RelatingD0−D¯0mixing andD0→l+l−with new physics

2009/03/25 by Eugene Golowich, JoAnne Hewett, JoAnne L. Hewett +2 · 2 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.79.114030

published as Phys.Rev.D79:114030,2009 · 25 pages, 3 figures; typos corrected and references added

arxiv created 2009/03/25 · openalex publication_date 2009/06/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We point out how, in certain models of new physics, the same combination of couplings occurs in the amplitudes for both D⁰\mathrm\text\ensuremath-D⁰ mixing and the rare decays D⁰\ensuremath→\ensuremathℓ⁺\ensuremathℓ^\ensuremath-. If the new physics dominates and is responsible for the observed mixing, then a very simple correlation exists between the magnitudes of each; in fact the rates for the decay D⁰\ensuremath→\ensuremathℓ⁺\ensuremathℓ^\ensuremath- are completely fixed by the mixing. Observation of D⁰\ensuremath→\ensuremathℓ⁺\ensuremathℓ^\ensuremath- in excess of the standard model prediction could identify new physics contributions to D⁰\mathrm\text\ensuremath-D⁰ mixing.

Citations

• Review of Particle Physics
• Lifetime difference inD0−D¯0mixing withinR-parity-violating supersymmetry
• Matrix elements of four-fermion operators with quenched Wilson fermions
• D0-D¯<mml:mprescripts/>0mixing in the presence of isosinglet quarks
• Search for Flavor-Changing Neutral Current and Lepton-Flavor Violating Decays ofD0→l+l−
• Effects of Superheavy Quarks and Leptons in Low-Energy Weak Processes KL-> Formula, K+-> + Formula and K0 Formula0
• Updated constraints on new physics in rare charm decays

Cited by

• Measurement ofD0−D¯0mixing using the ratio of lifetimes for the decaysD0→K−π+andK+K−
• Manifestations of warped extra dimension in rare charm decays and asymmetries