Search for long-lived neutral particles in pp collisions at root s=13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter

Çetin, Serkant Ali2020-12-292020-12-292019-06-071434-60521434-6044https://hdl.handle.net/11411/3017https://doi.org/10.1140/epjc/s10052-019-6962-6This paper describes a search for pairs of neutral, long-lived particles decaying in the ATLAS calorimeter. Long-lived particles occur in many extensions to the Standard Model and may elude searches for new promptly decaying particles. The analysis considers neutral, long-lived scalars with masses between 5 and 400 GeV, produced from decays of heavy bosons with masses between 125 and 1000 GeV, where the long-lived scalars decay into Standard Model fermions. The analysis uses either 10.8 fb-1 of data (depending on the trigger) recorded in 2016 at the LHC with the ATLAS detector in proton-proton collisions at a centre-of-mass energy of 13 TeV. No significant excess is observed, and limits are reported on the production cross section times branching ratio as a function of the proper decay length of the long-lived particles.eninfo:eu-repo/semantics/openAccessPARTON DISTRIBUTIONSHIGGSSearch for long-lived neutral particles in pp collisions at root s=13 TeV that decay into displaced hadronic jets in the ATLAS calorimeterArticle2-s2.0-8506704591310.1140/epjc/s10052-019-6962-6Q1WOS:000470781800001