title: High transverse momentum triggered correlations over a large pseudorapidity acceptance in Au + Au collisions at square root(s(NN)) = 200 GeV.
abstract: A measurement of two-particle correlations with a high transverse momentum trigger particle (p(T)(trig) > 2.5 GeV/c) is presented for Au+Au collisions at square root(s(NN)) = 200 GeV over the uniquely broad longitudinal acceptance of the PHOBOS detector (-4 < Delta eta < 2). A broadening of the away-side azimuthal correlation compared to elementary collisions is observed at all Delta eta. As in p+p collisions, the near side is characterized by a peak of correlated partners at small angle relative to the trigger particle. However, in central Au+Au collisions an additional correlation extended in Delta eta and known as the "ridge" is found to reach at least |Delta eta| approximately = 4. The ridge yield is largely independent of Delta eta over the measured range, and it decreases towards more peripheral collisions. For the chosen (p(T)(trig) cut, the ridge yield is consistent with zero for events with less than roughly 100 participating nucleons.
authors.affiliation: Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA.
authors.forename: B
authors.initials: B
authors.lastname: Alver
authors.forename: B B
authors.initials: BB
authors.lastname: Back
authors.forename: M D
authors.initials: MD
authors.lastname: Baker
authors.forename: M
authors.initials: M
authors.lastname: Ballintijn
authors.forename: D S
authors.initials: DS
authors.lastname: Barton
authors.forename: R R
authors.initials: RR
authors.lastname: Betts
authors.forename: A A
authors.initials: AA
authors.lastname: Bickley
authors.forename: R
authors.initials: R
authors.lastname: Bindel
authors.forename: W
authors.initials: W
authors.lastname: Busza
authors.forename: A
authors.initials: A
authors.lastname: Carroll
authors.forename: Z
authors.initials: Z
authors.lastname: Chai
authors.forename: V
authors.initials: V
authors.lastname: Chetluru
authors.forename: M P
authors.initials: MP
authors.lastname: Decowski
authors.forename: E
authors.initials: E
authors.lastname: García
authors.forename: T
authors.initials: T
authors.lastname: Gburek
authors.forename: N
authors.initials: N
authors.lastname: George
authors.forename: K
authors.initials: K
authors.lastname: Gulbrandsen
authors.forename: C
authors.initials: C
authors.lastname: Halliwell
authors.forename: J
authors.initials: J
authors.lastname: Hamblen
authors.forename: M
authors.initials: M
authors.lastname: Hauer
authors.forename: C
authors.initials: C
authors.lastname: Henderson
authors.forename: D J
authors.initials: DJ
authors.lastname: Hofman
authors.forename: R S
authors.initials: RS
authors.lastname: Hollis
authors.forename: R
authors.initials: R
authors.lastname: Hołyński
authors.forename: B
authors.initials: B
authors.lastname: Holzman
authors.forename: A
authors.initials: A
authors.lastname: Iordanova
authors.forename: E
authors.initials: E
authors.lastname: Johnson
authors.forename: J L
authors.initials: JL
authors.lastname: Kane
authors.forename: N
authors.initials: N
authors.lastname: Khan
authors.forename: P
authors.initials: P
authors.lastname: Kulinich
authors.forename: C M
authors.initials: CM
authors.lastname: Kuo
authors.forename: W
authors.initials: W
authors.lastname: Li
authors.forename: W T
authors.initials: WT
authors.lastname: Lin
authors.forename: C
authors.initials: C
authors.lastname: Loizides
authors.forename: S
authors.initials: S
authors.lastname: Manly
authors.forename: A C
authors.initials: AC
authors.lastname: Mignerey
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: C
authors.initials: C
authors.lastname: Reed
authors.forename: C
authors.initials: C
authors.lastname: Roland
authors.forename: G
authors.initials: G
authors.lastname: Roland
authors.forename: J
authors.initials: J
authors.lastname: Sagerer
authors.forename: H
authors.initials: H
authors.lastname: Seals
authors.forename: I
authors.initials: I
authors.lastname: Sedykh
authors.forename: C E
authors.initials: CE
authors.lastname: Smith
authors.forename: M A
authors.initials: MA
authors.lastname: Stankiewicz
authors.forename: P
authors.initials: P
authors.lastname: Steinberg
authors.forename: G S F
authors.initials: GS
authors.lastname: Stephans
authors.forename: A
authors.initials: A
authors.lastname: Sukhanov
authors.forename: M B
authors.initials: MB
authors.lastname: Tonjes
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: S S
authors.initials: SS
authors.lastname: Vaurynovich
authors.forename: R
authors.initials: R
authors.lastname: Verdier
authors.forename: G I
authors.initials: GI
authors.lastname: Veres
authors.forename: P
authors.initials: P
authors.lastname: Walters
authors.forename: E
authors.initials: E
authors.lastname: Wenger
authors.forename: F L H
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: B
authors.initials: B
authors.lastname: Wysłouch