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Title: Search for anomalous production of multi-lepton events in p anti-p collisions at s**(1/2) = 1.96-TeV

Abstract

The authors report a search for the anomalous production of events with multiple charged leptons in p{bar p} collisions at {radical}s = 1.96 TeV using a data sample corresponding to an integrated luminosity of 346 pb{sup -1} collected by the CDF II detector at the Fermilab Tevatron. The search is divided into three-lepton and four-or-more-lepton data samples. They observe six events in the three-lepton sample and zero events in the {ge}4-lepton sample. Both numbers of events are consistent with standard model background expectations. Within the framework of an R-parity violating supergravity model, the results are interpreted as mass limits on the lightest neutralino ({bar {chi}}{sub 1}{sup 0}) and chargino ({bar {chi}}{sub 1}{sup {+-}}) particles. For one particular choice of model parameters, the limits are M({bar {chi}}{sub 1}{sup 0}) > 110 GeV/c{sup 2} and M({bar {chi}}{sub 1}{sup {+-}}) > 203 GeV/c{sup 2} at 95% confidence level; the variation of these mass limits with model parameters is presented.

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
900832
Report Number(s):
FERMILAB-PUB-06-482-E
Journal ID: ISSN 0031-9007; PRLTAO; arXiv eprint number arXiv:0706.4448; TRN: US0702390
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
Phys.Rev.Lett.98:131804,2007
Additional Journal Information:
Journal Volume: 98; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; LEPTONS; LUMINOSITY; PRODUCTION; STANDARD MODEL; SUPERGRAVITY; Experiment-HEP

Citation Formats

Abulencia, A, Adelman, Jahred A, Affolder, T, Akimoto, T, Albrow, M G, Ambrose, D, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, Annovi, A, and /Taiwan, Inst.Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara. Search for anomalous production of multi-lepton events in p anti-p collisions at s**(1/2) = 1.96-TeV. United States: N. p., 2007. Web. doi:10.1103/PhysRevLett.98.131804.
Abulencia, A, Adelman, Jahred A, Affolder, T, Akimoto, T, Albrow, M G, Ambrose, D, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, Annovi, A, & /Taiwan, Inst.Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara. Search for anomalous production of multi-lepton events in p anti-p collisions at s**(1/2) = 1.96-TeV. United States. https://doi.org/10.1103/PhysRevLett.98.131804
Abulencia, A, Adelman, Jahred A, Affolder, T, Akimoto, T, Albrow, M G, Ambrose, D, Amerio, S, Amidei, D, Anastassov, A, Anikeev, K, Annovi, A, and /Taiwan, Inst.Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara. 2007. "Search for anomalous production of multi-lepton events in p anti-p collisions at s**(1/2) = 1.96-TeV". United States. https://doi.org/10.1103/PhysRevLett.98.131804. https://www.osti.gov/servlets/purl/900832.
@article{osti_900832,
title = {Search for anomalous production of multi-lepton events in p anti-p collisions at s**(1/2) = 1.96-TeV},
author = {Abulencia, A and Adelman, Jahred A and Affolder, T and Akimoto, T and Albrow, M G and Ambrose, D and Amerio, S and Amidei, D and Anastassov, A and Anikeev, K and Annovi, A and /Taiwan, Inst.Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara},
abstractNote = {The authors report a search for the anomalous production of events with multiple charged leptons in p{bar p} collisions at {radical}s = 1.96 TeV using a data sample corresponding to an integrated luminosity of 346 pb{sup -1} collected by the CDF II detector at the Fermilab Tevatron. The search is divided into three-lepton and four-or-more-lepton data samples. They observe six events in the three-lepton sample and zero events in the {ge}4-lepton sample. Both numbers of events are consistent with standard model background expectations. Within the framework of an R-parity violating supergravity model, the results are interpreted as mass limits on the lightest neutralino ({bar {chi}}{sub 1}{sup 0}) and chargino ({bar {chi}}{sub 1}{sup {+-}}) particles. For one particular choice of model parameters, the limits are M({bar {chi}}{sub 1}{sup 0}) > 110 GeV/c{sup 2} and M({bar {chi}}{sub 1}{sup {+-}}) > 203 GeV/c{sup 2} at 95% confidence level; the variation of these mass limits with model parameters is presented.},
doi = {10.1103/PhysRevLett.98.131804},
url = {https://www.osti.gov/biblio/900832}, journal = {Phys.Rev.Lett.98:131804,2007},
issn = {0031-9007},
number = ,
volume = 98,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}