7th ComHEP: Colombian Meeting on High Energy Physics

Searches of new physics in the final state Bτν in pp collisions

1 Dec 2022, 16:20

20m

Regular Talk (15'+5') Beyond the standard model LHC results

Speaker

Tomas Atehortua Garces (Universidad de Antioquia (CO))

Description

The $R_{D^{(\ast )}}$ anomaly is one of the most intriguing experimental results in particle physics. Experiments as BaBar, Belle and LHCb have measured a consistent tension with the standard model. In this work we study a consequence of different solutions to this tension as a sequential ${\mathrm{W}}^{\prime }$ boson, EFT and leptoquark. Such models, are not only able to explain the $R_{D^{(\ast )}}$ anomaly but also to produce distinctive signatures at the LHC. We proposed a search for the signature $\mathrm{b},\tau ,p_T^{miss}$ maximizing the statistical significance with regard to standard model backgrounds as $W^{\pm }+\text{jets}$, $Z^0+\text{jets}$ and $t\overline{t}$. We finally show how the different models require a differentiated selection criteria and the exclusion that can be achieved.

Presentation materials

EXPO_COMHEP.pdf