Nonfactorizable contributions to the decay modeD0→K0K0

2001/01/19 by J. O. Eeg, Svjetlana Fajfer, S. Fajfer +2 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevd.64.034010

published as Phys.Rev. D64 (2001) 034010 · 20 pages, 8 figures

arxiv created 2001/01/19 · openalex publication_date 2001/07/03 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We point out that the decay mode D⁰\ensuremath→K⁰K⁰ has no factorizable contribution. In chiral perturbation language, treating D⁰ as heavy, the O(p) contribution is zero. We calculate the nonfactorizable chiral loop contributions of order O(p³). Then, we use a heavy-light type chiral quark model to calculate nonfactorizable tree level terms, also of order O(p³), proportional to the gluon condensate. A priori, chiral loops are not expected to give good precision because the energy release in this decay is almost 800 MeV. Still, we find that both the chiral loops and the gluon condensate contributions are of the same order of magnitude as the experimental amplitude.

Citations

• Hadronic phases and isospin amplitudes in D(B)→ππ and decays
• Nonfactorization in hadronic two-body Cabibbo-favored decays ofD0andD+
• Calculations in external fields in quantum chromodynamics. Technical review
• Charm nonleptonic decays and final state interactions
• QCD Factorization forB→ππDecays: Strong Phases andCPViolation in the Heavy Quark Limit
• Review of Particle Physics
• Phenomenological Lagrangians

Cited by

• Color suppressed contribution toB¯d0→π0π0
• Flavor symmetry and decays of charmed mesons to pairs of light pseudoscalars