Results 11 to 20 of about 1,567 (100)
Dark gauge boson production from neutron stars via nucleon-nucleon bremsstrahlung
Journal of High Energy Physics, 2022 We discuss the dark gauge boson emission from neutron stars via nucleon-nucleon bremsstrahlung. Through the rigorous treatment of the effective field theory prescription and the thermal effect, we derive the relevant couplings of dark gauge bosons to ...
Chang Sub Shin, Seokhoon Yun
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European Physical Journal C: Particles and Fields, 2021 We consider a model with gauged $$L_\mu ^{} - L_\tau ^{}$$ L μ - L τ symmetry in which the symmetry is spontaneously broken by a scalar field. The decay of the scalar boson into two new gauge bosons is studied as a direct consequence of the spontaneous ...
Takaaki Nomura, Takashi Shimomura
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Journal of High Energy Physics, 2020 Inspired by the Goldstone equivalence gauge, we study the thermal corrections to an originally massive vector boson by checking the poles and branch cuts. We find that part of the Goldstone boson is spewed out from the longitudinal polarization, becoming
Yi-Lei Tang
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Journal of High Energy Physics, 2020 We discuss a list of possible light gauge boson interpretations for the long- standing experimental anomaly in (g − 2) μ and also recent anomalous excess in K L → π 0 + (invisible) events at the J-PARC KOTO experiment.
Yongsoo Jho +4 more
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Structure of Chern-Simons scattering amplitudes from topological equivalence theorem and double-copy
Journal of High Energy Physics, 2022 We study the mechanism of topological mass-generation for 3d Chern-Simons (CS) gauge theories, where the CS term can retain the gauge symmetry and make gauge boson topologically massive.
Yan-Feng Hang, Hong-Jian He, Cong Shen
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Singlet fermionic dark matter with dark Z
European Physical Journal C: Particles and Fields, 2020 We present a fermionic dark matter model mediated by the hidden gauge boson. We assume the QED-like hidden sector which consists of a Dirac fermion and U(1)$$_X$$ X gauge symmetry, and introduce an additional scalar electroweak doublet field with the U(1)
Dong-Won Jung +4 more
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European Physical Journal C: Particles and Fields, 2020 In this paper we compute the electroweak corrections to the charged Higgs boson decay into a W boson and a neutral Higgs boson in the CP-conserving NMSSM.
Thi Nhung Dao +4 more
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Gauge see-saw: A mechanism for a light gauge boson
Physics Letters B, 2017 There has been rapidly growing interest in the past decade in a new gauge boson which is considerably lighter than the standard model Z boson. A well-known example of this kind is the so-called dark photon, and it is actively searched for in various ...
Hye-Sung Lee, Min-Seok Seo
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17 MeV Atomki anomaly from short-distance structure of spacetime
European Physical Journal C: Particles and Fields, 2020 An anomaly observed recently in the $$^8 \hbox {Be}$$ 8Be nuclear transition by the Atomki collaboration hints at a weakly-coupled, light new gauge boson with a mass of about 17 MeV.
Cao H. Nam
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Inclusive production cross sections at N3LO
Journal of High Energy Physics, 2022 We present for the first time the inclusive cross section for associated Higgs boson production with a massive gauge boson at next-to-next-to-next-to-leading order in QCD.
Julien Baglio +3 more
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