Measurement of the cross-section for Z → e[superscript +]e[superscript -] production in pp collisions at √s =7 TeV
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Williams_Measurement of the cross-section.pdf
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Author(s)
Williams, Michael
Alternative Title
Measurement of the cross-section for Z → e+e- production in pp collisions at √s =7 TeVs
Date Issued
February 2013
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag/SISSA
Citation
Aaij, R., C. Abellan Beteta, A. Adametz, B. Adeva, M. Adinolfi, C. Adrover, et al. “Measurement of the Cross-Section for Z → e[superscript +]e[superscript -] Production in Pp Collisions at √s =7 TeV.” Journal of High Energy Physics 2013, no. 2 (February 2013). 106. © 2013 CERN for the benefit of the LHCb collaboration
Version
Final published version
Abstract
A measurement of the cross-section for pp → Z → e[superscript +]e[superscript −] is presented using data at √s = 7 TeV corresponding to an integrated luminosity of 0.94 fb[superscript −1]. The process is measured within the kinematic acceptance pT > 20 GeV/c and 2 < η < 4.5 for the daughter electrons and dielectron invariant mass in the range 60–120 GeV/c[superscript 2]. The cross-section is determined to be
σ(pp→Z→e[superscript +]e[superscript −]) = 76.0±0.8±2.0±2.6 pb where the first uncertainty is statistical, the second is systematic and the third is the uncertainty in the luminosity. The measurement is performed as a function of Z rapidity and as a function of an angular variable which is closely related to the Z transverse momentum. The results are compared with previous LHCb measurements and with theoretical predictions from QCD.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1007/jhep02(2013)106
