Search for anomalous t(t)over-bar production in the highly-boosted all-hadronic final state
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10129120" target="_blank" >RIV/00216208:11320/12:10129120 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/JHEP09(2012)029" target="_blank" >http://dx.doi.org/10.1007/JHEP09(2012)029</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP09(2012)029" target="_blank" >10.1007/JHEP09(2012)029</a>
Alternative languages
Result language
angličtina
Original language name
Search for anomalous t(t)over-bar production in the highly-boosted all-hadronic final state
Original language description
A search is presented for a massive particle, generically referred to as a Z', decaying into a t (t) over bar pair. The search focuses on Z' resonances that are sufficiently massive to produce highly Lorentz-boosted top quarks, which yield collimated decay products that are partially or fully merged into single jets. The analysis uses new methods to analyze jet substructure, providing suppression of the non-top multijet backgrounds. The analysis is based on a data sample of proton-proton collisions at acenter-of-mass energy of 7TeV, corresponding to an integrated luminosity of 5 fb(-1). Upper limits in the range of 1 pb are set on the product of the production cross section and branching fraction for a topcolor Z' modeled for several widths, as well as for a Randall-Sundrum Kaluza-Klein gluon. In addition, the result contrain any enhancement in t (t) over bar production beyond expectations of the standard mode for tt invariant mass larger than 1TeV/c(2).
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LA08015" target="_blank" >LA08015: Collaboration of the Czech Republic with CERN</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of High Energy Physics
ISSN
1126-6708
e-ISSN
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Volume of the periodical
2012
Issue of the periodical within the volume
9
Country of publishing house
IT - ITALY
Number of pages
40
Pages from-to
1-40
UT code for WoS article
000310341300042
EID of the result in the Scopus database
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