Results 61 to 70 of about 633 (144)
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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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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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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Complete UV resonances of the dimension-8 SMEFT operators
Journal of High Energy PhysicsThe effective field theory approach parameterizes the low energy behaviors of all possible ultraviolet (UV) theories in a systematic way. One of the most important tasks is thus to find the connection between the effective operators and their UV origins.
Hao-Lin Li +3 more
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Measuring the polarization of boosted, hadronic W bosons with jet substructure observables
Journal of High Energy PhysicsIn this work, we present a new technique to measure the longitudinal and transverse polarization fractions of hadronic decays of boosted W bosons. We introduce a new jet substructure observable denoted as p θ , which is a proxy constructed purely out of ...
Songshaptak De +2 more
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Systematic decomposition of dimension-11 short-range neutrinoless double beta decay operators
Journal of High Energy PhysicsNeutrinoless double beta decay (0νββ) may receive sizable contributions from short-range physics beyond the Standard Model. We present a systematic classification of all tree-level ultraviolet completions of the dimension-11 short-range 0νββ decay ...
Shi-Yu Li, Gui-Jun Ding
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Positivity from J-Basis operators in the standard model effective Field Theory
Journal of High Energy PhysicsIn the effective field theory (EFT), the positivity bound on dim-8 effective operators tells us that the s 2 contribution in the scattering amplitude of 2-to-2 process geometrically corresponds to the convex cone composed of the ultraviolet (UV) states ...
Chengjie Yang, Zhe Ren, Jiang-Hao Yu
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