Single Electrons from Heavy-Flavor Decays in p+p Collisions at {radical}(s)=200 GeV

Journal Article · Fri Jan 27 00:00:00 EST 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.96.032001· OSTI ID:20776970

Adler, S S; Aidala, C; Aronson, S H; Chujo, T; David, G; Desmond, E J; Ewell, L; Franz, A; Guryn, W; Haggerty, J S; Harvey, M; Johnson, B M; Kistenev, E; Kroon, P J; Makdisi, Y I; Mioduszewski, S; Mitchell, J T; Morrison, D P; O'Brien, E; Pinkenburg, C ^[1]

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1. Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)

The invariant differential cross section for inclusive electron production in p+p collisions at {radical}(s)=200 GeV has been measured by the PHENIX experiment at the BNL Relativistic Heavy Ion Collider over the transverse momentum range 0.4{<=}p{sub T}{<=}5.0 GeV/c in the central rapidity region (vertical bar {eta} vertical bar {<=}0.35). The contribution to the inclusive electron spectrum from semileptonic decays of hadrons carrying heavy flavor, i.e., charm quarks or, at high p{sub T}, bottom quarks, is determined via three independent methods. The resulting electron spectrum from heavy-flavor decays is compared to recent leading and next-to-leading order perturbative QCD calculations. The total cross section of charm quark-antiquark pair production is determined to be {sigma}{sub cc}=0.92{+-}0.15(stat){+-}0.54(syst) mb.

• OSTI ID: 20776970
• Journal Information: Physical Review Letters, Vol. 96, Issue 3; Other Information: DOI: 10.1103/PhysRevLett.96.032001; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B QUARKS
BROOKHAVEN RHIC
CHARM PARTICLES
DIFFERENTIAL CROSS SECTIONS
ELECTRON SPECTRA
ELECTRONS
FLAVOR MODEL
GEV RANGE 100-1000
INCLUSIVE INTERACTIONS
LEPTONIC DECAY
MESONS
PAIR PRODUCTION
PARTICLE RAPIDITY
PROTON-PROTON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUARK-ANTIQUARK INTERACTIONS
RESONANCE PARTICLES
SEMILEPTONIC DECAY
TOTAL CROSS SECTIONS
TRANSVERSE MOMENTUM