin,A.A. Grigorian,S. Grigoryan,J.-Y. Grossiord,F.F. Guber,A. Guichard,H.R. Gulkanyan,R. Hakobyan,Marek Idzik,D. Jouan,T.L. Karavitcheva,L. Kluberg,Alexey Kurepin,Y. Le Bornec,Carlos Lourenco,P. Macciotta,M. Mac Cormick,A. Marzari-Chiesa,Massimo Masera,A. Masoni,Marco Monteno,A. Musso,P. Petiau,A. Piccotti,J.-R. Pizzi,W.L. Prado da Silva,F Prino,G. Puddu,C. Quintans,Luciano Ramello,S. Ramos,P. Rato Mendes,L. Riccati,A. Romana,Helena Santos,P. Saturnini,Enrico Scalas,Enrico Scomparin,Sergio Serci,Ruben Shahoyan,F. Sigaudo,S. Silva,Mario Sitta,P. Sonderegger,X. Tarrago,N.S. Topilskaya,G. L. Usai,Ermanno Vercellin,L. Villatte,N. Willis +91 more
TL;DR: In this paper, the production of vector mesons φ, ρ and ω has been measured in Pb-Pb collisions at 158 −GeV/c per nucleon incident momentum at the CERN/SPS.