Search for Invisible Decays of a Dark Photon Produced in ${e}^{+}{e}^{-}$ Collisions at BaBar - INSPIRE

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Search for Invisible Decays of a Dark Photon Produced in ${e}^{+}{e}^{-}$ Collisions at BaBar

BaBar

Collaboration

Feb 10, 2017

7 pages

Published in:

Phys.Rev.Lett. 119 (2017) 13, 131804

Published: Sep 28, 2017

e-Print:

1702.03327 [hep-ex]

DOI:

10.1103/PhysRevLett.119.131804

PDG: Hidden Photons: Kinetic Mixing Parameter Limits

Report number:

BABAR-PUB-17-001,
SLAC-PUB-16923

Experiments:

SLAC-PEP2-BABAR

View in:

reference search474 citations

Citations per year

Abstract: (APS)

We search for single-photon events in 53 fb-1 of e+e- collision data collected with the BABAR detector at the PEP-II B-Factory. We look for events with a single high-energy photon and a large missing momentum and energy, consistent with production of a spin-1 particle A′ through the process e+e-→γA′; A′→invisible. Such particles, referred to as “dark photons,” are motivated by theories applying a U(1) gauge symmetry to dark matter. We find no evidence for such processes and set 90% confidence level upper limits on the coupling strength of A′ to e+e- in the mass range mA′≤8 GeV. In particular, our limits exclude the values of the A′ coupling suggested by the dark-photon interpretation of the muon (g-2)μ anomaly, as well as a broad range of parameters for the dark-sector models.

Note:

9 pages, 13 figures; v2 is the version published in Physical Review Letters

electron positron: annihilation
electron positron: colliding beams
symmetry: gauge
momentum: missing-energy
photon: single production
spin: 1
photon: hidden sector
BaBar
SLAC PEP Stor
photon: invisible decay

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Figures(13)

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