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Title: Search for a muonic dark force at BaBar
Author: Graugés Pous, Eugeni
BABAR Collaboration
Keywords: Partícules (Matèria)
Matèria fosca (Astronomia)
Dark matter (Astronomy)
Issue Date: 19-Jul-2016
Publisher: American Physical Society
Abstract: 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 − → μ + μ − Z ′ , Z ′ → μ + μ − 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 7 × 10 − 4 are derived, leading to improvements in the bounds compared to those previously derived from neutrino experiments.
Note: Reproducció del document publicat a:
It is part of: Physical Review D, 2016, vol. 94, num. 1, p. 11102-1-11102-7
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ISSN: 1550-7998
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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