Search for a muonic dark force at BABAR

The BaBar Collaboration, George Lafferty

    Research output: Contribution to journalArticlepeer-review

    68 Downloads (Pure)


    Many models of physics beyond the Standard Model predict the existence of new Abelian forces with new gauge bosons mediating interactions between "dark sectors" and the Standard Model. We report a search for a dark boson Z' coupling only to the second and third generations of leptons in the reaction e+e- -> mu+mu- Z', Z' -> mu+mu- using 514 fb-1 of data collected by the BABAR experiment. No significant signal is observed for Z' masses in the range 0.212 - 10 GeV. Limits on the coupling parameter g' as low as 7x10^-4 are derived, leading to improvements in the bounds compared to those previously derived from neutrino experiments.
    Original languageEnglish
    Article number011102(R)
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Publication statusPublished - 19 Jul 2016


    • hep-ex
    • hep-ph


    Dive into the research topics of 'Search for a muonic dark force at BABAR'. Together they form a unique fingerprint.

    Cite this