Combined search for the quarks of a sequential fourth generation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10129142" target="_blank" >RIV/00216208:11320/12:10129142 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevD.86.112003" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.86.112003</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.86.112003" target="_blank" >10.1103/PhysRevD.86.112003</a>
Alternative languages
Result language
angličtina
Original language name
Combined search for the quarks of a sequential fourth generation
Original language description
Results are presented from a search for a fourth generation of quarks produced singly or in pairs in a data set corresponding to an integrated luminosity of 5 fb(-1) recorded by the CMS experiment at the LHC in 2011. A novel strategy has been developed for a combined search for quarks of the up and down type in decay channels with at least one isolated muon or electron. Limits on the mass of the fourth-generation quarks and the relevant Cabibbo-Kobayashi-Maskawa matrix elements are derived in the context of a simple extension of the standard model with a sequential fourth generation of fermions. The existence of mass-degenerate fourth-generation quarks with masses below 685 GeV is excluded at 95% confidence level for minimal off-diagonal mixing betweenthe third- and the fourth-generation quarks. With a mass difference of 25 GeV between the quark masses, the obtained limit on the masses of the fourth-generation quarks shifts by about +/- 20 GeV. These results significantly reduce the a
Czech name
—
Czech description
—
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
—
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
Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998
e-ISSN
—
Volume of the periodical
86
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
20
Pages from-to
1120031-20
UT code for WoS article
000312294500001
EID of the result in the Scopus database
—