Search for Decays Using an Inclusive Tagging Method at Belle II
Abstract
A search for the flavor-changing neutral-current decay B+ →K+$$ν\bar{ν}$$ is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider. The data sample corresponds to an integrated luminosity of 63 fb-1 collected at the Υ (4S) resonance and a sample of 9 fb-1 collected at an energy 60 MeV below the resonance. Because the measurable decay signature involves only a single charged kaon, a novel measurement approach is used that exploits not only the properties of the B+ →K+$$ν\bar{ν}$$ decay, but also the inclusive properties of the other B meson in the Υ(4S) $$B\bar{B}$$ event, to suppress the background from other B meson decays and light-quark pair production. This inclusive tagging approach offers a higher signal efficiency compared to previous searches. No significant signal is observed. An upper limit on the branching fraction of B+ →K+$$ν\bar{ν}$$ of 4.1 × 10-5 is set at the 90% confidence level.
- Authors:
- more »
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE
- Contributing Org.:
- Belle II Collaboration
- OSTI Identifier:
- 1827752
- Alternate Identifier(s):
- OSTI ID: 1832763
- Report Number(s):
- BNL-222430-2021-JAAM
Journal ID: ISSN 0031-9007; PRLTAO; 181802
- Grant/Contract Number:
- AC06-76RLO1830; AC06-76RL01830; SC0012704
- Resource Type:
- Published Article
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Name: Physical Review Letters Journal Volume: 127 Journal Issue: 18; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; branching fraction; flavor changing neutral currents; leptonic, semileptonic & radiative decays; rare decays; bottom quark; lepton colliders
Citation Formats
Abudinén, F., Adachi, I., Adamczyk, K., Ahlburg, P., Aihara, H., Akopov, N., Aloisio, A., Anh Ky, N., Asner, D. M., Atmacan, H., Aushev, T., Aushev, V., Baur, A., Babu, V., Baehr, S., Bambade, P., Banerjee, Sw., Bansal, S., Baudot, J., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bianchi, F., Bilka, T., Biswas, D., Bozek, A., Bračko, M., Branchini, P., Braun, N., Browder, T. E., Budano, A., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, P., Cheaib, R., Chekelian, V., Chen, C., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, K., Cho, S. -J., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Dattola, F., De La Cruz-Burelo, E., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Destefanis, M., Dey, S., De Yta-Hernandez, A., Di Canto, A., Di Capua, F., Dingfelder, J., Doležal, Z., Domínguez Jiménez, I., Dong, T. V., Dort, K., Dubey, S., Duell, S., Dujany, G., Eidelman, S., Eliachevitch, M., Epifanov, D., Ferber, T., Ferlewicz, D., Fillinger, T., Finocchiaro, G., Fiore, S., Fodor, A., Forti, F., Frey, A., Fulsom, B. G., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garmash, A., Gaur, V., Gaz, A., Gellrich, A., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Grace, P., Gradl, W., Graziani, E., Greenwald, D., Guan, Y., Gudkova, K., Hadjivasiliou, C., Halder, S., Hara, K., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Heredia de la Cruz, I., Hernández Villanueva, M., Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hsu, C. -L., Humair, T., Iijima, T., Inami, K., Inguglia, G., Irakkathil Jabbar, J., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jin, Y., Joo, C., Junkerkalefeld, H., Kaliyar, A. B., Kandra, J., Kang, K. H., Karl, R., Karyan, G., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, Y. -K., Kimmel, T. D., Kodyš, P., Koga, T., Kohani, S., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Krokovny, P., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kunigo, T., Kurz, S., Kuzmin, A., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Le Diberder, F. R., Lee, S. C., Leitl, P., Levit, D., Lewis, P. M., Li, C., Li, L. K., Li, S. X., Li, Y. B., Libby, J., Lieret, K., Liptak, Z., Liu, Q. Y., Liventsev, D., Longo, S., Lozar, A., Lueck, T., Lyu, C., Maggiora, M., Maity, S., Manfredi, R., Manoni, E., Marcello, S., Marinas, C., Martini, A., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Mizuk, R., Mohanty, G. B., Moser, H. -G., Mrvar, M., Müller, F. J., Murphy, C., Mussa, R., Nakamura, K. R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, M., Nazaryan, G., Niebuhr, C., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Pestotnik, R., Piccolo, M., Piilonen, L. E., Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, G., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Rad, N., Rados, P., Raiz, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Rodríguez Pérez, D., Roney, J. M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sato, Y., Savinov, V., Scavino, B., Schueler, J., Schwanda, C., Schwartz, A. J., Seddon, R. M., Seino, Y., Selce, A., Senyo, K., Serrano, J., Sevior, M. E., Sfienti, C., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Sobie, R. J., Soffer, A., Sokolov, A., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Sumihama, M., Sumisawa, K., Summers, D. J., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Taras, P., Tenchini, F., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Uchida, M., Unno, Y., Uno, K., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y. V., Vahsen, S. E., van Tonder, R., Varner, G. S., Varvell, K. E., Vinokurova, A., Vitale, L., Wach, B., Waheed, E., Wakeling, H. M., Wan Abdullah, W., Wang, M. -Z., Wang, X. L., Warburton, A., Watanuki, S., Webb, J., Welsch, M., Wessel, C., Wiechczynski, J., Windel, H., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yook, Y. M., Yoshihara, K., Yuan, C. Z., Yusa, Y., Zani, L., Zhilich, V., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., and Belle II Collaboration. Search for B + → K + ν ν ¯ Decays Using an Inclusive Tagging Method at Belle II. United States: N. p., 2021.
Web. doi:10.1103/PhysRevLett.127.181802.
Abudinén, F., Adachi, I., Adamczyk, K., Ahlburg, P., Aihara, H., Akopov, N., Aloisio, A., Anh Ky, N., Asner, D. M., Atmacan, H., Aushev, T., Aushev, V., Baur, A., Babu, V., Baehr, S., Bambade, P., Banerjee, Sw., Bansal, S., Baudot, J., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bianchi, F., Bilka, T., Biswas, D., Bozek, A., Bračko, M., Branchini, P., Braun, N., Browder, T. E., Budano, A., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, P., Cheaib, R., Chekelian, V., Chen, C., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, K., Cho, S. -J., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Dattola, F., De La Cruz-Burelo, E., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Destefanis, M., Dey, S., De Yta-Hernandez, A., Di Canto, A., Di Capua, F., Dingfelder, J., Doležal, Z., Domínguez Jiménez, I., Dong, T. V., Dort, K., Dubey, S., Duell, S., Dujany, G., Eidelman, S., Eliachevitch, M., Epifanov, D., Ferber, T., Ferlewicz, D., Fillinger, T., Finocchiaro, G., Fiore, S., Fodor, A., Forti, F., Frey, A., Fulsom, B. G., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garmash, A., Gaur, V., Gaz, A., Gellrich, A., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Grace, P., Gradl, W., Graziani, E., Greenwald, D., Guan, Y., Gudkova, K., Hadjivasiliou, C., Halder, S., Hara, K., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Heredia de la Cruz, I., Hernández Villanueva, M., Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hsu, C. -L., Humair, T., Iijima, T., Inami, K., Inguglia, G., Irakkathil Jabbar, J., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jin, Y., Joo, C., Junkerkalefeld, H., Kaliyar, A. B., Kandra, J., Kang, K. H., Karl, R., Karyan, G., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, Y. -K., Kimmel, T. D., Kodyš, P., Koga, T., Kohani, S., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Krokovny, P., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kunigo, T., Kurz, S., Kuzmin, A., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Le Diberder, F. R., Lee, S. C., Leitl, P., Levit, D., Lewis, P. M., Li, C., Li, L. K., Li, S. X., Li, Y. B., Libby, J., Lieret, K., Liptak, Z., Liu, Q. Y., Liventsev, D., Longo, S., Lozar, A., Lueck, T., Lyu, C., Maggiora, M., Maity, S., Manfredi, R., Manoni, E., Marcello, S., Marinas, C., Martini, A., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Mizuk, R., Mohanty, G. B., Moser, H. -G., Mrvar, M., Müller, F. J., Murphy, C., Mussa, R., Nakamura, K. R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, M., Nazaryan, G., Niebuhr, C., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Pestotnik, R., Piccolo, M., Piilonen, L. E., Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, G., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Rad, N., Rados, P., Raiz, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Rodríguez Pérez, D., Roney, J. M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sato, Y., Savinov, V., Scavino, B., Schueler, J., Schwanda, C., Schwartz, A. J., Seddon, R. M., Seino, Y., Selce, A., Senyo, K., Serrano, J., Sevior, M. E., Sfienti, C., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Sobie, R. J., Soffer, A., Sokolov, A., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Sumihama, M., Sumisawa, K., Summers, D. J., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Taras, P., Tenchini, F., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Uchida, M., Unno, Y., Uno, K., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y. V., Vahsen, S. E., van Tonder, R., Varner, G. S., Varvell, K. E., Vinokurova, A., Vitale, L., Wach, B., Waheed, E., Wakeling, H. M., Wan Abdullah, W., Wang, M. -Z., Wang, X. L., Warburton, A., Watanuki, S., Webb, J., Welsch, M., Wessel, C., Wiechczynski, J., Windel, H., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yook, Y. M., Yoshihara, K., Yuan, C. Z., Yusa, Y., Zani, L., Zhilich, V., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., & Belle II Collaboration. Search for B + → K + ν ν ¯ Decays Using an Inclusive Tagging Method at Belle II. United States. https://doi.org/10.1103/PhysRevLett.127.181802
Abudinén, F., Adachi, I., Adamczyk, K., Ahlburg, P., Aihara, H., Akopov, N., Aloisio, A., Anh Ky, N., Asner, D. M., Atmacan, H., Aushev, T., Aushev, V., Baur, A., Babu, V., Baehr, S., Bambade, P., Banerjee, Sw., Bansal, S., Baudot, J., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bianchi, F., Bilka, T., Biswas, D., Bozek, A., Bračko, M., Branchini, P., Braun, N., Browder, T. E., Budano, A., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, P., Cheaib, R., Chekelian, V., Chen, C., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, K., Cho, S. -J., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Dattola, F., De La Cruz-Burelo, E., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Destefanis, M., Dey, S., De Yta-Hernandez, A., Di Canto, A., Di Capua, F., Dingfelder, J., Doležal, Z., Domínguez Jiménez, I., Dong, T. V., Dort, K., Dubey, S., Duell, S., Dujany, G., Eidelman, S., Eliachevitch, M., Epifanov, D., Ferber, T., Ferlewicz, D., Fillinger, T., Finocchiaro, G., Fiore, S., Fodor, A., Forti, F., Frey, A., Fulsom, B. G., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garmash, A., Gaur, V., Gaz, A., Gellrich, A., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Grace, P., Gradl, W., Graziani, E., Greenwald, D., Guan, Y., Gudkova, K., Hadjivasiliou, C., Halder, S., Hara, K., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Heredia de la Cruz, I., Hernández Villanueva, M., Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hsu, C. -L., Humair, T., Iijima, T., Inami, K., Inguglia, G., Irakkathil Jabbar, J., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jin, Y., Joo, C., Junkerkalefeld, H., Kaliyar, A. B., Kandra, J., Kang, K. H., Karl, R., Karyan, G., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, Y. -K., Kimmel, T. D., Kodyš, P., Koga, T., Kohani, S., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Krokovny, P., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kunigo, T., Kurz, S., Kuzmin, A., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Le Diberder, F. R., Lee, S. C., Leitl, P., Levit, D., Lewis, P. M., Li, C., Li, L. K., Li, S. X., Li, Y. B., Libby, J., Lieret, K., Liptak, Z., Liu, Q. Y., Liventsev, D., Longo, S., Lozar, A., Lueck, T., Lyu, C., Maggiora, M., Maity, S., Manfredi, R., Manoni, E., Marcello, S., Marinas, C., Martini, A., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Mizuk, R., Mohanty, G. B., Moser, H. -G., Mrvar, M., Müller, F. J., Murphy, C., Mussa, R., Nakamura, K. R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, M., Nazaryan, G., Niebuhr, C., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Pestotnik, R., Piccolo, M., Piilonen, L. E., Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, G., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Rad, N., Rados, P., Raiz, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Rodríguez Pérez, D., Roney, J. M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sato, Y., Savinov, V., Scavino, B., Schueler, J., Schwanda, C., Schwartz, A. J., Seddon, R. M., Seino, Y., Selce, A., Senyo, K., Serrano, J., Sevior, M. E., Sfienti, C., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Sobie, R. J., Soffer, A., Sokolov, A., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Sumihama, M., Sumisawa, K., Summers, D. J., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Taras, P., Tenchini, F., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Uchida, M., Unno, Y., Uno, K., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y. V., Vahsen, S. E., van Tonder, R., Varner, G. S., Varvell, K. E., Vinokurova, A., Vitale, L., Wach, B., Waheed, E., Wakeling, H. M., Wan Abdullah, W., Wang, M. -Z., Wang, X. L., Warburton, A., Watanuki, S., Webb, J., Welsch, M., Wessel, C., Wiechczynski, J., Windel, H., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yook, Y. M., Yoshihara, K., Yuan, C. Z., Yusa, Y., Zani, L., Zhilich, V., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., and Belle II Collaboration. Wed .
"Search for B + → K + ν ν ¯ Decays Using an Inclusive Tagging Method at Belle II". United States. https://doi.org/10.1103/PhysRevLett.127.181802.
@article{osti_1827752,
title = {Search for B + → K + ν ν ¯ Decays Using an Inclusive Tagging Method at Belle II},
author = {Abudinén, F. and Adachi, I. and Adamczyk, K. and Ahlburg, P. and Aihara, H. and Akopov, N. and Aloisio, A. and Anh Ky, N. and Asner, D. M. and Atmacan, H. and Aushev, T. and Aushev, V. and Baur, A. and Babu, V. and Baehr, S. and Bambade, P. and Banerjee, Sw. and Bansal, S. and Baudot, J. and Becker, J. and Behera, P. K. and Bennett, J. V. and Bernieri, E. and Bernlochner, F. U. and Bertemes, M. and Bertholet, E. and Bessner, M. and Bettarini, S. and Bianchi, F. and Bilka, T. and Biswas, D. and Bozek, A. and Bračko, M. and Branchini, P. and Braun, N. and Browder, T. E. and Budano, A. and Bussino, S. and Campajola, M. and Cao, L. and Casarosa, G. and Cecchi, C. and Červenkov, D. and Chang, P. and Cheaib, R. and Chekelian, V. and Chen, C. and Chen, Y. -T. and Cheon, B. G. and Chilikin, K. and Chirapatpimol, K. and Cho, K. and Cho, S. -J. and Choudhury, S. and Cinabro, D. and Corona, L. and Cremaldi, L. M. and Cunliffe, S. and Czank, T. and Dattola, F. and De La Cruz-Burelo, E. and de Marino, G. and De Nardo, G. and De Nuccio, M. and De Pietro, G. and de Sangro, R. and Destefanis, M. and Dey, S. and De Yta-Hernandez, A. and Di Canto, A. and Di Capua, F. and Dingfelder, J. and Doležal, Z. and Domínguez Jiménez, I. and Dong, T. V. and Dort, K. and Dubey, S. and Duell, S. and Dujany, G. and Eidelman, S. and Eliachevitch, M. and Epifanov, D. and Ferber, T. and Ferlewicz, D. and Fillinger, T. and Finocchiaro, G. and Fiore, S. and Fodor, A. and Forti, F. and Frey, A. and Fulsom, B. G. and Gabyshev, N. and Ganiev, E. and Garcia-Hernandez, M. and Garmash, A. and Gaur, V. and Gaz, A. and Gellrich, A. and Giordano, R. and Giri, A. and Glazov, A. and Gobbo, B. and Godang, R. and Goldenzweig, P. and Golob, B. and Grace, P. and Gradl, W. and Graziani, E. and Greenwald, D. and Guan, Y. and Gudkova, K. and Hadjivasiliou, C. and Halder, S. and Hara, K. and Hartbrich, O. and Hayasaka, K. and Hayashii, H. and Hazra, S. and Hearty, C. and Heredia de la Cruz, I. and Hernández Villanueva, M. and Hershenhorn, A. and Higuchi, T. and Hill, E. C. and Hirata, H. and Hoek, M. and Hohmann, M. and Hsu, C. -L. and Humair, T. and Iijima, T. and Inami, K. and Inguglia, G. and Irakkathil Jabbar, J. and Ishikawa, A. and Itoh, R. and Iwasaki, M. and Iwasaki, Y. and Jackson, P. and Jacobs, W. W. and Jaffe, D. E. and Jin, Y. and Joo, C. and Junkerkalefeld, H. and Kaliyar, A. B. and Kandra, J. and Kang, K. H. and Karl, R. and Karyan, G. and Kawasaki, T. and Ketter, C. and Kichimi, H. and Kiesling, C. and Kim, C. -H. and Kim, D. Y. and Kim, Y. -K. and Kimmel, T. D. and Kodyš, P. and Koga, T. and Kohani, S. and Konno, T. and Korobov, A. and Korpar, S. and Kovalenko, E. and Kraetzschmar, T. M. G. and Krinner, F. and Križan, P. and Krokovny, P. and Kuhr, T. and Kumar, J. and Kumar, M. and Kumar, R. and Kumara, K. and Kunigo, T. and Kurz, S. and Kuzmin, A. and Kwon, Y. -J. and Lacaprara, S. and Lai, Y. -T. and La Licata, C. and Lanceri, L. and Lange, J. S. and Laurenza, M. and Lautenbach, K. and Le Diberder, F. R. and Lee, S. C. and Leitl, P. and Levit, D. and Lewis, P. M. and Li, C. and Li, L. K. and Li, S. X. and Li, Y. B. and Libby, J. and Lieret, K. and Liptak, Z. and Liu, Q. Y. and Liventsev, D. and Longo, S. and Lozar, A. and Lueck, T. and Lyu, C. and Maggiora, M. and Maity, S. and Manfredi, R. and Manoni, E. and Marcello, S. and Marinas, C. and Martini, A. and Masuda, M. and Matsuda, T. and Matsuoka, K. and Matvienko, D. and Meier, F. and Merola, M. and Metzner, F. and Milesi, M. and Miller, C. and Miyabayashi, K. and Miyake, H. and Mizuk, R. and Mohanty, G. B. and Moser, H. -G. and Mrvar, M. and Müller, F. J. and Murphy, C. and Mussa, R. and Nakamura, K. R. and Nakao, M. and Natkaniec, Z. and Natochii, A. and Nayak, M. and Nazaryan, G. and Niebuhr, C. and Nisar, N. K. and Nishida, S. and Nishimura, K. and Ogawa, S. and Onishchuk, Y. and Ono, H. and Onuki, Y. and Oskin, P. and Ozaki, H. and Pakhlov, P. and Pakhlova, G. and Paladino, A. and Pang, T. and Panta, A. and Paoloni, E. and Pardi, S. and Park, H. and Park, S. -H. and Paschen, B. and Passeri, A. and Pathak, A. and Patra, S. and Paul, S. and Pedlar, T. K. and Peruzzi, I. and Pestotnik, R. and Piccolo, M. and Piilonen, L. E. and Podesta-Lerma, P. L. M. and Podobnik, T. and Pokharel, S. and Polat, G. and Popov, V. and Praz, C. and Prell, S. and Prencipe, E. and Prim, M. T. and Rad, N. and Rados, P. and Raiz, S. and Remnev, M. and Ripp-Baudot, I. and Ritter, M. and Rizzo, G. and Rizzuto, L. B. and Robertson, S. H. and Rodríguez Pérez, D. and Roney, J. M. and Rostomyan, A. and Rout, N. and Russo, G. and Sahoo, D. and Sanders, D. A. and Sandilya, S. and Sangal, A. and Santelj, L. and Sato, Y. and Savinov, V. and Scavino, B. and Schueler, J. and Schwanda, C. and Schwartz, A. J. and Seddon, R. M. and Seino, Y. and Selce, A. and Senyo, K. and Serrano, J. and Sevior, M. E. and Sfienti, C. and Shiu, J. -G. and Shwartz, B. and Sibidanov, A. and Simon, F. and Sobie, R. J. and Soffer, A. and Sokolov, A. and Solovieva, E. and Spataro, S. and Spruck, B. and Starič, M. and Stefkova, S. and Stottler, Z. S. and Stroili, R. and Sumihama, M. and Sumisawa, K. and Summers, D. J. and Sutcliffe, W. and Suzuki, S. Y. and Svidras, H. and Tabata, M. and Takahashi, M. and Takizawa, M. and Tamponi, U. and Tanaka, S. and Tanida, K. and Tanigawa, H. and Taniguchi, N. and Taras, P. and Tenchini, F. and Tonelli, D. and Torassa, E. and Toutounji, N. and Trabelsi, K. and Uchida, M. and Unno, Y. and Uno, K. and Uno, S. and Urquijo, P. and Ushiroda, Y. and Usov, Y. V. and Vahsen, S. E. and van Tonder, R. and Varner, G. S. and Varvell, K. E. and Vinokurova, A. and Vitale, L. and Wach, B. and Waheed, E. and Wakeling, H. M. and Wan Abdullah, W. and Wang, M. -Z. and Wang, X. L. and Warburton, A. and Watanuki, S. and Webb, J. and Welsch, M. and Wessel, C. and Wiechczynski, J. and Windel, H. and Xu, X. P. and Yabsley, B. D. and Yamada, S. and Yan, W. and Yang, S. B. and Ye, H. and Yelton, J. and Yin, J. H. and Yook, Y. M. and Yoshihara, K. and Yuan, C. Z. and Yusa, Y. and Zani, L. and Zhilich, V. and Zhou, Q. D. and Zhou, X. Y. and Zhukova, V. I. and Belle II Collaboration},
abstractNote = {A search for the flavor-changing neutral-current decay B+ →K+$ν\bar{ν}$ is performed at the Belle II experiment at the SuperKEKB asymmetric energy electron-positron collider. The data sample corresponds to an integrated luminosity of 63 fb-1 collected at the Υ (4S) resonance and a sample of 9 fb-1 collected at an energy 60 MeV below the resonance. Because the measurable decay signature involves only a single charged kaon, a novel measurement approach is used that exploits not only the properties of the B+ →K+$ν\bar{ν}$ decay, but also the inclusive properties of the other B meson in the Υ(4S) $B\bar{B}$ event, to suppress the background from other B meson decays and light-quark pair production. This inclusive tagging approach offers a higher signal efficiency compared to previous searches. No significant signal is observed. An upper limit on the branching fraction of B+ →K+$ν\bar{ν}$ of 4.1 × 10-5 is set at the 90% confidence level.},
doi = {10.1103/PhysRevLett.127.181802},
journal = {Physical Review Letters},
number = 18,
volume = 127,
place = {United States},
year = {Wed Oct 27 00:00:00 EDT 2021},
month = {Wed Oct 27 00:00:00 EDT 2021}
}
https://doi.org/10.1103/PhysRevLett.127.181802
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