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/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We compute the baryon asymmetry in decay and scattering processes involvingthe electromagnetically charge-neutral fermion $\chi$ that carries nonzerobaryon number and interacts with quark-like fermions $U,D$ via a vector-vectordimension-six effective operator, in the theory we developed in our earlierwork. Majorana masses, that break baryon number, split the Dirac fermion $\chi$into a pair of Majorana fermions $\chi_n$ with indefinite baryon number. Weidentify loop amplitudes for $\chi_n$ decay and scattering processes that aresensitive to the baryon number violation. The phases in the Majorana mass andcouplings, in conjunction with a phase of $\pi/2$ from intermediate onshell$U,D$ in the loop, lead to $C$ and $CP$ violation in these processes. For somerepresentative parameter choices, we numerically compute the decay andscattering baryon asymmetries between the process and its conjugate process,and find that the asymmetry generated is phenomenologically very interesting.

Baryon Asymmetry from the Decay and Scattering of a Majorana Fermion Pair Coupled to Quarks