Search for fractionally charged particles in pp collisions at √s=7 TeV
Name
Chatrchyan-2013-Search for fractionally charged.pdf
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369.33 KB
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Author(s)
Apyan, Aram
Bendavid, Joshua L.
Busza, Wit
Butz, Erik M.
Cali, Ivan Amos
Chan, M.
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Hahn, Kristian Allan
Kim, Y.
Date Issued
May 2013
Journal
Physical Review D
Publisher
American Physical Society
Citation
Chatrchyan, S., V. Khachatryan, A. M. Sirunyan, A. Tumasyan, W. Adam, E. Aguilo, T. Bergauer, et al. “Search for fractionally charged particles in pp collisions at sqrt[s]=7 TeV.” Physical Review D 87, no. 9 (May 2013). © 2013 CERN
Version
Final published version
Abstract
A search is presented for free heavy long-lived fractionally charged particles produced in pp collisions at √s=7 TeV. The data sample was recorded by the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb[superscript -1]. Candidate fractionally charged particles are identified by selecting tracks with associated low charge measurements in the silicon tracking detector. Observations are found to be consistent with expectations for background processes. The results of the search are used to set upper limits on the cross section for pair production of fractionally charged, massive spin-1/2 particles that are neutral under SU(3)[subscript C] and SU(2)[subscript L]. We exclude at 95% confidence level such particles with electric charge ±2e/3 with masses below 310 GeV, and those with charge ±e/3 with masses below 140 GeV.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Massachusetts Institute of Technology. School of Science
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Creative Commons Attribution 3.0
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevD.87.092008
