Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at s =13 TeV with the ATLAS detector

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Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at s =13 TeV with the ATLAS detector. / Aaboud, M; Aad, G; Abbott, B.; Abdinov, O; Abeloos, B; Abidi, S. H.; Åkesson, Torsten; Bocchetta, Simona; Corrigan, Eric; Doglioni, Caterina; Brottmann Hansen, Eva; Hedberg, Vincent; Jarlskog, Göran; Kalderon, Charles; Kellermann, Edgar; Konya, Balazs; Lytken, Else; Mankinen, Katja; Mjörnmark, Ulf; Pöttgen, Ruth; Poulsen, Trine; Smirnova, Oxana; Viazlo, Oleksandr; ATLAS Collaboration.

In: Physical Review D, Vol. 97, No. 5, 2018:052010, 27.03.2018.

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Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., ... ATLAS Collaboration (2018). Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at s =13 TeV with the ATLAS detector. Physical Review D, 97(5), [2018:052010]. https://doi.org/10.1103/PhysRevD.97.052010

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TY - JOUR

T1 - Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra at s =13 TeV with the ATLAS detector

AU - Aaboud, M

AU - Aad, G

AU - Abbott, B.

AU - Abdinov, O

AU - Abeloos, B

AU - Abidi, S. H.

AU - Åkesson, Torsten

AU - Bocchetta, Simona

AU - Corrigan, Eric

AU - Doglioni, Caterina

AU - Brottmann Hansen, Eva

AU - Hedberg, Vincent

AU - Jarlskog, Göran

AU - Kalderon, Charles

AU - Kellermann, Edgar

AU - Konya, Balazs

AU - Lytken, Else

AU - Mankinen, Katja

AU - Mjörnmark, Ulf

AU - Pöttgen, Ruth

AU - Poulsen, Trine

AU - Smirnova, Oxana

AU - Viazlo, Oleksandr

AU - ATLAS Collaboration

N1 - Export Date: 16 April 2018

PY - 2018/3/27

Y1 - 2018/3/27

N2 - A search for electroweak production of supersymmetric particles in scenarios with compressed mass spectra in final states with two low-momentum leptons and missing transverse momentum is presented. This search uses proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2015-2016, corresponding to 36.1 fb-1 of integrated luminosity at s=13 TeV. Events with same-flavor pairs of electrons or muons with opposite electric charge are selected. The data are found to be consistent with the Standard Model prediction. Results are interpreted using simplified models of R-parity-conserving supersymmetry in which there is a small mass difference between the masses of the produced supersymmetric particles and the lightest neutralino. Exclusion limits at 95% confidence level are set on next-to-lightest neutralino masses of up to 145 GeV for Higgsino production and 175 GeV for wino production, and slepton masses of up to 190 GeV for pair production of sleptons. In the compressed mass regime, the exclusion limits extend down to mass splittings of 2.5 GeV for Higgsino production, 2 GeV for wino production, and 1 GeV for slepton production. The results are also interpreted in the context of a radiatively-driven natural supersymmetry model with nonuniversal Higgs boson masses. © 2018 CERN. © 2018 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

AB - A search for electroweak production of supersymmetric particles in scenarios with compressed mass spectra in final states with two low-momentum leptons and missing transverse momentum is presented. This search uses proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2015-2016, corresponding to 36.1 fb-1 of integrated luminosity at s=13 TeV. Events with same-flavor pairs of electrons or muons with opposite electric charge are selected. The data are found to be consistent with the Standard Model prediction. Results are interpreted using simplified models of R-parity-conserving supersymmetry in which there is a small mass difference between the masses of the produced supersymmetric particles and the lightest neutralino. Exclusion limits at 95% confidence level are set on next-to-lightest neutralino masses of up to 145 GeV for Higgsino production and 175 GeV for wino production, and slepton masses of up to 190 GeV for pair production of sleptons. In the compressed mass regime, the exclusion limits extend down to mass splittings of 2.5 GeV for Higgsino production, 2 GeV for wino production, and 1 GeV for slepton production. The results are also interpreted in the context of a radiatively-driven natural supersymmetry model with nonuniversal Higgs boson masses. © 2018 CERN. © 2018 CERN, for the ATLAS Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

U2 - 10.1103/PhysRevD.97.052010

DO - 10.1103/PhysRevD.97.052010

M3 - Article

VL - 97

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

T2 - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

SN - 1550-2368

IS - 5

M1 - 2018:052010

ER -