Results 1 to 10 of about 109,961 (195)
Gauge Dependence of the Gauge Boson Projector [PDF]
Particles, 2020 The propagator of a gauge boson, like the massless photon or the massive vector bosons W± and Z of the electroweak theory, can be derived in two different ways, namely via Green’s functions (semi-classical approach) or via the vacuum expectation value of
Priidik Gallagher +2 more
doaj +2 more sources
Once more on the Higgs decay into two photons
Nuclear Physics B, 2018 We comment on the recently reiterated claim that the contribution of the W-boson loop to the Higgs boson decay into two photons leads to different expressions in the Rξ gauge and the unitary gauge.
J. Gegelia, Ulf-G. Meißner
doaj +4 more sources
European Physical Journal C: Particles and Fields, 2019 We study a model with $$U(1)_{L_\mu - L_\tau }$$ U(1)Lμ-Lτ gauge symmetry and discuss collider searches for a scalar boson, which breaks $$U(1)_{L_\mu - L_\tau }$$ U(1)Lμ-Lτ symmetry spontaneously, decaying into light $$Z'$$ Z′ gauge boson. In this model,
Takaaki Nomura, Takashi Shimomura
doaj +3 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
CDF W mass anomaly with a Stueckelberg-Higgs portal
Physics Letters B, 2022 We propose an explanation to the new W mass measurement recently reported by the CDF collaboration, which is larger than the standard model expectation by about 7 standard deviations.
Mingxuan Du, Zuowei Liu, Pran Nath
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
A heavy neutral gauge boson near the Z boson mass pole via third generation fermions at the LHC
Physics Letters B, 2020 We explore the physics of a new neutral gauge boson, (Z′), coupling to only third-generation particles and with a mass near the electroweak gauge boson mass poles. A Z′ boson produced by top quarks and decaying to tau leptons is considered. With a simple
Mohammad Abdullah +4 more
doaj +1 more source