Results 31 to 40 of about 572 (117)
Perturbative unitarity constraints on generic vector interactions
Journal of High Energy Physics, 2023 We study perturbative unitarity constraints on generic interactions between fermion and vector fields, which are allowed to have generic quantum numbers under a Π i SU(N i ) ⨂ U(1) group.
Daniele Barducci +2 more
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Lessons from the LHCb measurement of CP violation in B s → K + K −
Journal of High Energy Physics, 2022 The LHCb experiment measured the time-dependent CP asymmetries C KK and S KK in B s → K + K − decay. Combining with the corresponding CP asymmetries C ππ and S ππ in B → π + π − decay, we find that the size of U-spin breaking in this system is of order ...
Yosef Nir +2 more
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Searching for top-philic heavy resonances in boosted four-top final states
Journal of High Energy PhysicsNew heavy resonances with sizeable couplings to top quarks can be probed through searches for beyond-the-Standard-Model effects in four-top production at the LHC.
Luc Darmé +4 more
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Neutrino masses and magnetic moments of electron and muon in the Zee Model
Journal of High Energy Physics, 2022 We explore parameter space in the Zee Model to resolve the long-standing tension of the electron and muon anomalous magnetic moment (AMM). The model comprises a second Higgs doublet and a charged singlet at electroweak scale and generates Majorana ...
Rahool Kumar Barman +2 more
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A radiative neutrino mass model with leptoquarks under non-holomorphic modular A 4 symmetry
Journal of High Energy PhysicsWe investigate a radiative seesaw model with two leptoquarks under non-holomorphic modular A 4 symmetry. The leptons and quarks belong to non-trivial representations of the modular A 4 and the structures of their mass matrices are restricted.
Takaaki Nomura +2 more
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A non-linear representation of general scalar extensions of the Standard Model for HEFT matching
Journal of High Energy PhysicsWe introduce a non-linear representation of ultraviolet (UV) complete model, U representation, under which matching HEFT to general scalar extensions of the standard model is straightforward.
Huayang Song, Xia Wan
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Probing new physics with charge asymmetries in 2 same-sign leptons plus jets final states at the LHC
Journal of High Energy PhysicsWe study the impact of new physics models in the charge asymmetry defined for LHC final states consisting of two same-sign leptons (2SSl, with l = e, μ) plus jets (N jets ≥ 2), with a center-of-mass energy of s $$ \sqrt{s} $$ = 13 TeV, where the main SM ...
Ernesto Arganda +4 more
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Journal of High Energy PhysicsUnstable particles decay sooner or later, so they are not described by asymptotic one-particle states and they should not be included as independent states in unitarity relations such as the optical theorem.
Eugenio Megías +2 more
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Barr-Zee diagrams at a high-energy muon collider
Journal of High Energy PhysicsThe sensitivity of electron EDM experiments has been increasing at a rapid pace, and could yield indications of new physics in the coming decade. An intriguing possibility is that an EDM signal could be generated by new, electroweak-charged particles at ...
Samuel Homiller +3 more
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Journal of High Energy PhysicsWe consider extending the Standard Model by an anomaly-free and possibly flavour non-universal U(1) X gauge symmetry, whose breaking gives a Z′ boson that does not affect electroweak precision observables at tree-level or via 1-loop renormalisation group
Joe Davighi
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