Puzzles in Hadronic Physics and Novel Quantum Chromodynamics Phenomenology
We review some outstanding puzzles and experimental anomalies in hadron physics that appear to challenge conventional wisdom and, in some cases, the foundations of quantum chromodynamics (QCD). We also discuss possible solutions and propose new tests and experiments that could illuminate th ... more
Next-to-Leading-Order Event Generators
We review the methods developed for combining the parton shower approximation to quantum chromodynamics with fixed-order perturbation theory so as to achieve next-to-leading-order (NLO) accuracy for inclusive observables. These developments have made it possible to generate fully simulated ... more
Neutrino Masses from the Top Down
General classes of mechanisms for generating small neutrino masses are surveyed from a top-down (superstring) perspective. In particular, string constructions have motivated various possibilities involving higher-dimensional operators, string instantons, and wave-function overlaps in large ... more