title: Measurement of differences between J/psi and psi(') suppression in p-A collisions
abstract: Measurements of the suppression of the yield per nucleon of J/psi and psi(') production for 800 GeV/ c protons incident on heavy nuclear targets, relative to light nuclear targets, have been made with very broad coverage in x(F) and p(T). The observed suppression is smallest at x(F) values of 0.25 and below, and increases at larger values of x(F). It is also strongest at small p(T). Substantial differences between psi(') and J/psi production are observed for the first time in p-A collisions. The suppression for psi(') production is stronger than that for J/psi for x(F) near zero, but becomes comparable to that for J/psi for x(F)>0.6.
authors.affiliation: Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
authors.initials: MJ
authors.lastname: Leitch
authors.initials: WM
authors.lastname: Lee
authors.initials: ME
authors.lastname: Beddo
authors.initials: CN
authors.lastname: Brown
authors.initials: TA
authors.lastname: Carey
authors.initials: TH
authors.lastname: Chang
authors.initials: WE
authors.lastname: Cooper
authors.initials: CA
authors.lastname: Gagliardi
authors.initials: GT
authors.lastname: Garvey
authors.initials: DF
authors.lastname: Geesaman
authors.initials: EA
authors.lastname: Hawker
authors.initials: XC
authors.lastname: He
authors.initials: LD
authors.lastname: Isenhower
authors.initials: DM
authors.lastname: Kaplan
authors.initials: SB
authors.lastname: Kaufman
authors.initials: DD
authors.lastname: Koetke
authors.initials: PL
authors.lastname: McGaughey
authors.initials: JM
authors.lastname: Moss
authors.initials: BA
authors.lastname: Mueller
authors.initials: V
authors.lastname: Papavassiliou
authors.initials: JC
authors.lastname: Peng
authors.initials: G
authors.lastname: Petitt
authors.initials: PE
authors.lastname: Reimer
authors.initials: ME
authors.lastname: Sadler
authors.initials: WE
authors.lastname: Sondheim
authors.initials: PW
authors.lastname: Stankus