Preprint PUBDB-2023-06301

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Search for supersymmetry in final states with disappearing tracks in proton-proton collisions at $\sqrt{s}$ = 13 TeV

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2023

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Report No.: CERN-EP-2023-209; CMS-SUS-21-006; arXiv:2309.16823

Abstract: A search is presented for charged, long-lived supersymmetric particles in final states with one or more disappearing tracks. The search is based on data from proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS detector at the CERN LHC between 2016 and 2018, corresponding to an integrated luminosity of 137 fb$^{-1}$. The search is performed over final states characterized by varying numbers of jets, b-tagged jets, electrons, and muons. The length of signal-candidate tracks in the plane perpendicular to the beam axis is used to characterize the lifetimes of wino- and higgsino-like charginos produced in the context of the minimal supersymmetric standard model. The d$E$/d$x$ energy loss of signal-candidate tracks is used to increase the sensitivity to charginos with a large mass and thus a small Lorentz boost. The observed results are found to be statistically consistent with the background-only hypothesis. Limits on the pair production cross section of gluinos and squarks are presented in the framework of simplified models of supersymmetric particle production and decay, and for electroweakino production based on models of wino and higgsino dark matter. The limits presented are the most stringent to date for scenarios with light third-generation squarks and a wino- or higgsino-like dark matter candidate capable of explaining the known dark matter relic density.

Keyword(s): p p, scattering ; family, 3 ; sparticle, production ; dark matter, relic density ; sparticle, long-lived ; tracks ; squark ; chargino ; TeV ; muon ; energy loss ; electron ; CERN Lab ; sensitivity ; CERN LHC Coll ; gluino ; minimal supersymmetric standard model ; pair production ; Lorentz ; lifetime ; supersymmetry ; CMS


Note: Submitted to Physical Review D. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-21-006 (CMS Public Pages)

Contributing Institute(s):
  1. LHC/CMS Experiment (CMS)
Research Program(s):
  1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
  2. HIDSS-0002 - DASHH: Data Science in Hamburg - Helmholtz Graduate School for the Structure of Matter (2019_IVF-HIDSS-0002) (2019_IVF-HIDSS-0002)
  3. DFG project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe (390833306) (390833306)
  4. GRK 2497 - GRK 2497: Physik der schwersten Teilchen am Large Hadron Collider (400140256) (400140256)
Experiment(s):
  1. LHC: CMS

Appears in the scientific report 2023
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Creative Commons Attribution CC BY 4.0 ; OpenAccess ; Published
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Search for supersymmetry in final states with disappearing tracks in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Physical review / D 109(7), 072007 () [10.1103/PhysRevD.109.072007]  GO OpenAccess  Download fulltext Files  Download fulltextFulltext Download fulltextFulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS


 Record created 2023-10-20, last modified 2024-12-06


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