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Title: Search for ZZ and Z\gamma^* production in p-barp collisions at sqrt(s) = 1.96 TeV and limits on anomalous ZZZ and ZZ\gamma^* couplings

Abstract

The authors present a study of {mu}{mu}{mu}{mu}, eeee, and {mu}{mu}ee events using 1 fb{sup -1} of data collected with the D0 detector at the Fermilab Tevatron p{bar p} Collider at {radical}s = 1.96 TeV. Requiring the lepton pair masses to be greater than 30 GeV, they observe one event, consistent with the expected background of 0.13 {+-} 0.03 events and with the predicted standard model ZZ and Z{gamma}* production of 1.71 {+-} 0.15 events. They set an upper limit on the ZZ and Z{gamma}* cross section of 4.4 pb at the 95% C.L. They also derive limits on anomalous neutral trilinear ZZZ and ZZ{gamma}* gauge couplings. The one-parameter 95% C.L. coupling limits with a form factor scale {Lambda} = 1.2 TeV are -0.28 < f{sub 40}{sup Z} < 0.28, -0.31 < f{sub 50}{sup Z} < 0.29, -0.26 < f{sub 40}{sup y} < 0.26, and -0.30 < f{sub 50}{sup y} < 0.28.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
921112
Report Number(s):
FERMILAB-PUB-07-641-E
arXiv eprint number arXiv:0712.0599; TRN: US0801936
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CROSS SECTIONS; FERMILAB TEVATRON; FORM FACTORS; LEPTONS; PRODUCTION; STANDARD MODEL; Experiment-HEP

Citation Formats

Collaboration, D0, and Abazov, V. Search for ZZ and Z\gamma^* production in p-barp collisions at sqrt(s) = 1.96 TeV and limits on anomalous ZZZ and ZZ\gamma^* couplings. United States: N. p., 2007. Web.
Collaboration, D0, & Abazov, V. Search for ZZ and Z\gamma^* production in p-barp collisions at sqrt(s) = 1.96 TeV and limits on anomalous ZZZ and ZZ\gamma^* couplings. United States.
Collaboration, D0, and Abazov, V. Sat . "Search for ZZ and Z\gamma^* production in p-barp collisions at sqrt(s) = 1.96 TeV and limits on anomalous ZZZ and ZZ\gamma^* couplings". United States. https://www.osti.gov/servlets/purl/921112.
@article{osti_921112,
title = {Search for ZZ and Z\gamma^* production in p-barp collisions at sqrt(s) = 1.96 TeV and limits on anomalous ZZZ and ZZ\gamma^* couplings},
author = {Collaboration, D0 and Abazov, V},
abstractNote = {The authors present a study of {mu}{mu}{mu}{mu}, eeee, and {mu}{mu}ee events using 1 fb{sup -1} of data collected with the D0 detector at the Fermilab Tevatron p{bar p} Collider at {radical}s = 1.96 TeV. Requiring the lepton pair masses to be greater than 30 GeV, they observe one event, consistent with the expected background of 0.13 {+-} 0.03 events and with the predicted standard model ZZ and Z{gamma}* production of 1.71 {+-} 0.15 events. They set an upper limit on the ZZ and Z{gamma}* cross section of 4.4 pb at the 95% C.L. They also derive limits on anomalous neutral trilinear ZZZ and ZZ{gamma}* gauge couplings. The one-parameter 95% C.L. coupling limits with a form factor scale {Lambda} = 1.2 TeV are -0.28 < f{sub 40}{sup Z} < 0.28, -0.31 < f{sub 50}{sup Z} < 0.29, -0.26 < f{sub 40}{sup y} < 0.26, and -0.30 < f{sub 50}{sup y} < 0.28.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {12}
}