AbstractThe NA57 experiment has measured strange baryon and antibaryon production in Pb-Pb collisions at 40 A GeV/c and 160 A GeV/c beam momenta. This presentation covers strangeness enhancement and ...transverse spectra from the 160 A GeV/c data, and energy dependence of the particle yields. Enhancement factors increase with increasing strangeness content of the particle, when production yields from Pb-Pb collisions are compared with those observed in p-Be and p-Pb interactions. The transverse mass spectra have been analysed both with exponential fits and using a transverse flow model.
The NA57 experiment at the CERN SPS has measured strange baryon and antibaryon production in Pb
Pb collisions with 158 and 40
A GeV/
c beam momenta. Recent results on Λ, Ξ and Ω hyperon enhancements ...and from the transverse mass spectra analysis for the 158
A GeV/
c data sample are presented. The energy dependence of hyperon production at mid-rapidity is discussed.
Experiment NA57 at the CERN SPS Manzari, V; Collaboration, the NA57; Antinori, F ...
Journal of physics. G, Nuclear and particle physics,
02/1999, Letnik:
25
Journal Article
Recently the WA97 Collaboration has measured \(\mathrm{K}^0_{\mathrm{S}}\), \(\mathrm\Lambda\), \(\mathrm\Xi\), \(\mathrm\Omega\) and negative particle yields and transverse mass spectra at central ...rapidity in Pb–Pb and p–Pb collisions at 158 A GeV/c. These results are compared with the predictions of two of the most widely used event generators for heavy-ion collisions: VENUS 4.12 and RQMD 2.3. Both models predict that enhancements increase with the strangeness content of the particle. They fail, however, to reproduce completely the measured values of yields at central rapidity. In particular, for multistrange particles, VENUS fails to reproduce both the p–Pb and the Pb–Pb data, while RQMD works for p–Pb collisions but seems to be unable to reproduce the \(\mathrm\Omega\) data in Pb–Pb collisions. Moreover, the predicted behavior for strangeness production as a function of the centrality of the collision appears to be different from the observed behavior.
The ALICE dimuon spectrometer Baldisseri, A.
Nuclear Physics A,
2003, Letnik:
715
Journal Article, Conference Proceeding
Recenzirano
Odprti dostop
The Dimuon Spectrometer of the ALICE experiment is presented. The different subsystems are detailed with the final detector choices. Some important results of the R&D are shown. The physics ...performances are also reviewed.
Results on hyperon production from NA57 Fanebust, K; Collaboration, the NA57; Antinori, F ...
Journal of Physics G: Nuclear and Particle Physics,
07/2002, Letnik:
28, Številka:
7
Journal Article, Conference Proceeding
The NA57 experiment has been designed to study the onset of the strange baryon and antibaryon enhancements in Pb
Pb with respect to p-Be collisions, first observed by WA97 at 160
A GeV/
c. NA57 has ...extended the WA97 measurements to investigate the evolution of strangeness enhancement over a wider centrality range and as a function of the beam energy. Results on hyperon production in central Pb
Pb collisions at 40
A GeV/
c are presented and compared with those obtained at higher energy, in the same centrality range.
PDF