Search for pair production of a new b' quark that decays to a Z boson and a bottom quark with the ATLAS detector at the LHC

Details Search for pair production of a new b' quark that decays to a Z boson and a bottom quark with the ATLAS detector at the LHC Search for pair production of a new b' quark that decays to a Z boson and a bottom quark with the ATLAS detector at the LHC

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aps..apr.q9001b&link_type=abstract

American Physical Society, APS April Meeting 2012, March 31-Apr 3, 2012, abstract #Q9.001

Physics

Scientific paper

We report a search for a new down-type quark, denoted b', that is pair produced in pp collisions at √s = 7 TeV with at least one b' decaying to a Z boson and a bottom quark. This search complements recent searches for a b' in the W boson plus top quark mode, and is particularly relevant for vector-like quark models. The data comprise 2.0 fb-1 of integrated luminosity collected by the ATLAS detector at the LHC in 2011. From events containing both a Z boson reconstructed from electrons, and a b-tagged jet, we enrich any potential signal by selecting a subsample with large b' candidate pT. We present limits on the mass of the b'.

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