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Title: Search for resonant production of tt decaying to jets in pp collisions at √{s}=1.96 TeV

This Letter reports a search for non-standard model topquark resonances, Z', decaying to ttMs; →W +bW -b , where both W decay to quarks. We examine the top-antitop quark invariant mass spectrum for the presence of narrow resonant states. The search uses a data sample of p{bar p} collisions at a center of mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, with an integrated luminosity of 2.8 fb -1. No evidence for top-antitop quark resonant production is found. We place upper limits on the production cross section times branching ratio for a specific topcolor assisted technicolor model with width of λ Z' = 0.012 M Z'. Within this model, we exclude Z' boson with masses below 805 GeV/c 2 at the 95% confidence level.
Authors:
 [1]
  1. et al.
Publication Date:
Report Number(s):
FERMILAB-PUB-11-397-E
Journal ID: ISSN 1550-7998; arXiv eprint number arXiv:1108.4755; TRN: US1105243
Grant/Contract Number:
AC02-07CH11359
Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 84; Journal Issue: 7; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Contributing Orgs:
CDF Collaboration
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; A CENTERS; BOSONS; BRANCHING RATIO; CROSS SECTIONS; DECAY; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; LUMINOSITY; PRODUCTION; QUARKS; Experiment-HEP
OSTI Identifier:
1027477
Alternate Identifier(s):
OSTI ID: 1100927

Aaltonen, T. Search for resonant production of tt decaying to jets in pp collisions at √{s}=1.96 TeV. United States: N. p., Web. doi:10.1103/PhysRevD.84.072003.
Aaltonen, T. Search for resonant production of tt decaying to jets in pp collisions at √{s}=1.96 TeV. United States. doi:10.1103/PhysRevD.84.072003.
Aaltonen, T. 2011. "Search for resonant production of tt decaying to jets in pp collisions at √{s}=1.96 TeV". United States. doi:10.1103/PhysRevD.84.072003. https://www.osti.gov/servlets/purl/1027477.
@article{osti_1027477,
title = {Search for resonant production of tt decaying to jets in pp collisions at √{s}=1.96 TeV},
author = {Aaltonen, T.},
abstractNote = {This Letter reports a search for non-standard model topquark resonances, Z', decaying to ttMs; →W+bW-b , where both W decay to quarks. We examine the top-antitop quark invariant mass spectrum for the presence of narrow resonant states. The search uses a data sample of p{bar p} collisions at a center of mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, with an integrated luminosity of 2.8 fb-1. No evidence for top-antitop quark resonant production is found. We place upper limits on the production cross section times branching ratio for a specific topcolor assisted technicolor model with width of λZ' = 0.012 MZ'. Within this model, we exclude Z' boson with masses below 805 GeV/c2 at the 95% confidence level.},
doi = {10.1103/PhysRevD.84.072003},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 7,
volume = 84,
place = {United States},
year = {2011},
month = {10}
}