Search for electroweak production of charginos and neutralinos at <math altimg="si1.svg"><msqrt><mrow><mi>s</mi></mrow></msqrt><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>13</mn><mspace width="0.25em"/><mtext>TeV</mtext></math> in final states containing hadronic decays of WW, WZ, or WH and missing transverse momentum

Benecke, Anna;Bethani, Agni;Bruno, Giacomo;Bury, Florian;CMS;et.al.
(2023) Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 842 (2023)

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Authors
  • Benecke, AnnaUCLouvain
    Author
  • Bethani, Agniorcid-logoUCLouvain
    Author
  • Bruno, GiacomoUCLouvain
    Author
  • Bury, FlorianUCLouvain
    Author
  • Caputo, ClaudioUCLouvain
    Author
  • David, PieterUCLouvain
    Author
  • Delaere, Christopheorcid-logoUCLouvain
    Author
  • Donertas, Izzeddin SuatUCLouvain
    Author
  • Giammanco, AndreaUCLouvain
    Author
  • Jaffel, KhawlaUCLouvain
    Author
  • Jain, SandhyaUCLouvain
    Author
  • Lemaitre, VincentUCLouvain
    Author
  • Mondal, KuntalUCLouvain
    Author
  • Prisciandaro, JessicaUCLouvain
    Author
  • Taliercio, AngelaUCLouvain
    Author
  • Teklishyn, MaksymUCLouvain
    Author
  • Tran, Tu ThongUCLouvain
    Author
  • Vischia, PietroUCLouvain
    Author
  • Wertz, SébastienUCLouvain
    Author
  • CMS
    Author
  • et. al.
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Abstract
This Letter presents a search for direct production of charginos and neutralinos via electroweak interactions. The results are based on data from proton-proton collisions at a center-of-mass energy of 13 TeV collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 137 <math altimg="si2.svg"><msup><mrow><mtext>fb</mtext></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">−</mo><mn>1</mn></mrow></msup></math>. The search considers final states with large missing transverse momentum and pairs of hadronically decaying bosons <math altimg="si3.svg"><mi mathvariant="normal">W</mi><mi mathvariant="normal">W</mi></math>, <math altimg="si18.svg"><mi mathvariant="normal">W</mi><mi mathvariant="normal">Z</mi></math>, and <math altimg="si19.svg"><mi mathvariant="normal">W</mi><mi mathvariant="normal">H</mi></math>, where H is the Higgs boson. These bosons are identified using novel algorithms. No significant excess of events is observed relative to the expectations from the standard model. Limits at the 95% confidence level are placed on the cross section for production of mass-degenerate wino-like supersymmetric particles <math altimg="si6.svg"><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>1</mn></mrow><mrow><mo>±</mo></mrow></msubsup></math> and <math altimg="si7.svg"><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>2</mn></mrow><mrow><mn>0</mn></mrow></msubsup></math>, and mass-degenerate higgsino-like supersymmetric particles <math altimg="si6.svg"><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>1</mn></mrow><mrow><mo>±</mo></mrow></msubsup></math>, <math altimg="si7.svg"><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>2</mn></mrow><mrow><mn>0</mn></mrow></msubsup></math>, and <math altimg="si8.svg"><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>3</mn></mrow><mrow><mn>0</mn></mrow></msubsup></math>. In the limit of a nearly-massless lightest supersymmetric particle <math altimg="si9.svg"><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>1</mn></mrow><mrow><mn>0</mn></mrow></msubsup></math>, wino-like particles with masses up to 870 and 960 GeV are excluded in the cases of <math altimg="si10.svg"><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>2</mn></mrow><mrow><mn>0</mn></mrow></msubsup><mo stretchy="false">→</mo><mi mathvariant="normal">Z</mi><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>1</mn></mrow><mrow><mn>0</mn></mrow></msubsup></math> and <math altimg="si11.svg"><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>2</mn></mrow><mrow><mn>0</mn></mrow></msubsup><mo stretchy="false">→</mo><mi mathvariant="normal">H</mi><msubsup><mrow><mover accent="true"><mrow><mi mathvariant="normal">χ</mi></mrow><mrow><mo>˜</mo></mrow></mover></mrow><mrow><mn>1</mn></mrow><mrow><mn>0</mn></mrow></msubsup></math>, respectively, and higgsino-like particles are excluded between 300 and 650 GeV.
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Benecke, A., Bethani, A., Bruno, G., Bury, F., Caputo, C., David, P., Delaere, C., Donertas, I. S., Giammanco, A., Jaffel, K., Jain, S., Lemaitre, V., Mondal, K., Prisciandaro, J., Taliercio, A., Teklishyn, M., Tran, T. T., Vischia, P., Wertz, S., et al. (2023). Search for electroweak production of charginos and neutralinos at <math altimg=“si1.svg”><msqrt><mrow><mi>s</mi></mrow></msqrt><mo linebreak=“goodbreak” linebreakstyle=“after”>=</mo><mn>13</mn><mspace width=“0.25em”/><mtext>TeV</mtext></math> in final states containing hadronic decays of WW, WZ, or WH and missing transverse momentum. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 842. https://doi.org/10.1016/j.physletb.2022.137460 (Original work published 2023)