Search results

1

KS0, Λ and ≡ production at intermediate to high pT from Au+Au collisions at $\sqrt {s_{NN} } $ = 39, 11.5 and 7.7 GeV

100%

Zhu X.

Open Physics

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2012

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vol. 10

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issue 6

1345-1348

EN

We report on the p T dependence of nuclear modification factors (R CP) for KS0, Λ, ≡ and the $\bar NK_S^0 $ ratios at mid-rapidity from Au+Au collisions at $\sqrt {s_{NN} } $ = 39, 11.5 and 7.7 GeV. At $\sqrt {s_{NN} } $ = 39 GeV, the R CP data show a baryon/meson separation at intermediate p T and a suppression for KS0 for p T up to 4.5 GeV/c; the $\bar \Lambda K_S^0 $ shows baryon enhancement in the most central collisions. However, at $\sqrt {s_{NN} } $ = 11.5 and 7.7 GeV, R CP shows less baryon/meson separation and $\bar NK_S^0 $ shows almost no baryon enhancement. These observations indicate that the matter created in Au+Au collisions at $\sqrt {s_{NN} } $ = 11.5 or 7.7 GeV might be distinct from that created at $\sqrt {s_{NN} } $ = 39 GeV.

2

The horn, kink and step, dale: from few GeV to few TeV

100%

Rustamov A.

Open Physics

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2012

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vol. 10

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issue 6

1267-1270

EN

Rich experimental data have been collected in heavy-ion collisions at high energies to study the properties of strongly interacting matter. As the theory of strong interactions, QCD, predicts asymptotic freedom, the created matter at sufficiently high temperature and density will be dominated by a state of quasi-free quarks and gluons referred to as the Quark-Qluon Plasma (QGP). Experimental signals for the onset of the QGP creation (the onset of the deconfinement) have been predicted within the statistical model for the early stage of nucleus-nucleus collisions. In this model the existence of two different phases is assumed: confined mater and the QGP, as well as a first order phase transition between them. Until recently, these predictions were confirmed only by the NA49 experiment at the CERN SPS. In this report recent results from STAR at RHIC/BNL and from ALICE at LHC/CERN, related to the onset of deconfinement, will be compared to published results from NA49.

3

Search for the critical point and the onset of deconfinement

100%

Blume C.

Open Physics

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2012

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vol. 10

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issue 6

1245-1253

EN

A review of the current experimental situation on the search for a critical point in the QCD phase diagram and the onset of deconfinement is given. Ongoing (STAR, NA61), as well as previous (NA49) experiments are presented. Their main results up-to-now are summarized and their findings are put into a general context. The future experimental program (CBM at FAIR, MPD at NICA) is discussed as well.

4

Status and plans of the ion program of NA61 at the CERN SPS

88%

Grebieszkow K.

Open Physics

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2012

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vol. 10

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issue 6

1333-1337

EN

The NA61/SHINE at the CERN SPS is a new experiment to study hadron production in p+p, p+A, h+A and A+A interactions. The main goal of the NA61 ion program is to explore the phase diagram (T − µB) of strongly interacting matter. In particular, we plan to study the properties of the onset of deconfinement and to search for the signatures of the critical point. A two-dimensional scan of the phase diagram will be performed by varying the energy (13A–158A GeV) and system size (p+p, Be+Be, Ar+Ca, Xe+La) of collisions. This paper summarizes the status and plans of the NA61/SHINE ion program. In particular the detector upgrades, data taking schedule and the first results on spectra and correlations are discussed.

Refine search results

4 Open Physics

4 2012

1 Blume C.

1 Grebieszkow K.

1 Rustamov A.

1 Zhu X.

KS0, Λ and ≡ production at intermediate to high pT from Au+Au collisions at $\sqrt {s_{NN} } $ = 39, 11.5 and 7.7 GeV

The horn, kink and step, dale: from few GeV to few TeV

Search for the critical point and the onset of deconfinement

Status and plans of the ion program of NA61 at the CERN SPS