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Title: First Search for Multijet Resonances in $$\sqrt{s} = 1.96$$ TeV $$ p\bar{p}$$ Collisions

Abstract

We present the first model independent search for three-jet hadronic resonances within multijet events in $$\sqrt{s} = 1.96$$ TeV $$ p\bar{p}$$ collisions at the Fermilab Tevatron using the CDF II detector. Pair production of supersymmetric gluinos and squarks with hadronic R-parity violating decays is employed as an example of a new physics benchmark for this signature. Selection criteria based on the kinetmatic properties of an ensemble of jet combinations within each event help to extract signal from copious QCD background. Our background estimates include all-hadronic t{anti t} decays that have a signature similar to the signal. No significant excess outside the top quark mass window is observed in data with an integrated luminosity of 3.2 fb{sup -1}. We place 95% confidence level limits on the production cross section {sigma}(p{anti p} {yields} X X') x BR ((tilde gg) {yields} 3 jet + 3 jet) where X, X' = {tilde g}, {tilde q}, or {tilde {anti q}}, with {tilde q}, {tilde {anti q}} {yields} {tilde g} + jet, as a function of gluino mass, in the range of 77 GeV/c{sup 2} to 240 GeV/c{sup 2}.

Authors:
 [1]
  1. et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
CDF Collaboration
OSTI Identifier:
1021043
Alternate Identifier(s):
OSTI ID: 1100369
Report Number(s):
FERMILAB-PUB-11-220-E-PPD
Journal ID: ISSN 0031-9007; arXiv eprint number arXiv:1105.2815; TRN: US201116%%690
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 4; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BENCHMARKS; COLLISIONS; CROSS SECTIONS; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; GEV RANGE; JET MODEL; LUMINOSITY; MASS; PAIR PRODUCTION; PROTON-ANTIPROTON INTERACTIONS; QUANTUM CHROMODYNAMICS; SPARTICLES; SUPERSYMMETRY; T QUARKS; TEV RANGE 01-10; Experiment-HEP

Citation Formats

Aaltonen, T. First Search for Multijet Resonances in $\sqrt{s} = 1.96$ TeV $ p\bar{p}$ Collisions. United States: N. p., 2011. Web. doi:10.1103/PhysRevLett.107.042001.
Aaltonen, T. First Search for Multijet Resonances in $\sqrt{s} = 1.96$ TeV $ p\bar{p}$ Collisions. United States. doi:10.1103/PhysRevLett.107.042001.
Aaltonen, T. Fri . "First Search for Multijet Resonances in $\sqrt{s} = 1.96$ TeV $ p\bar{p}$ Collisions". United States. doi:10.1103/PhysRevLett.107.042001. https://www.osti.gov/servlets/purl/1021043.
@article{osti_1021043,
title = {First Search for Multijet Resonances in $\sqrt{s} = 1.96$ TeV $ p\bar{p}$ Collisions},
author = {Aaltonen, T.},
abstractNote = {We present the first model independent search for three-jet hadronic resonances within multijet events in $\sqrt{s} = 1.96$ TeV $ p\bar{p}$ collisions at the Fermilab Tevatron using the CDF II detector. Pair production of supersymmetric gluinos and squarks with hadronic R-parity violating decays is employed as an example of a new physics benchmark for this signature. Selection criteria based on the kinetmatic properties of an ensemble of jet combinations within each event help to extract signal from copious QCD background. Our background estimates include all-hadronic t{anti t} decays that have a signature similar to the signal. No significant excess outside the top quark mass window is observed in data with an integrated luminosity of 3.2 fb{sup -1}. We place 95% confidence level limits on the production cross section {sigma}(p{anti p} {yields} X X') x BR ((tilde gg) {yields} 3 jet + 3 jet) where X, X' = {tilde g}, {tilde q}, or {tilde {anti q}}, with {tilde q}, {tilde {anti q}} {yields} {tilde g} + jet, as a function of gluino mass, in the range of 77 GeV/c{sup 2} to 240 GeV/c{sup 2}.},
doi = {10.1103/PhysRevLett.107.042001},
journal = {Physical Review Letters},
number = 4,
volume = 107,
place = {United States},
year = {2011},
month = {7}
}

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