Observation of D0 - D¯ 0 Mixing in e+e- Collisions

Observation of D0 - D¯ 0 Mixing in e+e- Collisions

Here, we observe D0 - D¯ 0 mixing in the decay D0→K+π- using a data sample of integrated luminosity 976 fb-1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. We also measure the mixing parameters x'2=(0.09±0.22)×10-3 and y'=(4.6±3.4)×10-3 and the ratio of doub...

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Veröffentlicht in:Physical review letters 2014-03, Vol.112 (11)
Hauptverfasser: Ko, Byeong Rok, Adachi, I., Aulchenko, V., Aushev, T., Bhardwaj, V., Bobrov, A., Bozek, A., Bracko, Marko, Browder, Thomas E., Cervenkov, D., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Cho, I- S., Chobanova, V., Cinabro, David A., Dolezal, Z., Dutta, Deepanwita, Dutta, K., Farhat, H., Ferber, T., Garmash, A., Gillard, R., Glattaur, R., Golob, B., Hara, Takanori, Hayashii, H., He, X. H., Higuchi, T., Hoshi, Y., Hou, W. S., Hyun, H. J., Itoh, R., Iwasaki, Y., Jaegle, Igal, Julius, Travis, Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, J. H., Kim, M. J., Kim, Y. J., Krizan, P., Krokovny, Pavel, Kuhr, Thomas, Kumita, T., Kwon, Y. J., Li, Y., Liu, C., Liu, Z. Q., Lukin, P., Miyata, H., Mohanty, G. B., Mussa, Roberto, Nakano, E., Natkaniec, Z., Nedelkovska, E., Nisar, N. K., Nitoh, O., Ogawa, S., Okuno, S., Pakhlova, Galina, Park, H. K., Pedlar, Todd K., Peng, T., Petric, Marko, Piilonen, Leo E., Ryu, S., Sahoo, Himansu B., Savinov, Vladimir, Schnell, G., Schwanda, C., Schwartz, Alan J., Seidl, R., Sevior, Martin E., Shapkin, M., Shiu, Jing-Ge, Sibidanov, A., Simon, F., Singh, J. B., Sokolov, A., Stanic, S., Staric, M., Steder, M., Tatishvili, Gocha, Trabelsi, K., Uehara, S., Unno, Yuji, Uno, S., Van Hulse, C., Varner, Gary, Vinokurova, A., Vorobyev, V., Wagner, M. N., Watanabe, Y., Yashchenko, S., Yook, Youngmin, Zhang, C. C., Zhang, Z. P.
Format: Artikel
Sprache:eng
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ATOMIC AND MOLECULAR PHYSICS
Environmental Molecular Sciences Laboratory
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Zusammenfassung:Here, we observe D0 - D¯ 0 mixing in the decay D0→K+π- using a data sample of integrated luminosity 976 fb-1 collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. We also measure the mixing parameters x'2=(0.09±0.22)×10-3 and y'=(4.6±3.4)×10-3 and the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates RD=(3.53±0.13)×10-3, where the uncertainties are statistical and systematic combined. Our measurement excludes the no-mixing hypothesis at the 5.1 standard deviation level.
ISSN:0031-9007