Search for direct production of electroweakinos in final states with one lepton, missing transverse momentum and a Higgs boson decaying into two b-jets in pp collisions at \sqrts=13 TeV with the ATLAS detector

Franconi, Laura; Haug, Sigve; Weber, Michele; Anders, John Kenneth; Fehr, Armin; Beck, Hans Peter; Ereditato, Antonio; Merlassino, Claudia; Miucci, Antonio; Weston, Thomas Daniel (2020). Search for direct production of electroweakinos in final states with one lepton, missing transverse momentum and a Higgs boson decaying into two b-jets in pp collisions at \sqrts=13 TeV with the ATLAS detector. The European physical journal. C, Particles and fields, 80(8) Springer 10.1140/epjc/s10052-020-8050-3

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The results of a search for electroweakino pair production pp→χ~±1χ~02 in which the chargino (χ~±1) decays into a W boson and the lightest neutralino (χ~01), while the heavier neutralino (χ~02) decays into the Standard Model 125 GeV Higgs boson and a second χ~01 are presented. The signal selection requires a pair of b-tagged jets consistent with those from a Higgs boson decay, and either an electron or a muon from the W boson decay, together with missing transverse momentum from the corresponding neutrino and the stable neutralinos. The analysis is based on data corresponding to 139 fb−1 of s√=13 TeV pp collisions provided by the Large Hadron Collider and recorded by the ATLAS detector. No statistically significant evidence of an excess of events above the Standard Model expectation is found. Limits are set on the direct production of the electroweakinos in simplified models, assuming pure wino cross-sections. Masses of χ~±1/χ~02 up to 740 GeV are excluded at 95% confidence level for a massless χ~01.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)
08 Faculty of Science > Physics Institute

UniBE Contributor:

Franconi, Laura; Haug, Sigve; Weber, Michele; Anders, John Kenneth; Fehr, Armin; Beck, Hans Peter; Ereditato, Antonio; Merlassino, Claudia; Miucci, Antonio and Weston, Thomas Daniel

Subjects:

500 Science > 530 Physics

ISSN:

1434-6044

Publisher:

Springer

Language:

English

Submitter:

BORIS Import LHEP

Date Deposited:

19 Apr 2021 16:18

Last Modified:

25 Apr 2021 03:07

Publisher DOI:

10.1140/epjc/s10052-020-8050-3

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwaehnt

BORIS DOI:

10.48350/155544

URI:

https://boris.unibe.ch/id/eprint/155544

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