Journal article
Search for new particles decaying to a jet and an emerging jet
Journal of high energy physics : JHEP, Vol.2019(2), 179
02/26/2019
DOI: 10.1007/JHEP02(2019)179
Abstract
A search is performed for events consistent with the pair production of a new heavy particle that acts as a mediator between a dark sector and normal matter, and that decays to a light quark and a new fermion called a dark quark. The search is based on data corresponding to an integrated luminosity of 16.1 fb−1 from proton-proton collisions at s√=13 TeV collected by the CMS experiment at the LHC in 2016. The dark quark is charged only under a new quantum-chromodynamics-like force, and forms an “emerging jet” via a parton shower, containing long-lived dark hadrons that give rise to displaced vertices when decaying to standard model hadrons. The data are consistent with the expectation from standard model processes. Limits are set at 95% confidence level excluding dark pion decay lengths between 5 and 225 mm for dark mediators with masses between 400 and 1250 GeV. Decay lengths smaller than 5 and greater than 225 mm are also excluded in the lower part of this mass range. The dependence of the limit on the dark pion mass is weak for masses between 1 and 10 GeV. This analysis is the first dedicated search for the pair production of a new particle that decays to a jet and an emerging jet.
Details
- Title: Subtitle
- Search for new particles decaying to a jet and an emerging jet
- Creators
- CMS Collaboration
- Contributors
- M. Alhusseini (Contributor) - University of IowaB Bilki (Contributor) - University of Iowa, Physics and AstronomyW Clarida (Contributor)K Dilsiz (Contributor) - University of Iowa, Physics and AstronomyS. Durgut (Contributor) - University of IowaR. P. Gandrajula (Contributor) - University of IowaM. Haytmyradov (Contributor) - University of IowaV. Khristenko (Contributor) - University of IowaJ-P Merlo (Contributor) - University of IowaA Mestvirishvili (Contributor) - University of Iowa, Physics and AstronomyA Moeller (Contributor) - University of IowaJ Nachtman (Contributor) - University of Iowa, Physics and AstronomyH Ogul (Contributor) - University of Iowa, Physics and AstronomyY Onel (Contributor) - University of Iowa, Physics and AstronomyA Penzo (Contributor) - University of Iowa, Physics and AstronomyC. Snyder (Contributor) - University of IowaE Tiras (Contributor) - University of Iowa, Physics and AstronomyJ Wetzel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Journal of high energy physics : JHEP, Vol.2019(2), 179
- DOI
- 10.1007/JHEP02(2019)179
- ISSN
- 1126-6708
- eISSN
- 1029-8479
- Publisher
- Springer
- Language
- English
- Date published
- 02/26/2019
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984443734802771
Metrics
8 Record Views