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| 001 | 599325 | ||
| 005 | 20231204212022.0 | ||
| 024 | 7 | _ | |a ATLAS:2023scm |2 INSPIRETeX |
| 024 | 7 | _ | |a inspire:2696558 |2 inspire |
| 024 | 7 | _ | |a 10.3204/PUBDB-2023-07321 |2 datacite_doi |
| 037 | _ | _ | |a PUBDB-2023-07321 |
| 041 | _ | _ | |a English |
| 088 | _ | _ | |a ATLAS-CONF-2023-041 |2 Atlas |
| 100 | 1 | _ | |a ATLAS Collaboration |0 P:(DE-HGF)0 |b 0 |e Collaboration author |
| 245 | _ | _ | |a Search for narrow low-mass resonances in the four-muon final state with the ATLAS detector at the LHC |
| 260 | _ | _ | |c 2023 |
| 300 | _ | _ | |a 21 |
| 336 | 7 | _ | |a report |2 DRIVER |
| 336 | 7 | _ | |a REPORT |2 ORCID |
| 336 | 7 | _ | |a Report |0 10 |2 EndNote |
| 336 | 7 | _ | |a Output Types/Report |2 DataCite |
| 336 | 7 | _ | |a Report |b report |m report |0 PUB:(DE-HGF)29 |s 1701693692_2870865 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a TECHREPORT |2 BibTeX |
| 500 | _ | _ | |a Preliminary results. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/CONFNOTES/ATLAS-CONF-2023-041. The authors list may be incomplete! |
| 520 | _ | _ | |a A search for new low-mass resonances in the four-muon final state in the four-muon invariant mass range from $10-50$~GeV is performed using $pp$ collision data recorded with the ATLAS detector at the Large Hadron Collider. The data correspond to an integrated luminosity of 20.3 fb$^{-1}$ at a centre-of-mass energy ($\sqrt{s}$) of 8T eV collected in 2012, and 51.5 fb$^{-1}$ and 58.5 fb$^{-1}$ collected at $\sqrt{s}=13$ TeV in 2015--2017 and 2018, respectively. An excess at 18 GeV in the invariant mass spectrum of the four-muon system of the selected $\Upsilon(1\mathrm{S})+\mu^+\mu^-\to\mu^+\mu^-\,\mu^+\mu^-$ final state is observed in the 8 TeV data. Although not blinded, typical selection criteria are used and variations studied to explore the stability of the excess, resulting in local significances of the excess of between be $3.6\,\sigma$ and $6.3\,\sigma$ corresponding to global significances of $1.9\,\sigma$ to $5.4\,\sigma$. A baseline choice of selection cuts defined for the analysis at 8~TeV was defined in the 8~TeV data to be further probed at Run 2. Subsequent analysis of 13 TeV data finds a smaller excess at the same four-muon invariant mass with a significance of $1.9\,\sigma$ in early 13~TeV data runs, while data collected with more restrictive trigger selections in the 2018 dataset finds no evidence of a signal. LHCb and CMS have observed no excess at this mass. Signal MC and di-$\Upsilon(1\mathrm{S})$ production studies in data are used to quantify performance across the three data-taking periods, finding reductions in expected sensitivity in the 13 TeV dataset compared to that at 8 TeV. The lack of observation of a signal in the 13 TeV is assessed to be in tension with the structure observed at an invariant mass of 18 GeV in the 8 TeV dataset, up to a maximum of $2.7\sigma$. We subsequently set and report limits on the total production cross section times branching fraction to a four-muon final state for a new state at a mass of 18 GeV for a variety of models. |
| 536 | _ | _ | |a 611 - Fundamental Particles and Forces (POF4-611) |0 G:(DE-HGF)POF4-611 |c POF4-611 |f POF IV |x 0 |
| 588 | _ | _ | |a Dataset connected to INSPIRE |
| 650 | _ | 7 | |a four-muon |2 autogen |
| 650 | _ | 7 | |a resonance |2 autogen |
| 650 | _ | 7 | |a Upsilon+mumu |2 autogen |
| 650 | _ | 7 | |a BPHYS |2 autogen |
| 693 | _ | _ | |a LHC |e LHC: ATLAS |1 EXP:(DE-588)4398783-7 |0 EXP:(DE-H253)LHC-Exp-ATLAS-20150101 |5 EXP:(DE-H253)LHC-Exp-ATLAS-20150101 |x 0 |
| 856 | 4 | _ | |y OpenAccess |u https://bib-pubdb1.desy.de/record/599325/files/ATLAS-CONF-2023-041.pdf |
| 856 | 4 | _ | |y OpenAccess |x pdfa |u https://bib-pubdb1.desy.de/record/599325/files/ATLAS-CONF-2023-041.pdf?subformat=pdfa |
| 909 | C | O | |o oai:bib-pubdb1.desy.de:599325 |p openaire |p open_access |p VDB |p driver |p dnbdelivery |
| 910 | 1 | _ | |a Deutsches Elektronen-Synchrotron |0 I:(DE-588b)2008985-5 |k DESY |b 0 |6 P:(DE-HGF)0 |
| 913 | 1 | _ | |a DE-HGF |b Forschungsbereich Materie |l Matter and the Universe |1 G:(DE-HGF)POF4-610 |0 G:(DE-HGF)POF4-611 |3 G:(DE-HGF)POF4 |2 G:(DE-HGF)POF4-600 |4 G:(DE-HGF)POF |v Fundamental Particles and Forces |x 0 |
| 914 | 1 | _ | |y 2023 |
| 915 | _ | _ | |a OpenAccess |0 StatID:(DE-HGF)0510 |2 StatID |
| 915 | _ | _ | |a Creative Commons Attribution CC BY 4.0 |0 LIC:(DE-HGF)CCBY4 |2 HGFVOC |
| 920 | 1 | _ | |0 I:(DE-H253)ATLAS-20120731 |k ATLAS |l LHC/ATLAS Experiment |x 0 |
| 980 | _ | _ | |a report |
| 980 | _ | _ | |a VDB |
| 980 | _ | _ | |a UNRESTRICTED |
| 980 | _ | _ | |a I:(DE-H253)ATLAS-20120731 |
| 980 | 1 | _ | |a FullTexts |
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