Evidence for the decay D 0 K + - + -

We present a search for the "wrong-sign" decay D 0 K + - + - using 9 fb -1 of e + e - collisions on and just below the Y(4S) resonance. This decay can occur either through a doubly Cabibbo-suppressed process or through mixing to a D 0 followed by a Cabibbo-favored process. Our result for the time-integrated wrong-sign rate relative to the decay D 0 K - + - + is (0.0041 -0.0011+0.0012 (stat)0.0004(syst)) (1.070.10)(phase space), which has a statistical significance of 3.9 standard deviations.

Dytman, S. A., Savinov, V., Chen, S., Hinson, J. W., Lee, J., Miller, D. H., ... Ershov, A.

Dytman, SA||Savinov, V||Chen, S||Hinson, JW||Lee, J||Miller, DH||Shibata, EI||Shipsey, IPJ||Pavlunin, V||Cronin-Hennessy, D||Lyon, AL||Park, W||Thorndike, EH||Coan, TE||Gao, YS||Liu, F||Maravin, Y||Narsky, I||Stroynowski, R||Ye, J||Artuso, M||Boulahouache, C||Bukin, K||Dambasuren, E||Majumder, G||Mountain, R||Skwarnicki, T||Stone, S||Wang, JC||Zhao, H||Kopp, S||Kostin, M||Mahmood, AH||Csorna, SE||Danko, I||McLean, KW||Xu, Z||Bonvicini, G||Cinabro, D||Dubrovin, M||McGee, S||Bornheim, A||Lipeles, E||Pappas, SP||Shapiro, A||Sun, WM||Weinstein, AJ||Mahapatra, R||Masek, G||Paar, HP||Morrison, RJ||Nelson, HN||Briere, RA||Chen, GP||Ferguson, T||Vogel, H||Alexander, JP||Bebek, C||Berkelman, K||Blanc, F||Boisvert, V||Cassel, DG||Drell, PS||Duboscq, JE||Ecklund, KM||Ehrlich, R||Gibbons, L||Gittelman, B||Gray, SW||Hartill, DL||Heltsley, BK||Hsu, L||Jones, CD||Kandaswamy, J||Kreinick, DL||Lohner, M||Magerkurth, A||Mahlke-Krüger, H||Meyer, TO||Mistry, NB||Nordberg, E||Palmer, M||Patterson, JR||Peterson, D||Pivarski, J||R

Evidence for the decay D ⁰ K ⁺ ^- ⁺ ^- Academic Article