2012/07/31 by V. M. Abazov, D0 Collaboration, B. Abbott +98
Physics and Astronomy · #Boson #Branching fraction #Collider #Collider Detector at Fermilab #Fermilab #Higgs boson #High-Energy Particle Collisions Research #Jet (fluid) #Large Hadron Collider #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quark #Standard Model (mathematical formulation) #Tevatron #Top quark #hep-ex
paper · pdf · doi:10.1103/physrevlett.109.121803
Published in Phys. Rev. Lett
openalex publication_date 2012/09/20 · arxiv created 2012/09/25 · arxiv updated 2015/06/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present a search for the standard model (SM) Higgs boson produced in association with a Z boson in 9.7 fb^\ensuremath-1 of pp collisions collected with the D0 detector at the Fermilab Tevatron Collider at √(s)=1.96 TeV. Selected events contain one reconstructed Z\ensuremath→e+e^\ensuremath- or Z\ensuremath→\ensuremathμ+\ensuremathμ^\ensuremath- candidate and at least two jets, including at least one jet identified as likely to contain a b quark. To validate the search procedure, we also measure the cross section for ZZ production in the same final state. It is found to be consistent with its SM prediction. We set upper limits on the ZH production cross section times branching ratio for H\ensuremath→bb at the 95% C.L. for Higgs boson masses 90\ensuremath≤MH\ensuremath≤150 GeV. The observed (expected) limit for MH=125 GeV is 7.1 (5.1) times the SM cross section.