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Dark gauge boson production from neutron stars via nucleon-nucleon bremsstrahlung [PDF]
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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Gauge boson signals at the cosmological collider [PDF]
Journal of High Energy Physics, 2020 We study the production of massive gauge bosons during inflation from the axion-type coupling to the inflaton and the corresponding oscillatory features in the primordial non-Gaussianity.
Lian-Tao Wang, Zhong-Zhi Xianyu
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Gauge Boson - Gauge Boson Scattering in Theories with Large Extra Dimensions [PDF]
Physical Review D, 1999 We consider the scattering amplitudes of the form V_1 V_2 -> V_3 V_4, where V_i=\gamma, Z, W or g(=gluon) are the Standard Model gauge bosons, due to graviton exchange in Kaluza-Klein theories with large extra dimensions.
Amarjit Soni +44 more
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Light gauge boson interpretation for (g − 2) μ and the K L → π 0 + (invisible) anomaly at the J-PARC KOTO experiment [PDF]
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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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, 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
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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
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General structure of gauge boson propagator and its spectra in a hot magnetized medium [PDF]
European Physical Journal C: Particles and Fields, 2019 Based on transversality condition of gauge boson self-energy we have systematically constructed the general structure of the gauge boson two-point functions using four linearly independent basis tensors in presence of a nontrivial background i.e.
Bithika Karmakar +3 more
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Search for muon-philic new light gauge boson at Belle II [PDF]
Journal of High Energy Physics, 2019 Motivated by the long-lasting 3.5σ discrepancy in the anomalous magnetic moment of muon, we consider a new muon-specific force mediated by a light gauge boson, X, with mass m X
Yongsoo Jho +3 more
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Heavy Fermion Non-Decoupling Effects in Triple Gauge Boson Vertices [PDF]
, 2012 Within a spontaneously broken gauge group we carefully analyse and calculate triple gauge boson vertices dominated by triangle one-loop Feynman diagrams involving heavy fermions compared to external momenta and gauge boson masses.
Dedes, Athanasios, Suxho, Kristaq
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