Evidence for B→Kη′γ decays at Belle

R. Wedd; I. Adachi; H. Aihara; K. Arinstein; V. Aulchenko; A. M. Bakich; V. Balagura; E. Barberio; A. Bay; K. Belous; V. Bhardwaj; M. Bischofberger; A. Bondar; A. Bozek; M. Bračko; T. E. Browder; Y. Chao; A. Chen; B. G. Cheon; I. S. Cho; Y. Choi; J. Dalseno; M. Dash; A. Drutskoy; S. Eidelman; D. Epifanov; N. Gabyshev; P. Goldenzweig; H. Ha; Y. Horii; Y. Hoshi; W. S. Hou; H. J. Hyun; T. Iijima; K. Inami; A. Ishikawa; R. Itoh; M. Iwasaki; D. H. Kah; N. Katayama; H. Kawai; T. Kawasaki; H. O. Kim; J. H. Kim; Y. I. Kim; Y. J. Kim; K. Kinoshita; B. R. Ko; P. Križan; P. Krokovny; T. Kuhr; R. Kumar; A. Kuzmin; Y. J. Kwon; S. H. Kyeong; M. J. Lee; S. H. Lee; T. Lesiak; J. Li; A. Limosani; C. Liu; D. Liventsev; R. Louvot; A. Matyja; S. McOnie; H. Miyata; R. Mizuk; T. Mori; Y. Nagasaka; M. Nakao; H. Nakazawa; Z. Natkaniec; S. Nishida; O. Nitoh; T. Ohshima; S. Okuno; H. Ozaki; P. Pakhlov; G. Pakhlova; C. W. Park; H. K. Park; K. S. Park; R. Pestotnik; L. E. Piilonen; A. Poluektov; H. Sahoo; Y. Sakai; O. Schneider; J. Schümann; K. Senyo; M. E. Sevior; M. Shapkin; V. Shebalin; J. G. Shiu; B. Shwartz; J. B. Singh; A. Sokolov; S. Stanič; M. Starič; K. Sumisawa; T. Sumiyoshi; S. Suzuki; G. N. Taylor; Y. Teramoto; K. Trabelsi; S. Uehara; Y. Unno; S. Uno; P. Urquijo; Y. Usov; G. Varner; K. E. Varvell; K. Vervink; A. Vinokurova; C. H. Wang; M. Z. Wang; P. Wang; Y. Watanabe; J. Wicht; E. Won; B. D. Yabsley; H. Yamamoto; Y. Yamashita; Z. P. Zhang; V. Zhilich; V. Zhulanov; T. Zivko; A. Zupanc; O. Zyukova

doi:10.1103/PhysRevD.81.111104

Evidence for B→Kη′γ decays at Belle

R. Wedd, I. Adachi, H. Aihara, K. Arinstein, V. Aulchenko, A. M. Bakich, V. Balagura, E. Barberio, A. Bay, K. Belous, V. Bhardwaj, M. Bischofberger, A. Bondar, A. Bozek, M. Bračko, T. E. Browder, Y. Chao, A. Chen, B. G. Cheon, I. S. ChoY. Choi, J. Dalseno, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, N. Gabyshev, P. Goldenzweig, H. Ha, Y. Horii, Y. Hoshi, W. S. Hou, H. J. Hyun, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, D. H. Kah, N. Katayama, H. Kawai, T. Kawasaki, H. O. Kim, J. H. Kim, Y. I. Kim, Y. J. Kim, K. Kinoshita, B. R. Ko, P. Križan, P. Krokovny, T. Kuhr, R. Kumar, A. Kuzmin, Y. J. Kwon, S. H. Kyeong, M. J. Lee, S. H. Lee, T. Lesiak, J. Li, A. Limosani, C. Liu, D. Liventsev, R. Louvot, A. Matyja, S. McOnie, H. Miyata, R. Mizuk, T. Mori, Y. Nagasaka, M. Nakao, H. Nakazawa, Z. Natkaniec, S. Nishida, O. Nitoh, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, K. S. Park, R. Pestotnik, L. E. Piilonen, A. Poluektov, H. Sahoo, Y. Sakai, O. Schneider, J. Schümann, K. Senyo, M. E. Sevior, M. Shapkin, V. Shebalin, J. G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, S. Suzuki, G. N. Taylor, Y. Teramoto, K. Trabelsi, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, A. Vinokurova, C. H. Wang, M. Z. Wang, P. Wang, Y. Watanabe, J. Wicht, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, Z. P. Zhang, V. Zhilich, V. Zhulanov, T. Zivko, A. Zupanc, O. Zyukova

Department of Physics

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Abstract

We present the results of a search for the radiative decay B→Kη^′γ and find evidence for B ⁺→K⁺η^′γ decays at the 3.3 standard deviation level with a partial branching fraction of (3.6±1.2±0.4)×10^-6, where the first error is statistical and the second systematic. This measurement is restricted to the region of combined Kη^′ invariant mass less than 3.4GeV/c2. A 90% confidence level upper limit of 6.4×10^-6 is obtained for the partial branching fraction of the decay B0→K0η ^′γ in the same Kη^′ invariant mass region. These results are obtained from a 605fb^-1 data sample containing 657×106BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺e^- collider.

Original language	English
Article number	111104
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	81
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.81.111104
Publication status	Published - 2010 Jun 28

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.81.111104

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Wedd, R., Adachi, I., Aihara, H., Arinstein, K., Aulchenko, V., Bakich, A. M., Balagura, V., Barberio, E., Bay, A., Belous, K., Bhardwaj, V., Bischofberger, M., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., Chao, Y., Chen, A., Cheon, B. G., ... Zyukova, O. (2010). Evidence for B→Kη′γ decays at Belle. Physical Review D - Particles, Fields, Gravitation and Cosmology, 81(11), Article 111104. https://doi.org/10.1103/PhysRevD.81.111104

@article{56e116f7e8da41ffa0214866411f3b30,

title = "Evidence for B→Kη′γ decays at Belle",

abstract = "We present the results of a search for the radiative decay B→Kη′γ and find evidence for B +→K+η′γ decays at the 3.3 standard deviation level with a partial branching fraction of (3.6±1.2±0.4)×10-6, where the first error is statistical and the second systematic. This measurement is restricted to the region of combined Kη′ invariant mass less than 3.4GeV/c2. A 90% confidence level upper limit of 6.4×10-6 is obtained for the partial branching fraction of the decay B0→K0η ′γ in the same Kη′ invariant mass region. These results are obtained from a 605fb-1 data sample containing 657×106B{\=B} pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.",

author = "R. Wedd and I. Adachi and H. Aihara and K. Arinstein and V. Aulchenko and Bakich, {A. M.} and V. Balagura and E. Barberio and A. Bay and K. Belous and V. Bhardwaj and M. Bischofberger and A. Bondar and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and Y. Chao and A. Chen and Cheon, {B. G.} and Cho, {I. S.} and Y. Choi and J. Dalseno and M. Dash and A. Drutskoy and S. Eidelman and D. Epifanov and N. Gabyshev and P. Goldenzweig and H. Ha and Y. Horii and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and K. Inami and A. Ishikawa and R. Itoh and M. Iwasaki and Kah, {D. H.} and N. Katayama and H. Kawai and T. Kawasaki and Kim, {H. O.} and Kim, {J. H.} and Kim, {Y. I.} and Kim, {Y. J.} and K. Kinoshita and Ko, {B. R.} and P. Kri{\v z}an and P. Krokovny and T. Kuhr and R. Kumar and A. Kuzmin and Kwon, {Y. J.} and Kyeong, {S. H.} and Lee, {M. J.} and Lee, {S. H.} and T. Lesiak and J. Li and A. Limosani and C. Liu and D. Liventsev and R. Louvot and A. Matyja and S. McOnie and H. Miyata and R. Mizuk and T. Mori and Y. Nagasaka and M. Nakao and H. Nakazawa and Z. Natkaniec and S. Nishida and O. Nitoh and T. Ohshima and S. Okuno and H. Ozaki and P. Pakhlov and G. Pakhlova and Park, {C. W.} and Park, {H. K.} and Park, {K. S.} and R. Pestotnik and Piilonen, {L. E.} and A. Poluektov and H. Sahoo and Y. Sakai and O. Schneider and J. Sch{\"u}mann and K. Senyo and Sevior, {M. E.} and M. Shapkin and V. Shebalin and Shiu, {J. G.} and B. Shwartz and Singh, {J. B.} and A. Sokolov and S. Stani{\v c} and M. Stari{\v c} and K. Sumisawa and T. Sumiyoshi and S. Suzuki and Taylor, {G. N.} and Y. Teramoto and K. Trabelsi and S. Uehara and Y. Unno and S. Uno and P. Urquijo and Y. Usov and G. Varner and Varvell, {K. E.} and K. Vervink and A. Vinokurova and Wang, {C. H.} and Wang, {M. Z.} and P. Wang and Y. Watanabe and J. Wicht and E. Won and Yabsley, {B. D.} and H. Yamamoto and Y. Yamashita and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and T. Zivko and A. Zupanc and O. Zyukova",

year = "2010",

month = jun,

day = "28",

doi = "10.1103/PhysRevD.81.111104",

language = "English",

volume = "81",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "1550-7998",

number = "11",

}

Wedd, R, Adachi, I, Aihara, H, Arinstein, K, Aulchenko, V, Bakich, AM, Balagura, V, Barberio, E, Bay, A, Belous, K, Bhardwaj, V, Bischofberger, M, Bondar, A, Bozek, A, Bračko, M, Browder, TE, Chao, Y, Chen, A, Cheon, BG, Cho, IS, Choi, Y, Dalseno, J, Dash, M, Drutskoy, A, Eidelman, S, Epifanov, D, Gabyshev, N, Goldenzweig, P, Ha, H, Horii, Y, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Kah, DH, Katayama, N, Kawai, H, Kawasaki, T, Kim, HO, Kim, JH, Kim, YI, Kim, YJ, Kinoshita, K, Ko, BR, Križan, P, Krokovny, P, Kuhr, T, Kumar, R, Kuzmin, A, Kwon, YJ, Kyeong, SH, Lee, MJ, Lee, SH, Lesiak, T, Li, J, Limosani, A, Liu, C, Liventsev, D, Louvot, R, Matyja, A, McOnie, S, Miyata, H, Mizuk, R, Mori, T, Nagasaka, Y, Nakao, M, Nakazawa, H, Natkaniec, Z, Nishida, S, Nitoh, O, Ohshima, T, Okuno, S, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, CW, Park, HK, Park, KS, Pestotnik, R, Piilonen, LE, Poluektov, A, Sahoo, H, Sakai, Y, Schneider, O, Schümann, J, Senyo, K, Sevior, ME, Shapkin, M, Shebalin, V, Shiu, JG, Shwartz, B, Singh, JB, Sokolov, A, Stanič, S, Starič, M, Sumisawa, K, Sumiyoshi, T, Suzuki, S, Taylor, GN, Teramoto, Y, Trabelsi, K, Uehara, S, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Varvell, KE, Vervink, K, Vinokurova, A, Wang, CH, Wang, MZ, Wang, P, Watanabe, Y, Wicht, J, Won, E, Yabsley, BD, Yamamoto, H, Yamashita, Y, Zhang, ZP, Zhilich, V, Zhulanov, V, Zivko, T, Zupanc, A & Zyukova, O 2010, 'Evidence for B→Kη′γ decays at Belle', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 81, no. 11, 111104. https://doi.org/10.1103/PhysRevD.81.111104

TY - JOUR

T1 - Evidence for B→Kη′γ decays at Belle

AU - Wedd, R.

AU - Adachi, I.

AU - Aihara, H.

AU - Arinstein, K.

AU - Aulchenko, V.

AU - Bakich, A. M.

AU - Balagura, V.

AU - Barberio, E.

AU - Bay, A.

AU - Belous, K.

AU - Bhardwaj, V.

AU - Bischofberger, M.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chao, Y.

AU - Chen, A.

AU - Cheon, B. G.

AU - Cho, I. S.

AU - Choi, Y.

AU - Dalseno, J.

AU - Dash, M.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Gabyshev, N.

AU - Goldenzweig, P.

AU - Ha, H.

AU - Horii, Y.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Kah, D. H.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kim, H. O.

AU - Kim, J. H.

AU - Kim, Y. I.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Ko, B. R.

AU - Križan, P.

AU - Krokovny, P.

AU - Kuhr, T.

AU - Kumar, R.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Kyeong, S. H.

AU - Lee, M. J.

AU - Lee, S. H.

AU - Lesiak, T.

AU - Li, J.

AU - Limosani, A.

AU - Liu, C.

AU - Liventsev, D.

AU - Louvot, R.

AU - Matyja, A.

AU - McOnie, S.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mori, T.

AU - Nagasaka, Y.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Natkaniec, Z.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ohshima, T.

AU - Okuno, S.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H. K.

AU - Park, K. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Poluektov, A.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Schümann, J.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shebalin, V.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Sokolov, A.

AU - Stanič, S.

AU - Starič, M.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Suzuki, S.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Trabelsi, K.

AU - Uehara, S.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vervink, K.

AU - Vinokurova, A.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, P.

AU - Watanabe, Y.

AU - Wicht, J.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamamoto, H.

AU - Yamashita, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zivko, T.

AU - Zupanc, A.

AU - Zyukova, O.

PY - 2010/6/28

Y1 - 2010/6/28

N2 - We present the results of a search for the radiative decay B→Kη′γ and find evidence for B +→K+η′γ decays at the 3.3 standard deviation level with a partial branching fraction of (3.6±1.2±0.4)×10-6, where the first error is statistical and the second systematic. This measurement is restricted to the region of combined Kη′ invariant mass less than 3.4GeV/c2. A 90% confidence level upper limit of 6.4×10-6 is obtained for the partial branching fraction of the decay B0→K0η ′γ in the same Kη′ invariant mass region. These results are obtained from a 605fb-1 data sample containing 657×106BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.

AB - We present the results of a search for the radiative decay B→Kη′γ and find evidence for B +→K+η′γ decays at the 3.3 standard deviation level with a partial branching fraction of (3.6±1.2±0.4)×10-6, where the first error is statistical and the second systematic. This measurement is restricted to the region of combined Kη′ invariant mass less than 3.4GeV/c2. A 90% confidence level upper limit of 6.4×10-6 is obtained for the partial branching fraction of the decay B0→K0η ′γ in the same Kη′ invariant mass region. These results are obtained from a 605fb-1 data sample containing 657×106BB̄ pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.

UR - http://www.scopus.com/inward/record.url?scp=77954398293&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954398293&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.81.111104

DO - 10.1103/PhysRevD.81.111104

M3 - Article

AN - SCOPUS:77954398293

SN - 1550-7998

VL - 81

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 11

M1 - 111104

ER -

Evidence for B→Kη′γ decays at Belle

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