Speaker
Description
The weak mixing angle is a probe of the vector-axial coupling structure of electroweak interactions. It has been measured precisely at the $Z$-pole by experiments at the LEP and SLD colliders, but its energy dependence above $𝑚_Z$ remains unconstrained.
In this contribution we propose to exploit measurements of Neutral-Current Drell-Yan at large invariant dilepton masses at the Large Hadron Collider to determine the scale dependence of the weak mixing angle in the $\overline{MS}$ renormalisation scheme, $\sin^2\theta_W(\mu)$.
Such a measurement can be used to test the Standard Model predictions for the $\overline{MS}$ running at TeV scales, and to set model-independent constraints on new states with electroweak quantum numbers.
To this end, we present an implementation of $\sin^2\theta_W(\mu)$ in the Powheg-Box Monte Carlo event generator, which we use to explore the potential of future analyses with the LHC Run3 and High-Luminosity datasets. In particular, the impact of higher order electroweak corrections and of the uncertainties due the knowledge of parton distribution functions are studied.
Submitted on behalf of a Collaboration? | No |
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