@Article{ATLASCollaborationAad_etal2012, author="ATLAS Collaboration (Aad, G. et al and Amoros, G. and Cabrera Urban, S. and Castillo Gimenez, V. and Costa, M. J. and Ferrer, A. and Fiorini, L. and Fuster, J. and Garcia, C. and Garcia Navarro, J. E. and Gonzalez de la Hoz, S. and Hernandez Jimenez, Y. and Higon-Rodriguez, E. and Irles Quiles, A. and Kaci, M. and Lacasta, C. and Lacuesta, V. R. and Marti-Garcia, S. and Mi{\~A}{\textpm}ano, M. and Mitsou, V. A. and Moles-Valls, R. and Moreno Llacer, M. and Oliver Garcia, E. and Perez Garcia-Esta{\~A}{\textpm}, M. T. and Romero Adam, E. and Ros, E. and Salt, J. and Sanchez Martinez, V. and Solans, C. A. and Soldevila, U. and Sanchez, J. and Torro Pastor, E. and Valladolid Gallego, E. and Valls Ferrer, J. A. and Villaplana Perez, M. and Vos, M. and Wildauer, A.", title="Search for Pair Production of a New b {\textquoteright} Quark that Decays into a Z Boson and a Bottom Quark with the ATLAS Detector", journal="Physical Review Letters", year="2012", publisher="Amer Physical Soc", volume="109", number="7", pages="071801--19pp", abstract="A search is reported for the pair production of a new quark b{\textquoteright} with at least one b{\textquoteright} decaying to a Z boson and a bottom quark. The data, corresponding to 2.0 fb(-1) of integrated luminosity, were collected from pp collisions at root s = 7 TeV with the ATLAS detector at the CERN Large Hadron Collider. Using events with a b-tagged jet and a Z boson reconstructed from opposite-charge electrons, the mass distribution of large transverse momentum b{\textquoteright} candidates is tested for an enhancement. No evidence for a b{\textquoteright} signal is detected in the observed mass distribution, resulting in the exclusion at a 95{\%} confidence level of b{\textquoteright} quarks with masses m(b){\textquoteright} < 400 GeV that decay entirely via b{\textquoteright} -> Z + b. In the case of a vectorlike singlet b{\textquoteright} mixing solely with the third standard model generation, masses m(b){\textquoteright} < 358 GeV are excluded.", optnote="WOS:000307709400006", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1136), last updated on Thu, 27 Sep 2012 11:27:27 +0000", issn="0031-9007", doi="10.1103/PhysRevLett.109.071801", opturl="http://arxiv.org/abs/1204.1265", opturl="https://doi.org/10.1103/PhysRevLett.109.071801", archivePrefix="arXiv", eprint="1204.1265", language="English" }