Search for B–→μ–ν¯μ Decays at the Belle Experiment

doi:10.1103/PHYSREVLETT.121.031801

Title: Search for $B^{-} \to μ^{-} {\bar{ν}}_{μ}$ Decays at the Belle Experiment

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Abstract

Here, we report the results of a search for the rare, purely leptonic decay B ^–→μ ^–¯νμ performed with a 711 fb ^–1 data sample that contains 772 × 10 ⁶ B¯B pairs, collected near the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e ⁺e ^– collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B ^–→μ ^–¯νμ) = (6.46 ± 2.22 ± 1.60) × 10 ^–7 or a frequentist 90% confidence level interval on the B ^–→μ ^–¯νμ branching fraction of [2.9,10.7] × 10 ^–7.

Authors:: Sibidanov, A.; Varvell, K. E.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Aushev, T.; Ayad, R.; Babu, V.; Badhrees, I.; Bahinipati, S.; Bakich, A. M.; Bansal, V.; Barberio, E.; Behera, P.; Bhuyan, B.; Biswal, J.; Bozek, A.; Bračko, M.; Browder, T. E. more »« less

Publication Date:: 2018-07-18

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

Contributing Org.:: The Belle Collaboration

OSTI Identifier:: 1460880

Alternate Identifier(s):: OSTI ID: 1463344

Grant/Contract Number:: AC05-76RL01830; DP180102629; DP170102389; DP170102204; DP150103061; FT130100303; P 26794-N20; 11435013; 11475187; 11521505; 11575017; 11675166; 11705209; QYZDJ-SSW-SLH011; LTT17020; 2014R1A2A2A01005286; 2015R1A2A2A01003280; 2015H1A2A1033649; 2016R1D1A1B01010135; 2016K1A3A7A09005603; 2016R1D1A1B02012900; JIH5913023; IDH5913011/003; JIH5913024; IDH5913011/002; IT956-16

Resource Type:: Published Article

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 121; Journal Issue: 3; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Sibidanov, A., Varvell, K. E., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bansal, V., Barberio, E., Behera, P., Bhuyan, B., Biswal, J., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Czank, T., Dash, N., Di Carlo, S., Doležal, Z., Drásal, Z., Dutta, D., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Goldenzweig, P., Greenwald, D., Guan, Y., Guido, E., Haba, J., Hayasaka, K., Hayashii, H., Hedges, M. T., Hirose, S., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jin, Y., Joo, K. K., Julius, T., Kahn, J., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, S. H., Kim, Y. J., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, I. S., Li, C. H., Li, L., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Ono, H., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. -S., Park, C. W., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Ritter, M., Rostomyan, A., Rozanska, M., Sakai, Y., Salehi, M., Sandilya, S., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Stypula, J., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Van Hulse, C., Varner, G., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Widmann, E., Won, E., Yamashita, Y., Ye, H., Yelton, J., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A. Search for B–→μ–ν¯μ Decays at the Belle Experiment.  United States: N. p., 2018. 
        Web.  doi:10.1103/PHYSREVLETT.121.031801.

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                    Sibidanov, A., Varvell, K. E., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bansal, V., Barberio, E., Behera, P., Bhuyan, B., Biswal, J., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Czank, T., Dash, N., Di Carlo, S., Doležal, Z., Drásal, Z., Dutta, D., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Goldenzweig, P., Greenwald, D., Guan, Y., Guido, E., Haba, J., Hayasaka, K., Hayashii, H., Hedges, M. T., Hirose, S., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jin, Y., Joo, K. K., Julius, T., Kahn, J., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, S. H., Kim, Y. J., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, I. S., Li, C. H., Li, L., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Ono, H., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. -S., Park, C. W., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Ritter, M., Rostomyan, A., Rozanska, M., Sakai, Y., Salehi, M., Sandilya, S., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Stypula, J., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Van Hulse, C., Varner, G., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Widmann, E., Won, E., Yamashita, Y., Ye, H., Yelton, J., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., & Zupanc, A. Search for B–→μ–ν¯μ Decays at the Belle Experiment.  United States.  doi:10.1103/PHYSREVLETT.121.031801.

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                    Sibidanov, A., Varvell, K. E., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bansal, V., Barberio, E., Behera, P., Bhuyan, B., Biswal, J., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Czank, T., Dash, N., Di Carlo, S., Doležal, Z., Drásal, Z., Dutta, D., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Goldenzweig, P., Greenwald, D., Guan, Y., Guido, E., Haba, J., Hayasaka, K., Hayashii, H., Hedges, M. T., Hirose, S., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jin, Y., Joo, K. K., Julius, T., Kahn, J., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, S. H., Kim, Y. J., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, I. S., Li, C. H., Li, L., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Ono, H., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. -S., Park, C. W., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Ritter, M., Rostomyan, A., Rozanska, M., Sakai, Y., Salehi, M., Sandilya, S., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Stypula, J., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Van Hulse, C., Varner, G., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Widmann, E., Won, E., Yamashita, Y., Ye, H., Yelton, J., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A. Wed .  
        "Search for B–→μ–ν¯μ Decays at the Belle Experiment".  United States.  doi:10.1103/PHYSREVLETT.121.031801.

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@article{osti_1460880,

  title        = {Search for B–→μ–ν¯μ Decays at the Belle Experiment},

  author       = {Sibidanov, A. and Varvell, K. E. and Adachi, I. and Aihara, H. and Al Said, S. and Asner, D. M. and Aushev, T. and Ayad, R. and Babu, V. and Badhrees, I. and Bahinipati, S. and Bakich, A. M. and Bansal, V. and Barberio, E. and Behera, P. and Bhuyan, B. and Biswal, J. and Bozek, A. and Bračko, M. and Browder, T. E. and Červenkov, D. and Chang, P. and Chekelian, V. and Chen, A. and Cheon, B. G. and Chilikin, K. and Cho, K. and Choi, S. -K. and Choi, Y. and Cinabro, D. and Czank, T. and Dash, N. and Di Carlo, S. and Doležal, Z. and Drásal, Z. and Dutta, D. and Eidelman, S. and Epifanov, D. and Fast, J. E. and Ferber, T. and Fulsom, B. G. and Gaur, V. and Gabyshev, N. and Garmash, A. and Goldenzweig, P. and Greenwald, D. and Guan, Y. and Guido, E. and Haba, J. and Hayasaka, K. and Hayashii, H. and Hedges, M. T. and Hirose, S. and Hou, W. -S. and Hsu, C. -L. and Iijima, T. and Inami, K. and Inguglia, G. and Ishikawa, A. and Itoh, R. and Iwasaki, M. and Iwasaki, Y. and Jacobs, W. W. and Jaegle, I. and Jeon, H. B. and Jin, Y. and Joo, K. K. and Julius, T. and Kahn, J. and Kaliyar, A. B. and Kang, K. H. and Karyan, G. and Kawasaki, T. and Kiesling, C. and Kim, D. Y. and Kim, J. B. and Kim, S. H. and Kim, Y. J. and Kinoshita, K. and Kodyš, P. and Korpar, S. and Kotchetkov, D. and Križan, P. and Krokovny, P. and Kuhr, T. and Kulasiri, R. and Kumar, R. and Kuzmin, A. and Kwon, Y. -J. and Lange, J. S. and Lee, I. S. and Li, C. H. and Li, L. and Li Gioi, L. and Libby, J. and Liventsev, D. and Lubej, M. and Luo, T. and Masuda, M. and Matsuda, T. and Merola, M. and Miyabayashi, K. and Miyata, H. and Mizuk, R. and Mohanty, G. B. and Moon, H. K. and Mori, T. and Mussa, R. and Nakano, E. and Nakao, M. and Nanut, T. and Nath, K. J. and Natkaniec, Z. and Nayak, M. and Niiyama, M. and Nisar, N. K. and Nishida, S. and Ogawa, S. and Okuno, S. and Ono, H. and Pakhlov, P. and Pakhlova, G. and Pal, B. and Park, C. -S. and Park, C. W. and Park, H. and Paul, S. and Pedlar, T. K. and Pestotnik, R. and Piilonen, L. E. and Ritter, M. and Rostomyan, A. and Rozanska, M. and Sakai, Y. and Salehi, M. and Sandilya, S. and Sato, Y. and Savinov, V. and Schneider, O. and Schnell, G. and Schwanda, C. and Seino, Y. and Senyo, K. and Sevior, M. E. and Shebalin, V. and Shen, C. P. and Shibata, T. -A. and Shiu, J. -G. and Simon, F. and Sokolov, A. and Solovieva, E. and Starič, M. and Strube, J. F. and Stypula, J. and Sumihama, M. and Sumisawa, K. and Sumiyoshi, T. and Takizawa, M. and Tamponi, U. and Tanida, K. and Tenchini, F. and Trabelsi, K. and Uchida, M. and Uehara, S. and Uglov, T. and Unno, Y. and Uno, S. and Urquijo, P. and Van Hulse, C. and Varner, G. and Vorobyev, V. and Wang, C. H. and Wang, M. -Z. and Wang, P. and Watanabe, M. and Watanuki, S. and Widmann, E. and Won, E. and Yamashita, Y. and Ye, H. and Yelton, J. and Yuan, C. Z. and Yusa, Y. and Zhang, Z. P. and Zhilich, V. and Zhukova, V. and Zhulanov, V. and Zupanc, A.},

  abstractNote = {Here, we report the results of a search for the rare, purely leptonic decay B–→μ–¯νμ performed with a 711 fb–1 data sample that contains 772 × 106 B¯B pairs, collected near the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e– collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B–→μ–¯νμ) = (6.46 ± 2.22 ± 1.60) × 10–7 or a frequentist 90% confidence level interval on the B–→μ–¯νμ branching fraction of [2.9,10.7] × 10–7.},

  doi          = {10.1103/PHYSREVLETT.121.031801},

  journal      = {Physical Review Letters},

  number       = 3,

  volume       = 121,

  place        = {United States},

  year         = {2018},

  month        = {7}

}

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DOI: 10.1103/PHYSREVLETT.121.031801

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Title: Search for B – → μ – ν ¯ μ Decays at the Belle Experiment

Abstract

Citation Formats

Title: Search for $B^{-} \to μ^{-} {\bar{ν}}_{μ}$ Decays at the Belle Experiment