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Search for long-lived neutral particles produced in pp collisions at s =13 TeV decaying into displaced hadronic jets in the ATLAS inner detector and muon spectrometer

G., Aad ; Åkesson, T. LU orcid ; Bocchetta, S. LU ; Bryngemark, L. LU ; Corrigan, E. LU ; Doglioni, C. LU ; Gregersen, K. LU ; Hansen, E. LU ; Hedberg, V. LU and Jarlskog, G. LU , et al. (2020) In Physical Review D 101(5).
Abstract
A search is presented for pair production of long-lived neutral particles using 33 fb-1 of s=13 TeV proton-proton collision data, collected during 2016 by the ATLAS detector at the LHC. This search focuses on a topology in which one long-lived particle decays in the ATLAS inner detector and the other decays in the muon spectrometer. Special techniques are employed to reconstruct the displaced tracks and vertices in the inner detector and in the muon spectrometer. One event is observed that passes the full event selection, which is consistent with the estimated background. Limits are placed on scalar boson propagators with masses from 125 GeV to 1000 GeV decaying into pairs of long-lived hidden-sector scalars with masses from 8 GeV to 400... (More)
A search is presented for pair production of long-lived neutral particles using 33 fb-1 of s=13 TeV proton-proton collision data, collected during 2016 by the ATLAS detector at the LHC. This search focuses on a topology in which one long-lived particle decays in the ATLAS inner detector and the other decays in the muon spectrometer. Special techniques are employed to reconstruct the displaced tracks and vertices in the inner detector and in the muon spectrometer. One event is observed that passes the full event selection, which is consistent with the estimated background. Limits are placed on scalar boson propagators with masses from 125 GeV to 1000 GeV decaying into pairs of long-lived hidden-sector scalars with masses from 8 GeV to 400 GeV. The limits placed on several low-mass scalars extend previous exclusion limits in the range of proper lifetimes cτ from 5 cm to 1 m. © 2020 CERN. (Less)
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author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
101
issue
5
article number
052013
publisher
American Physical Society
external identifiers
  • scopus:85083581544
ISSN
2470-0010
DOI
10.1103/PhysRevD.101.052013
language
English
LU publication?
yes
id
1d350d57-081d-4b25-b5d8-99536cf38ddd
date added to LUP
2022-04-05 14:43:25
date last changed
2023-04-02 22:38:51
@article{1d350d57-081d-4b25-b5d8-99536cf38ddd,
  abstract     = {{A search is presented for pair production of long-lived neutral particles using 33 fb-1 of s=13 TeV proton-proton collision data, collected during 2016 by the ATLAS detector at the LHC. This search focuses on a topology in which one long-lived particle decays in the ATLAS inner detector and the other decays in the muon spectrometer. Special techniques are employed to reconstruct the displaced tracks and vertices in the inner detector and in the muon spectrometer. One event is observed that passes the full event selection, which is consistent with the estimated background. Limits are placed on scalar boson propagators with masses from 125 GeV to 1000 GeV decaying into pairs of long-lived hidden-sector scalars with masses from 8 GeV to 400 GeV. The limits placed on several low-mass scalars extend previous exclusion limits in the range of proper lifetimes cτ from 5 cm to 1 m. © 2020 CERN.}},
  author       = {{G., Aad and Åkesson, T. and Bocchetta, S. and Bryngemark, L. and Corrigan, E. and Doglioni, C. and Gregersen, K. and Hansen, E. and Hedberg, V. and Jarlskog, G. and Kalderon, C. and Kellermann, E. and Konya, B. and Lytken, E. and Mankinen, K. and Marcon, C. and Mjörnmark, J. and Mullier, G. and Poettgen, R. and Poulsen, T. and Skorda, E. and Smirnova, O. and L., Zwalinski}},
  issn         = {{2470-0010}},
  language     = {{eng}},
  number       = {{5}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review D}},
  title        = {{Search for long-lived neutral particles produced in pp collisions at s =13 TeV decaying into displaced hadronic jets in the ATLAS inner detector and muon spectrometer}},
  url          = {{http://dx.doi.org/10.1103/PhysRevD.101.052013}},
  doi          = {{10.1103/PhysRevD.101.052013}},
  volume       = {{101}},
  year         = {{2020}},
}