Color-octet contributions to {ital J}/{psi} hadroproduction at fixed target energies

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.54.5545· OSTI ID:388440

Gupta, S; Sridhar, K ^[1]

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1. Theory Group, Tata Institute of Fundamental Research, Homi Bhabha Road, Bombay 400005 (India)

We investigate the integrated cross section for forward {ital J}/{psi} production in proton-proton and pion-proton collisions at center-of-mass energies up to 60 GeV. We find that color-octet contributions to the cross section are crucially important, and their inclusion produces a very good description of the data. Since the values of nonperturbative matrix elements are fixed by other experiments, these predictions are parameter-free. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 388440
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 54; ISSN 0556-2821; ISSN PRVDAQ
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COLOR MODEL
CROSS SECTIONS
GEV RANGE 10-100
J PSI-3097 MESONS
MATRIX ELEMENTS
OCTET MODEL
PARTICLE PRODUCTION
PION-PROTON INTERACTIONS
PROTON-PROTON INTERACTIONS