Results 21 to 30 of about 67,835 (263)
Displaced searches for light vector bosons at Belle II
Journal of High Energy Physics, 2022 With a design luminosity of 50 ab −1 and detectors with tracking capabilities extending beyond 1 m, the Belle II experiment is the perfect laboratory for the search of particles that couple weakly to the Standard Model and have a characteristic decay ...
Triparno Bandyopadhyay +2 more
doaj +1 more source
Resolving the muon g − 2 tension through Z′-induced modifications to σ had
Journal of High Energy Physics, 2023 The QED hadronic vacuum polarization function plays an important role in the determination of precision electroweak observables and of the anomalous magnetic moment of the muon.
Nina M. Coyle, Carlos E. M. Wagner
doaj +1 more source
Journal of High Energy Physics, 2022 In this work, we explore new spin-1 states with axial couplings to the standard model fermions. We develop a data-driven method to estimate their hadronic decay rates based on data from τ decays and using SU(3)flavor symmetry.
Chaja Baruch +3 more
doaj +1 more source
On (g − 2) μ from gauged U(1) X
Journal of High Energy Physics, 2022 We investigate an economical explanation for the (g − 2) μ anomaly with a neutral vector boson from a spontaneously broken U(1) X gauge symmetry. The Standard Model fermion content is minimally extended by 3 right-handed neutrinos.
Admir Greljo +3 more
doaj +1 more source
New constraint on dark photon at T2K off-axis near detector
Journal of High Energy Physics, 2023 The T2K experiment is one of the most powerful long-baseline experiments to investigate neutrino oscillations. The off-axis near detector called ND280 is installed 280 m downstream from the neutrino production target to measure the neutrino energy ...
Takeshi Araki +5 more
doaj +1 more source
Leptophilic gauge bosons at lepton beam dump experiments
Journal of High Energy Physics, 2023 It has been recently known that we can use beams of future lepton colliders, the International Linear Collider (ILC), the Compact Linear Collider (CLIC), and the muon collider, for beam dump experiment if a shield and a detector are installed behind the ...
Takeo Moroi, Atsuya Niki
doaj +1 more source
Terrestrial detection of hidden vectors produced by solar nuclear reactions
Journal of High Energy Physics, 2023 Solar nuclear reactions can occasionally produce sub-MeV elusive beyond the Standard Model particles that escape the solar interior without further interactions. This study focuses on massive spin-one particles.
Francesco D’Eramo +3 more
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Flatland: abelian extensions of the Standard Model with semi-simple completions
Journal of High Energy Physics, 2022 We parametrise the space of all possible flavour non-universal u $$ \mathfrak{u} $$ (1) X extensions of the Standard Model that embed inside anomaly-free semi-simple gauge theories, including up to three right-handed neutrinos.
Joe Davighi, Joseph Tooby-Smith
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Measuring properties of a dark photon from semi-invisible decay of the Higgs boson
Journal of High Energy Physics, 2022 Considerable efforts have been dedicated to discovering a dark photon via the decay of the Higgs boson to a photon and an invisible particle. A subject that is still mostly unexplored is which properties of the dark photon could be measured at the LHC if
Hugues Beauchesne, Cheng-Wei Chiang
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Journal of High Energy Physics, 2022 We study the sensitivity of the High-Luminosity LHC to a light baryonic dark photon B, primarily coupled to quarks, as a constituent of the proton. This is achieved by allowing for a dark photon parton distribution function (PDF) in the PDF evolution ...
Matthew McCullough +2 more
doaj +1 more source