Collider phenomenology of a unified leptoquark model

• DOI: 10.1103/physrevd.101.095024
• Publication Date: 2020-05-20T16:51:28Z
• Authors: T. Faber; Y. Liu; W. Porod; M. Hudec; M. Malinský; F. Staub; H. Kolešová
• Keywords: Leptoquark; Neutral current; Missing energy

We demonstrate that in a recently proposed unified leptoquark model based on the gauge group $SU(4)_C\times SU(2)_L \times U(1)_R$ significant deviations from Standard Model values of $R_K$ and $R_{K^*}$ can be accommodated without any need extra heavy fermions. Low energy data, particular lepton flavour violating $\mu$ decays $K_L\to e \mu$, severely constrain available parameter space. show allowed part space (i) some lepton-flavour-violating tau decay branching ratios are predicted to close their current experimental limits. (ii) The underlying scalar leptoquarks probed at LHC via dominant modes into tau-leptons electrons third generation quarks. (iii) constraints meson oscillations imply masses gluons, another pair coloured multiplets around, have bigger than around 15 TeV and, thus, they only future 100 collider. In both neutral charged variants, these scalars predominantly quarks, with up $O$(10\%) family-mixed final states. Besides that, we comment phenomenology gluons scenarios case $B$-decay anomalies eventually disappear.