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Title: Unravelling the sbottom spin at the CERN LHC

Abstract

Establishing that a signal of new physics is undoubtedly supersymmetric requires not only the discovery of the supersymmetric partners but also probing their spins and couplings. We show that the sbottom spin can be probed at the CERN Large Hadron Collider using only angular correlations in the reaction pp{yields}b-tildeb-tilde*{yields}bbpe{sub T}, which allow us to distinguish a universal extra dimensional interpretation with a fermionic heavy bottom quark from supersymmetry with a bosonic bottom squark. We demonstrate that this channel provides a clear indication of the sbottom spin provided the sbottom production rate and branching ratio into b{chi}-tilde{sub 1}{sup 0} are sufficiently large to have a clear signal above standard model backgrounds.

Authors:
;  [1]
  1. Instituto de Fisica, Universidade de Sao Paulo, Sao Paulo (Brazil)
Publication Date:
OSTI Identifier:
20929575
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevD.75.115013; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ANGULAR CORRELATION; B QUARKS; BRANCHING RATIO; CERN LHC; INCLUSIVE INTERACTIONS; PARTICLE PRODUCTION; PROTON-PROTON INTERACTIONS; SIGNALS; SPARTICLES; SPIN; STANDARD MODEL; SUPERSYMMETRY

Citation Formats

Alves, Alexandre, and Eboli, Oscar. Unravelling the sbottom spin at the CERN LHC. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.115013.
Alves, Alexandre, & Eboli, Oscar. Unravelling the sbottom spin at the CERN LHC. United States. doi:10.1103/PHYSREVD.75.115013.
Alves, Alexandre, and Eboli, Oscar. Fri . "Unravelling the sbottom spin at the CERN LHC". United States. doi:10.1103/PHYSREVD.75.115013.
@article{osti_20929575,
title = {Unravelling the sbottom spin at the CERN LHC},
author = {Alves, Alexandre and Eboli, Oscar},
abstractNote = {Establishing that a signal of new physics is undoubtedly supersymmetric requires not only the discovery of the supersymmetric partners but also probing their spins and couplings. We show that the sbottom spin can be probed at the CERN Large Hadron Collider using only angular correlations in the reaction pp{yields}b-tildeb-tilde*{yields}bbpe{sub T}, which allow us to distinguish a universal extra dimensional interpretation with a fermionic heavy bottom quark from supersymmetry with a bosonic bottom squark. We demonstrate that this channel provides a clear indication of the sbottom spin provided the sbottom production rate and branching ratio into b{chi}-tilde{sub 1}{sup 0} are sufficiently large to have a clear signal above standard model backgrounds.},
doi = {10.1103/PHYSREVD.75.115013},
journal = {Physical Review. D, Particles Fields},
number = 11,
volume = 75,
place = {United States},
year = {Fri Jun 01 00:00:00 EDT 2007},
month = {Fri Jun 01 00:00:00 EDT 2007}
}
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