منابع مشابه
Latest Results from Na60
The NA60 experiment has measured the production of muon pairs and of charged particles in In+In collisions at a beam energy of 158 A GeV. For invariant dimuon masses below the φ the space-time averaged ρ spectral function was isolated by a novel procedure. It shows a strong broadening but essentially no shift in mass. The production of J/ψ was measured as a function of the collision centrality....
متن کاملNa60 Results on Thermal Dimuons Na60 Collaboration
The NA60 experiment at the CERN SPS has measured muon pairs with unprecedented precision in 158A GeV In-In collisions. A strong excess of pairs above the known sources is observed in the whole mass region 0.2<M<2.6 GeV. The mass spectrum for M<1 GeV is consistent with a dominant contribution from ππ → ρ → μμ annihilation. The associated ρ spectral function shows a strong broadening, but essenti...
متن کاملRecent results from the CERN NA60 experiment
NA60 is a CERN SPS experiment that studied dimuon production in In-In collisions at 158 A·GeV per nucleon. More recently proton nucleus collisions have also been investigated in order to provide a reference for heavy ion studies. Some of the most important results obtained by the experiment are the first measurement of the ρ spectral function in nuclear collision and the study of its medium-ind...
متن کاملLatest Results from HERA
Deep inelastic scattering of leptons off nucleons has played a fundamental role in the understanding of the structure of the nucleon. At the HERA electron proton collider it is possible to study the proton in new kinematic regimes, in particular at low Bjorken-x and at large virtualityQ2. Due to the large centre of mass energy of 300 GeV HERA is also an important facility to search for new phen...
متن کاملFIRST RESULTS from the NA60 EXPERIMENT at CERN
Since 1986, several heavy ion experiments have studied some signatures of the formation of the quark-gluon plasma and a few exciting results have been found. However, some important questions are still unanswered and require new measurements. The NA60 experiment, with a new detector concept that vastly improves dimuon detection in proton-nucleus and heavy-ion collisions, studies several of thos...
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ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2006
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/32/12/s06