Search for new long-lived particles at s=13 TeV
A search for long-lived particles was performed with data corresponding to an integrated luminosity of 2.6 fb−1 collected at a center-of-mass energy of 13 TeV by the CMS experiment in 2015. The analysis exploits two customized topological trigger algorithms, and uses the multiplicity of displaced...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Elsevier
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/65243/ http://irep.iium.edu.my/65243/ http://irep.iium.edu.my/65243/ http://irep.iium.edu.my/65243/1/65243_Search%20for%20new%20long-lived%20particles_article.pdf http://irep.iium.edu.my/65243/2/65243_Search%20for%20new%20long-lived%20particles_scopus.pdf http://irep.iium.edu.my/65243/13/65243%20Search%20for%20new%20long-lived%20particles%20at%20s%3D13%20TeV_wos.pdf |
| Summary: | A search for long-lived particles was performed with data corresponding to an integrated luminosity of
2.6 fb−1 collected at a center-of-mass energy of 13 TeV by the CMS experiment in 2015. The analysis
exploits two customized topological trigger algorithms, and uses the multiplicity of displaced jets to
search for the presence of a signal decay occurring at distances between 1 and 1000 mm. The results can
be interpreted in a variety of different models. For pair-produced long-lived particles decaying to two b
quarks and two leptons with equal decay rates between lepton flavors, cross sections larger than 2.5 fb
are excluded for proper decay lengths between 70–100 mm for a long-lived particle mass of 1130 GeV
at 95% confidence. For a specific model of pair-produced, long-lived top squarks with R-parity violating
decays to a b quark and a lepton, masses below 550–1130 GeV are excluded at 95% confidence for equal
branching fractions between lepton flavors, depending on the squark decay length. This mass bound is
the most stringent to date for top squark proper decay lengths greater than 3 mm |
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