title: Charged-particle multiplicity near midrapidity in central Au+Au collisions at sqrt[SNN]=56 and 130 GeV.
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.
authors.affiliation: Physics Division, Argonne National Laboratory, Argonne, Illinois 60439-4843, USA.
authors.forename: B B
authors.initials: BB
authors.lastname: Back
authors.forename: M D
authors.initials: MD
authors.lastname: Baker
authors.forename: D S
authors.initials: DS
authors.lastname: Barton
authors.forename: S
authors.initials: S
authors.lastname: Basilev
authors.forename: B D
authors.initials: BD
authors.lastname: Bates
authors.forename: R
authors.initials: R
authors.lastname: Baum
authors.forename: R R
authors.initials: RR
authors.lastname: Betts
authors.forename: A
authors.initials: A
authors.lastname: Białas
authors.forename: R
authors.initials: R
authors.lastname: Bindel
authors.forename: W
authors.initials: W
authors.lastname: Bogucki
authors.forename: A
authors.initials: A
authors.lastname: Budzanowski
authors.forename: W
authors.initials: W
authors.lastname: Busza
authors.forename: A
authors.initials: A
authors.lastname: Carroll
authors.forename: M
authors.initials: M
authors.lastname: Ceglia
authors.forename: Y H
authors.initials: YH
authors.lastname: Chang
authors.forename: A E
authors.initials: AE
authors.lastname: Chen
authors.forename: T
authors.initials: T
authors.lastname: Coghen
authors.forename: C
authors.initials: C
authors.lastname: Conner
authors.forename: W
authors.initials: W
authors.lastname: Czyz
authors.forename: B
authors.initials: B
authors.lastname: Dabrowski
authors.forename: M P
authors.initials: MP
authors.lastname: Decowski
authors.forename: M
authors.initials: M
authors.lastname: Despet
authors.forename: P
authors.initials: P
authors.lastname: Fita
authors.forename: J
authors.initials: J
authors.lastname: Fitch
authors.forename: M
authors.initials: M
authors.lastname: Friedl
authors.forename: K
authors.initials: K
authors.lastname: Gałuszka
authors.forename: R
authors.initials: R
authors.lastname: Ganz
authors.forename: E
authors.initials: E
authors.lastname: Garcia
authors.forename: N
authors.initials: N
authors.lastname: George
authors.forename: J
authors.initials: J
authors.lastname: Godlewski
authors.forename: C
authors.initials: C
authors.lastname: Gomes
authors.forename: E
authors.initials: E
authors.lastname: Griesmayer
authors.forename: K
authors.initials: K
authors.lastname: Gulbrandsen
authors.forename: S
authors.initials: S
authors.lastname: Gushue
authors.forename: J
authors.initials: J
authors.lastname: Halik
authors.forename: C
authors.initials: C
authors.lastname: Halliwell
authors.forename: P
authors.initials: P
authors.lastname: Haridas
authors.forename: A
authors.initials: A
authors.lastname: Hayes
authors.forename: G A
authors.initials: GA
authors.lastname: Heintzelman
authors.forename: C
authors.initials: C
authors.lastname: Henderson
authors.forename: R
authors.initials: R
authors.lastname: Hollis
authors.forename: R
authors.initials: R
authors.lastname: Hołyński
authors.forename: B
authors.initials: B
authors.lastname: Holzman
authors.forename: E
authors.initials: E
authors.lastname: Johnson
authors.forename: J
authors.initials: J
authors.lastname: Kane
authors.forename: J
authors.initials: J
authors.lastname: Katzy
authors.forename: W
authors.initials: W
authors.lastname: Kita
authors.forename: J
authors.initials: J
authors.lastname: Kotuła
authors.forename: H
authors.initials: H
authors.lastname: Kraner
authors.forename: W
authors.initials: W
authors.lastname: Kucewicz
authors.forename: P
authors.initials: P
authors.lastname: Kulinich
authors.forename: C
authors.initials: C
authors.lastname: LawV
authors.forename: M
authors.initials: M
authors.lastname: Lemler
authors.forename: J
authors.initials: J
authors.lastname: Ligocki
authors.forename: W T
authors.initials: WT
authors.lastname: Lin
authors.forename: S
authors.initials: S
authors.lastname: Manly
authors.forename: D
authors.initials: D
authors.lastname: McLeod
authors.forename: J
authors.initials: J
authors.lastname: Michałowski
authors.forename: A
authors.initials: A
authors.lastname: Mignerey
authors.forename: J
authors.initials: J
authors.lastname: Mülmenstädt
authors.forename: M
authors.initials: M
authors.lastname: Neal
authors.forename: R
authors.initials: R
authors.lastname: Nouicer
authors.forename: A
authors.initials: A
authors.lastname: Olszewski
authors.forename: R
authors.initials: R
authors.lastname: Pak
authors.forename: I C
authors.initials: IC
authors.lastname: Park
authors.forename: M
authors.initials: M
authors.lastname: Patel
authors.forename: H
authors.initials: H
authors.lastname: Pernegger
authors.forename: M
authors.initials: M
authors.lastname: Plesko
authors.forename: C
authors.initials: C
authors.lastname: Reed
authors.forename: L P
authors.initials: LP
authors.lastname: Remsberg
authors.forename: M
authors.initials: M
authors.lastname: Reuter
authors.forename: C
authors.initials: C
authors.lastname: Roland
authors.forename: G
authors.initials: G
authors.lastname: Roland
authors.forename: D
authors.initials: D
authors.lastname: Ross
authors.forename: L
authors.initials: L
authors.lastname: Rosenberg
authors.forename: J
authors.initials: J
authors.lastname: Ryan
authors.forename: A
authors.initials: A
authors.lastname: Sanzgiri
authors.forename: P
authors.initials: P
authors.lastname: Sarin
authors.forename: P
authors.initials: P
authors.lastname: Sawicki
authors.forename: J
authors.initials: J
authors.lastname: Scaduto
authors.forename: J
authors.initials: J
authors.lastname: Shea
authors.forename: J
authors.initials: J
authors.lastname: Sinacore
authors.forename: W
authors.initials: W
authors.lastname: Skulski
authors.forename: S G
authors.initials: SG
authors.lastname: Steadman
authors.forename: G S
authors.initials: GS
authors.lastname: Stephans
authors.forename: P
authors.initials: P
authors.lastname: Steinberg
authors.forename: A
authors.initials: A
authors.lastname: Straczek
authors.forename: M
authors.initials: M
authors.lastname: Stodulski
authors.forename: M
authors.initials: M
authors.lastname: Strek
authors.forename: Z
authors.initials: Z
authors.lastname: Stopa
authors.forename: A
authors.initials: A
authors.lastname: Sukhanov
authors.forename: K
authors.initials: K
authors.lastname: Surowiecka
authors.forename: J L
authors.initials: JL
authors.lastname: Tang
authors.forename: R
authors.initials: R
authors.lastname: Teng
authors.forename: A
authors.initials: A
authors.lastname: Trzupek
authors.forename: C
authors.initials: C
authors.lastname: Vale
authors.forename: G J
authors.initials: GJ
authors.lastname: van Nieuwenhuizen
authors.forename: R
authors.initials: R
authors.lastname: Verdier
authors.forename: B
authors.initials: B
authors.lastname: Wadsworth
authors.forename: F L
authors.initials: FL
authors.lastname: Wolfs
authors.forename: B
authors.initials: B
authors.lastname: Wosiek
authors.forename: K
authors.initials: K
authors.lastname: Woźniak
authors.forename: A H
authors.initials: AH
authors.lastname: Wuosmaa
authors.forename: B
authors.initials: B
authors.lastname: Wysłouch
authors.forename: K
authors.initials: K
authors.lastname: Zalewski
authors.forename: P
authors.initials: P
authors.lastname: Zychowski