Measurement of sin(2) theta(lept)(eff) using e(+)e(-) pairs from gamma*/Z bosons produced in p(p)over-bar collisions at a center- of- momentum energy of 1.96 TeV

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Aaltonen , T , Amerio , S , Brucken , E , Devoto , F , Mehtälä , P , Orava , R & CDF Collaboration 2016 , ' Measurement of sin(2) theta(lept)(eff) using e(+)e(-) pairs from gamma*/Z bosons produced in p(p)over-bar collisions at a center- of- momentum energy of 1.96 TeV ' , Physical Review D , vol. 93 , no. 11 , 112016 . https://doi.org/10.1103/PhysRevD.93.112016

Title: Measurement of sin(2) theta(lept)(eff) using e(+)e(-) pairs from gamma*/Z bosons produced in p(p)over-bar collisions at a center- of- momentum energy of 1.96 TeV
Author: Aaltonen, T.; Amerio, S.; Brucken, E.; Devoto, F.; Mehtälä, P.; Orava, R.; CDF Collaboration
Contributor organization: Department of Physics
Helsinki Institute of Physics
Date: 2016-06-28
Language: eng
Number of pages: 29
Belongs to series: Physical Review D
ISSN: 2470-0010
DOI: https://doi.org/10.1103/PhysRevD.93.112016
URI: http://hdl.handle.net/10138/184727
Abstract: At the Fermilab Tevatron proton-antiproton (p (p) over bar) collider, Drell-Yan lepton pairs are produced in the process p (p) over bar -> e(+)e(-) + X through an intermediate gamma*/Z boson. The forward-backward asymmetry in the polar-angle distribution of the e(-) as a function of the e(+)e(-)-pair mass is used to obtain sin(2) theta(lept)(eff), the effective leptonic determination of the electroweak-mixing parameter sin(2) theta(W). The measurement sample, recorded by the Collider Detector at Fermilab (CDF), corresponds to 9.4 fb(-1) of integrated luminosity from p (p) over bar collisions at a center-of-momentum energy of 1.96 TeV, and is the full CDF Run II data set. The value of sin(2) theta(lept)(eff) is found to be 0.23248 +/- 0.00053. The combination with the previous CDF measurement based on mu(+)mu(-) pairs yields sin(2) theta(lept)(eff) = 0.23221 +/- 0.00046. This result, when interpreted within the specified context of the standard model assuming sin(2) theta(W) = 1 - M-W(2)/M-Z(2) and that the W- and Z-boson masses are on-shell, yields sin(2) theta(W) = 0.22400 +/- 0.00045, or equivalently a W-boson mass of 80.328 +/- 0.024 GeV/c(2).
Subject: QED RADIATIVE-CORRECTIONS
UNIVERSAL MONTE-CARLO
TO-BACK JETS
PARTON DISTRIBUTIONS
ELECTROMAGNETIC CALORIMETER
ELECTROWEAK MEASUREMENTS
SEMIANALYTICAL PROGRAM
HADRONIC COLLISIONS
TRANSVERSE-MOMENTUM
W-BOSON
114 Physical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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