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27 April 2024

» pubmed » pmid11019276

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Charged-particle multiplicity near midrapidity in central Au+Au collisions at sqrt[SNN]=56 and 130 GeV
B B Back ; M D Baker ; D S Barton ; S Basilev ; B D Bates ; R Baum ; R R Betts ; A Bia?as ; R Bindel ; W Bogucki ; A Budzanowski ; W Busza ; A Carroll ; M Ceglia ; Y H Chang ; A E Chen ; T Coghen ; C Conner ; W Czyz ; B Dabrowski ; M P Decowski ; M Despet ; P Fita ; J Fitch ; M Friedl ; K Ga?uszka ; R Ganz ; E Garcia ; N George ; J Godlewski ; C Gomes ; E Griesmayer ; K Gulbrandsen ; S Gushue ; J Halik ; C Halliwell ; P Haridas ; A Hayes ; G A Heintzelman ; C Henderson ; R Hollis ; R Ho?y?ski ; B Holzman ; E Johnson ; J Kane ; J Katzy ; W Kita ; J Kotu?a ; H Kraner ; W Kucewicz ; P Kulinich ; C LawV ; M Lemler ; J Ligocki ; W T Lin ; S Manly ; D McLeod ; J Micha?owski ; A Mignerey ; J Mülmenstädt ; M Neal ; R Nouicer ; A Olszewski ; R Pak ; I C Park ; M Patel ; H Pernegger ; M Plesko ; C Reed ; L P Remsberg ; M Reuter ; C Rol ; G Rol ; D Ross ; L Rosenberg ; J Ryan ; A Sanzgiri ; P Sarin ; P Sawicki ; J Scaduto ; J Shea ; J Sinacore ; W Skulski ; S G Steadman ; G S Stephans ; P Steinberg ; A Straczek ; M Stodulski ; M Strek ; Z Stopa ; A Sukhanov ; K Surowiecka ; J L Tang ; R Teng ; A Trzupek ; C Vale ; G J van Nieuwenhuizen ; R Verdier ; B Wadsworth ; F L Wolfs ; B Wosiek ; K Wo?niak ; A H Wuosmaa ; B Wys?ouch ; K Zalewski ; P Zychowski ; ;
Date:	9 Oct 2000
Journal:	Phys Rev Lett, 85 (15), 3100-4
Abstract:	We present the first measurement of pseudorapidity densities of primary charged particles near midrapidity in Au+Au collisions at sqrt[s(NN)] = 56 and 130 GeV. For the most central collisions, we find the charged-particle pseudorapidity density to be dN/deta\|(\|eta\|<1) = 408+/-12(stat)+/-30(syst) at 56 GeV and 555+/-12(stat)+/-35(syst) at 130 GeV, values that are higher than any previously observed in nuclear collisions. Compared to proton-antiproton collisions, our data show an increase in the pseudorapidity density per participant by more than 40% at the higher energy.
Source:	PubMed, pmid11019276
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