Search for pair-produced resonances decaying to quark pairs in proton-proton collisions at s =13 TeV
A general search for the pair production of resonances, each decaying to two quarks, is reported. The search is conducted separately for heavier resonances (masses above 400 GeV), where each of the four final-state quarks generates a hadronic jet resulting in a four-jet signature, and for lighter...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
American Physical Society
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/70732/ http://irep.iium.edu.my/70732/ http://irep.iium.edu.my/70732/ http://irep.iium.edu.my/70732/1/70732_Search%20for%20pair-produced%20resonances%20decaying%20to%20quark_article.pdf http://irep.iium.edu.my/70732/2/70732_Search%20for%20pair-produced%20resonances%20decaying%20to%20quark_scopus.pdf |
| Summary: | A general search for the pair production of resonances, each decaying to two quarks, is reported. The
search is conducted separately for heavier resonances (masses above 400 GeV), where each of the four
final-state quarks generates a hadronic jet resulting in a four-jet signature, and for lighter resonances
(masses between 80 and 400 GeV), where the pair of quarks from each resonance is collimated and
reconstructed as a single jet resulting in a two-jet signature. In addition, a b-tagged selection is applied to
target resonances with a bottom quark in the final state. The analysis uses data collected with the CMS
detector at the CERN LHC, corresponding to an integrated luminosity of 35.9 fb−1, from proton-proton
collisions at a center-of-mass energy of 13 TeV. The mass spectra are analyzed for the presence of new
resonances, and are found to be consistent with standard model expectations. The results are interpreted in
the framework of R-parity-violating supersymmetry assuming the pair production of scalar top quarks
decaying via the hadronic coupling λ00
312 or λ00
323 and upper limits on the cross section as a function of the top
squark mass are set. These results probe a wider range of masses than previously explored at the LHC, and
extend the top squark mass limits in the ˜t → qq0 scenario. |
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