Results 31 to 40 of about 422,922 (221)

Gauge see-saw: A mechanism for a light gauge boson

open access: yesPhysics 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
doaj   +1 more source

Electroweak gauge boson parton distribution functions [PDF]

open access: yesJournal of High Energy Physics, 2018
Transverse and longitudinal electroweak gauge boson parton distribution functions (PDFs) are computed in terms of deep-inelastic scattering structure functions, following the recently developed method to determine the photon PDF. The calculation provides
B. Fornal, A. Manohar, W. Waalewijn
semanticscholar   +1 more source

Perturbativity constraints on U(1)B−L and left-right models and implications for heavy gauge boson searches [PDF]

open access: yesJournal of High Energy Physics, 2018
A bstractWe derive perturbativity constraints on beyond standard model scenarios with extra gauge groups, such as SU(2) or U(1), whose generators contribute to the electric charge, and show that there are both upper and lower limits on the additional ...
Garv Chauhan   +4 more
semanticscholar   +1 more source

Once more on the Higgs decay into two photons

open access: yesNuclear 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   +1 more source

17 MeV Atomki anomaly from short-distance structure of spacetime

open access: yesEuropean 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
doaj   +1 more source

Measurements of WH and ZH production in the $$H \rightarrow b\bar{b}$$ H → b b ¯ decay channel in pp collisions at $$13\,\text {Te}\text {V}$$ 13 Te with the ATLAS detector

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
Measurements of the Standard Model Higgs boson decaying into a $$b\bar{b}$$ b b ¯ pair and produced in association with a W or Z boson decaying into leptons, using proton–proton collision data collected between 2015 and 2018 by the ATLAS detector, are ...
The ATLAS Collaboration   +2952 more
doaj   +1 more source

Inclusive production cross sections at N3LO

open access: yesJournal 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
doaj   +1 more source

Searching for scalar boson decaying into light $$Z'$$ Z′ boson at collider experiments in $$U(1)_{L_\mu - L_\tau }$$ U(1)Lμ-Lτ model

open access: yesEuropean 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   +1 more source

Detecting the $L_{\mu}-L_{\tau}$ gauge boson at Belle II [PDF]

open access: yes, 2017
We discuss the feasibility of detecting the gauge boson of the U(1)Lμ-Lτ symmetry, which possesses a mass in the range between MeV and GeV, at the Belle-II experiment.
T. Araki   +4 more
semanticscholar   +1 more source

A variant two-Higgs doublet model with a new Abelian gauge symmetry

open access: yesPhysics Letters B, 2019
We consider a two-Higgs doublet model extended with a broken Abelian gauge symmetry under which all Standard Model (SM) quarks, fourth generation fermions and a new SM-singlet scalar boson are charged.
Chuan-Ren Chen   +2 more
doaj   +1 more source

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