Zobrazeno 1 - 10
of 29
pro vyhledávání: '"J. Kriewald"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 2, Pp 1-36 (2024)
Abstract We study lepton flavour universality violation in SM boson decays in low-scale seesaw models of neutrino mass generation, also addressing other electroweak precision observables. We compute the electroweak next-to-leading order corrections,
Externí odkaz:
https://doaj.org/article/b6e2bbd8b9ce438eb58f5fa55e665042
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 6, Pp 1-28 (2023)
Abstract Heavy neutral leptons are motivated by several extensions of the Standard Model and their presence induces modifications in the lepton mixing matrix, including new Dirac and Majorana CP violating phases. It has been recently shown that these
Externí odkaz:
https://doaj.org/article/6457d40cfa4b42e3a2696c6bd4c852b9
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 9, Pp 1-27 (2022)
Abstract The apparent tensions emerging from the comparison of experimental data of the anomalous magnetic moments of the muon and electron to the Standard Model predictions ( $$\Delta a_{\mu ,e}$$ Δ a μ , e ) could be interpreted as a potential si
Externí odkaz:
https://doaj.org/article/42f0ae9bc4114c11b53718c0c578a485
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 3, Pp 1-32 (2022)
Abstract We consider an inverse seesaw mechanism of neutrino mass generation in which the Standard Model is extended by $$3+3$$ 3 + 3 (heavy) sterile states, and endowed with a flavour symmetry $$G_f$$ G f , $$G_f=\Delta (3 \, n^2)$$ G f = Δ ( 3 n 2
Externí odkaz:
https://doaj.org/article/bacf6b26ad1042db92a902050332f437
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 12, Pp 1-30 (2021)
Abstract Motivated by the recent experimental progress on the B-meson decay anomalies (in particular the angular observables in $$B\rightarrow K^*\mu \mu $$ B → K ∗ μ μ ), we rely on a simplified-model approach to study the prospects of vector
Externí odkaz:
https://doaj.org/article/acf267df6d454d2fbef434afb03604f8
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 11, Pp 1-27 (2021)
Abstract In extensions of the standard model by Majorana fermions, the presence of additional CP violating phases has been shown to play a crucial role in lepton number violating processes. In this work we show that (Dirac and Majorana) CP violating
Externí odkaz:
https://doaj.org/article/91cf5cd42b174fc79ee01dd5997949db
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 7, Pp 1-41 (2020)
Abstract Motivated by a simultaneous explanation of the apparent discrepancies in the light charged lepton anomalous magnetic dipole moments, and the anomalous internal pair creation in 8Be nuclear transitions, we explore a simple New Physics model,
Externí odkaz:
https://doaj.org/article/276652ad698b41b7b24847623f05b564
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 12, Pp 1-43 (2019)
Abstract In order to simultaneously account for both R D(∗) and R K (∗) anomalies in B-decays, we consider an extension of the Standard Model by a single vector leptoquark field, and study how one can achieve the required lepton flavour non-unive
Externí odkaz:
https://doaj.org/article/bc9668e85c984189a2e6fee75a3d7113
Akademický článek
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Publikováno v:
Eur.Phys.J.C
Eur.Phys.J.C, 2022, 82 (9), pp.844. ⟨10.1140/epjc/s10052-022-10776-1⟩
Eur.Phys.J.C, 2022, 82 (9), pp.844. ⟨10.1140/epjc/s10052-022-10776-1⟩
The apparent tensions emerging from the comparison of experimental data of the anomalous magnetic moments of the muon and electron to the Standard Model predictions ($\Delta a_{\mu,e}$) could be interpreted as a potential signal of New Physics. Model