Measurement of Z gamma production in pp[over-bar] collisions at [sqrt]s=1.96 TeV
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Aaltonen-2010-Measurement of Z gam.pdf
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Author(s)
Paus, Christoph M. E.
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Bauer, Gerry P
Makhoul, Khaldoun
Alternative Title
Measurement of Zγ production in pp̅ collisions at √s=1.96 TeV
Date Issued
August 2010
Journal
Physical Review D
Publisher
American Physical Society
Citation
CDF Collaboration et al. “Measurement of Z gamma production in pp[over-bar] collisions at sqrt[s]=1.96 TeV.” Physical Review D 82.3 (2010): 031103. © 2010 The American Physical Society.
Version
Final published version
Abstract
The production rate and kinematics of photons produced in association with Z bosons are studied using 2 fb-1 of pp[over-bar] collision data collected at the Collider Detector at Fermilab. The cross section for pp[over-bar] -->ℓ+ℓ-γ+X (where the leptons ℓ are either muons or electrons with dilepton mass Mℓℓ>40 GeV/c[superscript 2], and where the photon has transverse energy ETγ>7 GeV and is well separated from the leptons) is 4.6±0.2(stat)±0.3(syst)±0.3(lum) pb, which is consistent with standard model expectations. We use the photon ET distribution from Zγ events where the Z has decayed to mu+mu-, e+e-, or nu nu[over-bar]to set limits on anomalous (non standard model) trilinear couplings between photons and Z bosons.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.82.031103
