Back to Search
Start Over
Measurement of bottom versus charm as a function of transverse momentum with electron-hadron correlations in p + p collisions at square root of s = 200 GeV.
- Source :
-
Physical review letters [Phys Rev Lett] 2009 Aug 21; Vol. 103 (8), pp. 082002. Date of Electronic Publication: 2009 Aug 18. - Publication Year :
- 2009
-
Abstract
- The momentum distribution of electrons from semileptonic decays of charm and bottom quarks for midrapidity |y|<0.35 in p+p collisions at square root of s=200 GeV is measured by the PHENIX experiment at the Relativistic Heavy Ion Collider over the transverse momentum range 2<pT<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 pT. 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)mub.
Details
- Language :
- English
- ISSN :
- 0031-9007
- Volume :
- 103
- Issue :
- 8
- Database :
- MEDLINE
- Journal :
- Physical review letters
- Publication Type :
- Academic Journal
- Accession number :
- 19792719
- Full Text :
- https://doi.org/10.1103/PhysRevLett.103.082002