Results 21 to 30 of about 1,339 (163)
Current status on pair-produced muon-philic vectorlike leptons in multilepton channels at the LHC
Journal of High Energy Physics, 2023 In this work, we obtain the current limits on the pair production of vectorlike leptons decaying to a Standard Model gauge boson and a lepton in the second generation using the Run-2 data at the LHC.
Junichiro Kawamura, Seodong Shin
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The two scales of new physics in Higgs couplings
Journal of High Energy Physics, 2023 Higgs coupling deviations from Standard Model predictions contain information about two scales of Nature: that of new physics responsible for the deviation, and the scale where new bosons must appear. The two can coincide, but they do not have to.
Raffaele Tito D’Agnolo +3 more
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Pseudoscalar portal dark matter and new signatures of vector-like fermions [PDF]
Journal of High Energy Physics, 2016 Fermionic dark matter interacting with the Standard Model sector through a pseudoscalar portal could evade the direct detection constraints while preserving a WIMP miracle. We study the LHC constraints on the pseudoscalar production in simplified models with the pseudoscalar either dominantly coupled to b quarks or tau leptons and explore their ...
Fan, JiJi +2 more
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Integrating out new fermions at one loop
Journal of High Energy Physics, 2021 We present the fermionic universal one-loop effective action obtained by integrating out heavy vector-like fermions at one loop using functional techniques. Even though previous approaches are able to handle integrating out heavy fermions with non-chiral
Andrei Angelescu, Peisi Huang
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Vector-like fermion and standard Higgs production at hadron colliders [PDF]
Nuclear Physics B, 1990 Vector-like fermions are characterized by large neutral current decay rates, in particular into Higgs bosons. If they exist, their clear signals at hadron colliders open a window to Higgs detection, especially to the intermediate Higgs mass region. We discuss in some detail rates and signatures for simple cases. Research supported in part by the US DOE
del Aguila, F. +3 more
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Partial compositeness under precision scrutiny
Journal of High Energy Physics, 2022 We revisit the impact of top partial compositeness on electroweak precision observables in the misaligned vacuum basis. We identify a new source for S in the singlet mixing case, and for S-T in the bi-doublet mixing, stemming from misalignment in the ...
Haiying Cai, Giacomo Cacciapaglia
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Scalar Resonance at 750 GeV as Composite of Heavy Vector-Like Fermions [PDF]
Communications in Theoretical Physics, 2016 12 pages, no figure, references updated, version for ...
Liao, Wei, Zheng, Han-qing
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W boson mass anomaly and grand unification
Physics Letters B, 2022 It is known that the recently reported shift of the W boson mass can be easily explained by an SU(2)L triplet Higgs boson with a zero hypercharge if it obtains a vacuum expectation value (VEV) of O(1) GeV.
Jason L. Evans +2 more
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Modelling vector-like quarks in partial compositeness framework
Journal of High Energy Physics, 2022 Composite Higgs models, together with partial compositeness, predict the existence of new scalars and vector-like quarks (partners) at and above the TeV scale.
Avik Banerjee +2 more
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On the implications of positive W mass shift
Journal of High Energy Physics, 2022 We investigate the phenomenological implications of the recent W mass measurement by the CDF collaboration, which exhibits tension with the standard model (SM) electroweak fit.
Reuven Balkin +5 more
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