Photon-gluon-fusion analysis of charm photoproduction

Journal Article · Mon Nov 12 04:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.65.2503· OSTI ID:6255334

Anjos, J C; Appel, J A; Bean, A; Bracker, S B; Browder, T E; Cremaldi, L M; Elliott, J R; Escobar, C O; Gibney, M C; Hartner, G F; Karchin, P E; Kumar, B R; Losty, M J; Luste, G J; Mantsch, P M; Martin, J F; McHugh, S; Menary, S R; Morrison, R J; Nash, T ; Ong, P; Pinfold, J; Punkar, G; Purohit, M V; Raab, J R; Santoro, A F.S.; Sidhu, J S; Sliwa, K; Sokoloff, M D; Souza, M H.G.; Spalding, W J; Streetman, M E; Stundzia, A B; Witherell, M S ^[1]

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1. University of California; Santa Barbara; CA (USA) Carleton University; Ottawa; ON (Canada) Centro Brasileiro de Pesquisas Fisicas; Rio de Janeiro (Brazil) University of Cincinnati; Cincinnati; OH (USA) University of Colorado; Boulder; CO (USA) Fermi National Accelerator Laboratory; Batavia; IL (USA) University of Mississippi; University; MS (USA) National Research Council; Ottawa; ON (Canada) Princeton University; Princeton; NJ (USA) Universidade de Sao Paulo; SP (Brazil) University of Toronto; Toronto; ON (Canada) Yal

Results on the photoproduction of 10 000 fully reconstructed charmed particles from the 10{sup 8} recorded triggers of Fermilab experiment E691 have been analyzed in the photon-gluon-fusion model. We find that the total cross section, its rise with energy, and the {ital p}{sub {ital T}}{sup 2} and {ital x}{sub {ital F}} distributions can be explained by a high mass for the charm quark ({ital m}{sub {ital c}}=1.74{sub {minus}0.18}{sup +0.13} GeV/{ital c}{sup 2}) and a soft-gluon distribution ({ital G}({ital x}){approximately}(1{minus}{ital x}){sup {ital n}{sub {ital g}}}, where {ital n}{sub {ital g}}=7.1{plus minus}2.2).

• OSTI ID: 6255334
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 65:20; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
645204 -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON REACTIONS
BASIC INTERACTIONS
BOSONS
CHARGED-PARTICLE REACTIONS
CHARM PARTICLES
COMPOSITE MODELS
CROSS SECTIONS
DATA ANALYSIS
DIFFERENTIAL CROSS SECTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FUNCTIONS
GLUONS
HADRON REACTIONS
HADRONS
INTERACTIONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PRODUCTION
PARTON MODEL
PHOTON-HADRON INTERACTIONS
PHOTONS
PHOTOPRODUCTION
POSTULATED PARTICLES
PROTON REACTIONS
QUARK MODEL
STRING MODELS
STRUCTURE FUNCTIONS