Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7701
Title: Search for new long-lived particles at s=13 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Long-lived particles
CMS experiment
Higgs physics
Issue Date: May-2018
Publisher: Elsevier Ltd.
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Search for new long-lived particles at √s=13 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 780, 432-454. doi:10.1016/j.physletb.2018.03.019
Abstract: 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.
URI: https://doi.org/10.1016/j.physletb.2018.03.019
https://hdl.handle.net/11147/7701
ISSN: 0370-2693
0370-2693
Appears in Collections:Mathematics / Matematik
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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