Measurement of ZZ production in leptonic final states at {\surd}s of 1.96 TeV at CDF

TL;DR

This paper reports a precise measurement of the ZZ production cross section in proton-proton collisions at 1.96 TeV using CDF II data, combining multiple decay modes to improve accuracy.

Contribution

The paper provides the most precise measurement of the ZZ production cross section at 1.96 TeV to date, using a combined analysis of different decay channels.

Findings

Measured cross section: 1.64 pb with uncertainties.

Combined analysis of four-lepton and two-lepton-two-neutrino modes.

Most precise ZZ cross section measurement at this energy.

Abstract

In this paper we present a precise measurement of the total ZZ production cross section in pp collisions at {\surd}s= 1.96 TeV, using data collected with the CDF II detector corresponding to an integrated luminosity of approximately 6 fb-1. The result is obtained by combining separate measurements in the four-charged (lll'l'), and two-charged-lepton and two-neutral-lepton (llvv) decay modes of the Z. The combined measured cross section for pp {\to} ZZ is 1.64^(+0.44)_(-0.38) pb. This is the most precise measurement of the ZZ production cross section in 1.96 TeV pp collisions to date.