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Title: Search for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings with D0

Abstract

A direct test of the Standard Model by searching for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings is presented. The authors analyze p{bar p} {yields} ll{gamma} + X, (l = e,{mu}) events at {radical}s = 1.8 TeV with the D0d detector at the Fermilab Tevatron Collider. A fit to the transverse energy spectrum of the photon in the signal events, based on the data set corresponding to an integrated luminosity of 13.9 pb{sup {minus}1} (13.3 pb{sup {minus}1}) for the electron (muon) channel, yields the following 95% CL limits on the anomalous CP-conserving ZZ{gamma} couplings: -1.9 < h{sub 30}{sup Z} < 1.8 (h{sub 40}{sup Z} = 0), and -0.5 < h{sub 40}{sup Z} < 0.5 ({sub 30}{sup Z} = 0), for a form-factor scale {Lambda} = 500 GeV. Limits on the Z{gamma}{gamma} couplings and CP-violating couplings are also discussed.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab., Batavia, IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
50915
Report Number(s):
FNAL/C-95/061-E; CONF-950287-1
ON: DE95010457; TRN: 95:011898
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Conference
Resource Relation:
Conference: International symposium on vector boson interactions, Los Angeles, CA (United States), 1-3 Feb 1995; Other Information: PBD: [1995]
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; PROTON-ANTIPROTON INTERACTIONS; RADIATIVE DECAY; GAMMA RADIATION; COUPLING CONSTANTS; Z NEUTRAL BOSONS; FERMILAB TEVATRON; CP INVARIANCE; ELECTRONS; MUONS

Citation Formats

Landsberg, G. Search for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings with D0. United States: N. p., 1995. Web.
Landsberg, G. Search for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings with D0. United States.
Landsberg, G. Mon . "Search for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings with D0". United States. https://www.osti.gov/servlets/purl/50915.
@article{osti_50915,
title = {Search for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings with D0},
author = {Landsberg, G},
abstractNote = {A direct test of the Standard Model by searching for anomalous ZZ{gamma} and Z{gamma}{gamma} couplings is presented. The authors analyze p{bar p} {yields} ll{gamma} + X, (l = e,{mu}) events at {radical}s = 1.8 TeV with the D0d detector at the Fermilab Tevatron Collider. A fit to the transverse energy spectrum of the photon in the signal events, based on the data set corresponding to an integrated luminosity of 13.9 pb{sup {minus}1} (13.3 pb{sup {minus}1}) for the electron (muon) channel, yields the following 95% CL limits on the anomalous CP-conserving ZZ{gamma} couplings: -1.9 < h{sub 30}{sup Z} < 1.8 (h{sub 40}{sup Z} = 0), and -0.5 < h{sub 40}{sup Z} < 0.5 ({sub 30}{sup Z} = 0), for a form-factor scale {Lambda} = 500 GeV. Limits on the Z{gamma}{gamma} couplings and CP-violating couplings are also discussed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {5}
}

Conference:
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