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Search for dark photon and long-lived particles at BaBar

  • 1.

    Scuola Normale Superiore, piazza dei Cavalieri 7, Pisa PI 56125, Italy

  • 2.

    Instituto Nazionale di Fisica Nucleare, sezione di Pisa, Largo Bruno Pontecorvo 3, 56127 Pisa PI, Italy

Cite this: JUSTC, 2016, 46(7): 601-607
https://doi.org/10.3969/j.issn.0253-2778.2016.07.010
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  • Author Bio:

    LUSIANI A. (for the BaBar Collaboration): LUSIANI A., PhD. Research field: high energy physics. E-mail: alberto.lusiani@pi.infn.it

  • Received Date: November 29, 2015
  • Revised Date: April 19, 2016
  • Published Date: July 30, 2016
    Abstract
  • The complete large and clean sample of e+e- collisions recorded by the BaBar detector at PEP-II at the SLAC National Laboratory was used to search for a photon-like particle with mass and decaying into an e+e- or μ+μ- pair, which is proposed in some Dark Matter theory models, and to search for a long-lived particle that decays into an oppositely charged fermion pair, predicted in a number of New Physics models. We do not observe a significant signal and we set 90% confidence level upper limits of several production rates and on the parameters of some proposed New Physics models.
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