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- Publisher Website: 10.1140/epjc/s10052-020-7997-4
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Article: Search for light long-lived neutral particles produced in pp collisions at √s=13 TeV and decaying into collimated leptons or light hadrons with the ATLAS detector
Title | Search for light long-lived neutral particles produced in pp collisions at √s=13 TeV and decaying into collimated leptons or light hadrons with the ATLAS detector |
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Authors | |
Issue Date | 2020 |
Publisher | Springer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org |
Citation | The European Physical Journal C: Particles and Fields, 2020, v. 80 n. 5, article no. 450 How to Cite? |
Abstract | Several models of physics beyond the Standard Model predict the existence of dark photons, light neutral particles decaying into collimated leptons or light hadrons. This paper presents a search for long-lived dark photons produced from the decay of a Higgs boson or a heavy scalar boson and decaying into displaced collimated Standard Model fermions. The search uses data corresponding to an integrated luminosity of 36.1 fb−1 collected in proton–proton collisions at √s=13 TeV recorded in 2015–2016 with the ATLAS detector at the Large Hadron Collider. The observed number of events is consistent with the expected background, and limits on the production cross section times branching fraction as a function of the proper decay length of the dark photon are reported. A cross section times branching fraction above 4 pb is excluded for a Higgs boson decaying into two dark photons for dark-photon decay lengths between 1.5 mm and 307 mm. |
Persistent Identifier | http://hdl.handle.net/10722/286258 |
ISSN | 2023 Impact Factor: 4.2 2023 SCImago Journal Rankings: 1.451 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | ATLAS Collaboration | - |
dc.contributor.author | Lo, CY | - |
dc.contributor.author | Paredes Hernandez, D | - |
dc.contributor.author | Tu, Y | - |
dc.date.accessioned | 2020-08-31T07:01:24Z | - |
dc.date.available | 2020-08-31T07:01:24Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | The European Physical Journal C: Particles and Fields, 2020, v. 80 n. 5, article no. 450 | - |
dc.identifier.issn | 1434-6044 | - |
dc.identifier.uri | http://hdl.handle.net/10722/286258 | - |
dc.description.abstract | Several models of physics beyond the Standard Model predict the existence of dark photons, light neutral particles decaying into collimated leptons or light hadrons. This paper presents a search for long-lived dark photons produced from the decay of a Higgs boson or a heavy scalar boson and decaying into displaced collimated Standard Model fermions. The search uses data corresponding to an integrated luminosity of 36.1 fb−1 collected in proton–proton collisions at √s=13 TeV recorded in 2015–2016 with the ATLAS detector at the Large Hadron Collider. The observed number of events is consistent with the expected background, and limits on the production cross section times branching fraction as a function of the proper decay length of the dark photon are reported. A cross section times branching fraction above 4 pb is excluded for a Higgs boson decaying into two dark photons for dark-photon decay lengths between 1.5 mm and 307 mm. | - |
dc.language | eng | - |
dc.publisher | Springer Verlag (Germany): SCOAP3. The Journal's web site is located at http://epjc.edpsciences.org | - |
dc.relation.ispartof | The European Physical Journal C: Particles and Fields | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.title | Search for light long-lived neutral particles produced in pp collisions at √s=13 TeV and decaying into collimated leptons or light hadrons with the ATLAS detector | - |
dc.type | Article | - |
dc.identifier.email | Lo, CY: samuel3@hku.hk | - |
dc.identifier.email | Paredes Hernandez, D: dparedes@hku.hk | - |
dc.identifier.email | Tu, Y: yanjuntu@hku.hk | - |
dc.identifier.authority | Tu, Y=rp01971 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1140/epjc/s10052-020-7997-4 | - |
dc.identifier.scopus | eid_2-s2.0-85085041736 | - |
dc.identifier.hkuros | 313082 | - |
dc.identifier.volume | 80 | - |
dc.identifier.issue | 5 | - |
dc.identifier.spage | article no. 450 | - |
dc.identifier.epage | article no. 450 | - |
dc.identifier.isi | WOS:000546996400002 | - |
dc.publisher.place | Germany | - |
dc.identifier.issnl | 1434-6044 | - |