Observation of an excess of dicharmonium events in the four-muon final state with the ATLAS detector
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00579073" target="_blank" >RIV/68378271:_____/23:00579073 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21220/23:00373806 RIV/68407700:21340/23:00373806 RIV/68407700:21670/23:00373806 RIV/00216208:11320/23:10476585 RIV/61989592:15310/23:73623094
Result on the web
<a href="https://hdl.handle.net/11104/0347972" target="_blank" >https://hdl.handle.net/11104/0347972</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.131.151902" target="_blank" >10.1103/PhysRevLett.131.151902</a>
Alternative languages
Result language
angličtina
Original language name
Observation of an excess of dicharmonium events in the four-muon final state with the ATLAS detector
Original language description
A search is made for potential ccc¯c¯ tetraquarks decaying into a pair of charmonium states in the four muon final state using proton-proton collision data at s=13 TeV, corresponding to an integrated luminosity of 140 fb-1 recorded by the ATLAS experiment at LHC. Two decay channels, J/ψ+J/ψ→4μ and J/ψ+ψ(2S)→4μ, are studied. Backgrounds are estimated based on a hybrid approach involving Monte Carlo simulations and data-driven methods. Statistically significant excesses with respect to backgrounds dominated by the single parton scattering are seen in the di-J/ψ channel consistent with a narrow resonance at 6.9 GeV and a broader structure at lower mass. A statistically significant excess is also seen in the J/ψ+ψ(2S) channel. The fitted masses and decay widths of the structures are reported.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
1079-7114
Volume of the periodical
131
Issue of the periodical within the volume
15
Country of publishing house
US - UNITED STATES
Number of pages
22
Pages from-to
151902
UT code for WoS article
001102901700001
EID of the result in the Scopus database
2-s2.0-85175279527