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Title: Search for new T' particles in final states with large jet multiplicities and missing transverse energy in pp collisions at √s=1.96 TeV

Abstract

We present a search for a new particle T decaying to a top quark via T = t + X, where X goes undetected. We use a data sample corresponding to 5.7 fb -1 of integrated luminosity of pp collisions with √s = 1.96 TeV, collected at Fermilab Tevatron by the CDF II detector. Our search for pair production of T' is focused on the hadronic decay channel, pp = TT= tt+XX=bqqbqq + XX. We interpret our results in terms of a model where T is an exotic fourth generation quark and X is a dark matter particle. The data are consistent with standard model expectations. We set a limit on the generic production of TT = tt =+ XX, excluding the fourth generation exotic quarks T at 95% confidence level up to m T = 400 GeV/c 2 for m X ≤ 70 GeV/c 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), Nuclear Physics (NP) (SC-26)
Contributing Org.:
CDF Collaboration
OSTI Identifier:
1020300
Alternate Identifier(s):
OSTI ID: 1101065
Report Number(s):
FERMILAB-PUB-11-326-E-PPD
Journal ID: ISSN 0031-9007; arXiv eprint number arXiv:1107.3574; TRN: US1103716
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 19; 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; DECAY; FERMILAB COLLIDER DETECTOR; FERMILAB TEVATRON; LUMINOSITY; NONLUMINOUS MATTER; PAIR PRODUCTION; PHYSICS; PRODUCTION; QUARKS; STANDARD MODEL; T QUARKS; Experiment-HEP; Phenomenology (hep-ph)

Citation Formats

Aaltonen, T. Search for new T' particles in final states with large jet multiplicities and missing transverse energy in pp collisions at √s=1.96 TeV. United States: N. p., 2011. Web. doi:10.1103/PhysRevLett.107.191803.
Aaltonen, T. Search for new T' particles in final states with large jet multiplicities and missing transverse energy in pp collisions at √s=1.96 TeV. United States. doi:10.1103/PhysRevLett.107.191803.
Aaltonen, T. Fri . "Search for new T' particles in final states with large jet multiplicities and missing transverse energy in pp collisions at √s=1.96 TeV". United States. doi:10.1103/PhysRevLett.107.191803. https://www.osti.gov/servlets/purl/1020300.
@article{osti_1020300,
title = {Search for new T' particles in final states with large jet multiplicities and missing transverse energy in pp collisions at √s=1.96 TeV},
author = {Aaltonen, T.},
abstractNote = {We present a search for a new particle T decaying to a top quark via T = t + X, where X goes undetected. We use a data sample corresponding to 5.7 fb-1 of integrated luminosity of pp collisions with √s = 1.96 TeV, collected at Fermilab Tevatron by the CDF II detector. Our search for pair production of T' is focused on the hadronic decay channel, pp = TT= tt+XX=bqqbqq + XX. We interpret our results in terms of a model where T is an exotic fourth generation quark and X is a dark matter particle. The data are consistent with standard model expectations. We set a limit on the generic production of TT = tt =+ XX, excluding the fourth generation exotic quarks T at 95% confidence level up to mT = 400 GeV/c2 for mX ≤ 70 GeV/c2.},
doi = {10.1103/PhysRevLett.107.191803},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 19,
volume = 107,
place = {United States},
year = {2011},
month = {11}
}

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Cited by: 19 works
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