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Search for Axionlike Particles Produced in e+e- Collisions at Belle II

Abudinen F.
•
Adachi I.
•
Aihara H.
altro
Zhukova V. I.
2020
  • journal article

Periodico
PHYSICAL REVIEW LETTERS
Abstract
We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e+e-→γa, a→γγ in the mass range 0.2<9.7 GeV/c2 using data corresponding to an integrated luminosity of (445±3) pb-1. Light pseudoscalars interacting predominantly with standard model gauge bosons (so-called axionlike particles or ALPs) are frequently postulated in extensions of the standard model. We find no evidence for ALPs and set 95% confidence level upper limits on the coupling strength gaγγ of ALPs to photons at the level of 10-3 GeV-1. The limits are the most restrictive to date for 0.2<1 GeV/c2.
DOI
10.1103/PhysRevLett.125.161806
WOS
WOS:000577074900004
Archivio
http://hdl.handle.net/11368/2983934
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85094933955
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.161806
Diritti
open access
license:creative commons
license uri:http://creativecommons.org/licenses/by/4.0/
FVG url
https://arts.units.it/bitstream/11368/2983934/1/PhysRevLett.125.161806.pdf
Soggetti
  • Belle II

  • SuperKEKB

  • Rare decay

  • axionlike particle

  • ALP

Scopus© citazioni
19
Data di acquisizione
Jun 14, 2022
Vedi dettagli
Web of Science© citazioni
36
Data di acquisizione
Mar 25, 2024
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