Evidence for the decay B0 →ηπ0

B. Pal, A. J. Schwartz, A. Abdesselam, I. Adachi, H. Aihara, S. Al Said, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, V. Babu, I. Badhrees, A. M. Bakich, A. Bobrov, G. Bonvicini, A. Bozek, M. Bračko, T. E. Browder, D. Červenkov & 151 others M. C. Chang, V. Chekelian, A. Chen, B. G. Cheon, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. E. Fast, T. Ferber, O. Frost, B. G. Fulsom, V. Gaur, N. Gabyshev, S. Ganguly, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. M. Goh, B. Golob, O. Grzymkowska, T. Hara, K. Hayasaka, H. Hayashii, X. H. He, W. S. Hou, M. Huschle, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, T. Julius, K. H. Kang, E. Kato, C. Kiesling, D. Y. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, S. H. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kuhr, T. Kumita, A. Kuzmin, Youngjoon Kwon, J. S. Lange, D. H. Lee, I. S. Lee, Y. Li, L. Li Gioi, J. Libby, D. Liventsev, P. Lukin, D. Matvienko, H. Miyata, G. B. Mohanty, A. Moll, H. K. Moon, K. R. Nakamura, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, S. Nishida, S. Ogawa, S. Okuno, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, T. K. Pedlar, L. Pesántez, M. Petrič, L. E. Piilonen, C. Pulvermacher, E. Ribežl, M. Ritter, A. Rostomyan, S. Ryu, Y. Sakai, S. Sandilya, D. Santel, L. Santelj, T. Sanuki, Y. Sato, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, V. Shebalin, C. P. Shen, T. A. Shibata, J. G. Shiu, A. Sibidanov, F. Simon, Y. S. Sohn, E. Solovieva, S. Stanič, M. Starič, M. Sumihama, K. Sumisawa, T. Sumiyoshi, U. Tamponi, Y. Teramoto, F. Thorne, M. Uchida, S. Uehara, Y. Unno, S. Uno, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, A. Vinokurova, V. Vorobyev, A. Vossen, M. N. Wagner, C. H. Wang, M. Z. Wang, P. Wang, X. L. Wang, Y. Watanabe, E. Won, H. Yamamoto, J. Yamaoka, S. Yashchenko, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

Research output: Contribution to journal › Article

3 Citations (Scopus)

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.

Original languageEnglish
Article number011101
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume92
Issue number1
DOIs
Publication statusPublished - 2015 Jul 9

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decay
confidence
standard deviation
luminosity

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

Pal, B., Schwartz, A. J., Abdesselam, A., Adachi, I., Aihara, H., Al Said, S., ... Zupanc, A. (2015). Evidence for the decay B0 →ηπ0. Physical Review D - Particles, Fields, Gravitation and Cosmology, 92(1), [011101]. https://doi.org/10.1103/PhysRevD.92.011101
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. ; Bračko, M. ; Browder, T. E. ; Červenkov, D. ; Chang, M. C. ; Chekelian, V. ; Chen, A. ; Cheon, B. G. ; Cho, K. ; Chobanova, V. ; Choi, Y. ; Cinabro, D. ; Dalseno, J. ; Doležal, Z. ; Drásal, 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. ; Kodyš, P. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kuhr, T. ; Kumita, T. ; Kuzmin, A. ; Kwon, Youngjoon ; 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. ; Pesántez, L. ; Petrič, M. ; Piilonen, L. E. ; Pulvermacher, C. ; Ribežl, 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. ; Stanič, S. ; Starič, 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. / Evidence for the decay B0 →ηπ0. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 ; Vol. 92, No. 1.
@article{a8f5ea21744d4a4b926783738b7e94e6,
title = "Evidence for the decay B0 →ηπ0",
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.",
author = "B. Pal and Schwartz, {A. J.} and A. Abdesselam and I. Adachi and H. Aihara and {Al Said}, S. and K. Arinstein and Asner, {D. M.} and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and I. Badhrees and Bakich, {A. M.} and A. Bobrov and G. Bonvicini and A. Bozek and M. Bračko and Browder, {T. E.} and D. Červenkov and Chang, {M. C.} and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Cho and V. Chobanova and Y. Choi and D. Cinabro and J. Dalseno and Z. Doležal and Z. Dr{\'a}sal and A. Drutskoy and D. Dutta and S. Eidelman and H. Farhat and Fast, {J. E.} and T. Ferber and O. Frost and Fulsom, {B. G.} and V. Gaur and N. Gabyshev and S. Ganguly and A. Garmash and D. Getzkow and R. Gillard and R. Glattauer and Goh, {Y. M.} and B. Golob and O. Grzymkowska and T. Hara and K. Hayasaka and H. Hayashii and He, {X. H.} and Hou, {W. S.} and M. Huschle and Hyun, {H. J.} and T. Iijima and A. Ishikawa and R. Itoh and Y. Iwasaki and I. Jaegle and T. Julius and Kang, {K. H.} and E. Kato and C. Kiesling and Kim, {D. Y.} and Kim, {J. B.} and Kim, {J. H.} and Kim, {K. T.} and Kim, {M. J.} and Kim, {S. H.} and Kim, {Y. J.} and K. Kinoshita and Ko, {B. R.} and P. Kodyš and S. Korpar and P. Križan and P. Krokovny and T. Kuhr and T. Kumita and A. Kuzmin and Youngjoon Kwon and Lange, {J. S.} and Lee, {D. H.} and Lee, {I. S.} and Y. Li and {Li Gioi}, L. and J. Libby and D. Liventsev and P. Lukin and D. Matvienko and H. Miyata and Mohanty, {G. B.} and A. Moll and Moon, {H. K.} and Nakamura, {K. R.} and E. Nakano and M. Nakao and T. Nanut and Z. Natkaniec and M. Nayak and S. Nishida and S. Ogawa and S. Okuno and P. Pakhlov and G. Pakhlova and Park, {C. W.} and H. Park and Pedlar, {T. K.} and L. Pes{\'a}ntez and M. Petrič and Piilonen, {L. E.} and C. Pulvermacher and E. Ribežl and M. Ritter and A. Rostomyan and S. Ryu and Y. Sakai and S. Sandilya and D. Santel and L. Santelj and T. Sanuki and Y. Sato and O. Schneider and G. Schnell and C. Schwanda and K. Senyo and O. Seon and Sevior, {M. E.} and M. Shapkin and V. Shebalin and Shen, {C. P.} and Shibata, {T. A.} and Shiu, {J. G.} and A. Sibidanov and F. Simon and Sohn, {Y. S.} and E. Solovieva and S. Stanič and M. Starič and M. Sumihama and K. Sumisawa and T. Sumiyoshi and U. Tamponi and Y. Teramoto and F. Thorne and M. Uchida and S. Uehara and Y. Unno and S. Uno and Y. Usov and {Van Hulse}, C. and P. Vanhoefer and G. Varner and A. Vinokurova and V. Vorobyev and A. Vossen and Wagner, {M. N.} and Wang, {C. H.} and Wang, {M. Z.} and P. Wang and Wang, {X. L.} and Y. Watanabe and E. Won and H. Yamamoto and J. Yamaoka and S. Yashchenko and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and A. Zupanc",
year = "2015",
month = "7",
day = "9",
doi = "10.1103/PhysRevD.92.011101",
language = "English",
volume = "92",
journal = "Physical review D: Particles and fields",
issn = "1550-7998",
publisher = "American Physical Society",
number = "1",

}

Pal, B, Schwartz, AJ, Abdesselam, A, Adachi, I, Aihara, H, Al Said, S, Arinstein, K, Asner, DM, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bakich, AM, Bobrov, A, Bonvicini, G, Bozek, A, Bračko, M, Browder, TE, Červenkov, D, Chang, MC, Chekelian, V, Chen, A, Cheon, BG, Cho, K, Chobanova, V, Choi, Y, Cinabro, D, Dalseno, J, Doležal, Z, Drásal, Z, Drutskoy, A, Dutta, D, Eidelman, S, Farhat, H, Fast, JE, Ferber, T, Frost, O, Fulsom, BG, Gaur, V, Gabyshev, N, Ganguly, S, Garmash, A, Getzkow, D, Gillard, R, Glattauer, R, Goh, YM, Golob, B, Grzymkowska, O, Hara, T, Hayasaka, K, Hayashii, H, He, XH, Hou, WS, Huschle, M, Hyun, HJ, Iijima, T, Ishikawa, A, Itoh, R, Iwasaki, Y, Jaegle, I, Julius, T, Kang, KH, Kato, E, Kiesling, C, Kim, DY, Kim, JB, Kim, JH, Kim, KT, Kim, MJ, Kim, SH, Kim, YJ, Kinoshita, K, Ko, BR, Kodyš, P, Korpar, S, Križan, P, Krokovny, P, Kuhr, T, Kumita, T, Kuzmin, A, Kwon, Y, Lange, JS, Lee, DH, Lee, IS, Li, Y, Li Gioi, L, Libby, J, Liventsev, D, Lukin, P, Matvienko, D, Miyata, H, Mohanty, GB, Moll, A, Moon, HK, Nakamura, KR, Nakano, E, Nakao, M, Nanut, T, Natkaniec, Z, Nayak, M, Nishida, S, Ogawa, S, Okuno, S, Pakhlov, P, Pakhlova, G, Park, CW, Park, H, Pedlar, TK, Pesántez, L, Petrič, M, Piilonen, LE, Pulvermacher, C, Ribežl, 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, ME, Shapkin, M, Shebalin, V, Shen, CP, Shibata, TA, Shiu, JG, Sibidanov, A, Simon, F, Sohn, YS, Solovieva, E, Stanič, S, Starič, 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, MN, Wang, CH, Wang, MZ, Wang, P, Wang, XL, Watanabe, Y, Won, E, Yamamoto, H, Yamaoka, J, Yashchenko, S, Zhang, ZP, Zhilich, V, Zhulanov, V & Zupanc, A 2015, 'Evidence for the decay B0 →ηπ0', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 92, no. 1, 011101. https://doi.org/10.1103/PhysRevD.92.011101

Evidence for the decay B0 →ηπ0. / 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.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chang, M. C.; Chekelian, V.; Chen, A.; Cheon, B. G.; Cho, K.; Chobanova, V.; Choi, Y.; Cinabro, D.; Dalseno, J.; Doležal, Z.; Drásal, 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.; Kodyš, P.; Korpar, S.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumita, T.; Kuzmin, A.; Kwon, Youngjoon; 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.; Pesántez, L.; Petrič, M.; Piilonen, L. E.; Pulvermacher, C.; Ribežl, 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.; Stanič, S.; Starič, 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.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 92, No. 1, 011101, 09.07.2015.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Evidence for the decay B0 →ηπ0

AU - Pal, B.

AU - Schwartz, A. J.

AU - Abdesselam, A.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Arinstein, K.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Badhrees, I.

AU - Bakich, A. M.

AU - Bobrov, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Cho, K.

AU - Chobanova, V.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dalseno, J.

AU - Doležal, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Dutta, D.

AU - Eidelman, S.

AU - Farhat, H.

AU - Fast, J. E.

AU - Ferber, T.

AU - Frost, O.

AU - Fulsom, B. G.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Ganguly, S.

AU - Garmash, A.

AU - Getzkow, D.

AU - Gillard, R.

AU - Glattauer, R.

AU - Goh, Y. M.

AU - Golob, B.

AU - Grzymkowska, O.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - He, X. H.

AU - Hou, W. S.

AU - Huschle, M.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, Y.

AU - Jaegle, I.

AU - Julius, T.

AU - Kang, K. H.

AU - Kato, E.

AU - Kiesling, C.

AU - Kim, D. Y.

AU - Kim, J. B.

AU - Kim, J. H.

AU - Kim, K. T.

AU - Kim, M. J.

AU - Kim, S. H.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Ko, B. R.

AU - Kodyš, P.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kumita, T.

AU - Kuzmin, A.

AU - Kwon, Youngjoon

AU - Lange, J. S.

AU - Lee, D. H.

AU - Lee, I. S.

AU - Li, Y.

AU - Li Gioi, L.

AU - Libby, J.

AU - Liventsev, D.

AU - Lukin, P.

AU - Matvienko, D.

AU - Miyata, H.

AU - Mohanty, G. B.

AU - Moll, A.

AU - Moon, H. K.

AU - Nakamura, K. R.

AU - Nakano, E.

AU - Nakao, M.

AU - Nanut, T.

AU - Natkaniec, Z.

AU - Nayak, M.

AU - Nishida, S.

AU - Ogawa, S.

AU - Okuno, S.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H.

AU - Pedlar, T. K.

AU - Pesántez, L.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Pulvermacher, C.

AU - Ribežl, E.

AU - Ritter, M.

AU - Rostomyan, A.

AU - Ryu, S.

AU - Sakai, Y.

AU - Sandilya, S.

AU - Santel, D.

AU - Santelj, L.

AU - Sanuki, T.

AU - Sato, Y.

AU - Schneider, O.

AU - Schnell, G.

AU - Schwanda, C.

AU - Senyo, K.

AU - Seon, O.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shebalin, V.

AU - Shen, C. P.

AU - Shibata, T. A.

AU - Shiu, J. G.

AU - Sibidanov, A.

AU - Simon, F.

AU - Sohn, Y. S.

AU - Solovieva, E.

AU - Stanič, S.

AU - Starič, M.

AU - Sumihama, M.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Tamponi, U.

AU - Teramoto, Y.

AU - Thorne, F.

AU - Uchida, M.

AU - Uehara, S.

AU - Unno, Y.

AU - Uno, S.

AU - Usov, Y.

AU - Van Hulse, C.

AU - Vanhoefer, P.

AU - Varner, G.

AU - Vinokurova, A.

AU - Vorobyev, V.

AU - Vossen, A.

AU - Wagner, M. N.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, P.

AU - Wang, X. L.

AU - Watanabe, Y.

AU - Won, E.

AU - Yamamoto, H.

AU - Yamaoka, J.

AU - Yashchenko, S.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zupanc, A.

PY - 2015/7/9

Y1 - 2015/7/9

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84937231431&partnerID=8YFLogxK

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U2 - 10.1103/PhysRevD.92.011101

DO - 10.1103/PhysRevD.92.011101

M3 - Article

VL - 92

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 1

M1 - 011101

ER -

Pal B, Schwartz AJ, Abdesselam A, Adachi I, Aihara H, Al Said S et al. Evidence for the decay B0 →ηπ0. Physical Review D - Particles, Fields, Gravitation and Cosmology. 2015 Jul 9;92(1). 011101. https://doi.org/10.1103/PhysRevD.92.011101

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