We search for a new gauge boson Z′ that couples only to heavy leptons and their corresponding neutrinos in the process e+e-→Z′(→μ+μ-)μ+μ-, using a 643 fb-1 data sample collected by the Belle experiment at or near the ϒ(1S,2S,3S,4S,5S) resonances at the KEKB collider. While previous searches for Z′ performed a data-based estimation of the initial state radiation effect, our search for the Z′ is the first to include effects due to initial state radiation in the signal simulated samples that were used in estimating the detection efficiency. No signal is observed in the Z′ mass range of 0.212-10 GeV/c2, and we set an upper limit on the coupling strength, g′, constraining the possible Z′ contribution to the anomalous magnetic dipole moment of th...
International audienceTheories beyond the standard model often predict the existence of an additiona...
© 2019 The Author(s) A search for a narrow Z ′ gauge boson with a mass between 5 and 70 GeV resulti...
A search for a narrow Z ′ gauge boson with a mass between 5 and 70 GeV resulting from an L μ −L τ U(...
We search for a new gauge boson Z′ that couples only to heavy leptons and their corresponding neutri...
We search for a new gauge boson Z′ that couples only to heavy leptons and their corresponding neutri...
International audienceWe search for a new gauge boson Z′ that couples only to heavy leptons and thei...
We search for a new gauge boson Z′ that couples only to heavy leptons and their corresponding neutri...
International audienceWe search for a new gauge boson Z′ that couples only to heavy leptons and thei...
Theories beyond the standard model often predict the existence of an additional neutral boson, the Z...
Theories beyond the standard model often predict the existence of an additional neutral boson,the Z′...
The standard model (SM) of particle physics is currently the best known description of the fundament...
Published 7 June 2023The Lμ − Lτ extension of the standard model predicts the existence of a lepton-...
Theories beyond the standard model often predict the existence of an additional neutral boson, the Z...
International audienceTheories beyond the standard model often predict the existence of an additiona...
© 2019 The Author(s) A search for a narrow Z ′ gauge boson with a mass between 5 and 70 GeV resulti...
A search for a narrow Z ′ gauge boson with a mass between 5 and 70 GeV resulting from an L μ −L τ U(...
We search for a new gauge boson Z′ that couples only to heavy leptons and their corresponding neutri...
We search for a new gauge boson Z′ that couples only to heavy leptons and their corresponding neutri...
International audienceWe search for a new gauge boson Z′ that couples only to heavy leptons and thei...
We search for a new gauge boson Z′ that couples only to heavy leptons and their corresponding neutri...
International audienceWe search for a new gauge boson Z′ that couples only to heavy leptons and thei...
Theories beyond the standard model often predict the existence of an additional neutral boson, the Z...
Theories beyond the standard model often predict the existence of an additional neutral boson,the Z′...
The standard model (SM) of particle physics is currently the best known description of the fundament...
Published 7 June 2023The Lμ − Lτ extension of the standard model predicts the existence of a lepton-...
Theories beyond the standard model often predict the existence of an additional neutral boson, the Z...
International audienceTheories beyond the standard model often predict the existence of an additiona...
© 2019 The Author(s) A search for a narrow Z ′ gauge boson with a mass between 5 and 70 GeV resulti...
A search for a narrow Z ′ gauge boson with a mass between 5 and 70 GeV resulting from an L μ −L τ U(...