Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Intermediate mass dimuons in NA38/NA50
Autore:
Scomparin, E; Abreu, MC; Alessandro, B; Alexa, C; Amaldi, R; Astruc, J; Atayan, M; Baglin, C; Baldit, A; Bedjidian, M; Bellaiche, F; Beole, S; Boldea, V; Bordalo, P; Bussiere, A; Capony, V; Casagrande, L; Castor, J; Chambon, T; Chaurand, B; Chevrot, I; Cheynis, B; Chiavassa, E; Cicalo, C; Comets, MP; Constantinescu, S; Cruz, J; De Falco, A; De Marco, N; Dellacasa, G; Devaux, A; Dita, S; Drapier, O; Espagnon, B; Fargeix, J; Filippov, SN; Fleuret, F; Force, P; Gallio, M; Gavrilov, YK; Gerschel, C; Giubellino, P; Golubeva, MB; Gonin, M; Grigorian, AA; Grossiord, JY; Guber, FF; Guichard, A; Gulkanyan, H; Hakobyan, R; Haroutunian, R; Idzik, M; Jouan, D; Karavitcheva, TL; Kluberg, L; Kurepin, AB; Le Bornec, Y; Lourenco, C; Mac Cormick, M; Macciotta, P; Marzari-Chiesa, A; Masera, M; Masoni, A; Mehrabyan, S; Mourgues, S; Musso, A; Ohlsson-Malek, F; Petiau, P; Piccotti, A; Pizzi, JR; da Silva, WLP; Puddu, G; Quintans, C; Racca, C; Ramello, L; Ramos, S; Rato-Mendes, P; Riccati, L; Romana, A; Sartori, S; Saturnini, P; Scomparin, E; Serci, S; Shahoyan, R; Silva, S; Soave, C; Sonderegger, P; Tarrago, X; Temnikov, P; Topilskaya, NS; Usai, GL; Vale, C; Vercellin, E; Willis, N;
Indirizzi:
CERN, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23CERN, CH-1211 Geneva 23, Switzerland IN2P3, LAPP, CNRS, F-74941 Annecy Le Vieux, France IN2P3 Annecy Le VieuxFrance F-74941 RS, F-74941 Annecy Le Vieux, France Univ Blaise Pascal, LPC, F-63170 Clermont Ferrand, France Univ Blaise Pascal Clermont Ferrand France F-63170 rmont Ferrand, France IN2P3, CNRS, F-63170 Clermont Ferrand, France IN2P3 Clermont Ferrand France F-63170 , F-63170 Clermont Ferrand, France IFA, R-76900 Bucharest, Romania IFA Bucharest Romania R-76900IFA, R-76900 Bucharest, Romania Univ Cagliari, Ist Nazl Fis Nucl, I-09042 Monserrato, Italy Univ CagliariMonserrato Italy I-09042 s Nucl, I-09042 Monserrato, Italy LIP, P-1000 Lisbon, Portugal LIP Lisbon Portugal P-1000LIP, P-1000 Lisbon, Portugal INR, Moscow 117312, Russia INR Moscow Russia 117312INR, Moscow 117312, Russia Univ Paris Sud, IPN, F-91406 Orsay, France Univ Paris Sud Orsay France F-91406 aris Sud, IPN, F-91406 Orsay, France IN2P3, CNRS, F-91406 Orsay, France IN2P3 Orsay France F-91406IN2P3, CNRS, F-91406 Orsay, France Ecole Polytech, LPNHE, F-91128 Palaiseau, France Ecole Polytech Palaiseau France F-91128 LPNHE, F-91128 Palaiseau, France IN2P3, CNRS, F-91128 Palaiseau, France IN2P3 Palaiseau France F-91128IN2P3, CNRS, F-91128 Palaiseau, France Univ Louis Pasteur Strasbourg 1, LPNHE, F-67037 Strasbourg, France Univ Louis Pasteur Strasbourg 1 Strasbourg France F-67037 sbourg, France IN2P3, CNRS, F-67037 Strasbourg, France IN2P3 Strasbourg France F-67037IN2P3, CNRS, F-67037 Strasbourg, France Univ Turin, Ist Nazl Fis Nucl, I-10125 Turin, Italy Univ Turin Turin Italy I-10125 , Ist Nazl Fis Nucl, I-10125 Turin, Italy Univ Lyon 1, IPN, F-69621 Villeurbanne, France Univ Lyon 1 Villeurbanne France F-69621 PN, F-69621 Villeurbanne, France IN2P3, CNRS, F-69621 Villeurbanne, France IN2P3 Villeurbanne France F-69621 P3, CNRS, F-69621 Villeurbanne, France YerPhI, AM-375036 Yerevan, Armenia YerPhI Yerevan Armenia AM-375036YerPhI, AM-375036 Yerevan, Armenia Univ Lisbon, FCUL, P-1699 Lisbon, Portugal Univ Lisbon Lisbon Portugal P-1699 Lisbon, FCUL, P-1699 Lisbon, Portugal Univ Tecn Lisbon, Inst Super Tecn, P-1096 Lisbon, Portugal Univ Tecn Lisbon Lisbon Portugal P-1096 er Tecn, P-1096 Lisbon, Portugal Fac Sci 2, Dipartimento Sci & Tecnol Avanzate, Alessandria, Italy Fac Sci 2 Alessandria Italy o Sci & Tecnol Avanzate, Alessandria, Italy
Titolo Testata:
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
fascicolo: 2, volume: 25, anno: 1999,
pagine: 235 - 245
SICI:
0954-3899(199902)25:2<235:IMDIN>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
PB-PB INTERACTIONS; NUCLEAR-DEPENDENCE; 158 GEV/C; J/PSI;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Scomparin, E CERN, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23 , CH-1211 Geneva 23, Switzerland
Citazione:
E. Scomparin et al., "Intermediate mass dimuons in NA38/NA50", J PHYS G-NU, 25(2), 1999, pp. 235-245

Abstract

The NA38/NA50 experiments have measured, at the CERN SPS, the dimuon production in proton-nucleus and nucleus-nucleus collisions. In this paper it isshown that the mass continuum between the phi and the J/psi can be satisfactorily described, after having removed the combinatorial background due touncorrelated pi and K decays, as a sum of two contributions, namely the Drell-Yan process and the semi-leptonic decay of pairs of charmed mesons, whose mass shape in the acceptance of the experiment has been evaluated using PYTHIA. However, in order to describe the A-B (namely S-U and Pb-Pb) mass spectra, the dimuon yield from open charm decays, which in p-A collisions isfound to be consistent with direct open charm measurements from other CERNand FNAL experiments, has to be enhanced with respect to a linear extrapolation of p-A results. The size of the enhancement smoothly increases from peripheral S-U to central Pb-Pb interactions, reaching a factor similar to 3in central Pb-Pb collisions. The pr distributions of the events in the mass continuum are also compatible with the hypothesis of open charm enhancement in A-B collisions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 23:52:15