Search for an Invisible Z' in a Final State with Two Muons and Missing Energy at Belle II
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476876" target="_blank" >RIV/00216208:11320/23:10476876 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ui7a1_WTeM" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ui7a1_WTeM</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.130.231801" target="_blank" >10.1103/PhysRevLett.130.231801</a>
Alternative languages
Result language
angličtina
Original language name
Search for an Invisible Z' in a Final State with Two Muons and Missing Energy at Belle II
Original language description
The L & mu; - L & tau; extension of the standard model predicts the existence of a lepton-flavor-universality -violating Z0 boson that couples only to the heavier lepton families. We search for such a Z0 through its invisible decay in the process e thorn e- & RARR; & mu; thorn & mu;-Z0. We use a sample of electron-positron collisions at a center -of-mass energy of 10.58 GeV collected by the Belle II experiment in 2019-2020, corresponding to an integrated luminosity of 79.7 fb-1. We find no excess over the expected standard-model background. We set 90%-confidence-level upper limits on the cross section for this process as well as on the coupling of the model, which ranges from 3 x 10-3 at low Z0 masses to 1 at Z0 masses of 8 GeV/c2.
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
—
OECD FORD branch
10300 - Physical sciences
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
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
130
Issue of the periodical within the volume
23
Country of publishing house
US - UNITED STATES
Number of pages
23
Pages from-to
231801
UT code for WoS article
001023742400002
EID of the result in the Scopus database
2-s2.0-85162825338