Article
Measurement of Bottom versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations in p plus p Collisions at s=200 GeV
Physical Review Letters
Document Type
Article
Disciplines
Publication Version
Published Version
Publication Date
8-1-2009
DOI
10.1103/PhysRevLett.103.082002
Abstract
The momentum distribution of electrons from semileptonic decays of charm and bottom quarks for midrapidity |y|< 0.35 in p+p collisions at s=200 GeV is measured by the PHENIX experiment at the Relativistic Heavy Ion Collider over the transverse momentum range 2 < p(T)< 7 GeV/c. The ratio of the yield of electrons from bottom to that from charm is presented. The ratio is determined using partial D/D -> e(+/-)K(-/+)X (K unidentified) reconstruction. It is found that the yield of electrons from bottom becomes significant above 4 GeV/c in p(T). A fixed-order-plus-next-to-leading-log perturbative quantum chromodynamics calculation agrees with the data within the theoretical and experimental uncertainties. The extracted total bottom production cross section at this energy is sigma(bb)=3.2(-1.1)(+1.2)(stat)(-1.3)(+1.4)(syst)mu b.
Copyright Owner
American Physical Society
Copyright Date
2009
Language
en
File Format
application/pdf
Citation Information
Andrew Adare, Nathan C. Grau, John C. Hill, Todd Kempel, et al.. "Measurement of Bottom versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations in p plus p Collisions at s=200 GeV" Physical Review Letters Vol. 103 Iss. 8 (2009) p. 082002 Available at: http://works.bepress.com/craig-ogilvie/176/
This article is published as Adare, Ad, S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, H. Al-Bataineh, J. Alexander et al. "Measurement of Bottom Versus Charm as a Function of Transverse Momentum with Electron-Hadron Correlations in p+ p Collisions at s= 200 GeV." Physical review letters 103, no. 8 (2009): 082002. DOI:10.1103/PhysRevLett.103.082002. Posted with permission.