Search for Narrow Resonances in Dijet Final States at √s = 8 TeV with the Novel CMS Technique of Data Scouting
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Search for narrow.pdf
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Author(s)
Apyan, Aram
Barbieri, Richard Alexander
Baty, Austin Alan
Bi, Ran
Bierwagen, Katharina
Brandt, Stephanie Akemi
Busza, Wit
Cali, Ivan Amos
Demiragli, Zeynep
Di Matteo, Leonardo
Date Issued
July 2016
Journal
Physical Review Letters
Publisher
Elsevier
Citation
Khachatryan, V. et al. “Search for Narrow Resonances in Dijet Final States at √s =8 TeV with the Novel CMS Technique of Data Scouting.” Physical Review Letters 117.3 (2016): n. pag. © 2016 CERN for the CMS Collaboration
Version
Final published version
Abstract
A search for narrow resonances decaying into dijet final states is performed on data from proton-proton collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 18.8 fb[superscript −1]. The data were collected with the CMS detector using a novel technique called data scouting, in which the information associated with these selected events is much reduced, permitting collection of larger data samples. This technique enables CMS to record events containing jets at a rate of 1 kHz, by collecting the data from the high-level-trigger system. In this way, the sensitivity to low-mass resonances is increased significantly, allowing previously inaccessible couplings of new resonances to quarks and gluons to be probed. The resulting dijet mass distribution yields no evidence of narrow resonances. Upper limits are presented on the resonance cross sections as a function of mass, and compared with a variety of models predicting narrow resonances. The limits are translated into upper limits on the coupling of a leptophobic resonance Z′[subscript B] to quarks, improving on the results obtained by previous experiments for the mass range from 500 to 800 GeV.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 3.0 Unported licence
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.117.031802
