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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
Resource Relation:
Journal Name: Phys.Rev.Lett.98:131804,2007; Journal Volume: 98
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. 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., and /Taiwan, Inst. Phys. /Argonne /Barcelona, IFAE /Baylor U. /INFN, Bologna /Bologna U. /Brandeis U. /UC, Davis /UCLA /UC, San Diego /UC, Santa Barbara. Mon . "Search for anomalous production of multi-lepton events in p anti-p collisions at s**(1/2) = 1.96-TeV". United States. doi: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},
journal = {Phys.Rev.Lett.98:131804,2007},
number = ,
volume = 98,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}