Home > Research > Publications & Outputs > Search for direct production of electroweakinos...

Links

Text available via DOI:

View graph of relations

Search for direct production of electroweakinos in final states with missing transverse momentum and a Higgs boson decaying into photons in pp collisions at √s = 13 TeV with the ATLAS detector: Journal of High Energy Physics

Research output: Contribution to journalJournal articlepeer-review

Published

Standard

Harvard

APA

Vancouver

Author

Bibtex

@article{73dd1bdb75df4a548ead3fd739949a70,
title = "Search for direct production of electroweakinos in final states with missing transverse momentum and a Higgs boson decaying into photons in pp collisions at √s = 13 TeV with the ATLAS detector: Journal of High Energy Physics",
abstract = "A search for a chargino-neutralino pair decaying via the 125 GeV Higgs boson into photons is presented. The study is based on the data collected between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 139 fb−1 of pp collisions at a centre-of-mass energy of 13 TeV. No significant excess over the expected background is observed. Upper limits at 95% confidence level for a massless χ˜01 are set on several electroweakino production cross-sections and the visible cross-section for beyond the Standard Model processes. In the context of simplified supersymmetric models, 95% confidence-level limits of up to 310 GeV in m(χ˜±1/χ˜02), where m(χ˜01) = 0.5 GeV, are set. Limits at 95% confidence level are also set on the χ˜±1χ˜02 cross-section in the mass plane of m(χ˜±1/χ˜02) and m(χ˜01), and on scenarios with gravitino as the lightest supersymmetric particle. Upper limits at the 95% confidence-level are set on the higgsino production cross-section. Higgsino masses below 380 GeV are excluded for the case of the higgsino fully decaying into a Higgs boson and a gravitino. ",
keywords = "Hadron-Hadron scattering (experiments)",
author = "ATLAS Collaboration and A.E. Barton and I.A. Bertram and G. Borissov and E.V. Bouhova-Thacker and H. Fox and R.C.W. Henderson and R.W.L. Jones and V. Kartvelishvili and R.E. Long and P.A. Love and D. Muenstermann and A.J. Parker and Izaac Sanderswood and M. Smizanska and A.S. Tee and J. Walder and A.M. Wharton and B.W. Whitmore and Melissa Yexley",
year = "2020",
month = oct,
day = "1",
doi = "10.1007/JHEP10(2020)005",
language = "English",
volume = "2020",
journal = "J. High Energy Phys.",
issn = "1126-6708",
publisher = "Springer",
number = "10",

}

RIS

TY - JOUR

T1 - Search for direct production of electroweakinos in final states with missing transverse momentum and a Higgs boson decaying into photons in pp collisions at √s = 13 TeV with the ATLAS detector

T2 - Journal of High Energy Physics

AU - Collaboration, ATLAS

AU - Barton, A.E.

AU - Bertram, I.A.

AU - Borissov, G.

AU - Bouhova-Thacker, E.V.

AU - Fox, H.

AU - Henderson, R.C.W.

AU - Jones, R.W.L.

AU - Kartvelishvili, V.

AU - Long, R.E.

AU - Love, P.A.

AU - Muenstermann, D.

AU - Parker, A.J.

AU - Sanderswood, Izaac

AU - Smizanska, M.

AU - Tee, A.S.

AU - Walder, J.

AU - Wharton, A.M.

AU - Whitmore, B.W.

AU - Yexley, Melissa

PY - 2020/10/1

Y1 - 2020/10/1

N2 - A search for a chargino-neutralino pair decaying via the 125 GeV Higgs boson into photons is presented. The study is based on the data collected between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 139 fb−1 of pp collisions at a centre-of-mass energy of 13 TeV. No significant excess over the expected background is observed. Upper limits at 95% confidence level for a massless χ˜01 are set on several electroweakino production cross-sections and the visible cross-section for beyond the Standard Model processes. In the context of simplified supersymmetric models, 95% confidence-level limits of up to 310 GeV in m(χ˜±1/χ˜02), where m(χ˜01) = 0.5 GeV, are set. Limits at 95% confidence level are also set on the χ˜±1χ˜02 cross-section in the mass plane of m(χ˜±1/χ˜02) and m(χ˜01), and on scenarios with gravitino as the lightest supersymmetric particle. Upper limits at the 95% confidence-level are set on the higgsino production cross-section. Higgsino masses below 380 GeV are excluded for the case of the higgsino fully decaying into a Higgs boson and a gravitino. 

AB - A search for a chargino-neutralino pair decaying via the 125 GeV Higgs boson into photons is presented. The study is based on the data collected between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 139 fb−1 of pp collisions at a centre-of-mass energy of 13 TeV. No significant excess over the expected background is observed. Upper limits at 95% confidence level for a massless χ˜01 are set on several electroweakino production cross-sections and the visible cross-section for beyond the Standard Model processes. In the context of simplified supersymmetric models, 95% confidence-level limits of up to 310 GeV in m(χ˜±1/χ˜02), where m(χ˜01) = 0.5 GeV, are set. Limits at 95% confidence level are also set on the χ˜±1χ˜02 cross-section in the mass plane of m(χ˜±1/χ˜02) and m(χ˜01), and on scenarios with gravitino as the lightest supersymmetric particle. Upper limits at the 95% confidence-level are set on the higgsino production cross-section. Higgsino masses below 380 GeV are excluded for the case of the higgsino fully decaying into a Higgs boson and a gravitino. 

KW - Hadron-Hadron scattering (experiments)

U2 - 10.1007/JHEP10(2020)005

DO - 10.1007/JHEP10(2020)005

M3 - Journal article

VL - 2020

JO - J. High Energy Phys.

JF - J. High Energy Phys.

SN - 1126-6708

IS - 10

M1 - 5

ER -