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

Barton, Adam Edward and Beattie, Michael and Bertram, Iain Alexander and Borissov, Guennadi and Bouhova-Thacker, Evelina Vassileva and Dearnaley, William and Fox, Harald and Henderson, Robert Charles William and Jones, Roger William Lewis and Kartvelishvili, Vakhtang and Long, Robin Eamonn and Love, Peter Allan and Muenstermann, Daniel Matthias Alfred and Parker, Adam Jackson and Skinner, Malcolm and Smizanska, Maria and Walder, James William and Wharton, Andrew Mark and Whitmore, Ben (2018) Search for long-lived, massive particles in events with displaced vertices and missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector. Physical Review D, 97 (5). ISSN 1550-7998

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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.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
ID Code:
126626
Deposited By:
Deposited On:
30 Jul 2018 09:50
Refereed?:
Yes
Published?:
Published
Last Modified:
24 Mar 2020 07:55