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Título:
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Search for a muonic dark force at BaBar
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Autor/a:
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Graugés Pous, Eugeni; BABAR Collaboration
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Otros autores:
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Universitat de Barcelona |
Abstract:
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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. |
Materia(s):
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-Partícules (Matèria) -Matèria fosca (Astronomia) -Particles -Dark matter (Astronomy) |
Derechos:
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(c) American Physical Society, 2016
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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American Physical Society
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