Evidence for the decay B0 →ηπ0

Pal, B.; MIN-ZU WANG; Pal, B., Schwartz, A.J., Abdesselam, A., Adachi, I., Aihara, H., Al Said, S., Arinstein, K., Asner, D.M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A.M., Bobrov, A., Bonvicini, G., Bozek, A., Bra?ko, M., Browder, T.E., ?ervenkov, D., Chang, M.-C., Chekelian, V., Chen, A., Cheon, B.G., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Dalseno, J., Dole?al, Z., Dr?sal, Z., Drutskoy, A., Dutta, D., Eidelman, S., Farhat, H., Fast, J.E., Ferber, T., Frost, O., Fulsom, B.G., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Getzkow, D., Gillard, R., Glattauer, R., Goh, Y.M., Golob, B., Grzymkowska, O., Hara, T., Hayasaka, K., Hayashii, H., He, X.H., Hou, W.-S., Huschle, M., Hyun, H.J., Iijima, T., Ishikawa, A., Itoh, R., Iwasaki, Y., Jaegle, I., Julius, T., Kang, K.H., Kato, E., Kiesling, C., Kim, D.Y., Kim, J.B., Kim, J.H., Kim, K.T., Kim, M.J., Kim, S.H., Kim, Y.J., Kinoshita, K., Ko, B.R., Kody?, P., Korpar, S., Kri?an, P., Krokovny, P., Kuhr, T., Kumita, T., Kuzmin, A., Kwon, Y.-J., Lange, J.S., Lee, D.H., Lee, I.S., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Lukin, P., Matvienko, D., Miyata, H., Mohanty, G.B., Moll, A., Moon, H.K., Nakamura, K.R., Nakano, E., Nakao, M., Nanut, T., Natkaniec, Z., Nayak, M., Nishida, S., Ogawa, S., Okuno, S., Pakhlov, P., Pakhlova, G., Park, C.W., Park, H., Pedlar, T.K., Pes?ntez, L., Petri?, M., Piilonen, L.E., Pulvermacher, C., Ribe?l, E., Ritter, M., Rostomyan, A., Ryu, S., Sakai, Y., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sato, Y., Schneider, O., Schnell, G., Schwanda, C., Senyo, K., Seon, O., Sevior, M.E., Shapkin, M., Shebalin, V., Shen, C.P., Shibata, T.-A., Shiu, J.-G., Sibidanov, A., Simon, F., Sohn, Y.-S., Solovieva, E., Stani?, S., Stari?, M., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Tamponi, U., Teramoto, Y., Thorne, F., Uchida, M., Uehara, S., Unno, Y., Uno, S., Usov, Y., Van Hulse, C., Vanhoefer, P., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M.N., Wang, C.H., Wang, M.-Z., Wang, P., Wang, X.L., Watanabe, Y., Won, E., Yamamoto, H., Yamaoka, J., Yashchenko, S., Zhang, Z.P., Zhilich, V., Zhulanov, V., Zupanc, A.

doi:10.1103/PhysRevD.92.011101

Evidence for the decay B0 →ηπ0

Journal

Physical Review D - Particles, Fields, Gravitation and Cosmology

Journal Volume

92

Journal Issue

1

Date Issued

2015

Author(s)

Pal, B.

MIN-ZU WANG

DOI

10.1103/PhysRevD.92.011101

URI

https://scholars.lib.ntu.edu.tw/handle/123456789/440737

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937231431&doi=10.1103%2fPhysRevD.92.011101&partnerID=40&md5=56a0f9c80530df26f3c044e4e3694511

Abstract

We report a search for the charmless hadronic decay B0→ηπ0 with a data sample corresponding to an integrated luminosity of 694 fb-1 containing 753×106 BB¯ pairs. The data were collected by the Belle experiment running on the Y(4S) resonance at the KEKB e+e- collider. We measure a branching fraction B(B0→ηπ0)=(4.1-1.5-0.7+1.7+0.5)×10-7, where the first uncertainty is statistical and the second is systematic. Our measurement gives an upper limit of B(B0→ηπ0)<6.5×10-7 at 90% confidence level. The signal has a significance of 3.0 standard deviations and constitutes the first evidence for this decay mode.

Type

journal article

Evidence for the decay B0 →ηπ0

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