First LHC constraints on anomalously interacting new vector bosons

Details First LHC constraints on anomalously interacting new vector bosons First LHC constraints on anomalously interacting new vector bosons

2011-10-25

arxiv.org/abs/1110.5533v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures, 15th Lomonosov conference contribution

Scientific paper

It was recently proposed to extend the Standard Model by means of new spin-1 chiral $Z^*$ and $W^{*\pm}$ bosons with the internal quantum numbers of the electroweak Higgs doublets. These bosons have unique signatures in transverse momentum, angular and pseudorapidity distributions of the final leptons, which allow one to distinguish them from other heavy resonances. With 40 pb$^{-1}$ of the LHC proton-proton data at the energy 7 TeV, the ATLAS detector was used to search for narrow resonances in the invariant mass spectrum of $e^+e^-$ and $\mu^+\mu^-$ final states and high-mass charged states decaying to a charged lepton and a neutrino. From the search exclusion mass limits of 1.15 TeV$/c^2$ and 1.35 TeV$/c^2$ were obtained for the chiral neutral $Z^*$ and charged $W^*$ bosons, respectively. These are the first direct limits on the $W^*$ and $Z^*$ boson production.

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