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Search for heavy metastable particles decaying to jet pairs in pp̅ collisions at √s=1.96  TeV

Author(s)
Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Makhoul, Khaldoun; Paus, Christoph M. E.; Bauer, Gerry P
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Abstract
A search is performed for heavy metastable particles that decay into jet pairs with a macroscopic lifetime (cτ∼1  cm) in pp̅ collisions at √s=1.96  TeV using data from the CDF II detector at Fermilab corresponding to an integrated luminosity of 3.2  fb[superscript -1]. To estimate the standard model background, a data-driven approach is used. Probability-density functions are constructed to model secondary vertices from known processes. No statistically significant excess is observed above the background. Limits on the production cross section in a hidden valley benchmark phenomenology are set for various Higgs boson masses as well as metastable particle masses and lifetimes.
Date issued
2012-01
URI
http://hdl.handle.net/1721.1/72185
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
Aaltonen, T. et al. “Search for heavy metastable particles decaying to jet pairs in pp̅ collisions at √s=1.96  TeV.” Physical Review D 85.1 (2012). © 2012 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918

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