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 √s = 13 TeV with the ATLAS detector

ATLAS Publications; M. Faucci Giannelli; A. Hasib; M.P. Heath; X. Hoad; A. Søgaard; E.P. Takeva; A.J. Taylor; A. Washbrook

doi:10.1140/epjc/s10052-020-8050-3

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 √s = 13 TeV with the ATLAS detector

ATLAS Publications, M. Faucci Giannelli, A. Hasib, M.P. Heath, X. Hoad, A. Søgaard, E.P. Takeva, A.J. Taylor, A. Washbrook

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

The results of a search for electroweakino pair production pp → ˜χ±1 ˜χ02 in which the chargino ( ˜χ±1 ) decays into a W boson and the lightest neutralino ( ˜χ01 ), while the heavier neutralino ( ˜χ02 ) decays into the Standard Model 125
GeV Higgs boson and a second ˜χ01 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 / ˜χ02 up to 740 GeV are excluded at 95% confidence level for a massless ˜χ01.

Original language	English
Article number	691
Pages (from-to)	1-29
Number of pages	29
Journal	The European Physical Journal C
Volume	80
Issue number	8
DOIs	https://doi.org/10.1140/epjc/s10052-020-8050-3
Publication status	Published - 1 Aug 2020

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10.1140/epjc/s10052-020-8050-3Licence: Creative Commons: Attribution (CC-BY)

http://arxiv.org/abs/1909.09226

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1 Active
5 Finished

Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P. (Principal Investigator)
1/04/23 → 31/03/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/04/23 → 30/09/25
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
1/10/22 → 30/09/25
Project: Research

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ATLAS Publications, Faucci Giannelli, M., Hasib, A., Heath, M. P., Hoad, X., Søgaard, A., Takeva, E. P., Taylor, A. J., & Washbrook, A. (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 √s = 13 TeV with the ATLAS detector. The European Physical Journal C, 80(8), 1-29. Article 691. https://doi.org/10.1140/epjc/s10052-020-8050-3

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title = "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 √s = 13 TeV with the ATLAS detector",

abstract = "The results of a search for electroweakino pair production pp → ˜χ±1 ˜χ02 in which the chargino ( ˜χ±1 ) decays into a W boson and the lightest neutralino ( ˜χ01 ), while the heavier neutralino ( ˜χ02 ) decays into the Standard Model 125 GeV Higgs boson and a second ˜χ01 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 / ˜χ02 up to 740 GeV are excluded at 95\% confidence level for a massless ˜χ01.",

author = "\{ATLAS Publications\} and Clark, \{Philip James\} and Sinead Farrington and Yanyan Gao and Christos Leonidopoulos and Martin, \{Victoria Jane\} and Liza Mijovic and Benjamin Wynne and \{Faucci Giannelli\}, M. and A. Hasib and M.P. Heath and X. Hoad and A. S{\o}gaard and E.P. Takeva and A.J. Taylor and A. Washbrook",

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doi = "10.1140/epjc/s10052-020-8050-3",

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ATLAS Publications, Faucci Giannelli, M, Hasib, A, Heath, MP, Hoad, X, Søgaard, A, Takeva, EP, Taylor, AJ & Washbrook, A 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 √s = 13 TeV with the ATLAS detector', The European Physical Journal C, vol. 80, no. 8, 691, pp. 1-29. https://doi.org/10.1140/epjc/s10052-020-8050-3

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 √s = 13 TeV with the ATLAS detector. / ATLAS Publications; Faucci Giannelli, M.; Hasib, A. et al.
In: The European Physical Journal C, Vol. 80, No. 8, 691, 01.08.2020, p. 1-29.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - 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 √s = 13 TeV with the ATLAS detector

AU - ATLAS Publications

AU - Clark, Philip James

AU - Farrington, Sinead

AU - Gao, Yanyan

AU - Leonidopoulos, Christos

AU - Martin, Victoria Jane

AU - Mijovic, Liza

AU - Wynne, Benjamin

AU - Faucci Giannelli, M.

AU - Hasib, A.

AU - Heath, M.P.

AU - Hoad, X.

AU - Søgaard, A.

AU - Takeva, E.P.

AU - Taylor, A.J.

AU - Washbrook, A.

PY - 2020/8/1

Y1 - 2020/8/1

N2 - The results of a search for electroweakino pair production pp → ˜χ±1 ˜χ02 in which the chargino ( ˜χ±1 ) decays into a W boson and the lightest neutralino ( ˜χ01 ), while the heavier neutralino ( ˜χ02 ) decays into the Standard Model 125 GeV Higgs boson and a second ˜χ01 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 / ˜χ02 up to 740 GeV are excluded at 95% confidence level for a massless ˜χ01.

AB - The results of a search for electroweakino pair production pp → ˜χ±1 ˜χ02 in which the chargino ( ˜χ±1 ) decays into a W boson and the lightest neutralino ( ˜χ01 ), while the heavier neutralino ( ˜χ02 ) decays into the Standard Model 125 GeV Higgs boson and a second ˜χ01 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 / ˜χ02 up to 740 GeV are excluded at 95% confidence level for a massless ˜χ01.

U2 - 10.1140/epjc/s10052-020-8050-3

DO - 10.1140/epjc/s10052-020-8050-3

M3 - Article

SN - 1434-6052

VL - 80

SP - 1

EP - 29

JO - The European Physical Journal C

JF - The European Physical Journal C

IS - 8

M1 - 691

ER -

ATLAS Publications, Faucci Giannelli M, Hasib A, Heath MP, Hoad X, Søgaard A et al. 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 √s = 13 TeV with the ATLAS detector. The European Physical Journal C. 2020 Aug 1;80(8):1-29. 691. doi: 10.1140/epjc/s10052-020-8050-3

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 √s = 13 TeV with the ATLAS detector

Abstract

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Projects

Upgrade of the ATLAS detector at the LHC (2023-26)

Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

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