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Title: Search for the associated production of chargino and neutralino in the final state with three leptons

Abstract

Supersymmetry, if realized in nature, predicts the existence of new particles, as chargino and neutralino, which might manifest themselves with peculiar signatures. Three leptons and large missing transverse energy in the event could signal their associated production. They report the latest results of the search performed by the CDF Collaboration in {radical}s = 1.96 TeV proton-antiproton collisions at Tevatron Run II.

Authors:
;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
879072
Report Number(s):
FERMILAB-CONF-05-595-E
arXiv eprint number hep-ex/0603032; TRN: US200711%%419
DOE Contract Number:
AC02-76CH03000
Resource Type:
Conference
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; LEPTONS; PRODUCTION; SUPERSYMMETRY; TRANSVERSE ENERGY; Experiment-HEP

Citation Formats

Canepa, Anadi, and /Purdue U. Search for the associated production of chargino and neutralino in the final state with three leptons. United States: N. p., 2006. Web.
Canepa, Anadi, & /Purdue U. Search for the associated production of chargino and neutralino in the final state with three leptons. United States.
Canepa, Anadi, and /Purdue U. Wed . "Search for the associated production of chargino and neutralino in the final state with three leptons". United States. doi:. https://www.osti.gov/servlets/purl/879072.
@article{osti_879072,
title = {Search for the associated production of chargino and neutralino in the final state with three leptons},
author = {Canepa, Anadi and /Purdue U.},
abstractNote = {Supersymmetry, if realized in nature, predicts the existence of new particles, as chargino and neutralino, which might manifest themselves with peculiar signatures. Three leptons and large missing transverse energy in the event could signal their associated production. They report the latest results of the search performed by the CDF Collaboration in {radical}s = 1.96 TeV proton-antiproton collisions at Tevatron Run II.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Feb 01 00:00:00 EST 2006},
month = {Wed Feb 01 00:00:00 EST 2006}
}

Conference:
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  • We present a search for chargino and neutralino supersymmetric particles yielding same signed dilepton final states including one hadronically decaying tau lepton using 6.0 fb{sup -1} of data collected by the the CDF II detector. This signature is important in SUSY models where, at high tan {beta}, the branching ratio of charginos and neutralinos to tau leptons becomes dominant. We study event acceptance, lepton identification cuts, and efficiencies. We set limits on the production cross section as a function of SUSY particle mass for certain generic models.
  • Preliminary results from a search for the production of an associated lightest chargino, W{sub 1}, and second lightest neutralino, Z{sub 2}, pair with the D0 detector at Fermilab`s pp collider with {radical}s = 1.8 TeV are presented. Based on approximately 85 pb{sup -1} of data collected during the 1993-1995 Tevatron Runs we set a 95% C.L. upper limit on the chargino-neutralino cross section times branching fraction to any trileptonic final state ranging from 0.91 pb to 0.19 pb for wino masses ranging from 45 GeV/c{sup 2} to 96 GeV/c{sup 2}.
  • The author presents a review of the searches for charginos and neutralinos using data from proton-antiproton collision at the center of mass energy of 1.96 TeV collected by the CDF and the D0 experiments at the Tevatron during run II.
  • The authors present a search for the associated production of charginos and neutralinos in p{bar p} collisions at {radical}s = 1.96 TeV. The data were collected at the Collider Detector at Fermilab (CDF II) and correspond to integrated luminosities between 0.7 and 1.0 fb{sup -1}. They look for final states with one high-p{sub T} electron or muon, and two additional leptons. The results are consistent with the standard model expectations, and they set limits on the cross section as a function of the chargino mass in three different supersymmetric scenarios. For a specific MSSM scenario with no slepton mixing theymore » set a 95% C.L. limit at 151 GeV/c{sup 2}.« less
  • We present a search for the associated production of charginos and neutralinos in pp collisions at {radical}(s)=1.96 TeV. The data were collected at the Collider Detector at Fermilab (CDF II) and correspond to integrated luminosities between 0.7 and 1.0 fb{sup -1}. We look for final states with one high-p{sub T} electron or muon, and two additional leptons. Our results are consistent with the standard model expectations, and we set limits on the cross section as a function of the chargino mass in three different supersymmetric scenarios. For a specific minimal supersymmetric standard model scenario with no slepton mixing, we setmore » a 95% C.L. limit at 151 GeV/c{sup 2}.« less