Search for Invisible Decays of a Dark Photon Produced in ${e}^{+}{e}^{−}$ Collisions at <i>B<span class=”sc”>a</span>B<span class=”sc”>ar</span></i>

Author(s): J. P. Lees et al. (BaBar Collaboration)

The lack of so-called “dark photons” in electron-positron collision data rules out scenarios in which these hypothetical particles explain the muon’s magnetic moment

[Phys. Rev. Lett. 119, 131804] Published Thu Sep 28, 2017