Search for the production of an excited bottom quark decaying to tW in proton-proton collisions at s = 8 √s=8 TeV
Name
Khachatryan2016_Article_SearchForTheProductionOfAnExci.pdf
Description
Published version
Size
937.25 KB
Format
Adobe PDF
Checksum (MD5)
a7b824a993207db4c1520376198bcca1
Author(s)
The CMS Collaboration
Date Issued
2016
Journal
Journal of High Energy Physics
Publisher
Springer Science and Business Media LLC
Citation
Khachatryan, V., et al. "Search for the Production of an Excited Bottom Quark Decaying to Tw in Proton-Proton Collisions at Root S=8 Tev." Journal of High Energy Physics 1 (2016).
Version
Final published version
Abstract
© 2016, The Author(s). A search is presented for a singly produced excited bottom quark (b*) decaying to a top quark and a W boson in the all-hadronic, lepton+jets, and dilepton final states in proton-proton collisions at s=8(Formula Presented.)TeV recorded by the CMS experiment at the CERN LHC. Data corresponding to an integrated luminosity of 19.7 fb−1 are used. No significant excess of events is observed with respect to standard model expectations. We set limits at 95% confidence on the product of the b* quark production cross section and its branching fraction to tW. The cross section limits are interpreted for scenarios including left-handed, right-handed, and vector-like couplings of the b* quark and are presented in the two-dimensional coupling plane based on the production and decay coupling constants. The masses of the left-handed, right-handed, and vector-like b* quark states are excluded at 95% confidence below 1390, 1430, and 1530 GeV, respectively, for benchmark couplings. This analysis gives the most stringent limits on the mass of the b∗ quark to date.[Figure not available: see fulltext.]
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP01(2016)166
