# EPS HEP 2015

22-29 July 2015
Europe/Vienna timezone

## Measurements of $Z$ production distribution and decay asymmetry

Jul 23, 2015, 10:19 AM
18m
HS31

### HS31

talk Top and Electroweak Physics

### Speaker

Aran Garcia-Bellido (University of Rochester)

### Description

We present measurements of the $Z\gamma$* rapidity and $\phi$* production distributions and the weak mixing angle from $Z$ boson decays, with all RunII data collected by the D0 detector at the Fermilab Tevatron Collider. The measurement of $\phi*$ probes the same physical effects as the $Z/\gamma$* boson transverse momentum, but is less susceptible to the effects of experimental resolution and efficiency. Both $\phi$* and rapidity are measured with unprecedented precision. The effective weak mixing angle is extracted from the forward-backward charge asymmetry distribution as a function of dielectron invariant mass around the $Z$ pole. The measured value of the weak mixing angle is the most precise from light quark interactions, and comparable to the best LEP and SLD results.

### Primary authors

Bob.Hirosky DZERO.PHYSICS.COORDINATOR (DZero Experiment, Fermilab) Boris.Tuchming DZERO.PHYSICS.COORDINATOR (DZero Experiment, Fermilab)