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Search for R-parity violating supersymmetry in multilepton final states with the DOe detector

Abstract

Results obtained from a search for the trilepton signature {mu}{mu}L (with l=e, or {mu}) are combined with two complementary searches for the trilepton signatures eel and ee{tau} and interpreted in the framework of R-parity violating Supersymmetry. Pairwise, R-parity conserving production of the supersymmetric particles is assumed, followed by R-parity violating decays via an LL anti E-operator with one dominant coupling {lambda}{sub 122}. An LL anti E-operator couples two weak isospin doublet and one singlet (s)lepton fields and thus violates lepton number conservation. The data, corresponding to an integrated luminosity of {integral} L=360{+-}23 pb{sup -1}, was collected with the DOe detector at the Fermilab Tevatron Collider between April 2002 and August 2004. No event is observed in the data, while 0.41 {+-} 0.11 (stat) {+-} 0.07(sys) events are expected from Standard Model processes. The 95 % confidence level cross section upper limits are in the range of 0.020 to 0.136 pb. From these, lower bounds on the masses of the lightest neutralino ({chi}{sub 1}{sup 0}) and chargino ({chi}{sup {+-}}{sub 1}) are extracted and interpreted in tow different SUSY models. (orig.)
Authors:
Publication Date:
Oct 27, 2006
Product Type:
Thesis/Dissertation
Report Number:
INIS-DE-0219
Resource Relation:
Other Information: TH: Diss. (Dr.rer.nat.)
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; SUPERSYMMETRY; SPARTICLES; LEPTONIC DECAY; ELECTRONS; LEPTON NUMBER; STANDARD MODEL; INTEGRAL CROSS SECTIONS; REST MASS; POSITRONS; MUONS PLUS; MUONS MINUS; SYMMETRY BREAKING; PAIR PRODUCTION; EXPERIMENTAL DATA; PROTON-ANTIPROTON INTERACTIONS; TEV RANGE 01-10; SUPERGRAVITY; TAU PARTICLES
OSTI ID:
20865448
Research Organizations:
Rheinisch-Westfaelische Technische Hochschule Aachen (Germany). Fakultaet fuer Mathematik, Informatik und Naturwissenschaften
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
TRN: DE07F4725
Availability:
Commercial reproduction prohibited; INIS; OSTI as DE20865448
Submitting Site:
DEN
Size:
266 pages
Announcement Date:
May 14, 2007

Citation Formats

Kaefer, D. Search for R-parity violating supersymmetry in multilepton final states with the DOe detector. Germany: N. p., 2006. Web.
Kaefer, D. Search for R-parity violating supersymmetry in multilepton final states with the DOe detector. Germany.
Kaefer, D. 2006. "Search for R-parity violating supersymmetry in multilepton final states with the DOe detector." Germany.
@misc{etde_20865448,
title = {Search for R-parity violating supersymmetry in multilepton final states with the DOe detector}
author = {Kaefer, D}
abstractNote = {Results obtained from a search for the trilepton signature {mu}{mu}L (with l=e, or {mu}) are combined with two complementary searches for the trilepton signatures eel and ee{tau} and interpreted in the framework of R-parity violating Supersymmetry. Pairwise, R-parity conserving production of the supersymmetric particles is assumed, followed by R-parity violating decays via an LL anti E-operator with one dominant coupling {lambda}{sub 122}. An LL anti E-operator couples two weak isospin doublet and one singlet (s)lepton fields and thus violates lepton number conservation. The data, corresponding to an integrated luminosity of {integral} L=360{+-}23 pb{sup -1}, was collected with the DOe detector at the Fermilab Tevatron Collider between April 2002 and August 2004. No event is observed in the data, while 0.41 {+-} 0.11 (stat) {+-} 0.07(sys) events are expected from Standard Model processes. The 95 % confidence level cross section upper limits are in the range of 0.020 to 0.136 pb. From these, lower bounds on the masses of the lightest neutralino ({chi}{sub 1}{sup 0}) and chargino ({chi}{sup {+-}}{sub 1}) are extracted and interpreted in tow different SUSY models. (orig.)}
place = {Germany}
year = {2006}
month = {Oct}
}