Search for anomalous production in the highly-boosted all-hadronic final state (vol 09, 029, 2012)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10284757" target="_blank" >RIV/00216208:11320/14:10284757 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/JHEP03(2014)132" target="_blank" >http://dx.doi.org/10.1007/JHEP03(2014)132</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP03(2014)132" target="_blank" >10.1007/JHEP03(2014)132</a>
Alternative languages
Result language
angličtina
Original language name
Search for anomalous production in the highly-boosted all-hadronic final state (vol 09, 029, 2012)
Original language description
A search is presented for a massive particle, generically referred to as a Z0, decaying into a tt pair. The search focuses on Z0 resonances that are sufficiently massive to produce highly Lorentz-boosted top quarks, which yield collimated decay productsthat 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 a center-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 5 fb1. Upper limits in the range of 1 pb are set on the product of the production cross section and branching fraction for a topcolor Z0 modeled for several widths, as well as for a Randall- Sundrum Kaluza-Klein gluon. In addition, the results constrain any enhancement in tt production beyond expectations of the standard model for tt invariant mass larger than 1 TeV/c2.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Result continuities
Project
<a href="/en/project/LG13031" target="_blank" >LG13031: 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
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů