Constraints on the gluon density from bottom quark and prompt photon production

Conference · Sat Aug 15 04:00:00 EDT 1992

OSTI ID:10103566

Berger, E L; Meng, R ^[1]; Qiu, J ^[2]

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1. Argonne National Lab., IL (United States)
2. Iowa State Univ. of Science and Technology, Ames, IA (United States). Dept. of Physics and Astronomy

In next-to-leading order quantum chromodynamics, gluon-gluon interactions dominate the production of bottom quarks at hadron collider energies, and gluon-quark interactions control inclusive prompt photon production at large transverse momentum in pp collisions at fixed-target energies. Using such data, in conjunction with data from deep inelastic lepton scattering, we determine a new gluon density whose shape differs substantially from that derived from previous fits of data. The new set of parton densities provides a good fit to bottom quark, prompt photon, and deep inelastic data, including the most recent NMC and CCFR results.

• Research Organization: Argonne National Lab., IL (United States). High Energy Physics Div.
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38; FG02-92ER40730
• OSTI ID: 10103566
• Report Number(s): ANL-HEP-CP--92-79; CONF-920837--9; ON: DE93002782
• Country of Publication: United States
• Language: English

Related Subjects

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662340
662440
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BEAUTY PARTICLES
CROSS SECTIONS
DEEP INELASTIC SCATTERING
DENSITY
GLUON-GLUON INTERACTIONS
GLUONS
HADRON INTERACTIONS
LEPTONS
PHOTON AND CHARGED-LEPTON INTERACTIONS WITH HADRONS
PHOTOPRODUCTION
PROPERTIES OF OTHER PARTICLES INCLUDING HYPOTHETICAL PARTICLES
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
TRANSVERSE MOMENTUM