title: J/psi polarization in 800-GeV p-Cu interactions.
abstract: We present measurements of the polarization of the J/psi produced in 800-GeV proton interactions with a copper target. Polarization of the J/psi is sensitive to the ccmacr; production and hadronization processes. A longitudinal polarization is observed at large x(F), while at small x(F) the state is produced essentially unpolarized or slightly transversely polarized. No significant variation of the polarization is observed versus p(T).
authors.affiliation: New Mexico State University, Las Cruces, New Mexico 88003, USA.
authors.forename: T H
authors.initials: TH
authors.lastname: Chang
authors.forename: M E
authors.initials: ME
authors.lastname: Beddo
authors.forename: C N
authors.initials: CN
authors.lastname: Brown
authors.forename: T A
authors.initials: TA
authors.lastname: Carey
authors.forename: W E
authors.initials: WE
authors.lastname: Cooper
authors.forename: C A
authors.initials: CA
authors.lastname: Gagliardi
authors.forename: G T
authors.initials: GT
authors.lastname: Garvey
authors.forename: D F
authors.initials: DF
authors.lastname: Geesaman
authors.forename: E A
authors.initials: EA
authors.lastname: Hawker
authors.forename: X C
authors.initials: XC
authors.lastname: He
authors.forename: L D
authors.initials: LD
authors.lastname: Isenhower
authors.forename: D M
authors.initials: DM
authors.lastname: Kaplan
authors.forename: S B
authors.initials: SB
authors.lastname: Kaufman
authors.forename: D D
authors.initials: DD
authors.lastname: Koetke
authors.forename: P L
authors.initials: PL
authors.lastname: McGaughey
authors.forename: W M
authors.initials: WM
authors.lastname: Lee
authors.forename: M J
authors.initials: MJ
authors.lastname: Leitch
authors.forename: J M
authors.initials: JM
authors.lastname: Moss
authors.forename: B A
authors.initials: BA
authors.lastname: Mueller
authors.forename: V
authors.initials: V
authors.lastname: Papavassiliou
authors.forename: J C
authors.initials: JC
authors.lastname: Peng
authors.forename: P E
authors.initials: PE
authors.lastname: Reimer
authors.forename: M E
authors.initials: ME
authors.lastname: Sadler
authors.forename: W E
authors.initials: WE
authors.lastname: Sondheim
authors.forename: P W
authors.initials: PW
authors.lastname: Stankus
authors.forename: R S
authors.initials: RS
authors.lastname: Towell
authors.forename: R E
authors.initials: RE
authors.lastname: Tribble
authors.forename: M A
authors.initials: MA
authors.lastname: Vasiliev
authors.forename: J C
authors.initials: JC
authors.lastname: Webb
authors.forename: J L
authors.initials: JL
authors.lastname: Willis
authors.forename: G R
authors.initials: GR
authors.lastname: Young