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Dark mediator searches at KLOE/KLOE-2

  • INFN-Laboratori Nazionali di Frascati, Via E. Fermi 40, 00044 Frascati (RM), Italy

Cite this: JUSTC, 2016, 46(7): 587-593
https://doi.org/10.3969/j.issn.0253-2778.2016.07.008
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  • Author Bio:

    PREZ DEL RO Elena (for the KLOE- Collaboration): PREZ DEL RO Elena, female, born in 1981, PhD. Research field: high energy physics. E-mail: eperez@lnf.infn.it

  • Received Date: November 29, 2015
  • Revised Date: April 19, 2016
  • Published Date: July 30, 2016
    Abstract
  • The existence of a new vector boson has been postulated in different scenarios where the coupling to the SM can be achieved either via a kinetic mixing term, the U boson, or by coupling to the baryon number, the B boson. Direct searches for these dark matter mediators are performed at accelerator facilities. The KLOE detector at the DANE Φ-factory has been prolific in searches for the U boson in both Dalitz decays of the  meson, →ηU with U→e+e-, and continuum events, e+e-→Uγ. For all of these processes, an upper limit for the U boson coupling ε2 of 10-7 to 10-5 has been established in the mass range 4 MeV·c-2
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