Jul 6 – 13, 2022
Bologna, Italy
Europe/Rome timezone

Exploring SMEFT operators through single top-quark production associated with the Higgs boson at the LHC

Jul 7, 2022, 5:30 PM
Room 5 (Avorio)

Room 5 (Avorio)

Parallel Talk Higgs Physics Higgs Physics


Arnab Roy (Tata Institute of Fundamental Research)


The Standard Model effective field theory (SMEFT) provides a general framework
to include the effects of the beyond standard model physics residing at a certain higher energy scale $\Lambda$. We focus on the modification of top-quark Yukawa coupling, which is one of the important avenues to study EWSB. With this motivation, we consider the production of the tHq process at the LHC. In this context, relevant sensitive dimension-6 SMEFT operators are identified. Those operators, relevant to the tHq production process, are constrained using the latest LHC data that are directly sensitive to these operators. We develop a strategy of constraining these operators providing a complementary way to the global-fit approach. The preferable ranges of those operators are presented along with their best fit values. Finally, we will discuss the feasibility of finding the signatures of those operators at the LHC corresponding to high luminosity
options $\rm 300~fb^{-1}$ and $\rm 3000~fb^{-1}$. This work is almost complete and we are working on preparing the draft.

In-person participation Yes

Primary authors

Arnab Roy (Tata Institute of Fundamental Research) Prof. Monoranjan Guchait (Tata Institute of Fundamental Research)

Presentation materials