1. First measurement of the CKM angle ϕ 3 with B ± → D( <math> <msubsup> <mi>K</mi> <mi>S</mi> <mn>0</mn> </msubsup> </math> $$ {K}_{\mathrm{S}}^0 $$ π + π − π 0) K ± decays
- Author
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Resmi, P., Libby, J., Trabelsi, K., Adachi, I., Aihara, H., Al Said, S., Asner, D., Aulchenko, V., Aushev, T., Babu, V., Badhrees, I., Bakich, A., Beleño, C., Bennett, J., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bozek, A., Bračko, M., Campajola, M., Červenkov, D., Chen, A., Cheon, B., Cho, H., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Nardo, G., Capua, F., Carlo, S., Doležal, Z., Dong, T., Eidelman, S., Epifanov, D., Fast, J., Ferber, T., Fulsom, B., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Guan, Y., Hayasaka, K., Hayashii, H., Hou, W.S., Huang, K., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W., Jeon, H., Jin, Y., Joffe, D., Kaliyar, A., Kang, K., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D., Kim, K., Kim, S., Kinoshita, K., Kodyš, P., Kotchetkov, D., Krǐzan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, R., Kuzmin, A., Kwon, Y.J., Lee, S., Li, Y., Lieret, K., Liventsev, D., Lu, P.C., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G., Moon, H., Nakano, T., Nakao, M., Nath, K., Nayak, M., Niiyama, M., Nisar, N., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Pedlar, T., Pestotnik, R., Piilonen, L., Prencipe, E., Prim, M., Ritter, M., Röhrken, M., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A., Seino, Y., Senyo, K., Sevior, M., Shebalin, V., Shen, C., Shiu, J.G., Shwartz, B., Solovieva, E., Starič, M., Stottler, Z., Strube, J., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Usov, Y., Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, B., Wang, C., Wang, M.Z., Wang, X., Watanuki, S., Won, E., Yang, S., Ye, H., Zhang, Z., Zhilich, V., and Zhukova, V.
- Abstract
We present the first model-independent measurement of the CKM unitarity triangle angle ϕ 3 using B ± → D( K S 0 $$ {K}_{\mathrm{S}}^0 $$ π + π − π 0) K ± decays, where D indicates either a D 0 or D ¯ $$ \overline{D} $$ 0 meson. Measurements of the strong-phase difference of the D → K S 0 $$ {K}_{\mathrm{S}}^0 $$ π + π − π 0 amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of 772 × 106 B B ¯ $$ \overline{B} $$ events collected at the Υ(4S) resonance. We obtain ϕ 3 = ( 5.7 − 8.8 + 10.2 $$ {5.7}_{-8.8}^{+10.2} $$ ±3.5±5.7) ° and the suppressed amplitude ratio r B = 0.323±0.147±0.023±0.051. Here the first uncertainty is statistical, the second is the experimental systematic, and the third is due to the precision of the strong-phase parameters measured from CLEO-c data. The 95% confidence interval on ϕ 3 is (−29.7, 109.5) ° , which is consistent with the current world average.
- Published
- 2019