Search for top squarks in events with a Higgs or Z boson using 139 fb−1 of pp collision data at √s = 13 TeV with the ATLAS detector

ATLAS Publications; T.M. Carter; M. Faucci Giannelli; A. Hasib; M.P. Heath; S. Palazzo; A. Søgaard; A. Strubig; E.P. Takeva; A.J. Taylor; N. Themistokleous; E.M. Villhauer

doi:10.1140/epjc/s10052-020-08469-8

Search for top squarks in events with a Higgs or Z boson using 139 fb−1 of pp collision data at √s = 13 TeV with the ATLAS detector

ATLAS Publications, T.M. Carter, M. Faucci Giannelli, A. Hasib, M.P. Heath, S. Palazzo, A. Søgaard, A. Strubig, E.P. Takeva, A.J. Taylor, N. Themistokleous, E.M. Villhauer

School of Physics and Astronomy

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

Abstract

This paper presents a search for direct top squark pair production in events with missing transverse momentum plus either a pair of jets consistent with Standard Model Higgs boson decay into b-quarks or a same-flavour opposite-sign dilepton pair with an invariant mass consistent with a Z boson. The analysis is performed using the proton–proton collision data at √s = 13 TeV collected with the ATLAS detector during the LHC Run-2, corresponding to an integrated luminosity of 139 fb−1 . No excess is observed in the data above the Standard Model predictions. The results are interpreted in simplified models featuring direct production of pairs of either the lighter top squark (˜t1 ) or the heavier
top squark (˜t2 ), excluding at 95% confidence level ˜t1 and ˜t2 masses up to about 1220 and 875 GeV, respectively.

Original language	English
Article number	1080
Pages (from-to)	1-33
Number of pages	33
Journal	The European Physical Journal C
Volume	80
Issue number	11
DOIs	https://doi.org/10.1140/epjc/s10052-020-08469-8
Publication status	Published - 23 Nov 2020

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10.1140/epjc/s10052-020-08469-8Licence: Creative Commons: Attribution (CC-BY)

http://arxiv.org/abs/2006.05880

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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

Cite this

ATLAS Publications, Carter, T. M., Faucci Giannelli, M., Hasib, A., Heath, M. P., Palazzo, S., Søgaard, A., Strubig, A., Takeva, E. P., Taylor, A. J., Themistokleous, N., & Villhauer, E. M. (2020). Search for top squarks in events with a Higgs or Z boson using 139 fb−1 of pp collision data at √s = 13 TeV with the ATLAS detector. The European Physical Journal C, 80(11), 1-33. Article 1080. https://doi.org/10.1140/epjc/s10052-020-08469-8

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title = "Search for top squarks in events with a Higgs or Z boson using 139 fb−1 of pp collision data at √s = 13 TeV with the ATLAS detector",

abstract = "This paper presents a search for direct top squark pair production in events with missing transverse momentum plus either a pair of jets consistent with Standard Model Higgs boson decay into b-quarks or a same-flavour opposite-sign dilepton pair with an invariant mass consistent with a Z boson. The analysis is performed using the proton–proton collision data at √s = 13 TeV collected with the ATLAS detector during the LHC Run-2, corresponding to an integrated luminosity of 139 fb−1 . No excess is observed in the data above the Standard Model predictions. The results are interpreted in simplified models featuring direct production of pairs of either the lighter top squark (˜t1 ) or the heavier top squark (˜t2 ), excluding at 95\% confidence level ˜t1 and ˜t2 masses up to about 1220 and 875 GeV, respectively.",

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 T.M. Carter and \{Faucci Giannelli\}, M. and A. Hasib and M.P. Heath and S. Palazzo and A. S{\o}gaard and A. Strubig and E.P. Takeva and A.J. Taylor and N. Themistokleous and E.M. Villhauer",

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doi = "10.1140/epjc/s10052-020-08469-8",

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ATLAS Publications, Carter, TM, Faucci Giannelli, M, Hasib, A, Heath, MP, Palazzo, S, Søgaard, A, Strubig, A, Takeva, EP, Taylor, AJ, Themistokleous, N & Villhauer, EM 2020, 'Search for top squarks in events with a Higgs or Z boson using 139 fb−1 of pp collision data at √s = 13 TeV with the ATLAS detector', The European Physical Journal C, vol. 80, no. 11, 1080, pp. 1-33. https://doi.org/10.1140/epjc/s10052-020-08469-8

TY - JOUR

T1 - Search for top squarks in events with a Higgs or Z boson using 139 fb−1 of pp collision data 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 - Carter, T.M.

AU - Faucci Giannelli, M.

AU - Hasib, A.

AU - Heath, M.P.

AU - Palazzo, S.

AU - Søgaard, A.

AU - Strubig, A.

AU - Takeva, E.P.

AU - Taylor, A.J.

AU - Themistokleous, N.

AU - Villhauer, E.M.

PY - 2020/11/23

Y1 - 2020/11/23

N2 - This paper presents a search for direct top squark pair production in events with missing transverse momentum plus either a pair of jets consistent with Standard Model Higgs boson decay into b-quarks or a same-flavour opposite-sign dilepton pair with an invariant mass consistent with a Z boson. The analysis is performed using the proton–proton collision data at √s = 13 TeV collected with the ATLAS detector during the LHC Run-2, corresponding to an integrated luminosity of 139 fb−1 . No excess is observed in the data above the Standard Model predictions. The results are interpreted in simplified models featuring direct production of pairs of either the lighter top squark (˜t1 ) or the heavier top squark (˜t2 ), excluding at 95% confidence level ˜t1 and ˜t2 masses up to about 1220 and 875 GeV, respectively.

AB - This paper presents a search for direct top squark pair production in events with missing transverse momentum plus either a pair of jets consistent with Standard Model Higgs boson decay into b-quarks or a same-flavour opposite-sign dilepton pair with an invariant mass consistent with a Z boson. The analysis is performed using the proton–proton collision data at √s = 13 TeV collected with the ATLAS detector during the LHC Run-2, corresponding to an integrated luminosity of 139 fb−1 . No excess is observed in the data above the Standard Model predictions. The results are interpreted in simplified models featuring direct production of pairs of either the lighter top squark (˜t1 ) or the heavier top squark (˜t2 ), excluding at 95% confidence level ˜t1 and ˜t2 masses up to about 1220 and 875 GeV, respectively.

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DO - 10.1140/epjc/s10052-020-08469-8

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EP - 33

JO - The European Physical Journal C

JF - The European Physical Journal C

IS - 11

M1 - 1080

ER -

Search for top squarks in events with a Higgs or Z boson using 139 fb−1 of pp collision data 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

Cite this