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Title: Measurement of the ZZ Production Cross Section and Limits on Anomalous Neutral Triple Gauge Couplings in Proton-Proton Collisions at root s=7 TeV with the ATLAS Detector

Abstract

A measurement of the ZZ production cross section in proton-proton collisions at {radical}s = 7 TeV using data corresponding to an integrated luminosity of 1.02 fb{sup -1} recorded by the ATLAS experiment at the LHC is presented. Twelve events containing two Z boson candidates decaying to electrons and/or muons are observed, with an expected background of 0.3 {+-} 0.3(stat){sub -0.3}{sup +0.4}(syst) events. The cross section measured in a phase-space region with good detector acceptance and for dilepton masses within the range 66 to 116 GeV is {sigma}{sub ZZ {yields} {ell}{sup +}{ell}{sup -}{ell}{sup +}{ell}{sup -}}{sup fid} = 19.4{sub -5.2}{sup +6.3}(stat){sub -0.7}{sup +0.9}(syst) {+-} 0.7(lumi) fb. The resulting total cross section for on-shell ZZ production, {sigma}{sub ZZ}{sup tot} = 8.5{sub -2.3}{sup +2.7}(stat){sub -0.3}{sup +0.4}(syst) {+-} 0.3(lumi) pb, is consistent with the standard model expectation of 6.5{sub -0.2}{sup +0.3} pb calculated at the next-to-leading order in QCD. Limits on anomalous neutral triple gauge boson couplings are derived.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE SC OFFICE OF SCIENCE (SC)
OSTI Identifier:
1041169
Report Number(s):
BNL-97234-2012-JA
Journal ID: ISSN 0031-9007; PRLTAO; KA1101021; TRN: US1202620
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 4; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BOSONS; CROSS SECTIONS; ELECTRONS; LUMINOSITY; MUONS; PHASE SPACE; PRODUCTION; QUANTUM CHROMODYNAMICS; STANDARD MODEL; TOTAL CROSS SECTIONS

Citation Formats

Aad, G, Abbott, B, Abdallah, J, Abdelalim, A A, Abdesselam, A, Abdinov, O, Abi, B, Abolins, M, Abramowicz, H, Abreu, H, Acerbi, E, Acharya, B S, Adams, D L, Addy, T N, Adelman, J, Aderholz, M, Adomeit, S, Adragna, P, Adye, T, and Aefsky,. Measurement of the ZZ Production Cross Section and Limits on Anomalous Neutral Triple Gauge Couplings in Proton-Proton Collisions at root s=7 TeV with the ATLAS Detector. United States: N. p., 2012. Web. doi:10.1103/PhysRevLett.108.041804.
Aad, G, Abbott, B, Abdallah, J, Abdelalim, A A, Abdesselam, A, Abdinov, O, Abi, B, Abolins, M, Abramowicz, H, Abreu, H, Acerbi, E, Acharya, B S, Adams, D L, Addy, T N, Adelman, J, Aderholz, M, Adomeit, S, Adragna, P, Adye, T, & Aefsky,. Measurement of the ZZ Production Cross Section and Limits on Anomalous Neutral Triple Gauge Couplings in Proton-Proton Collisions at root s=7 TeV with the ATLAS Detector. United States. doi:10.1103/PhysRevLett.108.041804.
Aad, G, Abbott, B, Abdallah, J, Abdelalim, A A, Abdesselam, A, Abdinov, O, Abi, B, Abolins, M, Abramowicz, H, Abreu, H, Acerbi, E, Acharya, B S, Adams, D L, Addy, T N, Adelman, J, Aderholz, M, Adomeit, S, Adragna, P, Adye, T, and Aefsky,. Wed . "Measurement of the ZZ Production Cross Section and Limits on Anomalous Neutral Triple Gauge Couplings in Proton-Proton Collisions at root s=7 TeV with the ATLAS Detector". United States. doi:10.1103/PhysRevLett.108.041804.
@article{osti_1041169,
title = {Measurement of the ZZ Production Cross Section and Limits on Anomalous Neutral Triple Gauge Couplings in Proton-Proton Collisions at root s=7 TeV with the ATLAS Detector},
author = {Aad, G and Abbott, B and Abdallah, J and Abdelalim, A A and Abdesselam, A and Abdinov, O and Abi, B and Abolins, M and Abramowicz, H and Abreu, H and Acerbi, E and Acharya, B S and Adams, D L and Addy, T N and Adelman, J and Aderholz, M and Adomeit, S and Adragna, P and Adye, T and Aefsky,},
abstractNote = {A measurement of the ZZ production cross section in proton-proton collisions at {radical}s = 7 TeV using data corresponding to an integrated luminosity of 1.02 fb{sup -1} recorded by the ATLAS experiment at the LHC is presented. Twelve events containing two Z boson candidates decaying to electrons and/or muons are observed, with an expected background of 0.3 {+-} 0.3(stat){sub -0.3}{sup +0.4}(syst) events. The cross section measured in a phase-space region with good detector acceptance and for dilepton masses within the range 66 to 116 GeV is {sigma}{sub ZZ {yields} {ell}{sup +}{ell}{sup -}{ell}{sup +}{ell}{sup -}}{sup fid} = 19.4{sub -5.2}{sup +6.3}(stat){sub -0.7}{sup +0.9}(syst) {+-} 0.7(lumi) fb. The resulting total cross section for on-shell ZZ production, {sigma}{sub ZZ}{sup tot} = 8.5{sub -2.3}{sup +2.7}(stat){sub -0.3}{sup +0.4}(syst) {+-} 0.3(lumi) pb, is consistent with the standard model expectation of 6.5{sub -0.2}{sup +0.3} pb calculated at the next-to-leading order in QCD. Limits on anomalous neutral triple gauge boson couplings are derived.},
doi = {10.1103/PhysRevLett.108.041804},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 4,
volume = 108,
place = {United States},
year = {2012},
month = {1}
}

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