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Search for neutral long-lived particles in pp collisions at s = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter

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Search for neutral long-lived particles in pp collisions at s = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter. / ATLAS Collaboration.
In: Journal of High Energy Physics, Vol. 2022, No. 6, 5, 01.06.2022.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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ATLAS Collaboration. Search for neutral long-lived particles in pp collisions at s = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter. Journal of High Energy Physics. 2022 Jun 1;2022(6):5. doi: 10.1007/jhep06(2022)005

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Bibtex

@article{9d467bd46eb946dabadf41f8043304c0,
title = "Search for neutral long-lived particles in pp collisions at s = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter",
abstract = "A search for decays of pair-produced neutral long-lived particles (LLPs) is presented using 139 fb−1 of proton-proton collision data collected by the ATLAS detector at the LHC in 2015–2018 at a centre-of-mass energy of 13 TeV. Dedicated techniques were developed for the reconstruction of displaced jets produced by LLPs decaying hadronically in the ATLAS hadronic calorimeter. Two search regions are defined for different LLP kinematic regimes. The observed numbers of events are consistent with the expected background, and limits for several benchmark signals are determined. For a SM Higgs boson with a mass of 125 GeV, branching ratios above 10% are excluded at 95% confidence level for values of c times LLP mean proper lifetime in the range between 20 mm and 10 m depending on the model. Upper limits are also set on the cross-section times branching ratio for scalars with a mass of 60 GeV and for masses between 200 GeV and 1 TeV.",
keywords = "Regular Article - Experimental Physics, Hadron-Hadron Scattering",
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 P.A. Love and Lingxin Meng and D. Muenstermann and Katherine Rybacki and Izaac Sanderswood and M. Smizanska and Sebastiano Spinali and A.M. Wharton and Melissa Yexley",
year = "2022",
month = jun,
day = "1",
doi = "10.1007/jhep06(2022)005",
language = "English",
volume = "2022",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer-Verlag",
number = "6",

}

RIS

TY - JOUR

T1 - Search for neutral long-lived particles in pp collisions at s = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter

AU - ATLAS Collaboration

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 - Love, P.A.

AU - Meng, Lingxin

AU - Muenstermann, D.

AU - Rybacki, Katherine

AU - Sanderswood, Izaac

AU - Smizanska, M.

AU - Spinali, Sebastiano

AU - Wharton, A.M.

AU - Yexley, Melissa

PY - 2022/6/1

Y1 - 2022/6/1

N2 - A search for decays of pair-produced neutral long-lived particles (LLPs) is presented using 139 fb−1 of proton-proton collision data collected by the ATLAS detector at the LHC in 2015–2018 at a centre-of-mass energy of 13 TeV. Dedicated techniques were developed for the reconstruction of displaced jets produced by LLPs decaying hadronically in the ATLAS hadronic calorimeter. Two search regions are defined for different LLP kinematic regimes. The observed numbers of events are consistent with the expected background, and limits for several benchmark signals are determined. For a SM Higgs boson with a mass of 125 GeV, branching ratios above 10% are excluded at 95% confidence level for values of c times LLP mean proper lifetime in the range between 20 mm and 10 m depending on the model. Upper limits are also set on the cross-section times branching ratio for scalars with a mass of 60 GeV and for masses between 200 GeV and 1 TeV.

AB - A search for decays of pair-produced neutral long-lived particles (LLPs) is presented using 139 fb−1 of proton-proton collision data collected by the ATLAS detector at the LHC in 2015–2018 at a centre-of-mass energy of 13 TeV. Dedicated techniques were developed for the reconstruction of displaced jets produced by LLPs decaying hadronically in the ATLAS hadronic calorimeter. Two search regions are defined for different LLP kinematic regimes. The observed numbers of events are consistent with the expected background, and limits for several benchmark signals are determined. For a SM Higgs boson with a mass of 125 GeV, branching ratios above 10% are excluded at 95% confidence level for values of c times LLP mean proper lifetime in the range between 20 mm and 10 m depending on the model. Upper limits are also set on the cross-section times branching ratio for scalars with a mass of 60 GeV and for masses between 200 GeV and 1 TeV.

KW - Regular Article - Experimental Physics

KW - Hadron-Hadron Scattering

U2 - 10.1007/jhep06(2022)005

DO - 10.1007/jhep06(2022)005

M3 - Journal article

VL - 2022

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 6

M1 - 5

ER -