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.

Search for a muonic dark force at BaBar

CENCI, RICCARDO;MARCHIORI, Giovanni;BATIGNANI, GIOVANNI;FORTI, FRANCESCO;LUSIANI, Alberto;FERRONI, FERNANDO;BIANCHI, Fabrizio;
2016

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.
2016
Settore FIS/01 - Fisica Sperimentale
File in questo prodotto:
File Dimensione Formato  
Search for a muonic dark force at BABAR.pdf

accesso aperto

Tipologia: Published version
Licenza: Solo Lettura
Dimensione 1.58 MB
Formato Adobe PDF
1.58 MB Adobe PDF
11384_65252.pdf

accesso aperto

Tipologia: Accepted version (post-print)
Licenza: Solo Lettura
Dimensione 903.83 kB
Formato Adobe PDF
903.83 kB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11384/65252
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 177
  • ???jsp.display-item.citation.isi??? 134
social impact