Results 31 to 40 of about 540 (118)
New physics contributions to moments of inclusive b → c semileptonic decays
Journal of High Energy Physics, 2023 Inclusive semileptonic B → X c ℓ ν ¯ ℓ $$ {X}_c\ell {\overline{\nu}}_{\ell } $$ decays, where ℓ = μ, e, are by now standard candles in the determination of the CKM element |V cb |. These determinations rely on the heavy-quark expansion and use moments of
Matteo Fael, Muslem Rahimi, K. Keri Vos
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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 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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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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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 PhysicsWe perform a systematic study of flavor-changing neutral currents (FCNCs) in the 331 model with right-handed neutrinos (331RHNs), analyzing constraints on the Z ′ boson mass from K-, D-, B d -, and B s -meson oscillations.
Patricio Escalona +3 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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Quantum detection of new physics in top-quark pair production at the LHC
Journal of High Energy PhysicsThe recent observation of entanglement between top and anti-top quarks at the LHC opens the way to interpreting collider data with quantum information tools. In this work we investigate the relevance of quantum observables in searches of new physics.
Fabio Maltoni +3 more
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