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Titolo:
Results on open charm from NA50
Autore:
Masera, M;
Indirizzi:
CERN, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23CERN, CH-1211 Geneva 23, Switzerland
Titolo Testata:
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
fascicolo: 3, volume: 27, anno: 2001,
pagine: 677 - 684
SICI:
0954-3899(200103)27:3<677:ROOCFN>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
CERN-SPS; COLLISIONS; DISTRIBUTIONS; DILEPTONS; DIMUON; MASSES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Masera, M CERN, CH-1211 Geneva 23, Switzerland CERN Geneva Switzerland 23 ERN, CH-1211 Geneva 23, Switzerland
Citazione:
M. Masera, "Results on open charm from NA50", J PHYS G-NU, 27(3), 2001, pp. 677-684

Abstract

The NA50 and NA38 experiments have studied muon pair production in p-A andnucleus-nucleus collisions at the CERN SPS. Results on dimuons in the invariant mass region between the phi and the J/psi masses (IMR) are presented. The standard sources of muon pairs in the IMR are the Drell-Yan process and the semileptonic decay of charmed mesons. A new four-dimensional unfolding method is applied to the data. The p-A results are well described in terms of these known sources, which, in contrast, fail to explain nucleus-nucleus data: an extra yield of muon pairs is observed. Although this excess is compatible with an enhanced production of charmed hadrons, other possible sources cannot be excluded. In particular, a comparison between data and predictions from a theoretical model which calculates the production of thermal dimuons is presented in this paper.

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Documento generato il 29/11/20 alle ore 03:24:26