Measurement of time-dependent $CP$ violation parameters in $B^0 \to K_0^SK_0^SK_0^S$ decays at Belle

We measure the time-dependent CP violation parameters in B0→KS0KS0KS0 decays using 772×106BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The obtained mixing-induced and direct CP asymmetries are -0.71±0.23 (stat)±0.05 (syst) and 0.12±0...

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Veröffentlicht in:Physical review. D 2021, Vol.103 (3)
Hauptverfasser: Kang, K.H., Park, H., Higuchi, T., Miyabayashi, K., Sumisawa, K., Adachi, I., Ahn, J.K., Aihara, H., Al Said, S., Asner, D.M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Bakich, A.M., Behera, P., Beleño, C., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T.E., Campajola, M., Cao, L., Červenkov, D., Chang, M.-C., Chekelian, V., Chen, A., Cheon, B.G., Chilikin, K., Cho, K., Choi, S.-K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Doležal, Z., Dong, T.V., Eidelman, S., Fast, J.E., Ferber, T., Fulsom, B.G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Greenwald, D., Guan, Y., Hartbrich, O., Hayasaka, K., Hayashii, H., Hernandez Villanueva, M., Hou, W.-S., Hsu, C.-L., Inami, K., Inguglia, G., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W.W., Jang, E.-J., Jeon, H.B., Jia, S., Jin, Y., Joo, K.K., Kaliyar, A.B., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, C.H., Kim, D.Y., Kim, K.-H., Kim, S.H., Kim, Y.-K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y.-J., Lange, J.S., Lee, I.S., Lee, S.C., Li, J., Li, L.K., Li, Y.B.
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Sprache:eng
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Zusammenfassung:We measure the time-dependent CP violation parameters in B0→KS0KS0KS0 decays using 772×106BB¯ pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The obtained mixing-induced and direct CP asymmetries are -0.71±0.23 (stat)±0.05 (syst) and 0.12±0.16 (stat)±0.05 (syst), respectively. These values are consistent with the Standard Model predictions. The significance of CP violation differs from zero by 2.5 standard deviations.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.103.032003