Conveners
Beyond the Standard Model Phenomenology 2
- Kaladi Babu
We propose an $E_6$-inspired Pati-Salam (PS) model that naturally accommodates multi-TeV leptoquark gauge bosons, $X_\mu$, while incorporating an unbroken discrete $Z_2$ symmetry. In this model, Standard Model (SM) fermions are $Z_2$-even, while exotic fermions in the PS multiplets are $Z_2$-odd. A notable feature is that the PS gauge bosons are $Z_2$-odd, resulting in their coupling...
We propose a solution to the strong CP problem that specifically relies on massless quarks and has no light axion. The QCD color group $SU(3)_c$ is embedded into a larger, simple gauge group (grand-color) where one of the massless, colored fermions enjoys an anomalous chiral symmetry, rendering the strong CP phase unphysical. The grand-color gauge group $G_{\rm GC}$ is Higgsed down to...
The axion solution to the strong CP problem is closely entwined with the flavor structure of the standard model. So our model attempts at explaining the Flavor puzzle through the Frogatt Nielsen mechanism where the $U(1)_F$ flavor symmetry is gauged and we thereby end up with a "quality axion" as the result of a residual $U(1)_{PQ}$ symmtery. This is achieved in a DFSZ like scenario with a...
We perform a simulation of dark-vector production from electromagnetic cascades at SHiP. The cascades are initiated by photons from $\pi^0\rightarrow \gamma \gamma$, and lead to substantial increases in sensitivity for long-lived dark vectors with masses below $\sim 50-300~{\rm MeV}$. The dominant production mode in the regions of new sensitivity is $e^+ e^- \rightarrow V(\gamma)$. New...
