Search for long-lived, massive particles in events with displaced vertices and missing transverse momentum in root S=13 TeV pp collisions with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, B Abeloos, S.H. Abidi, Ossama Sherif Alexander Abouzeid, NL Abraham, H. Abramowicz, H. Abreu, R. Abreu, Y. Abulaiti, B.S. Acharya, Sosuke Adachi, L. Adamczyk, J Adelman, M. Adersberger, T. Adye, A. A. Affolder, T. Agatonovic-JovinC. Agheorghiesei, J. A. Aguilar-Saavedra, S. P. Ahlen, F. Ahmadov, G. Aielli, Mogens Dam, Jørn Dines Hansen, Jørgen Beck Hansen, Stefania Xella, Peter Henrik Hansen, Troels Christian Petersen, Alejandro Alonso Diaz, James William Monk, Graig Wiglesworth, Gorm Aske Gram Krohn Galster, Simon Holm Stark, Geert-Jan Besjes, Milena Bajic, Fabian Alexander Jürgen Thiele, Flavia de Almeida Dias

76 Citations (Scopus)
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Abstract

A search for long-lived, massive particles predicted by many theories beyond the Standard Model is presented. The search targets final states with large missing transverse momentum and at least one high-mass displaced vertex with five or more tracks, and uses 32.8 fb-1 of s=13 TeV pp collision data collected by the ATLAS detector at the LHC. The observed yield is consistent with the expected background. The results are used to extract 95% C.L. exclusion limits on the production of long-lived gluinos with masses up to 2.37 TeV and lifetimes of O(10-2)-O(10) ns in a simplified model inspired by split supersymmetry.

Original languageEnglish
Article number052012
JournalPhysical Review D
Volume97
Issue number5
Number of pages29
ISSN2470-0010
DOIs
Publication statusPublished - 1 Mar 2018

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