CERN Accelerating science

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1.
Indications for the onset of deconfinement in nucleus nucleus collisions / NA49 collaboration
The hadronic final state of central Pb+Pb collisions at 20, 30, 40, 80, and 158 AGeV has been measured by the CERN NA49 collaboration. The mean transverse mass of pions and kaons at midrapidity stays nearly constant in this energy range, whereas at lower energies, at the AGS, a steep increase with beam energy was measured. [...]
nucl-ex/0410041; nucl-ex/0410041.- 2005 - 11 p. - Published in : 10.1142/9789812702227_0043 Fulltext: arXiv:nucl-ex_0410041 - PDF; 0410041 - PDF;
In : 32nd International Conference on High-energy Physics, pp.343-346
2.
Long-range correlations in PbPb collisions at 158 a *GeV / Alt, C (Frankfurt U.) ; Anticic, T (Boskovic Inst., Zagreb) ; Baatar, B (Dubna, JINR) ; Barna, D (Budapest, RMKI) ; Bartke, J (Cracow, INP) ; Betev, L (Frankfurt U. ; CERN) ; Bialkowska, H (Warsaw, Inst. Nucl. Studies) ; Blume, C (Frankfurt U.) ; Boimska, B (Warsaw, Inst. Nucl. Studies) ; Botje, M (NIKHEF, Amsterdam) et al. /NA49 ; SPbSU Group
We present the 1st results of the event-by-event study of long-range correlations between event mean Pt and charged particle multiplicity using NA49 experimental data in two separated rapidity intervals in 158 A *Ge V Pb Pb collisions at the CERN SPS. Noticeable long range correlations are found. [...]
2005 - 10 p. - Published in : : 1 (2005) , pp. 222-231 Fulltext: PDF;
In : 17th International Baldin Seminar on High Energy Physics Problems: Relativistic Nuclear Physics and Quantum Chromodynamics, Vol.1, Dubna, Russian Federation, 27 Sep - 1 Oct 2004, pp.222-231
3.
Energieabhängigkeit von $\pi^{-} \pi^{-}$ Bose-Einstein-Korrelationen in zentralen Schwerionenkollisionen gemessen am Experiment NA49 / Kniege, Stefan
127 p.

EDMS NA49 server - Fulltext
4.
Production of pions, kaons and protons in pp collisions at $\sqrt{s}$ = 900 GeV with ALICE at the LHC / ALICE Collaboration
The production of $\pi^+, pi^-, K^+, K^-$, p, and $\bar{p}$ at mid-rapidity has been measured in proton-proton collisions at $\sqrt{s}$ = 900 GeV with the ALICE detector. Particle identification is performed using the specific energy loss in the inner tracking silicon detector and the time projection chamber. [...]
arXiv:1101.4110; CERN-PH-EP-2010-085; CERN-PH-EP-2010-085.- Geneva : CERN, 2011 - 30 p. - Published in : Eur. Phys. J. C 71 (2011) 1655 Author list: TEX; Fulltext: PDF; Springer Open Access article: PDF; External link: Rivet analyses reference
5.
Transverse momentum spectra of charged particles in proton-proton collisions at $\sqrt{s}$ = 900 GeV with ALICE at the LHC / ALICE Collaboration
The inclusive charged particle transverse momentum distribution is measured in proton-proton collisions at $\sqrt{s} = 900$~GeV at the LHC using the ALICE detector. The measurement is performed in the central pseudorapidity region $(|\eta|<0.8)$ over the transverse momentum range $0.15_{\rm INEL}=0.483\pm0.001$~(stat.)~$\pm0.007$~(syst.)~GeV/$c$ and $\left_{\rm NSD}=0.489\pm0.001$~(stat.)~$\pm0.007$~(syst.)~GeV/$c$, respectively. [...]
arXiv:1007.0719.- 2010 - 20 p. - Published in : Phys. Lett. B 693 (2010) 53-68 Elsevier Open Access article: PDF; Fulltext: PDF; External link: Rivet analyses reference
6.
Two-pion Bose-Einstein correlations in $pp$ collisions at $\sqrt{s}$=900 GeV / ALICE Collaboration
We report on the measurement of two-pion correlation functions from pp collisions at sqrt(s)=900 GeV performed by the ALICE experiment at the Large Hadron Collider. Our analysis shows an increase of the HBT radius with increasing event multiplicity, in line with other measurements done in particle- and nuclear collisions. [...]
arXiv:1007.0516.- 2010 - 13 p. - Published in : Phys. Rev. D 82 (2010) 052001 APS Open Access article: PDF; Fulltext: PDF; External link: DURHAM
7.
Midrapidity antiproton-to-proton ratio in pp collisions at $\sqrt{s} = 0.9$ and $7$~TeV measured by the ALICE experiment / ALICE collaboration
The ratio of the yields of antiprotons to protons in pp collisions has been measured by the ALICE experiment at $\sqrt{s} = 0.9$ and $7$~TeV during the initial running periods of the Large Hadron Collider(LHC). The measurement covers the transverse momentum interval $0.45 < p_{\rm{t}} < 1.05$~GeV/$c$ and rapidity $|y| < 0.5$. [...]
arXiv:1006.5432.- 2010 - 12 p. - Published in : Phys. Rev. Lett. 105 (2010) 072002 APS Open Access article: PDF; Fulltext: PDF; External link: DURHAM
8.
Charged-particle multiplicity measurement in proton-proton collisions at $\sqrt{s}$ = 7 TeV with ALICE at LHC / ALICE Collaboration
The pseudorapidity density and multiplicity distribution of charged particles produced in proton-proton collisions at the LHC, at a centre-of-mass energy sqrt(s) = 7 TeV, were measured in the central pseudorapidity region |eta| < 1. Comparisons are made with previous measurements at sqrt(s) = 0.9 TeV and 2.36 TeV. [...]
arXiv:1004.3514.- 2010 - 11 p. - Published in : Eur. Phys. J. C 68 (2010) 345-354 Fulltext: 10052_2010_1350_OnlinePDF - PDF; arXiv:1004.3514 - PDF; Springer Open Access article: PDF; External link: Rivet analyses reference
9.
Charged-particle multiplicity measurement in proton-proton collisions at $\sqrt{s}$ = 0.9 and 2.36 TeV with ALICE at LHC / ALICE Collaboration
Charged-particle production was studied in proton-proton collisions collected at the LHC with the ALICE detector at centre-of-mass energies 0.9 TeV and 2.36 TeV in the pseudorapidity range |eta| < 1.4. In the central region (|eta| < 0.5), at 0.9 TeV, we measure charged-particle pseudorapidity density dNch/deta = 3.02 +- 0.01 (stat.) +0.08 -0.05 (syst.) for inelastic interactions, and dNch/deta = 3.58 +- 0.01 (stat.) +0.12 -0.12 (syst.) for non-single-diffractive interactions. [...]
arXiv:1004.3034.- 2010 - 20 p. - Published in : Eur. Phys. J. C 68 (2010) 89-108 Fulltext: arXiv:1004.3034 - PDF; 10052_2010_1339_OnlinePDF - PDF; Springer Open Access article: PDF; External link: Rivet analyses reference
10.
The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events / Alme, J. (Bergen U.) ; Andres, Y. (CERN) ; Appelshauser, H. (Frankfurt U., FIAS) ; Bablok, S. (Bergen U.) ; Bialas, N. (Bergen U.) ; Bolgen, R. (Bergen U.) ; Bonnes, U. (Darmstadt, Tech. Hochsch.) ; Bramm, R. (Darmstadt, GSI) ; Braun-Munzinger, P. (Darmstadt, Tech. Hochsch. ; Darmstadt, GSI ; Darmstadt, EMMI ; Frankfurt U., Inst. Kernphys.) ; Campagnolo, R. (CERN) et al.
The design, construction, and commissioning of the ALICE Time-Projection Chamber (TPC) is described. It is the main device for pattern recognition, tracking, and identification of charged particles in the ALICE experiment at the CERN LHC. [...]
arXiv:1001.1950.- 2010 - 56 p. - Published in : Nucl. Instrum. Methods Phys. Res., A 622 (2010) 316-367 Fulltext: PDF; External link: Preprint

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