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 . DOI: 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.; Amidei, D.; Anastassov, A.; Annovi, A.; Antos, J.; Apollinari, G.; Appel, J. A.; Arisawa, T.; Artikov, A.; Asaadi, J.; Ashmanskas, W.; Auerbach, B.; Aurisano, A.; Azfar, F.; Badgett, W.; Bae, T.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Barria, P.; Bartos, P.; Bauce, M.; Bedeschi, F.; Behari, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, A.; Bhatti, A.; Bland, K. R.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bortoletto, D.; Boudreau, J.; Boveia, A.; Brigliadori, L.; Bromberg, C.; Brucken, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Bussey, P.; Butti, P.; Buzatu, A.; Devoto, F.; Mehtälä, P.; Orava, R.
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
Date: 2016-06-28
Language: eng
Number of pages: 29
Belongs to series: Physical Review D
ISSN: 2470-0010
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
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