Search for low mass vector resonances decaying into quark-antiquark pairs in proton-proton collisions at √s=13 TeV
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 √ s = 13 TeV with the CMS detector at the LHC, corresponding to an integrated luminosity of 35.9 fb−1 . The hypothetical resonance is pr...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Springer Nature
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/65216/ http://irep.iium.edu.my/65216/ http://irep.iium.edu.my/65216/ http://irep.iium.edu.my/65216/1/65216_Search%20for%20low%20mass%20vector%20resonances%20decaying_article.pdf http://irep.iium.edu.my/65216/2/65216_Search%20for%20low%20mass%20vector%20resonances%20decaying_scopus.pdf http://irep.iium.edu.my/65216/13/65216%20Search%20for%20low%20mass%20vector%20resonances%20decaying%20into%20quark-antiquark%20pairs%20in%20proton-proton%20collisions%20at%20%E2%88%9As%3D13%20TeV_wos.pdf |
| Summary: | 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 √
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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