title: Improving identification of dijet resonances at hadron colliders.
abstract: The experimental detection of resonances has played a vital role in the development of subatomic physics. The overwhelming multijet backgrounds at the Large Hadron Collider (LHC) necessitate the invention of new techniques to identify resonances decaying into a pair of partons. In this Letter we introduce an observable that achieves a significant improvement in several key measurements at the LHC: the Higgs boson decay to a pair of b quarks; W±/Z0 vector-boson hadronic decay; and extensions of the standard model (SM) with a new hadronic resonance. Measuring the Higgs decay to b quarks is a central test of the fermion mass generation mechanism in the SM, whereas the W±/Z0 production rates are important observables of the electroweak sector. Our technique is effective in large parts of phase space where the resonance is mildly boosted and is particularly well suited for experimental searches dominated by systematic uncertainties, which is true of many analyses in the high-luminosity running of the LHC.
authors: Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5 Canada.
authors: Eder
authors: E
authors: Izaguirre
authors: Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5 Canada and Department of Physics, McMaster University, Hamilton, Ontario, L8S 4L8 Canada.
authors: Brian
authors: B
authors: Shuve
authors: Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5 Canada and Department of Physics, McMaster University, Hamilton, Ontario, L8S 4L8 Canada.
authors: Itay
authors: I
authors: Yavin