Zobrazeno 1 - 10
of 713
pro vyhledávání: '"A. Ardu"'
Dark sectors provide beyond Standard Model scenarios which can address unresolved puzzles, such as the observed dark matter abundance or the baryon asymmetry of the Universe. A naturally small portal to the dark sector is obtained if dark-sector inte
Externí odkaz:
http://arxiv.org/abs/2407.21100
Autor:
Ardu, Marco, Marcano, Xabier
In this work we consider the Standard Model Effective Field Theory extended with right-handed neutrinos, the $\nu$SMEFT, and calculate the full set of one-loop anomalous dimensions that are proportional to Yukawa couplings. These contributions are pa
Externí odkaz:
http://arxiv.org/abs/2407.16751
Upcoming experiments will improve the sensitivity to $\mu\to e$ processes by several orders of magnitude, and could observe lepton flavour-changing contact interactions for the first time. In this paper, we investigate what could be learned about New
Externí odkaz:
http://arxiv.org/abs/2401.06214
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 11, Pp 1-25 (2024)
Abstract Dark sectors provide beyond Standard Model scenarios which can address unresolved puzzles, such as the observed dark matter abundance or the baryon asymmetry of the Universe. A naturally small portal to the dark sector is obtained if dark-se
Externí odkaz:
https://doaj.org/article/5de5997bc2704ca5abf62da78212c2a8
Autor:
Marco Ardu, Xabier Marcano
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 10, Pp 1-23 (2024)
Abstract In this work we consider the Standard Model Effective Field Theory extended with right-handed neutrinos, the νSMEFT, and calculate the full set of one-loop anomalous dimensions that are proportional to Yukawa couplings. These contributions
Externí odkaz:
https://doaj.org/article/6ca81f73f1d24cf6b0a3218b3c871aa9
Upcoming experiments will improve the reach for the lepton flavour violating (LFV) processes $\mu \to e \gamma$, $\mu \to e \bar{e} e$ and $\mu A \to e A$ by orders of magnitude. We investigate whether this upcoming data could rule out some popular T
Externí odkaz:
http://arxiv.org/abs/2308.16897
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 84, Iss 5, Pp 1-36 (2024)
Abstract Upcoming experiments will improve the sensitivity to $$\mu \rightarrow e$$ μ → e processes by several orders of magnitude, and could observe lepton flavour-changing contact interactions for the first time. In this paper, we investigate wh
Externí odkaz:
https://doaj.org/article/574699bf522a43ce9be7f4778ca41f19
We construct a semi-inclusive Lepton Flavour Universality (LFU) ratio, $R_\Sigma$, to test $\mu/e$ universality in $b\to s\ell^+\ell^-$ transitions at $e^+e^-$ $B$-meson factories. Combining different decay channels, this observable maximises the sen
Externí odkaz:
http://arxiv.org/abs/2207.12420
Autor:
Ardu, Marco, Kirk, Fiona
Publikováno v:
EPJC 83 (2023) 5, 394
We extend the Standard Model gauge group by $U(1)_{L_e-L_\mu}$ and introduce two scalars, a doublet and a singlet, that are charged under this new group and have lepton flavour violating couplings. Since in this model $\mu \to e$ processes can only b
Externí odkaz:
http://arxiv.org/abs/2205.02254
Autor:
Ardu, Marco, Pezzullo, Gianantonio
Publikováno v:
Universe 2022, 8, 299
Neutrino masses provide evidence of lepton flavour violation, but no violation in the interactions among the charged leptons has been observed yet. Many models of Physics Beyond the Standard Model (BSM) predict Charged Lepton Flavour Violation (CLFV)
Externí odkaz:
http://arxiv.org/abs/2204.08220