Search for supersymmetry in final states with charm jets and missing transverse momentum in 13 TeV pp collisions with the ATLAS detector

2018/05/31 by M. Aaboud, ATLAS Collaboration, G. Aad +98 · 1 citation
Physics and Astronomy · #Algorithm #Computer science #Database #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1007/jhep09(2018)050

published as JHEP 09 (2018) 050 · 43 pages in total, author list starting page 27, 7 figures, 7 tables, submitted to JHEP, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/SUSY-2016-26/

openalex created_date 2018/06/01 · openalex publication_date 2018/09/01 · arxiv created 2018/10/09 · arxiv updated 2018/10/11 · openalex updated_date 2026/08/06

Abstract

A bstract A search for supersymmetric partners of top quarks decaying as t₁→ c\upchi₁⁰ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mover><mml:mi>t</mml:mi><mml:mo>˜</mml:mo></mml:mover><mml:mn>1</mml:mn></mml:msub><mml:mo>→</mml:mo><mml:mi>c</mml:mi><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>˜</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:math> and supersymmetric partners of charm quarks decaying as c₁→ c\upchi₁⁰ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mover><mml:mi>c</mml:mi><mml:mo>˜</mml:mo></mml:mover><mml:mn>1</mml:mn></mml:msub><mml:mo>→</mml:mo><mml:mi>c</mml:mi><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>˜</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:math> , where \upchi₁⁰ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>˜</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:math> is the lightest neutralino, is presented. The search uses 36.1 fb −1 pp collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS experiment at the Large Hadron Collider and is performed in final states with jets identified as containing charm hadrons. Assuming a 100% branching ratio to c\upchi₁⁰ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>c</mml:mi><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>˜</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:math> , top and charm squarks with masses up to 850 GeV are excluded at 95% confidence level for a massless lightest neutralino. For m_t₁,c₁-m_\upchi₁⁰ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>m</mml:mi><mml:mrow><mml:msub><mml:mover><mml:mi>t</mml:mi><mml:mo>˜</mml:mo></mml:mover><mml:mn>1</mml:mn></mml:msub><mml:mo>,</mml:mo><mml:msub><mml:mover><mml:mi>c</mml:mi><mml:mo>˜</mml:mo></mml:mover><mml:mn>1</mml:mn></mml:msub></mml:mrow></mml:msub><mml:mo>−</mml:mo><mml:msub><mml:mi>m</mml:mi><mml:msubsup><mml:mover><mml:mi>χ</mml:mi><mml:mo>˜</mml:mo></mml:mover><mml:mn>1</mml:mn><mml:mn>0</mml:mn></mml:msubsup></mml:msub></mml:math> &lt; 100 GeV, top and charm squark masses up to 500 GeV are excluded.

Citations

• Search for Scalar Charm Quark Pair Production inppCollisions ats=8 TeVwith the ATLAS Detector
• Supergauge transformations in four dimensions
• Event generation with SHERPA 1.1
• Presentation of search results: theCLstechnique
• Is the neutrino a goldstone particle?
• Scattering Amplitudes with Open Loops
• The anti-ktjet clustering algorithm
• Supersymmetric relics from the big bang
• Search for pair-produced third-generation squarks decaying via charm quarks or in compressed supersymmetric scenarios inppcollisions ats=8 TeVwith the ATLAS detector
• Parton distributions for the LHC run II

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