2001/12/31 by Gustavo Burdman, Eugene Golowich, JoAnne Hewett +2 · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Charm (quantum number) #Cosmology and Gravitation Theories #Electroweak interaction #Gauge (firearms) #Higgs boson #Meson #Minimal Supersymmetric Standard Model #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum chromodynamics #R-parity #Sensitivity (control systems) #Standard Model (mathematical formulation) #Supersymmetry #Symmetry breaking #Vector meson #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevd.66.014009
published as Phys.Rev.D66:014009,2002 · 45 pages, typos fixed, discussions added
arxiv created 2002/03/01 · openalex publication_date 2002/07/29 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We perform a comprehensive study of a number of rare charm decays, incorporating the first evaluation of the QCD corrections to the short distance contributions, as well as examining the long range effects. For processes mediated by the \stackrel\ensuremath→cul+l^\ensuremath- transitions, we show that sensitivity to short distance physics exists in kinematic regions away from the vector meson resonances that dominate the total rate. In particular, we find that \stackrel\ensuremath→D\ensuremathπl+l^\ensuremath- and \stackrel\ensuremath→D\ensuremathρl+l^\ensuremath- are sensitive to nonuniversal soft-breaking effects in the minimal supersymmetric standard model with R-parity conservation. We separately study the sensitivity of these modes to R-parity violating effects and derive new bounds on R-parity violating couplings. We also obtain predictions for these decays within extensions of the standard model, including extensions of the Higgs, gauge and fermion sectors, as well as models of dynamical electroweak symmetry breaking.