English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Pro

Presents the zaia usage as premium feature

ZAIA

Presents AI Discovery search usage as a premium feature

AI Discovery

Presents AI Discovery explain and summary usage as a premium feature

Content Analysis

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Presents the pdf analysis as premium feature

PDF Analysis

1500 Top-up

3000 Top-up

Zendy Basic

2500 Top-up

Zendy Unlimited

Presents the access of premium content as premium feature

Premium Content

We consider a neutrino mass generating model which employs a scalarleptoquark, $\Delta$, and a scalar diquark, $S$. The new scalars $\Delta$ and$S$ carry the standard model $SU(3)_c\times SU(2)_L\times U(1)_Y$ quantumnumbers $(3,1,-1/3)$ and $(6,1,-2/3)$, respectively. The neutrino masses aregenerated at the two-loop level, as in the Zee-Babu model\cite{Zee-Babu}, and$\Delta/S$ plays the role of the doubly/singly charged scalar in the Zee-Babumodel. With a moderate working assumption that the magnitudes of the six Yukawacouplings between $S$ and the down-type quarks are of the same order, strongconnections are found between the neutrino masses and the charged lepton flavorviolating processes. In particular, we study $Z\rightarrow \overline{l} l'$,and $l\rightarrow l' \gamma$ and find that some portions of the parameter spaceof this model are within the reach of the planned charged lepton flavorviolating experiments. Interesting lower bounds are predicted that$B(Z\rightarrow \overline{l} l')\gtrsim10^{-16}-10^{-14}(10^{-14})\times(1\mbox{TeV}\cdot m_S/7 m_\Delta^2)^2$ and$B(l\rightarrow l' \gamma)\gtrsim 10^{-17}-10^{-16}(10^{-18}-10^{-16})\times(1\mbox{TeV}\cdot m_S/7 m_\Delta^2)^2$ for neutrino masses being thenormal(inverted) hierarchical pattern. The type of neutrino mass hierarchycould also be determined by measuring the charged lepton flavor violatingdouble ratios. Moreover, definite leptoquark decay branching ratios arepredicted when there is no Yukawa interaction between the right-handed fermionsand $\Delta$ ( the branching fraction of $\Delta$ to a charged lepton and aquark is 50\%), which could help refine the collider search limit on the scalarleptoquark mass.

Charged Lepton Flavor Violating Processes and Scalar Leptoquark Decay Branching Ratios in the Colored Zee-Babu Model