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Measurement of Z gamma production in pp[over-bar] collisions at [sqrt]s=1.96 TeV

Author(s)
Paus, Christoph M. E.; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Bauer, Gerry P; Makhoul, Khaldoun
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Alternative title
Measurement of Zγ production in pp̅ collisions at √s=1.96  TeV
Terms of use
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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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.
Date issued
2010-08
URI
http://hdl.handle.net/1721.1/60407
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
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
ISSN
1550-7998
1550-2368

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