Measurement of the cross-section for $Z to e^+e^-$ production in $pp$ collisions at $s=7$ TeV

The LHCb Collaboration, Matthew Needham, Franz Muheim, Peter Clarke, Yuehong Xie, Stephan Eisenhardt

Research output: Contribution to journalArticlepeer-review


A measurement of the cross-section for pp → Z → e+e− is presented using data at TeX TeV corresponding to an integrated luminosity of 0.94 fb−1. The process is measured within the kinematic acceptance p T > 20 GeV/c and 2 < η < 4.5 for the daughter electrons and dielectron invariant mass in the range 60–120 GeV/c 2. The cross-section is determined to be TeX 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.
Original languageEnglish
Pages (from-to)106
Number of pages1
JournalJournal of High Energy Physics
Early online date19 Dec 2012
Publication statusPublished - Feb 2013


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