Bound state effects in transverse momentum parton distributions

Journal Article · Wed Feb 01 04:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.73.034007· OSTI ID:20776649

Diakonos, F K; Galanopoulos, G D; Maintas, X N ^[1]

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1. Department of Physics, University of Athens, GR-15771 Athens (Greece)

We derive a nonperturbative transverse momentum distribution for partons using a potential model to describe the quark-quark interaction inside the proton. We use this distribution in the calculation of the differential cross section of {pi}{sup 0} production for intermediate transverse momentum values in p-p collisions at high energies. Assuming a variable string tension constant for the quark-quark potential we obtain a very good description of the experimental data at different energies. The corresponding values of the mean transverse momentum of the partons are essentially lower than those obtained using a Gaussian transverse momentum parton distribution. Using the same approach we can also describe the proton production data in the Chicago-Princeton experiment. Our analysis indicates that bound state effects may be important for the description of the experimental data in proton-proton collisions.

• OSTI ID: 20776649
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BOUND STATE
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
INCLUSIVE INTERACTIONS
PARTICLE PRODUCTION
PIONS NEUTRAL
POTENTIALS
PROTON-PROTON INTERACTIONS
PROTONS
QUARK-QUARK INTERACTIONS
QUARKS
TRANSVERSE MOMENTUM