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Search for the Production of a Long-Lived Neutral Particle Decaying within the ATLAS Hadronic Calorimeter in Association with a Z Boson from pp Collisions at √s = 13 TeV
dc.contributor.author | Aaboud, M. | |
dc.contributor.author | Rogan, Christopher | |
dc.contributor.author | ATLAS Collaboration | |
dc.date.accessioned | 2021-01-28T21:54:34Z | |
dc.date.available | 2021-01-28T21:54:34Z | |
dc.date.issued | 2019-04-15 | |
dc.identifier.citation | M. Aaboud et al., "Search for the Production of a Long-Lived Neutral Particle Decaying within the ATLAS Hadronic Calorimeter in Association with a Z Boson from pp Collisions at √s = 13 TeV", Phys. Rev. Lett. 122, 151801, 15 April 2019, American Physical Society, https://doi.org/10.1103/PhysRevLett.122.151801 | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/31295 | |
dc.description | This work is licensed under a Creative Commons Attribution 4.0 International License. | en_US |
dc.description.abstract | This Letter presents a search for the production of a long-lived neutral particle (Zd) decaying within the ATLAS hadronic calorimeter, in association with a standard model (SM) Z boson produced via an intermediate scalar boson, where Z→ℓ+ℓ− (ℓ=e, μ). The data used were collected by the ATLAS detector during 2015 and 2016 pp collisions with a center-of-mass energy of √s=13 TeV at the Large Hadron Collider and correspond to an integrated luminosity of 36.1 ± 0.8 fb−1. No significant excess of events is observed above the expected background. Limits on the production cross section of the scalar boson times its decay branching fraction into the long-lived neutral particle are derived as a function of the mass of the intermediate scalar boson, the mass of the long-lived neutral particle, and its cτ from a few centimeters to one hundred meters. In the case that the intermediate scalar boson is the SM Higgs boson, its decay branching fraction to a long-lived neutral particle with a cτ approximately between 0.1 and 7 m is excluded with a 95% confidence level up to 10% for mZd between 5 and 15 GeV. | en_US |
dc.publisher | American Physical Society | en_US |
dc.rights | © 2019 CERN, for the ATLAS Collaboration. | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
dc.title | Search for the Production of a Long-Lived Neutral Particle Decaying within the ATLAS Hadronic Calorimeter in Association with a Z Boson from pp Collisions at √s = 13 TeV | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Rogan, Christopher | |
kusw.kudepartment | Physics and Astronomy | en_US |
dc.identifier.doi | 10.1103/PhysRevLett.122.151801 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.rights.accessrights | openAccess | en_US |