1999/01/31 by Harry J. Lipkin, Zhi‐zhong Xing, Zhi-zhong Xing · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph
paper · pdf · doi:10.1016/s0370-2693(99)00170-7
published as Phys.Lett. B450 (1999) 405-411 · Latex 12 pages (3 figs). Phys. Lett. B (in printing)
arxiv created 1999/02/02 · openalex publication_date 1999/03/01 · arxiv updated 2009/11/30 · openalex created_date 2016/08/23 · openalex updated_date 2026/07/28
Flavor symmetry and symmetry breaking, K0-K0 mixing and possible effects of new physics on CP violation in weak decay modes D± → KS,L + X±, (KS,L + π0)K^* + X± (for X =π, ρ, a1) and D±s → KS,L + X±s, (KS,L +π0)K^* + X±s (for Xs = K, K^*) are analyzed. Relations between D± and D±s decay branching ratios are obtained from the d ⇔ s subgroup of SU(3) and dominant symmetry-breaking mechanisms are investigated. A CP asymmetry of magnitude 3.3× 10-3 is shown to result in the standard model from K0-K0 mixing in the final-state. New physics affecting the doubly Cabibbo-suppressed channels might either cancel this asymmetry or enhance it up to the percent level. A comparison between the CP asymmetries in D±(s) → KS X±(s) and D±(s) → KL X±(s) can pin down effects of new physics.