CP asymmetry in τ → Kπντ within non-minimal SU(5)

A bstract Direct CP asymmetry in semi-leptonic τ decays is an intriguing hint for new physics beyond the standard model. We investigate $$ {\tau}^{-}\to {K}_S^0{\pi}^{-}{\nu}_{\tau } τ − → K S 0 π ν and − → K π 0 ν context of non-minimal SU(5) model, with 45-dimensional Higgs multiplet. show that associate color-triplet scalar, which a natural example scalar leptoquark, can mediate \tau \to s\overline{u}{\nu}_{\tau s u ¯ transition account observed 2.8 σ discrepancy {A}_{\textrm{CP}}\left({\tau}^{-}\to {K}_S^0{\pi}^{-}{\nu}_{\tau}\right) A CP compared to SM expectation. also predict sizable ( ), \mathcal{O} O (10 3 be experimentally accessible current near future experiments.