arXiv subjects

Donald Summers

Publications and source records attributed to Donald Summers.

2 recordsLinked to original sources

arXiv2010

Recent Developments in Simulations of an Inverse Cyclotron for Intense Muon Beams

A number of recent developments have led to simulations of an inverse cyclotron for cooling intense muon beams for neutrino factories and muon colliders. Such a device could potentially act as a novel beam cooling mechanism for muons, and it would be significantly smaller and cheaper than other cooling channel designs. Realistic designs are still being explored, but the first simulations of particle tracking in the inverse cyclotron, with accumulation in the cyclotron core, have been done with electrostatic simulations in the particle-in-cell code VORPAL. We present an overview of the muon inverse cyclotron concept and recent simulation results.

physics.acc-ph↗

arXiv2004

Study of the Absolute Branching Fraction of Upsilon(4S) to anti-B^0 B^0 with Partial Reconstruction of anti-B^0 to D^{*+} lepton^- anti-nu_{lepton} at BABAR

Based on a data sample of 81.7 fb^-1 collected at the Upsilon(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC, we present the current status of the measurement of the branching fraction of Upsilon(4S) to B0bar B^0. Our study of the decay was performed through the exclusive decays B0bar to D^{*+} \ell^{-} barν_{\ell} using a partial reconstruction method, where the D^{*+} is detected only through the soft pion daughter from the decay D^{*+} to D^{0} pi^{+}.

hep-ex↗