Double parton interactions in {gamma}+3 jet events in pp collisions at {radical}(s)=1.96 TeV

Journal Article · Mon Mar 01 04:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.052012· OSTI ID:21409823

Abazov, V M; Alexeev, G D; Golovanov, G; Kharzheev, Y N; Malyshev, V L; Skachkov, N B; Tokmenin, V V; Verkheev, A Y; Vertogradov, L S; Yatsunenko, Y A ^[1]; Abbott, B; Gutierrez, P; Hossain, S; Rominsky, M; Severini, H; Skubic, P; Strauss, M ^[2]; Abolins, M; Alton, A; Benitez, J A ^[3]

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1. Joint Institute for Nuclear Research, Dubna (Russian Federation)
2. University of Oklahoma, Norman, Oklahoma 73019 (United States)
3. Michigan State University, East Lansing, Michigan 48824 (United States)

We have used a sample of {gamma}+3 jets events collected by the D0 experiment with an integrated luminosity of about 1 fb{sup -1} to determine the fraction of events with double parton scattering (f{sub DP}) in a single pp collision at {radical}(s)=1.96 TeV. The DP fraction and effective cross section ({sigma}{sub eff}), a process-independent scale parameter related to the parton density inside the nucleon, are measured in three intervals of the second (ordered in p{sub T}) jet transverse momentum p{sub T}{sup jet2} within the range 15{<=}p{sub T}{sup jet2{<=}}30 GeV. In this range, f{sub DP} varies between 0.23{<=}f{sub DP{<=}}0.47, while {sigma}{sub eff} has the average value {sigma}{sub eff}{sup ave}=16.4{+-}0.3(stat){+-}2.3(syst) mb.

• OSTI ID: 21409823
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON-BARYON INTERACTIONS
BARYONS
CROSS SECTIONS
DENSITY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
LINEAR MOMENTUM
LUMINOSITY
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PHYSICAL PROPERTIES
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
QUARKS
SCATTERING
TEV RANGE
TEV RANGE 01-10
TRANSVERSE MOMENTUM