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Search for an invisibly decaying $Z^prime$ boson at Belle II in $e^+ e^- o μ^+ μ^- (e^pm μ^mp)$ plus missing energy final states

Belle II Collaboration
•
I. Adachi
•
P. Ahlburg
altro
V. I. Zhukova
2019
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
Using data collected by the Belle II experiment during 2018 at the SuperKEKB collider, we perform the first searches for the invisible decay of a $Z^prime$ in the process $e^+ e^- o mu^+ mu^- Z^prime$ and of a lepton-flavor-violating $Z^prime$ in $e^+ e^- o e^pm mu^mp Z^prime$. We do not find any excess of events and set 90$%$ credibility level upper limits on the cross sections of these processes. We translate the former, in the framework of an $L_mu-L_ au$ theory, into upper limits on the $Z^prime$ coupling constant at the level of $5 imes 10^-2div1$ for $M_Z^primeleq 6$ GeV/$c^2$.
DOI
10.1103/PhysRevLett.124.141801
WOS
WOS:000523637800002
SCOPUS
2-s2.0-85084169899
Archivio
http://hdl.handle.net/11368/2955116
https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.124.141801
Diritti
open access
FVG url
https://arts.units.it/bitstream/11368/2955116/4/PhysRevLett.124.141801.pdf
Soggetti
  • High Energy Physics -...

  • High Energy Physics -...

Web of Science© citazioni
21
Data di acquisizione
Jun 14, 2022
Visualizzazioni
3
Data di acquisizione
Jun 8, 2022
Vedi dettagli
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