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Brad Abbott

Publications and source records attributed to Brad Abbott.

3 recordsLinked to original sources

Anomalous production of massive gauge boson pairs at muon colliders

The prospects of searches for anomalous production of hadronically decaying weak boson pairs at proposed high-energy muon colliders are reported. Muon-muon collision events are simulated at $\sqrt{s}=6$, 10, and 30 TeV, corresponding to an integrated luminosity of $4$, $10$, and $10$ ab$^{-1}$, respectively. Simulated $μμ\rightarrow\mathrm{W}\mathrm{W}+νν/μμ$ events are used to set expected constraints on the structure of quartic vector boson interactions in the framework of a dimension-8 effective field theory. Similarly, $μμ\rightarrow\mathrm{W}\mathrm{W}/\mathrm{Z}\mathrm{Z}+νν$ events are used to report constraints on the product of the cross section and branching fraction for vector boson fusion production of a heavy neutral Higgs boson decaying to weak boson pairs. These results are interpreted in the context of the Georgi-Machacek model.

hep-ex

CP Violation with Bs -> J/Psi phi at the Tevatron

Recent results using B_s -> J/Psi phi decays for measuring the CP violating phase, phi_s, and the decay width difference for the two mass eigenstates, Delta Gamma_s, are presented from the CDF and D0 experiments at the Fermilab Tevatron collider.

hep-ex

Measurement of Dijet Angular Distributions and Search for Quark Compositeness

We have measured the dijet angular distribution in $\sqrt{s}$=1.8 TeV $p\bar{p}$ collisions using the D0 detector. Order $α^{3}_{s}$ QCD predictions are in good agreement with the data. At 95% confidence the data exclude models of quark compositeness in which the contact interaction scale is below 2 TeV.

hep-ex