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Searches for invisible new particles at Belle II

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arxiv 2401.07845 v1 pith:WMCG6IMU submitted 2024-01-15 hep-ex hep-ph

Luigi Corona (on behalf of the Belle II Collaboration) This is my paper · ORCID
classification hep-exhep-ph
keywords particlesbelledarkdecaysinvisibleproducedscalarssearches
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Belle~II has unique sensitivity for a broad class of models postulating the existence of dark matter particles with masses in the MeV--GeV range. We present recent world-leading results from Belle~II searches for several non-SM particles. These include production of $Z'$ bosons, axion-like particles, and dark scalars in association with two muons in $e^+e^-$ collisions; long-lived (pseudo)scalars produced in decays of \textit{B}-mesons; and invisible particles produced in decays of $\tau$ leptons.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. High Energy Photon Polarimetry at Lepton Colliders: Quantum Information from Converted Photons

    hep-ph 2026-07 conditional novelty 6.5 of 10

    Converted photons in Belle II enable high-significance measurements of Bell nonlocality, discord, concurrence, magic and steerability for macroscopically separated GeV diphotons, provided opening-angle resolution reac...

  2. Invisible decays of vector Charmonia and Bottomonia to determine the Weak Mixing Angle at quarkonia scale

    hep-ph 2024-11 conditional novelty 4.0 of 10

    The invisible branching fractions of J/psi, psi(2S), and Upsilon(nS) to neutrino pairs are predicted at the 10^-8 to 10^-5 level, offering a way to measure the weak mixing angle at quarkonia mass scales.

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