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Title
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Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at =13 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A search for narrow vector resonances decaying into quark-antiquark pairs is presented. The analysis is based on data collected in proton-proton collisions at root s = 13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb(-1). The hypothetical resonance is produced with sufficiently high transverse momentum that its decay products are merged into a single jet with two-prong substructure. A signal would be identified as a peak over a smoothly falling background in the distribution of the invariant mass of the jet, using novel jet substructure techniques. No evidence for such a resonance is observed within the mass range of 50-300 GeV. Upper limits at 95% confidence level are set on the production cross section, and presented in a mass-coupling parameter space. The limits further constrain simplified models of dark matter production involving a mediator interacting between quarks and dark matter particles through a vector or axial-vector current. In the framework of these models, the results are the most sensitive to date, extending for the first time the search region to masses below 100 GeV. |
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Language
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English
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Source (journal)
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Journal of high energy physics. - Bristol
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Publication
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Bristol
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2018
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ISSN
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1126-6708
1029-8479
[online]
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DOI
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10.1007/JHEP01(2018)097
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Volume/pages
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1
(2018)
, 41 p.
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Article Reference
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097
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ISI
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000423442300001
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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