Search

Your search keyword '"Tsuboyama A"' showing total 4,376 results
Start Over Author "Tsuboyama A"
4,376 results on '"Tsuboyama A"'

4. Contrast-enhanced thin-slice abdominal CT with super-resolution deep learning reconstruction technique: evaluation of image quality and visibility of anatomical structures

Author

Nakamoto, Atsushi, Onishi, Hiromitsu, Ota, Takashi, Honda, Toru, Tsuboyama, Takahiro, Fukui, Hideyuki, Kiso, Kengo, Matsumoto, Shohei, Kaketaka, Koki, Tanigaki, Takumi, Terashima, Kei, Enchi, Yukihiro, Kawabata, Shuichi, Nakasone, Shinya, Tatsumi, Mitsuaki, and Tomiyama, Noriyuki

Published
2024
Full Text
View/download PDF

12. RFC1-related disorder presenting recurrent syncope

Author

Tsuboyama, Yoko, Takahashi, Akiko, Furukawa, Sawako, Almansour, Asem, Hamada, Masashi, Kubota, Akatsuki, Shimizu, Jun, Kinoshita, Makoto, Fujimoto, Chisato, Mitsui, Jun, Matsukawa, Takashi, Naruse, Hiroya, Ishiura, Hiroyuki, Tsuji, Shoji, and Toda, Tatsushi

Published
2024
Full Text
View/download PDF

13. Silicon Vertex Detector of the Belle II Experiment

Author

Mondal, S., Adamczyk, K., Aggarwal, L., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Batignani, G., Baudot, J., Behera, P. K., Bettarini, S., Bilka, T., Bozek, A., Buchsteiner, F., Casarosa, G., Corona, L., Das, S. B., Dujany, G., Finck, C., Forti, F., Friedl, M., Gabrielli, A., Gobbo, B., Halder, S., Hara, K., Hazra, S., Higuchi, T., Irmler, C., Ishikawa, A., Jin, Y., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kodyš, P., Kohriki, T., Kumar, R., Lalwani, K., Lautenbach, K., Leboucher, R., Lee, S. C., Libby, J., Martel, L., Massaccesi, L., Mohanty, G. B., Nakamura, K. R., Natkaniec, Z., Onuki, Y., Otani, F., PaladinoA, A., Paoloni, E., Park, H., Polat, L., Rao, K. K., Ripp-Baudot, I., Rizzo, G., Sato, Y., Schwanda, C., Serrano, J., Shimasaki, T., Suzuki, J., Tanaka, S., Tanigawa, H., Tenchini, F., Thalmeier, R., Tiwary, R., Tsuboyama, T., Uematsu, Y., Vitale, L., Wang, Z., Webb, J., Werbycka, O., Wiechczynski, J., Yin, H., and Zani, L.

Subjects
High Energy Physics - Experiment
Abstract

The silicon vertex detector (SVD) is installed at the heart of the Belle II experiment, taking data at the high-luminosity $B$-Factory SuperKEKB since 2019. The detector has shown a stable and above-99\% hit efficiency, with a large signal-to-noise in all sensors since the beginning of data taking. Cluster position and time resolution have been measured with 2020 and 2022 data and show excellent performance and stability. The effect of radiation damage is visible, but not affecting the performance. As the luminosity increases, higher machine backgrounds are expected and the excellent hit-time information in SVD can be exploited for background rejection. In particular, we have recently developed a novel procedure to select hits by grouping them event-by-event based on their time. This new procedure allows a significant reduction of the fake rate, while preserving the tracking efficiency, and it has therefore replaced the previous cut-based procedure. We have developed a method that uses the SVD hits to estimate the track time (previously unavailable) and the collision time. It has a similar precision to the estimate based on the drift chamber but its execution time is three orders of magnitude smaller, allowing a faster online reconstruction that is crucial in a high luminosity regime. The track time is a powerful information provided to analysis that allows, together with the above-mention grouping selection, to raise the occupancy limit above that expected at nominal luminosity, leaving room for a safety factor. Finally, in June 2022 the data taking of the Belle II experiment was stopped to install a new two-layer DEPFET detector (PXD) and upgrade components of the accelerator. The whole silicon tracker (PXD+SVD) has been extracted from Belle II, the new PXD installed, the detector closed and commissioned. We briefly describe the SVD results of this upgrade., Comment: 16$^{\text{th}}$ Topical Seminar on Innovative Particle and Radiation Detectors (IPRD23) 25--29 September 2023 Siena, Italy

Published
2023
Full Text
View/download PDF

14. Clinical and molecular outcomes from the 5-Year natural history study of SSADH Deficiency, a model metabolic neurodevelopmental disorder

Author

Tokatly Latzer, Itay, Roullet, Jean-Baptiste, Afshar-Saber, Wardiya, Lee, Henry H. C., Bertoldi, Mariarita, McGinty, Gabrielle E., DiBacco, Melissa L., Arning, Erland, Tsuboyama, Melissa, Rotenberg, Alexander, Opladen, Thomas, Jeltsch, Kathrin, García-Cazorla, Àngels, Juliá-Palacios, Natalia, Gibson, K. Michael, Sahin, Mustafa, and Pearl, Phillip L.

Published
2024
Full Text
View/download PDF

18. Search for lepton-flavor-violating $\tau^- \to \ell^-\phi$ decays in 2019-2021 Belle II data

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aversano, M., Babu, V., Bacher, S., Bae, H., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Borah, J., Bozek, A., Bračko, M., Branchini, P., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Cerasoli, J., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Cochran, J., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaudino, G., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Ghevondyan, G., Ghosh, D., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gong, G., Grace, P., Gradl, W., Graf-Schreiber, M., Grammatico, T., Granderath, S., Graziani, E., Greenwald, D., Gruberová, Z., Gu, T., Guan, Y., Gudkova, K., Hadjivasiliou, C., Halder, S., Han, Y., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kakuno, H., Kaleta, M., Kalita, D., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawasaki, T., Ketter, C., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, Y. -K., Kim, Y. J., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Križan, P., Krohn, J. F., Krokovny, P., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liu, Z. Q., Liventsev, D., Longo, S., Lozar, A., Lueck, T., Luo, T., Lyu, C., Ma, Y., Maggiora, M., Maharana, S. P., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A. C., Mantovano, M., Marcantonio, D., Marcello, S., Marinas, C., Martel, L., Martellini, C., Martini, A., Martinov, T., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., Maurya, S. K., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Mohanty, G. B., Molina-Gonzalez, N., Mondal, S., Moneta, S., Moon, H., Moser, H. -G., Mrvar, M., Muller, Th., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Nakazawa, Y., Charan, A. Narimani, Naruki, M., Narwal, D., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raeuber, G., Raiz, S., Morales, A. Ramirez, Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Rocchetti, P., Pérez, D. Rodríguez, Roehrken, M., Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schmitt, C., Schmitz, J., Schnepf, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Serrano, J., Sevior, M. E., Sfienti, C., Shan, W., Sharma, C., Shebalin, V., Shen, C. P., Shi, X. D., Shibuya, H., Shillington, T., Shiu, J. -G., Shtol, D., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stavroulakis, P., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Tenchini, F., Thaller, A., Tittel, O., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vismaya, V. S., Vitale, L., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakai, M., Wakeling, H. M., Wallner, S., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Wang, Z., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Werbycka, O., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xie, Y., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Yelton, J., Yin, J. H., Yook, Y. M., Yoshihara, K., Yuan, C. Z., Yusa, Y., Zani, L., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J. S., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We report a search for lepton-flavor-violating decays $\tau^- \to \ell^- \phi$ ($\ell^- =e^-,\mu^-$) at the Belle II experiment, using a sample of electron-positron data produced at the SuperKEKB collider in 2019-2021 and corresponding to an integrated luminosity of 190 fb$^{-1}$. We use a new untagged selection for $e^+e^- \to \tau^+\tau^-$ events, where the signal $\tau$ is searched for as a neutrinoless final state of a single charged lepton and a $\phi$ meson and the other $\tau$ is not reconstructed in any specific decay mode, in contrast to previous measurements by the BaBar and Belle experiments. We find no evidence for $\tau^- \to \ell^- \phi$ decays and obtain upper limits on the branching fractions at 90% confidence level of 23 $\times 10^{-8}$ and 9.7$\times 10^{-8}$ for $\tau^- \rightarrow e^-\phi$ and $\tau^- \rightarrow \mu^-\phi$, respectively

Published
2023

19. Observation of ${B\to D^{(*)} K^- K^{0}_S}$ decays using the 2019-2022 Belle II data sample

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aversano, M., Babu, V., Bacher, S., Bae, H., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Borah, J., Bozek, A., Bračko, M., Branchini, P., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Cerasoli, J., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Cochran, J., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaudino, G., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Ghevondyan, G., Ghosh, D., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gong, G., Grace, P., Gradl, W., Graf-Schreiber, M., Grammatico, T., Granderath, S., Graziani, E., Greenwald, D., Gruberová, Z., Gu, T., Guan, Y., Gudkova, K., Hadjivasiliou, C., Halder, S., Han, Y., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kakuno, H., Kaleta, M., Kalita, D., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawasaki, T., Ketter, C., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, Y. -K., Kim, Y. J., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Križan, P., Krohn, J. F., Krokovny, P., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liu, Z. Q., Liventsev, D., Longo, S., Lozar, A., Lueck, T., Luo, T., Lyu, C., Ma, Y., Maggiora, M., Maharana, S. P., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A. C., Mantovano, M., Marcantonio, D., Marcello, S., Marinas, C., Martel, L., Martellini, C., Martini, A., Martinov, T., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., Maurya, S. K., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Mohanty, G. B., Molina-Gonzalez, N., Mondal, S., Moneta, S., Moon, H., Moser, H. -G., Mrvar, M., Muller, Th., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Nakazawa, Y., Charan, A. Narimani, Naruki, M., Narwal, D., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raeuber, G., Raiz, S., Morales, A. Ramirez, Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Rocchetti, P., Pérez, D. Rodríguez, Roehrken, M., Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schmitt, C., Schmitz, J., Schnepf, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Serrano, J., Sevior, M. E., Sfienti, C., Shan, W., Sharma, C., Shebalin, V., Shen, C. P., Shi, X. D., Shibuya, H., Shillington, T., Shiu, J. -G., Shtol, D., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stavroulakis, P., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Tenchini, F., Thaller, A., Tittel, O., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vismaya, V. S., Vitale, L., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakai, M., Wakeling, H. M., Wallner, S., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Wang, Z., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Werbycka, O., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xie, Y., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Yelton, J., Yin, J. H., Yook, Y. M., Yoshihara, K., Yuan, C. Z., Yusa, Y., Zani, L., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J. S., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We present a measurement of the branching fractions of four $B^{0,-}\to D^{(*)+,0} K^- K^{0}_S$ decay modes. The measurement is based on data from SuperKEKB electron-positron collisions at the $\Upsilon(4S)$ resonance collected with the Belle II detector and corresponding to an integrated luminosity of ${362~\text{fb}^{-1}}$. The event yields are extracted from fits to the distributions of the difference between expected and observed $B$ meson energy to separate signal and background, and are efficiency-corrected as a function of the invariant mass of the $K^-K_S^0$ system. We find the branching fractions to be: \[ \text{B}(B^-\to D^0K^-K_S^0)=(1.89\pm 0.16\pm 0.10)\times 10^{-4}, \] \[ \text{B}(\overline B{}^0\to D^+K^-K_S^0)=(0.85\pm 0.11\pm 0.05)\times 10^{-4},\] \[ \text{B}(B^-\to D^{*0}K^-K_S^0)=(1.57\pm 0.27\pm 0.12)\times 10^{-4}, \] \[ \text{B}(\overline B{}^0\to D^{*+}K^-K_S^0)=(0.96\pm 0.18\pm 0.06)\times 10^{-4},\] where the first uncertainty is statistical and the second systematic. These results include the first observation of $\overline B{}^0\to D^+K^-K_S^0$, $B^-\to D^{*0}K^-K_S^0$, and $\overline B{}^0\to D^{*+}K^-K_S^0$ decays and a significant improvement in the precision of $\text{B}(B^-\to D^0K^-K_S^0)$ compared to previous measurements.

Published
2023

21. Measurement of the $B^{0} \rightarrow D^{*-} \ell^{+} \nu_{\ell}$ branching ratio and $|V_{cb}|$ with a fully reconstructed accompanying $B$ meson in 2019-2021 Belle II data

Author

Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Charan, A. Narimani, Naruki, M., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We present a measurement of the $B^{0} \rightarrow D^{*-} \ell^{+} \nu_{\ell}$ ($\ell=e,\mu$) branching ratio and of the CKM parameter $|V_{cb}|$ using signal decays accompanied by a fully reconstructed $B$ meson. The Belle II data set of electron-positron collisions at the $\Upsilon(4S)$ resonance, corresponding to 189.3$\,$fb$^{-1}$ of integrated luminosity, is analyzed. With the Caprini-Lellouch-Neubert form factor parameterization, the parameters $\eta_{\rm EW} F(1) |V_{cb}|$ and $\rho^{2}$ are extracted, where $\eta_{\rm EW}$ is an electroweak correction, $F(1)$ is a normalization factor and $\rho^{2}$ is a form factor shape parameter. We reconstruct 516 signal decays and thereby obtain $\mathcal{B} (B^{0} \rightarrow D^{*-} \ell^{+} \nu_{\ell} ) = \left(5.27 \pm 0.22~\rm{\left(stat\right)} \pm 0.38~\rm{\left(syst\right)}\right) \%$, $\eta_{EW} F(1) |V_{cb}| \times 10^{3} = 34.6 \pm 1.8~\rm{\left(stat\right)} \pm 1.7~\rm{\left(syst\right)}$, and $\rho^{2} = 0.94 \pm 0.18~\rm{\left(stat\right)} \pm 0.11~\rm{\left(syst\right)}$.

Published
2023

22. Reconstruction of $B \to \rho \ell \nu_\ell$ decays identified using hadronic decays of the recoil $B$ meson in 2019 -- 2021 Belle II data

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Borah, J., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Cerasoli, J., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gong, G., Grace, P., Gradl, W., Grammatico, T., Granderath, S., Graziani, E., Greenwald, D., Gruberová, Z., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kalita, D., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, Y. -K., Kim, Y. J., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Križan, P., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liu, Z. Q., Liventsev, D., Longo, S., Lozar, A., Lueck, T., Luo, T., Lyu, C., Ma, Y., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A. C., Marcello, S., Marinas, C., Martel, L., Martellini, C., Martini, A., Martinov, T., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., Maurya, S. K., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Nakazawa, Y., Charan, A. Narimani, Naruki, M., Narwal, D., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, J., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Roehrken, M., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schmitz, J., Schnepf, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Serrano, J., Sevior, M. E., Sfienti, C., Shan, W., Sharma, C., Shebalin, V., Shen, C. P., Shi, X. D., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shtol, D., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Tenchini, F., Thaller, A., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Vismaya, V. S., Wach, B., Waheed, E., Wakeling, H. M., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Werbycka, O., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., 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., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J. S., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We present results on the semileptonic decays $B^0 \to \rho^- \ell^+ \nu_\ell$ and $B^+ \to \rho^0 \ell^+ \nu_\ell$ in a sample corresponding to 189.9/fb of Belle II data at the SuperKEKB $e^- e^+$ collider. Signal decays are identified using full reconstruction of the recoil $B$ meson in hadronic final states. We determine the total branching fractions via fits to the distributions of the square of the "missing" mass in the event and the dipion mass in the signal candidate and find ${\mathcal{B}(B^0\to\rho^-\ell^+ \nu_\ell) = (4.12 \pm 0.64(\mathrm{stat}) \pm 1.16(\mathrm{syst})) \times 10^{-4}}$ and ${\mathcal{B}({B^+\to\rho^0\ell^+\nu_\ell}) = (1.77 \pm 0.23 (\mathrm{stat}) \pm 0.36 (\mathrm{syst})) \times 10^{-4}}$ where the dominant systematic uncertainty comes from modeling the nonresonant $B\to (\pi\pi)\ell^+\nu_\ell$ contribution.

Published
2022

23. Determination of $|V_{cb}|$ from $B\to D\ell\nu$ decays using 2019-2021 Belle II data

Author

Belle II collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Horak, P., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Charan, A. Narimani, Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., and Zhulanov, V.

Subjects
High Energy Physics - Experiment
Abstract

We present a determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element $V_{cb}$ using $B\to D\ell\nu$ decays. The result is based on $e^+e^-\to\Upsilon(4S)$ data recorded by the Belle II detector corresponding to 189.2/fb of integrated luminosity. The semileptonic decays $B^0\to D^-(\to K^+\pi^-\pi^-)\ell^+\nu_\ell$ and $B^+\to\bar D^0(\to K^+\pi^-)\ell^+\nu_\ell$ are reconstructed, where $\ell$ is either electron or a muon. The second $B$ meson in the $\Upsilon(4S)$ event is not explicitly reconstructed. Using the diamond-frame method, we determine the $B$ meson four-momentum and thus the hadronic recoil. We extract the partial decay rates as functions of $w$ and perform a fit to the decay form-factor and the CKM parameter $|V_{cb}|$ using the BGL parameterization of the form factor and lattice QCD input from the FNAL/MILC and HPQCD collaborations. We obtain $\eta_{EW}|V_{cb}|=(38.53\pm 1.15)\times 10^{-3}$, where $\eta_{EW}$ is an electroweak correction, and the error accounts for theoretical and experimental sources of uncertainty., Comment: 20 pages, 4 figures

Published
2022

24. Measurement of the photon-energy spectrum in inclusive $B\rightarrow X_{s}\gamma$ decays identified using hadronic decays of the recoil $B$ meson in 2019-2021 Belle II data

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Martinov, T., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Charan, A. Narimani, Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Röhrken, M., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Tackmann, K., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We measure the photon-energy spectrum in radiative bottom-meson ($B$) decays into inclusive final states involving a strange hadron and a photon. We use SuperKEKB electron-positron collisions corresponding to $189~\mathrm{fb}^{-1}$ of integrated luminosity collected at the $\Upsilon(4S)$ resonance by the Belle II experiment. The partner $B$ candidates are fully reconstructed using a large number of hadronic channels. The $B \rightarrow X_s \gamma$ partial branching fractions are measured as a function of photon energy in the signal $B$ meson rest frame in eight bins above $1.8~\mathrm{GeV}$. The background-subtracted signal yield for this photon energy region is $343 \pm 122$ events. Integrated branching fractions for three photon energy thresholds of $1.8~\mathrm{GeV}$, $2.0~\mathrm{GeV}$, and $2.1~\mathrm{GeV}$ are also reported, and found to be in agreement with world averages., Comment: 14 pages, 3 figures

Published
2022

25. Determination of $|V_{ub}|$ from untagged $B^0\to\pi^- \ell^+ \nu_{\ell}$ decays using 2019-2021 Belle II data

Author

Belle II Collaboration, Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Charan, A. Narimani, Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We present an analysis of the charmless semileptonic decay $B^0\to\pi^- \ell^+ \nu_{\ell}$, where $\ell = e, \mu$, from 198.0 million pairs of $B\bar{B}$ mesons recorded by the Belle II detector at the SuperKEKB electron-positron collider. The decay is reconstructed without identifying the partner $B$ meson. The partial branching fractions are measured independently for $B^0\to\pi^- e^+ \nu_{e}$ and $B^0\to\pi^- \mu^+ \nu_{\mu}$ as functions of $q^{2}$ (momentum transfer squared), using 3896 $B^0\to\pi^- e^+ \nu_{e}$ and 5466 $B^0\to\pi^- \mu^+ \nu_{\mu}$ decays. The total branching fraction is found to be $(1.426 \pm 0.056 \pm 0.125) \times 10^{-4}$ for $B^0\to\pi^- \ell^+ \nu_{\ell}$ decays, where the uncertainties are statistical and systematic, respectively. By fitting the measured partial branching fractions as functions of $q^{2}$, together with constraints on the nonperturbative hadronic contribution from lattice QCD calculations, the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element $V_{ub}$, $(3.55 \pm 0.12 \pm 0.13 \pm 0.17) \times 10^{-3}$, is extracted. Here, the first uncertainty is statistical, the second is systematic and the third is theoretical.

Published
2022

27. EEG band power and phase‐amplitude coupling in patients with Dravet syndrome

Author

Joanne C. Hall, Shahid Bashir, Melissa Tsuboyama, Raidah Al‐Bradie, Ali Mir, Mona Ali, Annapurna Poduri, and Alexander Rotenberg

Subjects
Dravet syndrome, EEG, epilepsy, SCN1A, Neurology. Diseases of the nervous system, RC346-429, Pediatrics, RJ1-570
Abstract

Abstract Objective Dravet syndrome (DS) is an epileptic encephalopathy caused by haploinsufficiency of the SCN1A gene. SCN1A gene deficiency limits the firing rates of fast‐spiking inhibitory interneurons, which should reflect in abnormal aggregate network oscillatory electroencephalography (EEG) activity that can be measured by spectral power and phase‐amplitude coupling (PAC) analysis. In this retrospective pilot study, we tested whether spectral EEG frequency band power and PAC metrics distinguish children with DS from age‐matched controls, an early step toward establishing EEG markers of target engagement by gene or drug therapy. Methods EEG data were collected from patients with DS (N = 6) and age‐matched control pediatric participants (N = 11) and analyzed for cumulative spectral power and PAC and classification capacity of these metrics, by logistic regression analysis. For this initial spectral and PAC analysis, we focused on sleep EEG, where myogenic artifact is minimal and where δ–γ and θ–γ coupling is otherwise expected to be robust. Results Cumulative δ (1–

Published
2024
Full Text
View/download PDF

28. Clinical and molecular outcomes from the 5-Year natural history study of SSADH Deficiency, a model metabolic neurodevelopmental disorder

Author

Itay Tokatly Latzer, Jean-Baptiste Roullet, Wardiya Afshar-Saber, Henry H. C. Lee, Mariarita Bertoldi, Gabrielle E. McGinty, Melissa L. DiBacco, Erland Arning, Melissa Tsuboyama, Alexander Rotenberg, Thomas Opladen, Kathrin Jeltsch, Àngels García-Cazorla, Natalia Juliá-Palacios, K. Michael Gibson, Mustafa Sahin, and Phillip L. Pearl

Subjects
Succinic semialdehyde dehydrogenase, Neurotransmitters, GABA, Development, Neurosciences. Biological psychiatry. Neuropsychiatry, RC321-571
Abstract

Abstract Background Succinic semialdehyde dehydrogenase deficiency (SSADHD) represents a model neurometabolic disease at the fulcrum of translational research within the Boston Children’s Hospital Intellectual and Developmental Disabilities Research Centers (IDDRC), including the NIH-sponsored natural history study of clinical, neurophysiological, neuroimaging, and molecular markers, patient-derived induced pluripotent stem cells (iPSC) characterization, and development of a murine model for tightly regulated, cell-specific gene therapy. Methods SSADHD subjects underwent clinical evaluations, neuropsychological assessments, biochemical quantification of γ-aminobutyrate (GABA) and related metabolites, electroencephalography (standard and high density), magnetoencephalography, transcranial magnetic stimulation, magnetic resonance imaging and spectroscopy, and genetic tests. This was parallel to laboratory molecular investigations of in vitro GABAergic neurons derived from induced human pluripotent stem cells (hiPSCs) of SSADHD subjects and biochemical analyses performed on a versatile murine model that uses an inducible and reversible rescue strategy allowing on-demand and cell-specific gene therapy. Results The 62 SSADHD subjects [53% females, median (IQR) age of 9.6 (5.4–14.5) years] included in the study had a reported symptom onset at ∼ 6 months and were diagnosed at a median age of 4 years. Language developmental delays were more prominent than motor. Autism, epilepsy, movement disorders, sleep disturbances, and various psychiatric behaviors constituted the core of the disorder’s clinical phenotype. Lower clinical severity scores, indicating worst severity, coincided with older age (R= -0.302, p = 0.03), as well as age-adjusted lower values of plasma γ-aminobutyrate (GABA) (R = 0.337, p = 0.02) and γ-hydroxybutyrate (GHB) (R = 0.360, p = 0.05). While epilepsy and psychiatric behaviors increase in severity with age, communication abilities and motor function tend to improve. iPSCs, which were differentiated into GABAergic neurons, represent the first in vitro neuronal model of SSADHD and express the neuronal marker microtubule-associated protein 2 (MAP2), as well as GABA. GABA-metabolism in induced GABAergic neurons could be reversed using CRISPR correction of the pathogenic variants or mRNA transfection and SSADHD iPSCs were associated with excessive glutamatergic activity and related synaptic excitation. Conclusions Findings from the SSADHD Natural History Study converge with iPSC and animal model work focused on a common disorder within our IDDRC, deepening our knowledge of the pathophysiology and longitudinal clinical course of a complex neurodevelopmental disorder. This further enables the identification of biomarkers and changes throughout development that will be essential for upcoming targeted trials of enzyme replacement and gene therapy.

Published
2024
Full Text
View/download PDF

29. Associations Between Lifestyle Factors and Constipation Among Survivors After the Great East Japan Earthquake: A 9-year Follow-up Study

Author

Moeka Harada, Nobuyo Tsuboyama-Kasaoka, Yuki Yonekura, Haruki Shimoda, Akira Ogawa, Seiichiro Kobayashi, Kiyomi Sakata, and Nobuo Nishi

Subjects
great east japan earthquake, constipation, lifestyle factors, dietary intake, Medicine (General), R5-920
Abstract

Background: Disaster survivors experience deterioration in lifestyles and an increase in constipation. After the Great East Japan Earthquake in 2011, some survivors were evacuated for a long term, even after moving to temporary housing and public reconstruction housing. However, annual changes in constipation and the association between lifestyles and constipation among the survivors are still unknown. Methods: Overall, 9,234 survivors aged 18 years or older participated in this 9-year follow-up survey after the disaster. Information about the prevalence of constipation and lifestyle factors (diet, physical activity, and mental health) was collected using a self-reported questionnaire. Their dietary intake was categorized into the following two dietary patterns: prudent (fish and shellfish, soybean products, vegetables, fruits, and dairy products) and meat (meat and eggs). Odds ratios for constipation according to lifestyle factors were calculated using a generalized linear mixed model. Results: In women, the prevalence of constipation was the highest at baseline (8.7%) and remained around 5% afterward. In both men and women, older age, poor mental health, and poor physical activity were significantly associated with higher odds ratios of constipation. Moreover, a lower frequency of meals and a lower prudent dietary score were significantly associated with women’s constipation. Conclusion: The prevalence of constipation was the highest at baseline and remained around 5% in women. Lifestyle factors, such as poor mental health, physical inactivity, and low frequency of meals were associated with constipation. Our findings suggest continuous support for the survivors with constipation for medium- to long-term after disasters.

Published
2024
Full Text
View/download PDF

30. Measurement of decay-time dependent $CP$ violation in $B^0 \rightarrow K^0_S K^0_S K^0_S$ using 2019--2021 Belle II data

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Charan, A. Narimani, Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We report a measurement of decay-time dependent $CP$-violating parameters in $B^0 \rightarrow K^0_S K^0_S K^0_S$ decays. We use $(198.0 \pm 3.0) \times 10^6\ B\overline{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle II detector at the SuperKEKB asymmetric-energy $e^+e^-$ collider. The observed mixing-induced and direct $CP$ violation parameters are $\mathcal{S} = -1.86\ _{-0.46}^{+0.91}~{\rm (stat)} \pm 0.09~{\rm (syst)}$ and $\mathcal{A} = -0.22\ _{-0.27}^{+0.30}~{\rm (stat)} \pm 0.04~{\rm (syst)}$, respectively., Comment: 15 pages, 4 figures; added a reference

Published
2022

31. Measurement of the branching fractions and $CP$ asymmetries of $B^+ \rightarrow \pi^+ \pi^0$ and $B^+ \rightarrow K^+ \pi^0$ decays in 2019-2021 Belle II data

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Charan, A. Narimani, Naruki, M., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We determine the branching fractions ${\mathcal{B}}$ and $CP$ asymmetries ${\mathcal{A}_{{\it CP}}}$ of the decays $B^+ \rightarrow \pi^+ \pi^0$ and $B^+ \rightarrow K^+ \pi^0$. The results are based on a data set containing 198 million bottom-antibottom meson pairs corresponding to an integrated luminosity of $190\;\text{fb}^{-1}$ recorded by the Belle II detector in energy-asymmetric electron-positron collisions at the $\Upsilon (4S)$ resonance. We measure ${\mathcal{B}(B^+ \rightarrow \pi^+ \pi^0) = (6.12 \pm 0.53 \pm 0.53)\times 10^{-6}}$, ${\mathcal{B}(B^+ \rightarrow K^+ \pi^0) = (14.30 \pm 0.69 \pm 0.79)\times 10^{-6}}$, ${\mathcal{A}_{{\it CP}}(B^+ \rightarrow \pi^+ \pi^0) = -0.085 \pm 0.085 \pm 0.019}$, and ${\mathcal{A}_{{\it CP}}(B^+ \rightarrow K^+ \pi^0) = 0.014 \pm 0.047 \pm 0.010}$, where the first uncertainties are statistical and the second are systematic. These results improve a previous Belle II measurement and agree with the world averages.

Published
2022

32. Measurement of the cluster position resolution of the Belle II Silicon Vertex Detector

Author

Leboucher, R., Adamczyk, K., Aggarwal, L., Aihara, H., Aziz, T., Bacher, S., Bahinipati, S., Batignani, G., Baudot, J., Behera, P. K., Bettarini, S., Bilka, T., Bozek, A., Buchsteiner, F., Casarosa, G., Corona, L., Czank, T., Das, S. B., Dujany, G., Finck, C., Forti, F., Friedl, M., Gabrielli, A., Ganiev, E., Gobbo, B., Halder, S., Hara, K., Hazra, S., Higuchi, T., Irmler, C., Ishikawa, A., Jeon, H. B., Jin, Y., Joo, C., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kapusta, P., Kodys, P., Kohriki, T., Kumar, M., Kumar, R., La Licata, C., Lalwani, K., Lee, S. C., Libby, J., Martel, L., Massaccesi, L., Mayekar, S. N., Mohanty, G. B., Morii, T., Nakamura, K. R., Natkaniec, Z., Onuki, Y., Ostrowicz, W., Paladino, A., Paoloni, E., Park, H., Polat, L., Rao, K. K., Ripp-Baudot, I., Rizzo, G., Sahoo, D., Schwanda, C., Serrano, J., Suzuki, J., Tanaka, S., Tanigawa, H., Thalmeier, R., Tiwary, R., Tsuboyama, T., Uematsu, Y., Verbycka, O., Vitale, L., Wan, K., Wang, Z., Webb, J., Wiechczynski, J., Yin, H., and Zani, L.

Subjects
Physics - Instrumentation and Detectors
Abstract

The Silicon Vertex Detector (SVD), with its four double-sided silicon strip sensor layers, is one of the two vertex sub-detectors of Belle II operating at SuperKEKB collider (KEK, Japan). Since 2019 and the start of the data taking, the SVD has demonstrated a reliable and highly efficient operation, even running in an environment with harsh beam backgrounds that are induced by the world's highest instantaneous luminosity. In order to provide the best quality track reconstruction with an efficient pattern recognition and track fit, and to correctly propagate the uncertainty on the hit's position to the track parameters, it is crucial to precisely estimate the resolution of the cluster position measurement. Several methods for estimating the position resolution directly from the data will be discussed., Comment: 4 pages, The 30th International Workshop on Vertex Detectors

Published
2022
Full Text
View/download PDF

33. Search for rare decays $B^{+} \to D_{s}^{(\ast)+}\eta$, $D_{s}^{(\ast)+}\bar{K}^{0}$, $D^{+}\eta$, and $D^{+}K^{0}$

Author

Belle Collaboration, Kumar, M., Bhardwaj, V., Lalwani, K., Adachi, I., Aihara, H., Asner, D. M., Aushev, T., Babu, V., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Bobrov, A., Bodrov, D., Bonvicini, G., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chang, P., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., Dash, N., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Epifanov, D., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Graziani, E., Gu, T., Guan, Y., Gudkova, K., Hadjivasiliou, C., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Ji, Q. P., Jia, S., Jin, Y., Joo, K. K., Kalita, D., Kang, K. H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kumar, R., Kumara, K., Kwon, Y. -J., Lam, T., Lange, J. S., Laurenza, M., Lee, S. C., Li, C. H., Li, J., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mrvar, M., Nakamura, I., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, S. -H., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Purohit, M. V., Rout, N., Russo, G., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Singh, J. B., Solovieva, E., Starič, M., Stottler, Z. S., Strube, J. F., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Tsuboyama, T., Uchida, M., Unno, Y., Uno, S., van Tonder, R., Varner, G., Varvell, K. E., Vinokurova, A., Waheed, E., Wang, E., Wang, M. -Z., Wang, X. L., Watanabe, M., Watanuki, S., Werbycka, O., Wiechczynski, J., Won, E., Yabsley, B. D., Yan, W., Yang, S. B., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhai, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.

Subjects
High Energy Physics - Experiment
Abstract

We present a study of rare decay modes $B^{+} \to D_{s}^{+}h^{0}$, $B^{+} \to D_{s}^{\ast+}h^{0}$, and $B^{+} \to D^{+}h^{0}$, where $h^{0}$ denotes the neutral mesons $\eta$ or $K^{0}$, using a data sample of $(772 \pm 10 ) \times 10^{6}$ $B\bar{B}$ events produced at the $\Upsilon(4S)$ resonance. The data were collected by the Belle detector operating at the asymmetric-energy KEKB collider. We observe no evidence for these decays, so we provide upper limits at the 90$\%$ confidence level on the branching fractions of $B^{+} \to D_{s}^{+}h^{0}$, $D_{s}^{\ast+}h^{0}$, and $D^{+}h^{0}$ decay modes. Along with rare decay modes, we report improved measurements of the color-suppressed decay branching fractions $\mathcal{B}(\bar{B}^{0} \to D^{0}\eta)$ = (26.6 $\pm$ 1.2 $\pm$ 2.1) $\times$ $10^{-5}$ and $\mathcal{B}(\bar{B}^{0} \to D^{0}\bar{K}^{0})$ = (5.6 $\pm$ 0.5 $\pm$ 0.2) $\times$ $10^{-5}$. The first and second uncertainties are statistical and systematic, respectively., Comment: 7 pages, 2 figures

Published
2022

34. Measurement of Branching Fraction and Longitudinal Polarization in $B^0 \to \rho^+ \rho^-$ Decays at Belle II

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Nakazawa, Y., Charan, A. Narimani, Naruki, M., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Okubo, R., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We present a measurement of the branching fraction and longitudinal polarization of $B^0 \to \rho^+ \rho^-$ decays. SuperKEKB electron-positron collision data corresponding to 189~fb$^{-1}$ of integrated luminosity and containing $198 \times 10^6 B\bar{B}$ pairs collected with the Belle II detector are used. We obtain \begin{eqnarray*} \mathcal{B}(B^0\to\rho^+\rho^-) &=& [2.67\pm0.28\,(\mathrm{stat})\,\pm0.28\,(\mathrm{syst})] \times 10^{-5}, \end{eqnarray*} \begin{eqnarray*} f_L &=& 0.956\pm0.035\,(\mathrm{stat})\,\pm 0.033\,(\mathrm{syst}), \end{eqnarray*} These results are consistent with previous measurements and can be used to constrain penguin pollution and to extract the quark-mixing angle $\phi_2$.

Published
2022

35. Measurements of the branching fraction, isospin asymmetry, and lepton-universality ratio in $B \to J/\psi K$ decays at Belle II

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adak, R., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Getzkow, D., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Hu, Y., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaegle, I., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kou, E., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Oberhof, B., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schmitt, C., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobiie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., 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., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yeo, I., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We report a study of $B \to J/\psi(\ell^{+}\ell^{-})K$ decays, where $\ell$ represents an electron or a muon, using $e^{+}e^{-}$ collisions at the $\Upsilon(4S)$ resonance. The data were collected by the Belle II experiment at the SuperKEKB asymmetric-energy collider during 2019-2021, corresponding to an integrated luminosity of $189$ fb$^{-1}$. The measured quantities are the branching fractions (${\mathcal B}$) of the decay channels $B^{+} \to J/\psi(e^{+}e^{-})K^{+}$, $B^{+} \to J/\psi(\mu^{+}\mu^{-}) K^{+}$, $B^{0} \to J/\psi(e^{+}e^{-}) K^{0}_{S}$, and $B^{0} \to J/\psi(\mu^{+}\mu^{-})K^{0}_{S}$; the lepton-flavor-dependent isospin asymmetries for the electron [$A_{I}\left(B \to J/\psi(e^{+}e^{-}) K\right)$] and muon [$A_{I}\left(B \to J/\psi(\mu^{+} \mu^{-}) K\right)$] channels; and the ratios of branching fractions between the muon and electron channels for the charged [$R_{K^{+}}\left(J/\psi\right)$] and neutral kaon [$R_{K^{0}}\left(J/\psi\right)$] case. The measurements are consistent with the world-average values.

Published
2022

36. First search for the weak radiative decays $\Lambda_c^+ \to \Sigma^+ \gamma$ and $\Xi_c^0 \to \Xi^0 \gamma$

Author

Belle Collaboration, Li, Y., Shen, C. P., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Babu, V., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Bobrov, A., Bodrov, D., Bonvicini, G., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chang, P., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., Dash, N., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Epifanov, D., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Graziani, E., Gu, T., Gudkova, K., Hadjivasiliou, C., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Ji, Q. P., Jia, S., Jin, Y., Joo, K. K., Kang, K. H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kumar, M., Kumar, R., Kumara, K., Kwon, Y. -J., Lam, T., Lange, J. S., Laurenza, M., Lee, S. C., Li, C. H., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mrvar, M., Nakamura, I., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rout, N., Russo, G., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shiu, J. -G., Singh, J. B., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Tsuboyama, T., Uchida, M., Unno, Y., Uno, S., van Tonder, R., Varner, G., Varvell, K. E., Vinokurova, A., Waheed, E., Wang, E., Wang, M. -Z., Watanabe, M., Watanuki, S., Werbycka, O., Won, E., Yabsley, B. D., Yan, W., Yang, S. B., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhai, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We present the first search for the weak radiative decays $\Lambda_c^+ \to \Sigma^+ \gamma$ and $\Xi_c^0 \to \Xi^0 \gamma$ using a data sample of 980~fb$^{-1}$ collected by the Belle detector operating at the KEKB asymmetric-energy $e^+e^-$ collider. There are no evident $\Lambda_c^+ \to \Sigma^+ \gamma$ or $\Xi_c^0 \to \Xi^0 \gamma$ signals. Taking the decays $\Lambda_c^+ \to p K^- \pi^+$ and $\Xi_c^0 \to \Xi^- \pi^+$ as normalization channels, the upper limits at 90\% credibility level on the ratios of branching fractions ${\cal B}(\Lambda_c^+ \to \Sigma^+ \gamma)/{\cal B}(\Lambda_c^+ \to p K^{-} \pi^+) < 4.0 \times 10^{-3}$ and ${\cal B}(\Xi_c^0 \to \Xi^0 \gamma)/{\cal B}(\Xi_c^0 \to \Xi^- \pi^+) < 1.2 \times 10^{-2}$ are determined. We obtain the upper limits at 90\% credibility level on the absolute branching fractions ${\cal B}(\Lambda_c^+ \to \Sigma^+ \gamma) < 2.6 \times 10^{-4}$ and ${\cal B}(\Xi_c^0 \to \Xi^0 \gamma) < 1.8 \times 10^{-4}$., Comment: 10 pages, 6 pages; accepted for publication as a Regular Article in Physical Review D

Published
2022
Full Text
View/download PDF

37. Angular analysis of $B^+ \to \rho^+\rho^0$ decays reconstructed in 2019, 2020, and 2021 Belle II data

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Charan, A. Narimani, Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We report on a Belle II measurement of the branching fraction ($\mathcal{B}$), longitudinal polarization fraction ($f_L$), and CP asymmetry ($\mathcal{A}_{CP}$) of $B^+\to \rho^+\rho^0$ decays. We reconstruct $B^+\to \rho^+(\to \pi^+\pi^0(\to \gamma\gamma))\rho^0(\to \pi^+\pi^-)$ decays in a sample of SuperKEKB electron-positron collisions collected by the Belle II experiment in 2019, 2020, and 2021 at the $\Upsilon$(4S) resonance and corresponding to 190 fb$^{-1}$ of integrated luminosity. We fit the distributions of the difference between expected and observed $B$ candidate energy, continuum-suppression discriminant, dipion masses, and decay angles of the selected samples, to determine a signal yield of $345 \pm 31$ events. The signal yields are corrected for efficiencies determined from simulation and control data samples to obtain $\mathcal{B}(B^+ \to \rho^+\rho^0) = [23.2^{+\ 2.2}_{-\ 2.1} (\rm stat) \pm 2.7 (\rm syst)]\times 10^{-6}$, $f_L = 0.943 ^{+\ 0.035}_{-\ 0.033} (\rm stat)\pm 0.027(\rm syst)$, and $\mathcal{A}_{CP}=-0.069 \pm 0.068(\rm stat) \pm 0.060 (\rm syst)$. The results agree with previous measurements. This is the first measurement of $\mathcal{A}_{CP}$ in $B^+\to \rho^+\rho^0$ decays reported by Belle II.

Published
2022

38. Evidence of a new excited charmed baryon decaying to $\Sigma_{c}(2455)^{0,++} \pi^{\pm}$

Author

Belle Collaboration, Li, Y. B., Shen, C. P., Adachi, I., Aihara, H., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Bodrov, D., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chang, P., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Epifanov, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Graziani, E., Gu, T., Guan, Y., Gudkova, K., Hadjivasiliou, C., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Ji, Q. P., Jia, S., Jin, Y., Joo, K. K., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kindo, H., Kinoshita, K., Kodyš, P., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kumar, M., Kumar, R., Kumara, K., Kwon, Y. -J., Lam, T., Lange, J. S., Laurenza, M., Lee, S. C., Li, C. H., Li, J., Li, L. K., Li, Y., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Nakamura, I., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rout, N., Russo, G., Sandilya, S., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shiu, J. -G., Singh, J. B., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Tsuboyama, T., Uchida, M., Uglov, T., Unno, Y., Uno, S., Usov, Y., van Tonder, R., Varner, G., Varvell, K. E., Waheed, E., Wang, E., Wang, M. -Z., Watanabe, M., Watanuki, S., Werbycka, O., Wiechczynski, J., Won, E., Yabsley, B. D., Yan, W., Yang, S. B., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhai, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We present the study of $\bar{B}^{0} \to \Sigma_{c}(2455)^{0,++} \pi^{\pm} \bar{p}$ decays based on $772\times 10^{6}$ $B\bar{B}$ events collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The $\Sigma_{c}(2455)^{0,++} $ candidates are reconstructed via their decay to $\Lambda_{c}^{+} \pi^{\mp}$ and $\Lambda_{c}^{+}$ decays to $pK^{-}\pi^{+},~pK_{S}^{0},$ and $\Lambda\pi^{+}$ final states. The corresponding branching fractions are measured to be ${\cal B}(\bar{B}^{0} \to \Sigma_{c}(2455)^{0} \pi^{+} \bar{p}) = (1.09 \pm 0.06 \pm 0.07)\times10^{-4}$ and ${\cal B}(\bar{B}^{0} \to \Sigma_{c}(2455)^{++} \pi^{-} \bar{p}) = (1.84\pm 0.11 \pm 0.12)\times 10^{-4}$, which are consistent with the world average values with improved precision. A new structure is found in the $M_{\Sigma_{c}(2455)^{0,++}\pi^{\pm}}$ spectrum with a significance of $4.2\sigma$ including systematic uncertainty. The structure is possibly an excited $\Lambda_{c}^{+}$ and is tentatively named $\Lambda_{c}(2910)^{+}$. Its mass and width are measured to be $(2913.8 \pm 5.6 \pm 3.8)$ MeV/$c^{2}$ and $(51.8\pm20.0 \pm 18.8)$ MeV, respectively. The products of branching fractions for the $\Lambda_{c}(2910)^{+}$ are measured to be ${\cal B}(\bar{B}^{0} \to \Lambda_{c}(2910)^{+}\bar{p})\times{\cal B}(\Lambda_{c}(2910)^{+} \to \Sigma_{c}(2455)^{0}\pi^{+}) = (9.5 \pm 3.6 \pm 1.6)\times 10^{-6}$ and ${\cal B}(\bar{B}^{0} \to \Lambda_{c} (2910)^{+}\bar{p})\times {\cal B}(\Lambda_{c}(2910)^{+} \to \Sigma_{c}(2455)^{++}\pi^{-}) = (1.24 \pm 0.35 \pm 0.10)\times 10^{-5}$. Here, the first and second uncertainties are statistical and systematic, respectively., Comment: 7 pages, 3 figures, 1 table; accepted for publication as a Letter in Physical Review Letters

Published
2022
Full Text
View/download PDF

39. Measurement of the branching fraction of the $B^0 \to K_S^0 \pi^0 \gamma$ decay using 190 fb$^{-1}$ of Belle II data

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Charan, A. Narimani, Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We report the measurement of the branching fraction of the $B^0 \to K_S^0 \pi^0 \gamma$ decay in $e^+ e^- \to \Upsilon(4S) \to B \overline{B}$ data recorded by the Belle II experiment at the SuperKEKB asymmetric-energy collider and corresponding to 190 fb$^{-1}$ of integrated luminosity. The signal yield is measured to be $121\pm 29\,\hbox{(stat.)}$, leading to the branching fraction ${\cal B}\left(B^0 \to K_S^0 \pi^0 \gamma\right) = \left(7.3 \pm 1.8\,\hbox{(stat.)} \pm 1.0\,\hbox{(syst.)} \right)\times 10^{-6}$, which agrees with the known value., Comment: 10 pages, 3 figures

Published
2022

40. Study of Exclusive $B \to \pi e^+ \nu_e$ Decays with Hadronic Full-event-interpretation Tagging in 189.3 fb$^{-1}$ of Belle II Data

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Ghevondyan, G., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kang, S., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Manthei, A., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Charan, A. Narimani, Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sue, Y., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We present a reconstruction of the semileptonic decays $B^0 \to \pi^- e^+ \nu_e$ and $B^+ \to \pi^0 e^+ \nu_e$ in a sample corresponding to 189.3 fb$^{-1}$ of Belle II data, using events where the partner $B$-meson is reconstructed from a large variety of hadronic channels via a tagging algorithm known as the full-event-interpretation. We determine the partial branching fractions in three bins of the squared momentum transfer to the leptonic system using fits to the distribution of the square of the missing mass. The partial branching fractions are summed to determine $\mathcal{B}(B^0 \to \pi^- e^+ \nu_e)$ = (1.43 $\pm$ 0.27(stat) $\pm$ 0.07(syst)) $\times 10^{-4}$ and $\mathcal{B}(B^+ \to \pi^0 e^+ \nu_e)$ = (8.33 $\pm$ 1.67(stat) $\pm$ 0.55(syst)) $\times 10^{-5}$. We extract a first Belle II measurement of the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{\mathrm{ub}}|$, with $|V_{\mathrm{ub}}|$ = (3.88 $\pm$ 0.45) $\times 10^{-3}$., Comment: arXiv admin note: substantial text overlap with arXiv:2111.00710, arXiv:2008.08819

Published
2022

41. First decay-time-dependent analysis of $B^{0} \to K_{S}^{0} \pi^{0}$ at Belle II

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adak, R., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., Cunliffe, S., Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Getzkow, D., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Hu, Y., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaegle, I., Jaffe, D. E., Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Oberhof, B., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schmitt, C., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., Sfienti, C., Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., Soffer, A., Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., 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., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yeo, I., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We report measurements of the branching fraction ($\mathcal{B}$) and direct $CP$-violating asymmetry ($A_{CP}$) of the charmless decay $B^{0} \to K^0 \pi^0$ at Belle II. A sample of $e^{+} e^{-}$ collisions, corresponding to $189.8 fb^{-1}$ of integrated luminosity, recorded at the $\Upsilon(4S)$ resonance is used for the first decay-time-dependent analysis of these decays within the experiment. We reconstruct about 135 signal candidates, and measure $\mathcal{B}(B^{0} \to K^{0} \pi^{0})= [11.0 \pm 1.2 (stat) \pm 1.0 (syst)] \times 10^{-6}$ and $A_{CP} (B^{0} \to K^{0} \pi^{0})= -0.41_{-0.32}^{+0.30} (stat) \pm 0.09 (syst)$.

Published
2022

42. Measurement of the branching fraction for the decay $B \to K^{\ast}(892)\ell^+\ell^-$ at Belle II

Author

Belle II Collaboration, Abudinén, F., Adachi, I., Adak, R., Adamczyk, K., Aggarwal, L., Ahlburg, P., Ahmed, H., Ahn, J. K., Aihara, H., Akopov, N., Aloisio, A., Ameli, F., Andricek, L., Ky, N. Anh, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Aushev, V., Aziz, T., Babu, V., Bacher, S., Bae, H., Baehr, S., Bahinipati, S., Bakich, A. M., Bambade, P., Banerjee, Sw., Bansal, S., Barrett, M., Batignani, G., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Beaulieu, A., Becker, J., Behera, P. K., Bennett, J. V., Bernieri, E., Bernlochner, F. U., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhardwaj, V., Bhuyan, B., Bianchi, F., Bilka, T., Bilokin, S., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Branchini, P., Braun, N., Briere, R. A., Browder, T. E., Brown, D. N., Budano, A., Burmistrov, L., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Červenkov, D., Chang, M. -C., Chang, P., Cheaib, R., Cheema, P., Chekelian, V., Chen, C., Chen, Y. Q., Chen, Y. -T., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Cho, S. -J., Choi, S. -K., Choudhury, S., Cinabro, D., Corona, L., Cremaldi, L. M., e, S. Cunli, Czank, T., Das, S., Dash, N., Dattola, F., De La Cruz-Burelo, E., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Deschamps, B., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Di Carlo, S., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Duell, S., Dujany, G., Ecker, P., Eidelman, S., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fischer, P., Flood, K., Fodor, A., Forti, F., Frey, A., Friedl, M., Fulsom, B. G., Gabriel, M., Gabrielli, A., Gabyshev, N., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaur, V., Gaz, A., Gebauer, U., Gellrich, A., Gemmler, J., Geßler, T., Getzkow, D., Giakoustidis, G., Giordano, R., Giri, A., Glazov, A., Gobbo, B., Godang, R., Goldenzweig, P., Golob, B., Gomis, P., Gong, G., Grace, P., Gradl, W., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, K., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hirata, H., Hoek, M., Hohmann, M., Hollitt, S., Hotta, T., Hsu, C. -L., Hu, Y., Huang, K., Humair, T., Iijima, T., Inami, K., Inguglia, G., Ipsita, N., Jabbar, J. Irakkathil, Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jackson, P., Jacobs, W. W., Jaegle, I., e, D. E. Ja, Jang, E. -J., Jeandron, M., Jeon, H. B., Ji, Q. P., Jia, S., Jin, Y., Joo, C., Joo, K. K., Junkerkalefeld, H., Kadenko, I., Kahn, J., Kakuno, H., Kaleta, M., Kaliyar, A. B., Kandra, J., Kang, K. H., Kapusta, P., Karl, R., Karyan, G., Kato, Y., Kawai, H., Kawasaki, T., Ketter, C., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. -H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, K., Kim, S. -H., Kim, Y. -K., Kim, Y., Kimmel, T. D., Kindo, H., Kinoshita, K., Kleinwort, C., Knysh, B., Kodyš, P., Koga, T., Kohani, S., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalchuk, N., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Krinner, F., Križan, P., Kroeger, R., Krohn, J. F., Krokovny, P., Krüger, H., Kuehn, W., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kunigo, T., Künzel, M., Kurz, S., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lalwani, K., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Lautenbach, K., Laycock, P. J., Leboucher, R., Diberder, F. R. Le, Lee, I. -S., 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., Lin, J., Liptak, Z., Liu, Q. Y., Liu, Z. A., Liventsev, D., Longo, S., Loos, A., Lozar, A., Lu, P., Lueck, T., Luetticke, F., Luo, T., Lyu, C., MacQueen, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Marcello, S., Marinas, C., Martel, L., Martini, A., Massaccesi, L., Masuda, M., Matsuda, T., Matsuoka, K., Matvienko, D., McKenna, J. A., McNeil, J., Meggendorfer, F., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Azmi, K., Mohanty, G. B., Molina-Gonzalez, N., Moneta, S., Moon, H., Moon, T., Grimaldo, J. A. Mora, Morii, T., Moser, H. -G., Mrvar, M., Müller, F. J., Muller, Th., Muroyama, G., Murphy, C., Mussa, R., Nakamura, I., Nakamura, K. R., Nakano, E., Nakao, M., Nakayama, H., Nakazawa, H., Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Neverov, D., Niebuhr, C., Niiyama, M., Ninkovic, J., Nisar, N. K., Nishida, S., Nishimura, K., Nouxman, M. H. A., Oberhof, B., Ogawa, K., Ogawa, S., Olsen, S. L., Onishchuk, Y., Ono, H., Onuki, Y., Oskin, P., Otani, F., Oxford, E. R., Ozaki, H., Pakhlov, P., Pakhlova, G., Paladino, A., Pang, T., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Pathak, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Angioni, G. Pinna, Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Polat, L., Popov, V., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purohit, M. V., Purwar, H., Rad, N., Rados, P., Raiz, S., Morales, A. Ramirez, Rasheed, R., Rauls, N., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Ritter, M., Ritzert, M., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Pérez, D. Rodríguez, Roney, J. M., Rosenfeld, C., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sanders, D. A., Sandilya, S., Sangal, A., Santelj, L., Sartori, P., Sato, Y., Savinov, V., Scavino, B., Schmitt, C., Schnepf, M., Schram, M., Schreeck, H., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Schwickardi, M., Seino, Y., Selce, A., Senyo, K., Seong, I. S., Serrano, J., Sevior, M. E., enti, C. S, Shebalin, V., Shen, C. P., Shibuya, H., Shillington, T., Shimasaki, T., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Skambraks, S., Skorupa, J., Smith, K., Sobie, R. J., er, A. So, Sokolov, A., Soloviev, Y., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Stypula, J., Sugiura, R., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Summers, D. J., e, W. Sutcli, Suzuki, S. Y., Svidras, H., Tabata, M., Takahashi, M., Takizawa, M., Tamponi, U., Tanaka, S., Tanida, K., Tanigawa, H., Taniguchi, N., Tao, Y., Taras, P., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Tsuboyama, T., Tsuzuki, N., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Ueno, T., Uglov, T., Unger, K., 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., Vobbilisetti, V., Vorobyev, V., Vossen, A., Wach, B., Waheed, E., Wakeling, H. M., Wan, K., Abdullah, W. Wan, Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanabe, M., Watanuki, S., Webb, J., Wehle, S., Welsch, M., Wessel, C., Wiechczynski, J., Wieduwilt, P., Windel, H., Won, E., Wu, L. J., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yeo, I., Yin, J. H., Yonenaga, M., Yook, Y. M., Yoshihara, K., Yoshinobu, T., Yuan, C. Z., Yusa, Y., Zani, L., Zhai, Y., Zhang, J. Z., Zhang, Y., Zhang, Z., Zhilich, V., Zhou, J., Zhou, Q. D., Zhou, X. Y., Zhukova, V. I., Zhulanov, V., and Žlebčík, R.

Subjects
High Energy Physics - Experiment
Abstract

We report a measurement of the branching fraction of $B \to K^{\ast}(892)\ell^+\ell^-$ decays, where $\ell^+\ell^- = \mu^+\mu^-$ or $e^+e^-$, using electron-positron collisions recorded at an energy at or near the $\Upsilon(4S)$ mass and corresponding to an integrated luminosity of $189$ fb$^{-1}$. The data was collected during 2019--2021 by the Belle II experiment at the SuperKEKB $e^{+}e^{-}$ asymmetric-energy collider. We reconstruct $K^{\ast}(892)$ candidates in the $K^+\pi^-$, $K_{S}^{0}\pi^+$, and $K^+\pi^0$ final states. The signal yields with statistical uncertainties are $22\pm 6$, $18 \pm 6$, and $38 \pm 9$ for the decays $B \to K^{\ast}(892)\mu^+\mu^-$, $B \to K^{\ast}(892)e^+e^-$, and $B \to K^{\ast}(892)\ell^+\ell^-$, respectively. We measure the branching fractions of these decays for the entire range of the dilepton mass, excluding the very low mass region to suppress the $B \to K^{\ast}(892)\gamma(\to e^+e^-)$ background and regions compatible with decays of charmonium resonances, to be \begin{equation} {\cal B}(B \to K^{\ast}(892)\mu^+\mu^-) = (1.19 \pm 0.31 ^{+0.08}_{-0.07}) \times 10^{-6}, {\cal B}(B \to K^{\ast}(892)e^+e^-) = (1.42 \pm 0.48 \pm 0.09)\times 10^{-6}, {\cal B}(B \to K^{\ast}(892)\ell^+\ell^-) = (1.25 \pm 0.30 ^{+0.08}_{-0.07}) \times 10^{-6}, \end{equation} where the first and second uncertainties are statistical and systematic, respectively. These results, limited by sample size, are the first measurements of $B \to K^{\ast}(892)\ell^+\ell^-$ branching fractions from the Belle II experiment.

Published
2022

43. Precision beam telescope based on SOI pixel sensor technology for electrons in the energy range of sub-GeV to GeV

Author

Suzuki, Hisanori, Omori, Takumi, Hara, Kazuhiko, Yamauchi, Hiroki, Yamada, Miho, Tsuboyama, Toru, and Takeda, Ayaki

Subjects
Physics - Instrumentation and Detectors
Abstract

We developed a beam telescope system comprising five layers of 300-$\mu$m-thick INTPIX4NA monolithic pixel sensors with each pixel size of 17 $\mu$m square. The sensors were fabricated using silicon-on-insulator (SOI) technology. The signal-to-noise ratio of 140--230 is realized at a bias voltage of 20~V. The tracker system was tested using a positron beam of 200--822 MeV/c, and various tracking methods are examined to optimize spatial precision achievable at these energies. The best tracking precision including the precision of the sensor under test itself is 11.04 $\pm$ 0.10 $\mu$m for 822-MeV/c positrons for an equidistant sensor spacing of 32 mm. The achieved precision results combined with the intrinsic spatial resolution value obtained for a similar system using 120 GeV protons are used to estimate the tracking performance of electrons in the GeV energy range; a tracking precision of 2.22 $\mu$m is evaluated for 5-GeV electrons. The method to estimate the tracking performance is verified using a Geant4-based simulation. The developed high precision tracker system enables to map the detailed performance of the sensors with pixel sizes of $\mathcal{O}$(10 $\mu$m), therefore will be a powerful system for development of devices targeting precision position resolutions., Comment: 13 figures and 4 tables

Published
2022

48. Operational experience and performance of the Belle II silicon vertex detector after the first SuperKEKB long shutdown

Author

Otani, F., Adamczyk, K., Aihara, H., Bacher, S., Bahinipati, S., Baudot, J., Behera, P.K., Bettarini, S., Bilka, T., Bozek, A., Buchsteiner, F., Casarosa, G., Corona, L., Das, S.B., Dujany, G., Finck, C., Forti, F., Friedl, M., Gabrielli, A., Gobbo, B., Halder, S., Hara, K., Hazra, S., Higuchi, T., Irmler, C., Ishikawa, A., Kaleta, M., Kaliyar, A.B., Kang, K.H., Kohriki, T., Kumar, R., Lalwani, K., Lautenbach, K., Leboucher, R., Libby, J., Martel, L., Massaccesi, L., Mohanty, G.B., Mondal, S., Nakamura, K.R., Natkaniec, Z., Onuki, Y., Paladino, A., Paoloni, E., Rao, K.K., Ravindran, K., Ripp-Baudot, I., Rizzo, G., Sato, Y., Schwanda, C., Serrano, J., Shimasaki, T., Suzuki, J., Tanaka, S., Tenchini, F., Thalmeier, R., Tiwary, R., Tsuboyama, T., Uematsu, Y., Vitale, L., Wang, Z., Wiechczynski, J., Yin, H., Zani, L., and Zeng, F.

Published
2024
Full Text
View/download PDF

49. A SWI/SNF-dependent transcriptional regulation mediated by POU2AF2/C11orf53 at enhancer

Author

Aileen Szczepanski, Natsumi Tsuboyama, Huijue Lyu, Ping Wang, Oguzhan Beytullahoglu, Te Zhang, Benjamin David Singer, Feng Yue, Zibo Zhao, and Lu Wang

Subjects
Science
Abstract

Abstract Recent studies have identified a previously uncharacterized protein C11orf53 (now named POU2AF2/OCA-T1), which functions as a robust co-activator of POU2F3, the master transcription factor which is critical for both normal and neoplastic tuft cell identity and viability. Here, we demonstrate that POU2AF2 dictates opposing transcriptional regulation at distal enhance elements. Loss of POU2AF2 leads to an inhibition of active enhancer nearby genes, such as tuft cell identity genes, and a derepression of Polycomb-dependent poised enhancer nearby genes, which are critical for cell viability and differentiation. Mechanistically, depletion of POU2AF2 results in a global redistribution of the chromatin occupancy of the SWI/SNF complex, leading to a significant 3D genome structure change and a subsequent transcriptional reprogramming. Our genome-wide CRISPR screen further demonstrates that POU2AF2 depletion or SWI/SNF inhibition leads to a PTEN-dependent cell growth defect, highlighting a potential role of POU2AF2-SWI/SNF axis in small cell lung cancer (SCLC) pathogenesis. Additionally, pharmacological inhibition of SWI/SNF phenocopies POU2AF2 depletion in terms of gene expression alteration and cell viability decrease in SCLC-P subtype cells. Therefore, impeding POU2AF2-mediated transcriptional regulation represents a potential therapeutic approach for human SCLC therapy.

Published
2024
Full Text
View/download PDF

50. Growth control of Marchantia polymorpha gemmae using nonthermal plasma irradiation

Author

Shoko Tsuboyama, Takamasa Okumura, Pankaj Attri, Kazunori Koga, Masaharu Shiratani, and Kazuyuki Kuchitsu

Subjects
Medicine, Science
Abstract

Abstract Several studies have documented that treatment by cold atmospheric pressure plasma (CAPP) on plants foster seed germination and growth in recent years. However, the molecular processes that underlie the action of CAPP on the seeds and plants remain mostly enigmatic. We here introduce gemmae of Marchantia polymorpha, a basal liverwort, as a novel model plant material suitable for CAPP research. Treating the gemmae with CAPP for a constant time interval at low power resulted in consistent growth enhancement, while growth inhibition at higher power in a dose-dependent manner. These results distinctly demonstrate that CAPP irradiation can positively and negatively regulate plant growth depending on the plasma intensity of irradiation, offering a suitable experimental system for understanding the molecular mechanisms underlying the action of CAPP in plants.

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results