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Signatures of virtual LSPs at the TEVATRON

Technical Report:

Abstract

Relatively light sneutrinos which are experimentally allowed and are not theoretically disfavored may significantly affect the currently popular search strategies for supersymmetric particles by decaying dominantly into an invisible channel. In certain cases the second lightest neutralino may also decay invisibly leading to two extra carriers of missing energy (in addition to the lightest supersymmetric particle (LSP)) - the virtual LSPs (VLSPs). The lighter charginos which would be produced in pairs with reasonably large cross-sections at TEVATRON energies, decay dominantly into the hadronically quiet lepton + sneutrino (E{sub T}) modes with large branching ratios leading to interesting unlike sign dilepton events which are not swamped by the standard model background. The kinematical cuts required to eliminate the backgrounds from WW, Drell-Yan and {tau} pair production are discussed in detail. With 100 pb{sup -1} luminosity 10-35 background free events can be found in a large region of the SUSY parameter space. (author). 14 refs, 3 figs, 2 tabs.
Authors:
Datta, A; [1]  Chakravarti, S; [2]  Guchait, M [3] 
  1. International Centre for Theoretical Physics, Trieste (Italy)
  2. Maharaja Manindra Chandra College, Calcutta (India)
  3. Jadavpur Univ., Calcutta (India). Dept. of Physics
Publication Date:
Oct 01, 1994
Product Type:
Technical Report
Report Number:
IC-94/303; HEPPH-9410331.
Reference Number:
SCA: 662440; PA: AIX-26:012902; EDB-95:032442; SN: 95001325069
Resource Relation:
Other Information: PBD: Oct 1994
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; SPARTICLES; PARTICLE DECAY; VIRTUAL PARTICLES; BRANCHING RATIO; DRELL MODEL; LEPTONS; PARTICLE PRODUCTION; 662440; PROPERTIES OF OTHER PARTICLES INCLUDING HYPOTHETICAL PARTICLES
OSTI ID:
10113053
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ON: DE95613798; TRN: XA9438451012902
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
9 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Datta, A, Chakravarti, S, and Guchait, M. Signatures of virtual LSPs at the TEVATRON. IAEA: N. p., 1994. Web.
Datta, A, Chakravarti, S, & Guchait, M. Signatures of virtual LSPs at the TEVATRON. IAEA.
Datta, A, Chakravarti, S, and Guchait, M. 1994. "Signatures of virtual LSPs at the TEVATRON." IAEA.
@misc{etde_10113053,
title = {Signatures of virtual LSPs at the TEVATRON}
author = {Datta, A, Chakravarti, S, and Guchait, M}
abstractNote = {Relatively light sneutrinos which are experimentally allowed and are not theoretically disfavored may significantly affect the currently popular search strategies for supersymmetric particles by decaying dominantly into an invisible channel. In certain cases the second lightest neutralino may also decay invisibly leading to two extra carriers of missing energy (in addition to the lightest supersymmetric particle (LSP)) - the virtual LSPs (VLSPs). The lighter charginos which would be produced in pairs with reasonably large cross-sections at TEVATRON energies, decay dominantly into the hadronically quiet lepton + sneutrino (E{sub T}) modes with large branching ratios leading to interesting unlike sign dilepton events which are not swamped by the standard model background. The kinematical cuts required to eliminate the backgrounds from WW, Drell-Yan and {tau} pair production are discussed in detail. With 100 pb{sup -1} luminosity 10-35 background free events can be found in a large region of the SUSY parameter space. (author). 14 refs, 3 figs, 2 tabs.}
place = {IAEA}
year = {1994}
month = {Oct}
}