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 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)

Presentation materials