Speaker
Description
Soft drop jet mass is an attractive candidate for precision measurements such as the top mass $m_t$ and the strong coupling constant $\alpha_s$, as it can be perturbatively calculable to high accuracy besides being more robust against nonperturbative and underlying event corrections. In this talk I will describe the prospects for the top mass and $\alpha_s$-determination at the LHC using soft drop jet mass by combining state-of-the-art resummed predictions with a field theoretic treatment of nonperturbative power corrections. I will show that the observable is promising for $m_t$ measurement in a definite top mass scheme with ${\cal O}(1)$ GeV uncertainty. On the other hand, the dominant uncertainty in the $\alpha_s$-determination is limited by nonperturbative corrections, and for measurements on $p_T \geq 1$ TeV, is saturated to about 2%.
