TY - JOUR
T1 - Measurements of e+e- pairs from open heavy flavor in p+p and d+A collisions at s NN =200 GeV
AU - Adare, A
AU - Afanasiev, S
AU - Aidala, C.
AU - Ajitanand, N. N.
AU - Akiba, Y.
AU - Al-Bataineh, H
AU - Gustafsson, Hans-Åke
AU - Haslum, Eva
AU - Oskarsson, Anders
AU - Rosendahl, Sarah
AU - Silvermyr, David
AU - Stenlund, Evert
AU - PHENIX Collaboration
N1 - Cited By :1
Export Date: 18 January 2018
PY - 2017
Y1 - 2017
N2 - We report a measurement of e+e- pairs from semileptonic heavy-flavor decays in p+p collisions at sNN=200 GeV. The e+e- pair yield from bb and cc is separated by exploiting a double differential fit done simultaneously in dielectron invariant mass and pT. We used three different event generators, pythia, mc@nlo, and powheg, to simulate the e+e- spectra from cc and bb production. The data can be well described by all three generators within the detector acceptance. However, when using the generators to extrapolate to 4π, significant differences are observed for the total cross section. These difference are less pronounced for bb than for cc. The same model dependence was observed in already published d+A data. The p+p data are also directly compared with d+A data in mass and pT, and within the statistical accuracy no nuclear modification is seen. © 2017 American Physical Society.
AB - We report a measurement of e+e- pairs from semileptonic heavy-flavor decays in p+p collisions at sNN=200 GeV. The e+e- pair yield from bb and cc is separated by exploiting a double differential fit done simultaneously in dielectron invariant mass and pT. We used three different event generators, pythia, mc@nlo, and powheg, to simulate the e+e- spectra from cc and bb production. The data can be well described by all three generators within the detector acceptance. However, when using the generators to extrapolate to 4π, significant differences are observed for the total cross section. These difference are less pronounced for bb than for cc. The same model dependence was observed in already published d+A data. The p+p data are also directly compared with d+A data in mass and pT, and within the statistical accuracy no nuclear modification is seen. © 2017 American Physical Society.
UR - https://www.scopus.com/pages/publications/85028775869
U2 - 10.1103/PhysRevC.96.024907
DO - 10.1103/PhysRevC.96.024907
M3 - Article
SN - 2469-9985
VL - 96
JO - Physical Review C
JF - Physical Review C
IS - 2
M1 - 024907
ER -