An additional study of multi-muon events produced in pp̅ collisions at √s = 1.96 TeV
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Aaltonen-2012-An additional study.pdf
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Author(s)
CDF Collaboration
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Makhoul, Khaldoun
Paus, Christoph M. E.
Date Issued
April 2012
Journal
Physics Letters B
Publisher
Elsevier B.V.
Citation
Aaltonen, T., B. Álvarez González, S. Amerio, D. Amidei, A. Anastassov, A. Annovi, J. Antos, et al. “An additional study of multi-muon events produced in pp̅ collisions at √s = 1.96 TeV.” Physics Letters B 710, no. 2 (April 2012): 278–283.
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Final published version
Abstract
We present one additional study of multi-muon events produced at the Fermilab Tevatron collider and recorded by the CDF II detector. We use a data set acquired with a dedicated dimuon trigger and corresponding to an integrated luminosity of 3.9 fb[superscript −1]. We investigate the distribution of the azimuthal angle between the two trigger muons in events containing at least four additional muon candidates to test the compatibility of these events with originating from known QCD processes. We find that this distribution is markedly different from what is expected from such QCD processes and this observation strongly disfavors the possibility that multi-muon events result from an underestimate of the rate of misidentified muons in ordinary QCD events.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2012.02.081
