Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector

G. Aad; Mogens Dam; Nele Maria Philomena Boelaert; Jørgen Beck Hansen; Peter Henrik Hansen; John Renner Hansen; Jørn Dines Hansen; Morten Dam Jørgensen; Simon Johann Franz Heisterkamp; Esben Bryndt Klinkby; Sascha Mehlhase; Björn Stefan Nilsson; Troels Christian Petersen; Stefania Xella; Ask Emil Løvschall-Jensen

doi:10.1140/epjc/s10052-012-1965-6

Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector

G. Aad, Mogens Dam, Nele Maria Philomena Boelaert, Jørgen Beck Hansen, Peter Henrik Hansen, John Renner Hansen, Jørn Dines Hansen, Morten Dam Jørgensen, Simon Johann Franz Heisterkamp, Esben Bryndt Klinkby, Sascha Mehlhase, Björn Stefan Nilsson, Troels Christian Petersen, Stefania Xella, Ask Emil Løvschall-Jensen

19 Citations (Scopus)

Abstract

New metastable massive particles with electric and colour charge are features of many theories beyond the Standard Model. A search is performed for long-lived gluino-based R-hadrons with the ATLAS detector at the LHC using a data sample corresponding to an integrated luminosity of 31 pb⁻¹. We search for evidence of particles that have come to rest in the ATLAS detector and decay at some later time during the periods in the LHC bunch structure without proton–proton collisions. No significant deviations from the expected backgrounds are observed, and a cross-section limit is set. It can be interpreted as excluding gluino-based R-hadrons with masses less than 341 GeV at the 95 % C.L., for lifetimes from 10⁻⁵to 10³seconds and a neutralino mass of 100 GeV.

Original language	English
Journal	European Physical Journal C
Volume	72
Issue number	4
Pages (from-to)	1965
ISSN	1434-6044
DOIs	https://doi.org/10.1140/epjc/s10052-012-1965-6
Publication status	Published - 7 May 2012

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Aad, G., Dam, M., Boelaert, N. M. P., Hansen, J. B., Hansen, P. H., Hansen, J. R., Hansen, J. D., Jørgensen, M. D., Heisterkamp, S. J. F., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, T. C., Xella, S., & Løvschall-Jensen, A. E. (2012). Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector. European Physical Journal C, 72(4), 1965. https://doi.org/10.1140/epjc/s10052-012-1965-6

Aad, G, Dam, M, Boelaert, NMP, Hansen, JB , Hansen, PH , Hansen, JR , Hansen, JD, Jørgensen, MD, Heisterkamp, SJF, Klinkby, EB, Mehlhase, S, Nilsson, BS, Petersen, TC , Xella, S & Løvschall-Jensen, AE 2012, 'Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector', European Physical Journal C, vol. 72, no. 4, pp. 1965. https://doi.org/10.1140/epjc/s10052-012-1965-6

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title = "Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector",

abstract = "New metastable massive particles with electric and colour charge are features of many theories beyond the Standard Model. A search is performed for long-lived gluino-based R-hadrons with the ATLAS detector at the LHC using a data sample corresponding to an integrated luminosity of 31 pb−1. We search for evidence of particles that have come to rest in the ATLAS detector and decay at some later time during the periods in the LHC bunch structure without proton–proton collisions. No significant deviations from the expected backgrounds are observed, and a cross-section limit is set. It can be interpreted as excluding gluino-based R-hadrons with masses less than 341 GeV at the 95 % C.L., for lifetimes from 10−5to 103seconds and a neutralino mass of 100 GeV.",

author = "G. Aad and Mogens Dam and Boelaert, {Nele Maria Philomena} and Hansen, {J{\o}rgen Beck} and Hansen, {Peter Henrik} and Hansen, {John Renner} and Hansen, {J{\o}rn Dines} and J{\o}rgensen, {Morten Dam} and Heisterkamp, {Simon Johann Franz} and Klinkby, {Esben Bryndt} and Sascha Mehlhase and Nilsson, {Bj{\"o}rn Stefan} and Petersen, {Troels Christian} and Stefania Xella and L{\o}vschall-Jensen, {Ask Emil}",

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AU - Aad, G.

AU - Dam, Mogens

AU - Boelaert, Nele Maria Philomena

AU - Hansen, Jørgen Beck

AU - Hansen, Peter Henrik

AU - Hansen, John Renner

AU - Hansen, Jørn Dines

AU - Jørgensen, Morten Dam

AU - Heisterkamp, Simon Johann Franz

AU - Klinkby, Esben Bryndt

AU - Mehlhase, Sascha

AU - Nilsson, Björn Stefan

AU - Petersen, Troels Christian

AU - Xella, Stefania

AU - Løvschall-Jensen, Ask Emil

PY - 2012/5/7

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N2 - New metastable massive particles with electric and colour charge are features of many theories beyond the Standard Model. A search is performed for long-lived gluino-based R-hadrons with the ATLAS detector at the LHC using a data sample corresponding to an integrated luminosity of 31 pb−1. We search for evidence of particles that have come to rest in the ATLAS detector and decay at some later time during the periods in the LHC bunch structure without proton–proton collisions. No significant deviations from the expected backgrounds are observed, and a cross-section limit is set. It can be interpreted as excluding gluino-based R-hadrons with masses less than 341 GeV at the 95 % C.L., for lifetimes from 10−5to 103seconds and a neutralino mass of 100 GeV.

AB - New metastable massive particles with electric and colour charge are features of many theories beyond the Standard Model. A search is performed for long-lived gluino-based R-hadrons with the ATLAS detector at the LHC using a data sample corresponding to an integrated luminosity of 31 pb−1. We search for evidence of particles that have come to rest in the ATLAS detector and decay at some later time during the periods in the LHC bunch structure without proton–proton collisions. No significant deviations from the expected backgrounds are observed, and a cross-section limit is set. It can be interpreted as excluding gluino-based R-hadrons with masses less than 341 GeV at the 95 % C.L., for lifetimes from 10−5to 103seconds and a neutralino mass of 100 GeV.

U2 - 10.1140/epjc/s10052-012-1965-6

DO - 10.1140/epjc/s10052-012-1965-6

M3 - Journal article

SN - 1434-6044

VL - 72

SP - 1965

JO - European Physical Journal C

JF - European Physical Journal C

IS - 4

ER -

Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector

Abstract

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