Searching for dark photons in hyperon decays

Abstract

That massless dark photons could exist and have flavor-changing magnetic-dipole interactions with down-type light quarks is an attractive possibility which may be realized in various new-physics scenarios. It is potentially testable not only in kaon processes but also via two-body hyperon decays involving missing energy carried away by the massless dark photon. We explore the latter within a simplified model approach and take into account constraints from the kaon sector. We find that the branching fractions of some of these hyperon modes are allowed to be as high as a few times $10^{-4}$. Such numbers are likely to be within the sensitivity reaches of ongoing experiments like BESIII and future ones at super charm-tau factories.

arXiv comment8 pages, no figure, somewhat expanded, references added, matches publication

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Cited by in corpus (12)

• The Dark Photon
• Supernova Constraints on Dark Flavored Sectors
• Search for a massless dark photon in ${\Lambda }_c^{+}\to p{\gamma }^{\prime }$ decay
• Seeking massless dark photons in the decays of charmed hadrons
• Exploring leptoquark effects in hyperon and kaon decays with missing energy
• Kaon decays shedding light on massless dark photons
• Probing new physics with the kaon decays $K\to \pi \pi /E$
• FCNC charmed-hadron decays with invisible singlet particles in light of recent data
• Flavor phenomenology of light dark sectors
• Search for the massless dark photon with $D^0\to \omega {\gamma }^{\prime }$ and $D^0\to \gamma {\gamma }^{\prime }$
• $\Delta S=2$ nonleptonic hyperon decays as probes of new physics
• New Physics Searches at Kaon and Hyperon Factories