Author: "MacNaughton J" - Searchworks@Jio Institute Digital Library Search Results

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2,876 results on '"MacNaughton J"'

1. Search for the decay $B_s^0\rightarrow\eta\eta$

Author: Belle Collaboration, Bhuyan, B., Nath, K. J., Borah, J., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Behera, P., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Capua, F., Di Carlo, S., Doležal, Z., Dong, T. V., Dubey, S., Eidelman, S., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Haba, J., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Lu, P. -C., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Mussa, R., Nakano, T., Nakao, M., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Pardi, S., Park, H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shiu, J. -G., Solovieva, E., Starič, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vossen, A., Wang, C. H., Wang, M. -Z., Wang, P., Wiechczynski, J., Won, E., Yang, S. B., Ye, H., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We report results from a search for the decay $B_s^0\rightarrow\eta\eta$ using 121.4 fb$^{-1}$ of data collected at the $\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We do not observe any signal and set an upper limit on the branching fraction of $14.3\times 10^{-5}$ at $90\%$ confidence level. This result represents a significant improvement over the previous most stringent limit., Comment: 7 pages, 6 figures
Published: 2021
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2. Study of $\chi_{bJ}(nP) \rightarrow \omega \Upsilon(1S)$ at Belle

Author: Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Bahinipati, S., Bakich, A. M., Ban, Y., Barberio, E., Barrett, M., Bauer, M., Behera, P., Beleño, C., Belous, K., Bennett, J., Bernlochner, F., Bessner, M., Besson, D., Bhardwaj, V., Bhuyan, B., Bilka, T., Bilokin, S., Biswal, J., Bloomfield, T., Bobrov, A., Bodrov, D., Bondar, A., Bonvicini, G., Bozek, A., Bra\v, M., Branchini, P., Braun, N., Breibeck, F., Browder, T. E., Budano, A., Campajola, M., Cao, L., Caria, G., \v, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, Y., Chen, Y. -T., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Das, S., Dash, N., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Dole\v, Z., Dong, T. V., Dossett, D., Drásal, Z., Dubey, S., Ecker, P., Eidelman, S., Epifanov, D., Feindt, M., Ferber, T., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Goldenzweig, P., Golob, B., Gong, G., Graziani, E., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Gu, T., Guan, Y., Gudkova, K., Guido, E., Guo, H., Haba, J., Hadjivasiliou, C., Halder, S., Hamer, P., Hara, K., Hara, T., Hartbrich, O., Hasenbusch, J., Hayasaka, K., Hayashii, H., Hazra, S., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Villanueva, M. Hernandez, Higuchi, T., Hirose, S., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, C. W., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, Y., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kim, Y. -K., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kody\v, P., Koga, Y., Komarov, I., Konno, T., Korobov, A., Korpar, S., Kovalenko, E., Kri\v, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasni\v, P., Kwon, Y. -J., Lai, Y. -T., Lalwani, K., Lange, J. S., Laurenza, M., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Limosani, A., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Metzner, F., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Park, S. -H., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Peng, T., Pes\', L., Pestotnik, R., Peters, M., Piilonen, L. E., Podobnik, T., Popov, V., Prasanth, K., Prencipe, E., Prim, M. T., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribe\v, E., Ritter, M., R\", M., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schmolz, P., Schneider, O., Schnell, G., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Sharma, C., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Sokolov, A., Soloviev, Y., Solovieva, E., Stani\v, S., Stari\v, M., Steder, M., Stottler, Z. S., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Thampi, A., Tiwary, R., Trabelsi, K., Tsuboyama, T., Uchida, M., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, K., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, D., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Werbycka, O., Widmann, E., Wiechczynski, J., Won, E., Xu, X., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yan, W., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, J., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: We report results from a study of hadronic transitions of the $\chi_{bJ}(nP)$ states of bottomonium at Belle. The $P$-wave states are reconstructed in transitions to the $\Upsilon(1S)$ with the emission of an $\omega$ meson. The transitions of the $n=2$ triplet states provide a unique laboratory in which to study nonrelativistic quantum chromodynamics, as the kinematic threshold for production of an $\omega$ and $\Upsilon(1S)$ lies between the $J=0$ and $J=1$ states. A search for the $\chi_{bJ}(3P)$ states is also reported.
Published: 2021

3. Measurement of ${\mathcal B}$($B_s \rightarrow D_s X$) with $B_s$ Semileptonic Tagging

Author: Wang, B., Kinoshita, K., Aihara, H., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chen, A., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., Di Capua, F., Di Carlo, S., Doležal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Hayashii, H., Hou, W. -S., Inami, K., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kiesling, C., Kim, D. Y., Kim, K. T., Kim, S. H., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, I. S., Lee, J. Y., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Mizuk, R., Mohanty, G. B., Mussa, R., Nakao, M., Nath, K. J., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlova, G., Pal, B., Pang, T., Pardi, S., Park, H., Park, S. -H., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Russo, G., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tanida, K., Tenchini, F., Uglov, T., Uno, S., Usov, Y., Van Tonder, R., Varner, G., Vinokurova, A., Waheed, E., Wang, C. H., Wang, M. -Z., Wang, P., Werbycka, O., Won, E., Yang, S. B., Ye, H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We report the first direct measurement of the inclusive branching fraction ${\mathcal B}(B_s \rightarrow D_s X)$ via $B_s$ tagging in $e^+e^-\to\Upsilon$(5S) events. Tagging is accomplished through a partial reconstruction of semileptonic decays $B_s \rightarrow D_s X \ell \nu$, where $X$ denotes unreconstructed additional hadrons or photons and $\ell$ is an electron or muon. With 121.4 fb$^{-1}$ of data collected at the $\Upsilon$(5S) resonance by the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider, we obtain ${\mathcal B}(B_s \rightarrow D_s X)$ = $(60.2 \pm 5.8 \pm 2.3)$\%, where the first uncertainty is statistical and the second is systematic.
Published: 2021
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4. Measurements of Partial Branching Fractions of Inclusive $B \to X_u \, \ell^+\, \nu_{\ell}$ Decays with Hadronic Tagging

Author: Belle Collaboration, Cao, L., Sutcliffe, W., Van Tonder, R., Bernlochner, F. U., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Bauer, M., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dubey, S., Eidelman, S., Epifanov, D., Ferber, T., Ferlewicz, D., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Hadjivasiliou, C., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Konno, T., Korobov, A., Korpar, S., Kotchetkov, D., Kovalenko, E., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, S. C., Lewis, P., Li, C. H., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., Liventsev, D., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mrvar, M., Mussa, R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, C. W., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vahsen, S. E., Varner, G., Varvell, K. E., Vinokurova, A., Vorobyev, V., Vossen, A., Waheed, E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Wiechczynski, J., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We present measurements of partial branching fractions of inclusive semileptonic $B \to X_u \, \ell^+\, \nu_{\ell}$ decays using the full Belle data set of 711 fb$^{-1}$ of integrated luminosity at the $\Upsilon(4S)$ resonance and for $\ell = e, \mu$. Inclusive semileptonic $B \to X_u \, \ell^+\, \nu_{\ell}$ decays are CKM suppressed and measurements are complicated by the large background from CKM-favored $B \to X_c \, \ell^+\, \nu_{\ell}$ transitions, which have a similar signature. Using machine learning techniques, we reduce this and other backgrounds effectively, whilst retaining access to a large fraction of the $B \to X_u \, \ell^+\, \nu_{\ell}$ phase space and high signal efficiency. We measure partial branching fractions in three phase-space regions covering about $31\%$ to $86\%$ of the accessible $B \to X_u \, \ell^+\, \nu_{\ell}$ phase space. The most inclusive measurement corresponds to the phase space with lepton energies of $E_\ell^B > 1 $ GeV, and we obtain $\Delta \mathcal{B}(B \to X_u \ell^+ \, \nu_\ell) = \left( 1.59 \pm 0.07 \pm 0.16 \right) \times 10^{-3}$ from a two-dimensional fit of the hadronic mass spectrum and the four-momentum-transfer squared distribution, with the uncertainties denoting the statistical and systematic error. We find $\left| V_{ub} \right| = \left( 4.10 \pm 0.09 \pm 0.22 \pm 0.15 \right) \times 10^{-3}$ from an average of four calculations for the partial decay rate with the third uncertainty denoting the average theory error. This value is higher but compatible with the determination from exclusive semileptonic decays within 1.3 standard deviations. In addition, we report charmless inclusive partial branching fractions separately for $B^+$ and $B^0$ mesons as well as for electron and muon final states. No isospin breaking or lepton flavor universality violating effects are observed., Comment: 34 pages, 23 figures, 7 tables. Accepted by Phys. Rev. D
Published: 2021
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5. Search for the dark photon in $B^0 \to A^{\prime} A^{\prime}$, $A^{\prime} \to e^+ e^-$, $\mu^+ \mu^-$, and $\pi^+ \pi^-$ decays at Belle

Author: Park, S. -H., Kwon, Y. -J., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Behera, P., Bennett, J., Bessner, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chang, P., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Gudkova, K., Hadjivasiliou, C., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Huang, K., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Konno, T., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumara, K., Lalwani, K., Lee, I. S., Lee, S. C., Li, C. H., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mohanty, S., Mori, T., Moser, H. -G., Mrvar, M., Mussa, R., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, C. W., Park, H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Russo, G., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., 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., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Vahsen, S. E., Van Tonder, R., Varner, G., Varvell, K. E., Vinokurova, A., Vorobyev, V., Waheed, E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We present a search for the dark photon $A^{\prime}$ in the $B^0 \to A^{\prime} A^{\prime}$ decays, where $A^{\prime}$ subsequently decays to $e^+ e^-$, $\mu^+ \mu^-$, and $\pi^+ \pi^-$. The search is performed by analyzing $772 \times 10^6$ $B\overline{B}$ events collected by the Belle detector at the KEKB $e^+ e^-$ energy-asymmetric collider at the $\Upsilon (4S)$ resonance. No signal is found in the dark photon mass range $0.01~\mathrm{GeV}/c^2 \le m_{A^{\prime}} \le 2.62~\mathrm{GeV}/c^2$, and we set upper limits of the branching fraction of $B^0 \to A^{\prime} A^{\prime}$ at the 90\% confidence level. The products of branching fractions, $\mathcal{B}(B^0 \to A^{\prime} A^{\prime}) \times \mathcal{B}(A^{\prime} \to e^+ e^-)^2$ and $\mathcal{B}(B^0 \to A^{\prime} A^{\prime}) \times \mathcal{B}(A^{\prime} \to \mu^+ \mu^-)^2$, have limits of the order of $10^{-8}$ depending on the $A^{\prime}$ mass. Furthermore, considering $A^{\prime}$ decay rate to each pair of charged particles, the upper limits of $\mathcal{B}(B^0 \to A^{\prime} A^{\prime})$ are of the order of $10^{-8}$-$10^{-5}$. From the upper limits of $\mathcal{B}(B^0 \to A^{\prime} A^{\prime})$, we obtain the Higgs portal coupling for each assumed dark photon and dark Higgs mass. The Higgs portal couplings are of the order of $10^{-2}$-$10^{-1}$ at $m_{h'} \simeq m_{B^0} \pm 40~\mathrm{MeV}/c^2$ and $10^{-1}$-$1$ at $m_{h'} \simeq m_{B^0} \pm 3~\mathrm{GeV}/c^2$., Comment: 15 pages, 7 figures
Published: 2020
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6. Measurement of time-dependent CP violation parameters in $B^0 \to K_0^SK_0^SK_0^S$ decays at Belle

Author: Belle Collaboration, Kang, K. H., Park, H., Higuchi, T., Miyabayashi, K., Sumisawa, K., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Bakich, A. M., Behera, P., Beleño, C., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Doležal, Z., Dong, T. V., Eidelman, S., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Greenwald, D., Guan, Y., Hartbrich, O., Hayasaka, K., Hayashii, H., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joo, K. K., Kaliyar, A. B., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, I. S., Lee, S. C., Li, J., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Morii, T., Mrvar, M., Mussa, R., Nakao, M., Natkaniec, Z., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Varner, G., Vinokurova, A., Vorobyev, V., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanuki, S., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We measure the time-dependent $C\!P$ violation parameters in $B^{0} \to K^{0}_{S}K^{0}_{S}K^{0}_{S}$ decays using $772 \times 10^6$ $B {\mkern 1.5mu\overline{\mkern-1.5mu B \mkern-0.1mu}\mkern 0.1mu}$ pairs collected at the $\Upsilon (4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The obtained mixing-induced and direct $C\!P$ asymmetries are $-0.71 \pm 0.23~{\rm(stat)} \pm 0.05~{\rm(syst)}$ and $0.12 \pm 0.16~{\rm(stat)} \pm 0.05~{\rm(syst)}$, respectively. These values are consistent with the Standard Model predictions. The significance of $C\!P$ violation differs from zero by 2.5 standard deviations., Comment: To be submitted to Physical Review D (RC)
Published: 2020
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7. Search for lepton-number- and baryon-number-violating tau decays at Belle

Author: Sahoo, D., Mohanty, G. B., Trabelsi, K., Adachi, I., Adamczyk, K., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Aziz, T., Babu, V., Bahinipati, S., Behera, P., Bennett, J., Bessner, M., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Das, S., Dash, N., De Nardo, G., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dubey, S., Eidelman, S., Epifanov, D., Ferber, T., Ferlewicz, D., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Guan, Y., Gudkova, K., Hadjivasiliou, C., Halder, S., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Hou, W. -S., Hsu, C. -L., Huang, K., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Konno, T., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, M., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lee, I. S., Lee, S. C., Li, C. H., Li, J., Li, L. K., Li, Y. B., Libby, J., Lieret, K., Liventsev, D., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, S., Moon, T. J., Mussa, R., Nakano, E., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, C. W., Park, H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Waheed, E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: We search for lepton-number- and baryon-number-violating decays $\tau^{-}\to\overline{p}e^{+}e^{-}$, $pe^{-}e^{-}$, $\overline{p}e^{+}\mu^{-}$, $\overline{p}e^{-}\mu^{+}$, $\overline{p}\mu^{+}\mu^{-}$, and $p\mu^{-}\mu^{-}$ using 921 fb$^{-1}$ of data, equivalent to $(841\pm12)\times 10^6$ $\tau^{+}\tau^{-}$ events, recorded with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. In the absence of a signal, $90\%$ confidence-level upper limits are set on the branching fractions of these decays in the range $(1.8$-$4.0)\times 10^{-8}$. We set the world's first limits on the first four channels and improve the existing limits by an order of magnitude for the last two channels., Comment: 8 pages, 5 figures, 1 table
Published: 2020
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8. Search for the Decay $B_s^0 \rightarrow \eta^\prime \eta$

Author: Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Bahinipati, S., Bakich, A. M., Ban, Y., Barberio, E., Barrett, M., Bauer, M., Behera, P., Beleño, C., Belous, K., Bennett, J., Berger, M., Bernlochner, F., Bessner, M., Besson, D., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bloomfield, T., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Braun, N., Breibeck, F., Browder, T. E., Campajola, M., Cao, L., Caria, G., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, Y., Chen, Y. -T., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Das, S., Dash, N., De Nardo, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Drásal, Z., Dubey, S., Eidelman, S., Epifanov, D., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hadjivasiliou, C., Hamer, P., Hara, K., Hara, T., Hartbrich, O., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Villanueva, M. Hernandez, Higuchi, T., Hirose, S., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, C. W., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, Y., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kim, Y. -K., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kodyš, P., Koga, Y., Komarov, I., Konno, T., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, M., Kumar, R., Kumara, K., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Limosani, A., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Metzner, F., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Piilonen, L. E., Podobnik, T., Popov, V., Prasanth, K., Prencipe, E., Prim, M. T., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribežl, E., Ritter, M., Röhrken, M., Rorie, J., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Sharma, C., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Stottler, Z., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Thampi, A., Trabelsi, K., Tsuboyama, T., Uchida, M., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Xu, X., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yan, W., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, J., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: In the Standard Model (SM) charmless hadronic decays $B_s^0 \rightarrow \eta^\prime \eta$ proceed via tree-level $b\to u$ and penguin $b\to s$ transitions. Penguin transitions are sensitive to Beyond-the-Standard-Model (BSM) physics scenarios and could affect the branching fractions and {\it CP} asymmetries in such decays. Once branching fractions for two-body decays $B_s \to \eta\eta, \eta\eta^{\prime}, \eta^{\prime}\eta^{\prime} $ are measured, and the theoretical uncertainties are reduced, it would be possible to extract {\it CP} violating parameters from the data using the formalism based on SU(3)/U(3) symmetry. To achieve this goal, at least four of these six branching fractions need to be measured. Only the branching fraction for $B_s^0 \to \eta^{\prime}\eta^{\prime}$ has been measured so far.
Published: 2020

9. Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle

Author: Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Bahinipati, S., Bakich, A. M., Ban, Y., Barberio, E., Barrett, M., Bauer, M., Behera, P., Beleño, C., Belous, K., Bennett, J., Berger, M., Bernlochner, F., Bessner, M., Besson, D., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bloomfield, T., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Braun, N., Breibeck, F., Browder, T. E., Campajola, M., Cao, L., Caria, G., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, Y., Chen, Y. -C., Chen, Y. -T., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Dash, N., De Nardo, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Drásal, Z., Dubey, S., Eidelman, S., Epifanov, D., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hadjivasiliou, C., Hamer, P., Hara, K., Hara, T., Hartbrich, O., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Villanueva, M. Hernandez, Higuchi, T., Hirose, S., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, C. W., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, Y., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kim, Y. -K., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kodyš, P., Koga, Y., Komarov, I., Konno, T., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumara, K., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Lee, Y. -J., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Limosani, A., Lin, C. -W., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Metzner, F., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Piilonen, L. E., Podobnik, T., Popov, V., Prasanth, K., Prencipe, E., Prim, M. T., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribežl, E., Ritter, M., Röhrken, M., Rorie, J., Rostomyan, A., Rout, N., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Stottler, Z., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Thampi, A., Trabelsi, K., Tsuboyama, T., Uchida, M., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Xu, X., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yan, W., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, J., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: The enhancement of charged-particle pairs with large pseudorapidity difference and small azimuthal angle difference, often referred to as the ``ridge signal'', is a phenomenon widely observed in high multiplicity proton-proton, proton-ion and deutron-ion collisions, which is not yet fully understood. In heavy-ion collisions, the hydrodynamic expansion of the Quark-Gluon Plasma is one of the possible explanations of the origin of the ridge signal. Measurements in the $e^+e^-$ collision system, without the complexities introduced by hadron structure in the initial state, can serve as a complementary probe to examine the formation of a ridge signal. The first measurement of two-particle angular correlation functions in high multiplicity $e^+e^-$ collisions at $\sqrt{s}=10.52$ GeV is reported. The hadronic $e^+e^-$ annihilation data collected by the Belle detector at KEKB are used in this study. Two-particle angular correlation functions are measured over the full azimuth and large pseudorapidity intervals which are defined by either the electron beam axis or the event thrust as a function of charged particle multiplicity. The measurement in the event thrust analysis, with mostly outgoing quark pairs determining the reference axis, is sensitive to the region of additional soft gluon emissions. No significant ridge signal is observed with either coordinates analyses. Near side jet correlations appear to be absent in the thrust axis analysis. The measurements are compared to predictions from various event generators and expected to provide new constraints to the phenomenological models in the low energy regime., Comment: 13 pages, 5 figures. Conference paper for ICHEP 2020
Published: 2020

10. Measurement of the Branching Fraction of the Decay $\boldsymbol{B^{+}\to\pi^{+}\pi^{-}\ell^{+}\nu_\ell}$ in Fully Reconstructed Events at Belle

Author: The Belle Collaboration, Beleño, C., Frey, A., Adachi, I., Aihara, H., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Behera, P., Bennett, J., Bernlochner, F., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chang, P., Chen, A., Chilikin, K., Cho, K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Inami, K., Ishikawa, A., Iwasaki, M., Jacobs, W. W., Jeon, H. B., Jin, Y., Joo, K. K., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kimmel, T. D., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Mohanty, G. B., Moon, T. J., Mori, T., Mrvar, M., Nakao, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Patra, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Sanuki, T., Savinov, V., Schnell, G., Schwanda, C., Schwartz, A. J., Schwenker, B., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Urquijo, P., Vahsen, S. E., Van Tonder, R., Varner, G., Varvell, K. E., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Won, E., Xu, X., Yan, W., Yang, S. B., Ye, H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We present an analysis of the exclusive $B^{+}\to\pi^{+}\pi^{-}\ell^{+}\nu_{\ell}$ decay, where $\ell$ represents an electron or a muon, with the assumption of charge-conjugation symmetry and lepton universality. The analysis uses the full $\Upsilon(4S)$ data sample collected by the Belle detector, corresponding to 711 fb$^{-1}$ of integrated luminosity. We select the events by fully reconstructing one $B$ meson in hadronic decay modes, subsequently determining the properties of the other $B$ meson. We extract the signal yields using a binned maximum-likelihood fit to the missing-mass squared distribution in bins of the invariant mass of the two pions or the momentum transfer squared. We measure a total branching fraction of ${{\cal B}(B^{+}\to \pi^{+}\pi^{-}\ell^{+}\nu_{\ell})= [22.7 ^{+1.9}_{-1.6} (\mathrm{stat}) \pm 3.5(\mathrm{syst}) ]\times 10^{-5}}$, where the uncertainties are statistical and systematic, respectively. This result is the first reported measurement of this decay., Comment: 23 pages, 19 figures
Published: 2020
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11. Evidence for a vector charmonium-like state in $e^+e^- \to D^+_sD^*_{s2}(2573)^-+c.c.$

Author: Belle Collaboration, Jia, S., Shen, C. P., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Ayad, R., Badhrees, I., Behera, P., Belous, K., Bennett, J., Besson, D., Bhardwaj, V., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Červenkov, D., Chang, P., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Dash, N., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jeon, H. B., Jin, Y., Joo, K. K., Karyan, G., Kawasaki, T., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. -H., Kim, S. H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Mizuk, R., Moon, T. J., Mori, T., Mrvar, M., Nakao, M., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Shwartz, B., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Usov, Y., Van Tonder, R., Varner, G., Vinokurova, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Won, E., Xu, X., Yan, W., Yang, S. B., Ye, H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: We report the measurement of $e^+e^- \to D^+_sD^*_{s2}(2573)^-+c.c.$ via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb$^{-1}$ collected with the Belle detector at the $\Upsilon(4S)$ and nearby. We find evidence for an enhancement with a 3.4$\sigma$ significance in the invariant mass of $D^+_sD^*_{s2}(2573)^- +c.c.$ The measured mass and width are $(4619.8^{+8.9}_{-8.0}({\rm stat.})\pm2.3({\rm syst.}))~{\rm MeV}/c^{2}$ and $(47.0^{+31.3}_{-14.8}({\rm stat.})\pm4.6({\rm syst.}))~{\rm MeV}$, respectively. The mass, width, and quantum numbers of this enhancement are consistent with the charmonium-like state at 4626 MeV/$c^2$ recently reported by Belle in $e^+e^-\to D^+_sD_{s1}(2536)^-+c.c.$ The product of the $e^+e^-\to D^+_sD^*_{s2}(2573)^-+c.c.$ cross section and the branching fraction of $D^*_{s2}(2573)^-\to{\bar D}^0K^-$ is measured from $D^+_sD^*_{s2}(2573)^-$ threshold to 5.6 GeV., Comment: 9 pages, 4 figures
Published: 2020
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12. Dalitz analysis of $D^{0}\to K^{-}\pi^{+}\eta$ decays at Belle

Author: Belle Collaboration, Chen, Y. Q., Li, L. K., Yan, W. B., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Behera, P., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joo, K. K., Kang, K. H., Karyan, G., Kawasaki, T., Kim, D. Y., Kim, S. H., Kimmel, T. D., Kinoshita, K., Kodyš, P., Korpar, S., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, S. C., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., MacNaughton, J., MacQueen, C., Masuda, M., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, S., Mussa, R., Nakao, M., Natkaniec, Z., Nayak, M., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rabusov, A., Ritter, M., Röhrken, M., Rout, N., Russo, G., Sahoo, D., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Uno, S., Urquijo, P., Varner, G., Vorobyev, V., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Won, E., Xu, X., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We present the results of the first Dalitz plot analysis of the decay $D^{0}\to K^{-}\pi^{+}\eta$. The analysis is performed on a data set corresponding to an integrated luminosity of 953 $\rm{fb}^{-1}$ collected by the Belle detector at the asymmetric-energy $e^{+}e^{-}$ KEKB collider. The Dalitz plot is well described by a combination of the six resonant decay channels $\bar{K}^{*}(892)^0\eta$, $K^{-}a_0(980)^+$, $K^{-}a_2(1320)^+$, $\bar{K}^{*}(1410)^0\eta$, $K^{*}(1680)^-\pi^{+}$ and $K_2^{*}(1980)^-\pi^{+}$, together with $K\pi$ and $K\eta$ S-wave components. The decays $K^{*}(1680)^{-}\to K^{-}\eta$ and $K_{2}^{*}(1980)^{-}\to K^{-}\eta$ are observed for the first time. We measure ratio of the branching fractions, $\frac{\mathcal{B}(D^{0}\to K^{-}\pi^{+}\eta)}{\mathcal{B}(D^{0}\to K^{-}\pi^{+})}=0.500\pm0.002{\rm(stat)}\pm0.020{\rm(syst)}\pm0.003{\rm (\mathcal{B}_{PDG})}$. Using the Dalitz fit result, the ratio $\frac{\mathcal{B}(K^{*}(1680)\to K\eta)}{\mathcal{B}(K^{*}(1680)\to K\pi)}$ is measured to be $0.11\pm0.02{\rm(stat)}^{+0.06}_{-0.04}{\rm(syst)}\pm0.04{\rm(\mathcal{B}_{\text{PDG}})}$; this is much lower than the theoretical expectations ($\approx1$) made under the assumption that $K^{*}(1680)$ is a pure $1^{3}D_1$ state. The product branching fraction $\mathcal{B}(D^0\to [K_2^{*}(1980)^-\to K^{-}\eta]\pi^{+})=(2.2^{+1.7}_{-1.9})\times10^{-4}$ is determined. In addition, the $\pi\eta^{\prime}$ contribution to the $a_0(980)^{\pm}$ resonance shape is confirmed with 10.1$\sigma$ statistical significance using the three-channel Flatt\'{e} model. We also measure $\mathcal{B}(D^0\to\bar{K}^{*}(892)^0\eta)=(1.41^{+0.13}_{-0.12})\%$. This is consistent with, and more precise than, the current world average $(1.02\pm0.30)\%$, deviates with a significance of more than $3\sigma$ from the theoretical predictions of (0.51-0.92)%., Comment: 11 pages, 2 figures
Published: 2020
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13. Search for $B^+ \to \mu^+\, \nu_\mu$ and $B^+ \to \mu^+\, N$ with inclusive tagging

Author: Prim, M. T., Bernlochner, F. U., Goldenzweig, P., Heck, M., Adachi, I., Adamczyk, K., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bakich, A. M., Bansal, V., Behera, P., Beleño, C., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Braun, N., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Doležal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Grzymkowska, O., Guan, Y., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Lewis, P., Li, C. H., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Lu, P. -C., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mussa, R., Nakao, M., De Nardo, G., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Santelj, L., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tao, Y., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Varvell, K. E., Vinokurova, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We report the result for a search for the leptonic decay of $B^+ \to \mu^+ \, \nu_{\mu}$ using the full Belle data set of 711 fb${}^{-1}$ of integrated luminosity at the $\Upsilon(4S)$ resonance. In the Standard Model leptonic $B$-meson decays are helicity and CKM suppressed. To maximize sensitivity an inclusive tagging approach is used to reconstruct the second $B$ meson produced in the collision. The directional information from this second $B$ meson is used to boost the observed $\mu$ into the signal $B$ meson rest-frame, in which the $\mu$ has a monochromatic momentum spectrum. Though its momentum is smeared by the experimental resolution, this technique improves the analysis sensitivity considerably. Analyzing the $\mu$ momentum spectrum in this frame we find $\mathcal{B}(B^+ \to \mu^+ \, \nu_\mu) = \left( 5.3 \pm 2.0 \pm 0.9 \right) \times 10^{-7}$ with a one-sided significance of 2.8 standard deviations over the background-only hypothesis. This translates to a frequentist upper limit of $\mathcal{B}(B^+ \to \mu^+ \, \nu_{\mu}) < 8.6 \times 10^{-7}$ at 90% CL. The experimental spectrum is then used to search for a massive sterile neutrino, $B^+ \to \mu^+ \, N$, but no evidence is observed for a sterile neutrino with a mass in a range of 0 - 1.5 GeV. The determined $B^+ \to \mu^+ \, \nu_{\mu}$ branching fraction limit is further used to constrain the mass and coupling space of the type II and type III two-Higgs-doublet models.
Published: 2019
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14. Observation of $ \tau^- \rightarrow \pi^- \nu_{\tau} e^+ e^-$ and search for $\tau^- \rightarrow \pi^- \nu_{\tau} \mu^+ \mu^-$

Author: Belle Collaboration, Jin, Y., Aihara, H., Epifanov, D., Adachi, I., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bansal, V., Behera, P., Berger, M., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bračko, M., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Dossett, D., Eidelman, S., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Giri, A., Goldenzweig, P., Golob, B., Greenwald, D., Grzymkowska, O., Haba, J., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Huang, K., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jia, S., Joffe, D., Joo, K. K., Kahn, J., Kaliyar, A. B., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, J. Y., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Lu, P. -C., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mori, T., Mussa, R., Nakano, E., Nakao, M., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Rostomyan, A., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shiu, J. -G., Shwartz, B., Simon, F., Singh, J. B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We present the first measurements of branching fractions of rare tau-lepton decays, $\tau^- \rightarrow \pi^- \nu_{\tau} \ell^+ \ell^-$ ($\ell = e$ or $\mu$), using a data sample corresponding to 562 fb$^{-1}$ collected at a center-of-mass energy of 10.58 GeV with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The $\tau^- \rightarrow \pi^- \nu_\tau e^+ e^-$ decay is observed for the first time with 7.0$\sigma$ significance. The partial branching fraction determined by the structure-dependent mechanisms mediated by either a vector or an axial-vector current for the mass region $M_{\pi e e}>1.05$ GeV/$c^2$ is measured to be $\mathcal{B}(\tau^-\rightarrow \pi^- \nu_\tau e^+ e^-)[M_{\pi^- e^+ e^-}>1.05~{\rm GeV}/c^2] = (5.90 \pm 0.53 \pm 0.85 \pm 0.11) \times 10^{-6}$, where the first uncertainty is statistical, the second is systematic, and the third is due to the model dependence. In the full phase space, due to the different detection efficiencies for the structure-dependent mechanisms mediated by axial-vector and vector currents, the branching fraction varies from $\mathcal{B}_{A}(\tau^-\rightarrow \pi^- \nu_\tau e^+ e^-) = (1.46 \pm 0.13 \pm 0.21) \times 10^{-5}$ to $\mathcal{B}_{V}(\tau^-\rightarrow \pi^- \nu_\tau e^+ e^-) = (3.01 \pm 0.27 \pm 0.43) \times 10^{-5}$, respectively. An upper limit is set on the branching fraction of the $\tau^- \rightarrow \pi^- \nu_\tau \mu^+ \mu^-$ decay, $\mathcal{B}(\tau^-\rightarrow \pi^- \nu_\tau \mu^+ \mu^-) < 1.14 \times 10^{-5}$, at the 90% confidence level., Comment: 8 pages, 5 figures, accepted by PRD(RC)
Published: 2019
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15. Experimental determination of the isospin of $\Lambda_c(2765)^+/\Sigma_c(2765)^+$

Author: The Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Ban, Y., Bansal, V., Barberio, E., Barrett, M., Bartel, W., Behera, P., Beleño, C., Belous, K., Bennett, J., Berger, M., Bernlochner, F., Besson, D., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bloomfield, T., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Braun, N., Breibeck, F., Browder, T. E., Campajola, M., Cao, L., Caria, G., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Cheaib, R., Chekelian, V., Chen, A., Chen, K. -F., Chen, Y., Cheon, B. G., Chilikin, K., Chistov, R., Cho, H. E., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Danilov, M., Dash, N., De Nardo, G., Di Carlo, S., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Drȧsal, Z., Drutskoy, A., Dubey, S., Dutta, D., Eidelman, S., Epifanov, D., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hamer, P., Hara, K., Hara, T., Hartbrich, O., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Higuchi, T., Hirose, S., Hoshi, Y., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jang, E. -J., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, C. W., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kodyš, P., Koga, Y., Konno, T., Korpar, S., Kotchetkov, D., Kouzes, R. T., Križan, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Limosani, A., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lu, P. -C., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Metzner, F., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Park, S. -H., Patra, S., Paul, S., Pavelkin, I., Pedlar, T. K., Peng, T., Pesàntez, L., Pestotnik, R., Peters, M., Piilonen, L. E., Popov, V., Prasanth, K., Prencipe, E., Prim, M. T., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribežl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Russo, G., Sahoo, D., Sahoo, H., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Stottler, Z., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Trabelsi, K., Tsuboyama, T., Uchida, M., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, C. C., Zhang, J., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: We report an experimental determination of the isospin of $\Lambda_c(2765)^+/\Sigma_c(2765)^+$ using 980 fb$^{-1}$ data in the $e^+e^-$ annihilation around $\sqrt{s} = 10.6$ GeV collected by the Belle detector located at the KEKB collider. The isospin partners are searched for in the $\Sigma_c(2455)^{++/0} \pi^{0}$ channels, and no evidence was obtained. Thus the isospin is determined to be zero, and the particle is established to be a $\Lambda_c$., Comment: Conference paper submitted for Hadron2019
Published: 2019

16. Search for $\Omega(2012)\to K\Xi(1530) \to K\pi\Xi$ at Belle

Author: Belle Collaboration, Jia, S., Shen, C. P., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Bakich, A. M., Behera, P., Beleño, C., Bennett, J., Berger, M., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Di Capua, F., Di Carlo, S., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Huang, K., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kato, Y., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, H. J., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Lu, P. -C., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Miyata, H., Mizuk, R., Mori, T., Mussa, R., Nakano, T., Nakao, M., Nath, K. J., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vossen, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: Using data samples of $e^+e^-$ collisions collected at the $\Upsilon(1S)$, $\Upsilon(2S)$, and $\Upsilon(3S)$ resonances with the Belle detector, we search for the three-body decay of the $\Omega(2012)$ baryon to $K\pi\Xi$. This decay is predicted to dominate for models describing the $\Omega(2012)$ as a $K\Xi(1530)$ molecule. No significant $\Omega(2012)$ signals are observed in the studied channels, and 90\% credibility level upper limits on the ratios of the branching fractions relative to $K \Xi$ decay modes are obtained., Comment: 16 pages, 5 figures
Published: 2019
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17. Search for $B^0 \to X(3872) \gamma$

Author: Belle Collaboration, Chou, P. -C., Chang, P., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Behera, P., Bennett, J., Berger, M., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Grzymkowska, O., Haba, J., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Kato, Y., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lai, Y. -T., Lange, J. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, C. H., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Mussa, R., Nath, K. J., Nayak, M., Niiyama, M., Nishida, S., Nishimura, K., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shiu, J. -G., Shwartz, B., Singh, J. B., Solovieva, E., Starič, M., Stottler, Z. S., Strube, J. F., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vossen, A., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We report the results of a search for the decay $B^0 \to X(3872)(\to J/\psi \pi^+ \pi^-) \gamma$. The analysis is performed on a data sample corresponding to an integrated luminosity of $711\,{\rm fb}^{-1}$ and containing $772 \times 10^6 B\bar{B}$ pairs, collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider running at the $\Upsilon(4S)$ resonance energy. We find no evidence for a signal and place an upper limit of $\mathcal{B}(B^0 \to X(3872)\gamma)\times \mathcal{B}(X(3872) \to J/\psi \pi^+ \pi^-) < 5.1 \times 10^{-7}$ at 90% confidence level., Comment: 7 pages, 3 figures
Published: 2019
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18. Observation of a new structure near 10.75 GeV in the energy dependence of the $e^+e^-\to\Upsilon(nS)\pi^+\pi^-$ ($n=1,2,3$) cross sections

Author: Mizuk, R., Bondar, A., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Badhrees, I., Bahinipati, S., Bakich, A. M., Behera, P., Beleño, C., Berger, M., Bhardwaj, V., Bilka, T., Biswal, J., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Di Capua, F., Di Carlo, S., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jin, Y., Joffe, D., Joo, K. K., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, H. J., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, R., Kuzmin, A., Lange, J. S., Lee, J. Y., Lee, S. C., Li, L. K., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyata, H., Mohanty, G. B., Mori, T., Mussa, R., Nakano, T., Nakao, M., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Pardi, S., Park, S. -H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Wang, B., Wang, C. H., Wang, P., Won, E., Yang, S. B., Ye, H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We report a new measurement of the $e^+e^-\to\Upsilon(nS)\pi^+\pi^-$ ($n=1,2,3$) cross sections at energies from 10.52 to 11.02 GeV using data collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We observe a new structure in the energy dependence of the cross sections; if described by a Breit-Wigner function its mass and width are found to be $M=(10752.7\pm5.9\,^{+0.7}_{-1.1})\,$MeV/$c^2$ and $\Gamma=(35.5^{+17.6}_{-11.3}\,^{+3.9}_{-3.3})\,$MeV, where the first error is statistical and the second is systematic. The global significance of the new structure including systematic uncertainty is 5.2 standard deviations. We also find evidence for the $e^+e^-\to\Upsilon(1S)\pi^+\pi^-$ process at the energy 10.52 GeV, which is below the $B\bar{B}$ threshold., Comment: 26 pages, 12 figures, final version accepted by JHEP
Published: 2019
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19. First measurements of absolute branching fractions of the $\Xi_c^+$ baryon at Belle

Author: Belle Collaboration, Li, Y. B., Shen, C. P., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Bakich, A. M., Ban, Y., Bansal, V., Behera, P., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dossett, D., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Grube, B., Grzymkowska, O., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Karyan, G., Kato, Y., Kawasaki, T., Kichimi, H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, C. H., Li, L. K., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Lu, P. -C., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, T. J., Mussa, R., Nakao, M., Nath, K. J., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Strube, J. F., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Ushiroda, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: We present the first measurements of the absolute branching fractions of $\Xi_c^+$ decays into $\Xi^- \pi^+ \pi^+$ and $p K^- \pi^+$ final states. Our analysis is based on a data set of $(772\pm 11)\times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. We measure the absolute branching fraction of $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ with the $\Xi_c^+$ recoiling against $\bar{\Lambda}_c^-$ in $\bar{B}^0$ decays resulting in ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}) = [1.16 \pm 0.42(\rm stat.) \pm 0.15(\rm syst.)] \times 10^{-3}$. We then measure the product branching fractions ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+)$ and ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to p K^- \pi^+)$. Dividing these product branching fractions by $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ yields: ${\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+) = [2.86 \pm 1.21(\rm stat.) \pm 0.38(\rm syst.)]\%$ and ${\cal B}(\Xi_c^+ \to p K^- \pi^+)=[0.45 \pm 0.21(\rm stat.) \pm 0.07(\rm syst.)]\%$. Our result for ${\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+)$ can be combined with $\Xi_c^+$ branching fractions measured relative to $\Xi_c^+ \to \Xi^- \pi^+ \pi^+$ to set the absolute scale for many $\Xi_c^+$ branching fractions., Comment: 7 pages, 2 figures, accepted for publication as a Rapid Communication in Physical Review D
Published: 2019
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20. Measurement of $\mathcal{R}(D)$ and $\mathcal{R}(D^{\ast})$ with a semileptonic tagging method

Author: The Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Aso, T., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bala, A., Ban, Y., Bansal, V., Barberio, E., Barrett, M., Bartel, W., Bay, A., Behera, P., Belhorn, M., Belous, K., Berger, M., Bernlochner, F. U., Besson, D., Bhardwaj, V., Bhuyan, B., Biswal, J., Bloomfield, T., Blyth, S., Bobrov, A., Bondar, A., Bonvicini, G., Bookwalter, C., Boulahouache, C., Bozek, A., Bračko, M., Braun, N., Breibeck, F., Brodzicka, J., Browder, T. E., Caria, G., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, P., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Crnkovic, J., Cunliffe, S., Dalseno, J., Danilov, M., Dash, N., Di Carlo, S., Dingfelder, J., Doležal, Z., Dossett, D., Drásal, Z., Drutskoy, A., Dubey, S., Dutta, D., Dutta, K., Eidelman, S., Epifanov, D., Falke, S., Farhat, H., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Gillard, R., Giordano, F., Glattauer, R., Goh, Y. M., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hamer, P., Han, Y. L., Hara, K., Hara, T., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Higuchi, T., Himori, S., Hirose, S., Horiguchi, T., Hoshi, Y., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huschle, M., Hyun, H. J., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itagaki, K., Itoh, R., Iwabuchi, M., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, E., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, S. H., Kim, S. K., Kim, Y. J., Kinoshita, K., Kleinwort, C., Klucar, J., Ko, B. R., Kobayashi, N., Koblitz, S., Kodyš, P., Koga, Y., Korpar, S., Kotchetkov, D., Kouzes, R. T., Križan, P., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lange, J. S., Lee, D. H., Lee, I. S., Lee, S. -H., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L., Li, X., Li, Y., Gioi, L. Li, Libby, J., Limosani, A., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Lukin, P., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Matyja, A., Metzner, F., McOnie, S., Mikami, Y., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Mohapatra, D., Moll, A., Moon, H. K., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagamine, T., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, H., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Nedelkovska, E., Negishi, K., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Nozaki, T., Ogawa, A., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Ono, Y., Onuki, Y., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Palka, H., Panzenböck, E., Park, C. -S., Park, C. W., Park, H., Park, K. S., Paul, S., Peak, L. S., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Petrič, M., Piilonen, L. E., Poluektov, A., Prasanth, K., Prim, M., Prothmann, K., Pulvermacher, C., Purohit, M. V., Rauch, J., Reisert, B., Ribežl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Rummel, S., Ryu, S., Sahoo, H., Salehi, M., Saito, T., Sakai, K., Sakai, Y., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schönmeier, P., Schram, M., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shimizu, N., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smerkol, P., Sohn, Y. -S., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Suzuki, K., Suzuki, S., Suzuki, S. Y., Suzuki, Z., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Taylor, G. N., Tenchini, F., Teramoto, Y., Tikhomirov, I., Trabelsi, K., Trusov, V., Tsuboyama, T., Uchida, M., Uchida, T., Uehara, S., Ueno, K., Uglov, T., Unno, Y., Uno, S., Uozumi, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, J., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Wedd, R., Wehle, S., White, E., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamaoka, J., Yamashita, Y., Yamauchi, M., Yashchenko, S., Ye, H., Yelton, J., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Ziegler, M., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: We report a measurement of the ratios of branching fractions $\mathcal{R}(D) = {\cal B}(\bar{B} \to D \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B} \to D \ell^- \bar{\nu}_{\ell})$ and $\mathcal{R}(D^{\ast}) = {\cal B}(\bar{B} \to D^* \tau^- \bar{\nu}_{\tau})/{\cal B}(\bar{B} \to D^* \ell^- \bar{\nu}_{\ell})$, where $\ell$ denotes an electron or a muon. The results are based on a data sample containing $772\times10^6$ $B\bar{B}$ events recorded at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+ e^-$ collider. The analysis utilizes a method where the tag-side $B$ meson is reconstructed in a semileptonic decay mode, and the signal-side $\tau$ is reconstructed in a purely leptonic decay. The measured values are $\mathcal{R}(D)= 0.307 \pm 0.037 \pm 0.016$ and $\mathcal{R}(D^{\ast})= 0.283 \pm 0.018 \pm 0.014$, where the first uncertainties are statistical and the second are systematic. These results are in agreement with the Standard Model predictions within $0.2$ and $1.1$ standard deviations, respectively, while their combination agrees with the Standard Model predictions within $1.2$ standard deviations., Comment: 12 pages, 6 figures
Published: 2019

21. Search for $X(3872)$ and $X(3915)$ decay into $\chi_{c1} \pi^0$ in $B$ decays at Belle

Author: Bhardwaj, V., Jia, S., Adachi, I., Aihara, H., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bansal, V., Behera, P., Beleño, C., Berger, M., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Greenwald, D., Grzymkowska, O., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Kaliyar, A. B., Karyan, G., Kato, Y., Kawasaki, T., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Lu, P. -C., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mori, T., Mussa, R., Nakao, M., Nath, K. J., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Resmi, P. K., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shen, C. P., Shiu, J. -G., Shwartz, B., Simon, F., 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., Uchida, M., Uehara, S., Uglov, T., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Zhang, J., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We report a search for $X(3872)$ and $X(3915)$ in $B^+ \to \chi_{c1} \pi^0 K^+$ decays. We set an upper limit of $\mathcal{B}(B^+ \to X(3872) K^+) \times \mathcal{B}(X(3872) \to \chi_{c1} \pi^0)$ $ < 8.1 \times 10^{-6}$ and $\mathcal{B}(B^+ \to X(3915) K^+) \times \mathcal{B}(X(3915) \to \chi_{c1} \pi^0)$ $ < 3.8 \times 10^{-5}$ at 90\% confidence level. We also measure $\mathcal{B}(X(3872) \to \chi_{c1} \pi^0)/\mathcal{B}(X(3872) \to J/\psi \pi^+ \pi^-) < 0.97$ at 90\% confidence level. The results reported here are obtained from $772 \times 10^{6}$ $B\overline{B}$ events collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider., Comment: 7 pages, 4 figures, submitted to PRD (RC)
Published: 2019
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22. Measurement of branching fraction and final-state asymmetry for the $\bar{B}^{0}\to K^{0}_{S}K^{\mp}\pi^{\pm}$ decay

Author: Belle Collaboration, Lai, Y. -T., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Bele\{n}o, C., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Cao, L., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Greenwald, D., Guan, Y., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Huang, K., Iijima, T., Inami, K., Inguglia, G., a, A. Ishikaw, Itoh, R., Iwasaki, M., Iwasaki, Y., Jia, S., Jin, Y., Joffe, D., Kaliyar, A. B., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, S . H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K ., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liptak, Z., Liventsev, D., Lu, P. -C., bej, M. Lu, Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mori, T., Mrvar, M., Mussa, R., Nakano, E., Nakao, M., Nath, K. J., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Pakhlova, G., Pal, B., Pardi, S., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Rabusov, A., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shen, C. P., bata, T. -A. Shi, Shiu, J. -G., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Tonder, R., Varner, G., Varvell, K. E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Widmann, E., Won, E., Yamamoto, H., Yang, S. B., Ye, H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We report a measurement of the branching fraction and final-state asymmetry for the $\bar{B}^{0}\to K^{0}_{S}K^{\mp}\pi^{\pm}$ decays. The analysis is based on a data sample of 711 $\rm{fb}^{-1}$ collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. We obtain a branching fraction of $(3.60\pm0.33\pm0.15)\times10^{-6}$ and a final-state asymmetry of $(-8.5\pm8.9\pm0.2)\%$, where the first uncertainties are statistical and the second are systematic. Hints of peaking structures are seen in the differential branching fractions measured as functions of Dalitz variables., Comment: 17 pages, 4 figures, to be submitted to PRD(RC)
Published: 2019
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23. Evidence for the decay $B^0\to p\bar{p}\pi^0$

Author: Belle Collaboration, Pal, B., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bansal, V., Behera, P., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Dossett, D., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Karyan, G., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kwon, Y. -J., Lee, J. Y., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Lu, P. -C., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Nakao, M., Nath, K. J., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shen, C. P., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Vinokurova, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yelton, J., Yusa, Y., Zhang, J., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We report a search for the charmless baryonic decay $B^0\to p\bar{p}\pi^0$ with a data sample corresponding to an integrated luminosity of 711~$\rm fb^{-1}$ containing $(772\pm 10)\times 10^6$ $B^0\bar{B}^0$ pairs. The data was collected by the Belle experiment running on the $\Upsilon(4S)$ resonance at the KEKB $e^+e^-$ collider. We measure a branching fraction $\mathcal{B}(B^0\to p\bar{p}\pi^0)= (5.0\pm1.8\pm0.6 )\times 10^{-7}$, where the first uncertainty is statistical and the second is systematic. The signal has a significance of 3.1 standard deviations and constitutes the first evidence for this decay mode. We also search for the intermediate two-body decays $B^{0}\to\Delta^+\bar{p}$ and $B^0\to\bar{\Delta}^-p$, and set an upper limit on the branching fraction: $\mathcal{B}(B^0\to \Delta^+\bar{p})+\mathcal{B}(B^0\to\bar{\Delta}^-p)<1.6\times10^{-6}$ at 90% confidence level., Comment: 8 pages, 3 figures, Submitted to Phys. Rev. D (RC)
Published: 2019
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24. Test of lepton-flavor universality in ${B\to K^\ast\ell^+\ell^-}$ decays at Belle

Author: Belle Collaboration, Wehle, S., Adachi, I., Adamczyk, K., Aihara, H., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Behera, P., Berger, M., Bhardwaj, V., Biswal, J., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Chang, M. -C., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Di Capua, F., Dubey, S., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Greenwald, D., Guan, Y., Haba, J., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Higuchi, T., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Kahn, J., Kaliyar, A. B., Karyan, G., Kichimi, H., Kim, D. Y., Kim, K. T., Kim, S. H., Kim, Y. -K., Kinoshita, K., Komarov, I., Korpar, S., Kotchetkov, D., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, J. Y., Lee, S. C., Li, Y. B., Libby, J., Liptak, Z., Liventsev, D., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., McNeil, J. T., Merola, M., Metzner, F., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, T. J., Mussa, R., Nakao, M., Natochii, A., Nayak, M., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Park, H., Park, S. -H., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Resmi, P. K., Ritter, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shiu, J. -G., Shwartz, B., Solovieva, E., Starič, M., Strube, J. F., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Ushiroda, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Varvell, K. E., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Won, E., Xu, X., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We present a measurement of $R_{K^{\ast}}$, the branching fraction ratio ${{\cal B}(B\to K^\ast \mu^+ \mu^-)}$/ ${{\cal B}(B\to K^\ast e^+ e^-)}$, for both charged and neutral $B$ mesons. The ratio for the charged case, $R_{K{^{\ast +}}}$, is the first measurement ever performed. In addition, we report absolute branching fractions for the individual modes in bins of the squared dilepton invariant mass, $q^2$. The analysis is based on a data sample of $711~\mathrm{fb}^{-1}$, containing $772\times 10^{6}$ $B\bar B$ events, recorded at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The obtained results are consistent with Standard Model expectations., Comment: Submitted to PRL
Published: 2019
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25. Evidence for $B^+ \rightarrow h_c K^+$ and observation of $\eta_c(2S) \to p \bar{p} \pi^+ \pi^-$

Author: Belle Collaboration, Chilikin, K., Adachi, I., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bansal, V., Behera, P., Beleño, C., Berger, M., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bondar, A., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Grzymkowska, O., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Kaliyar, A. B., Karyan, G., Kato, Y., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Lu, P. -C., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mori, T., Nakao, M., Nath, K. J., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shen, C. P., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uno, S., Urquijo, P., Usov, Y., Van Tonder, R., Varner, G., Vinokurova, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Zhang, J., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: A search for the decays $B^+ \rightarrow h_c K^+$ and $B^0 \rightarrow h_c K_S^0$ is performed. Evidence for the decay $B^+ \rightarrow h_c K^+$ is found; its significance is $4.8\sigma$. No evidence is found for $B^0 \rightarrow h_c K_S^0$. The branching fraction for $B^+ \rightarrow h_c K^+$ is measured to be $(3.7^{+1.0}_{-0.9}{}^{+0.8}_{-0.8}) \times 10^{-5}$; the upper limit for the $B^0 \rightarrow h_c K_S^0$ branching fraction is $1.4 \times 10^{-5}$ at $90\%$ C.L. In addition, a study of the $p \bar{p} \pi^+ \pi^-$ invariant mass distribution in the channel $B^+ \to (p \bar{p} \pi^+ \pi^-) K^+$ results in the first observation of the decay $\eta_c(2S) \to p \bar{p} \pi^+ \pi^-$ with $12.1\sigma$ significance. The analysis is based on the 711 $\mathrm{fb}^{-1}$ data sample collected by the Belle detector at the asymmetric-energy $e^+ e^-$ collider KEKB at the $\Upsilon(4S)$ resonance., Comment: 16 pages, 7 figures
Published: 2019
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26. Measurement of the $D^{\ast-}$ polarization in the decay $B^0 \to D^{\ast -}\tau^+\nu_{\tau}$

Author: Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Ban, Y., Bansal, V., Barberio, E., Barrett, M., Bartel, W., Behera, P., Beleño, C., Belous, K., Berger, M., Bernlochner, F., Besson, D., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bloomfield, T., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Braun, N., Breibeck, F., Browder, T. E., Campajola, M., Cao, L., Caria, G., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Cheaib, R., Chekelian, V., Chen, A., Chen, K. -F., Cheon, B. G., Chilikin, K., Chistov, R., Cho, H. E., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Danilov, M., Dash, N., Di Carlo, S., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Drásal, Z., Drutskoy, A., Dubey, S., Dutta, D., Eidelman, S., Epifanov, D., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hamer, P., Hara, K., Hara, T., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Higuchi, T., Hirose, S., Horiguchi, T., Hoshi, Y., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itagaki, K., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, C. W., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, E., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kodyš, P., Koga, Y., Konno, T., Korpar, S., Kotchetkov, D., Kouzes, R. T., Križan, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Limosani, A., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lu, P. -C., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., McNeil, J. T., Merola, M., Metzner, F., Mikami, Y., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, H., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Ono, Y., Onuki, Y., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Park, S. -H., Patra, S., Paul, S., Pavelkin, I., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Piilonen, L. E., Popov, V., Prasanth, K., Prencipe, E., Prim, M., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribežl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Rummel, S., Russo, G., Sahoo, D., Sahoo, H., Saito, T., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schönmeier, P., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Stottler, Z., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Suzuki, Z., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Trabelsi, K., Tsuboyama, T., Uchida, M., Uchida, T., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, C. C., Zhang, J., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: We report the first measurement of the $D^{\ast -}$ meson polarization in the decay $B^0 \to D^{*-} \tau^+\nu_{\tau}$ using the full data sample of 772$\times 10^6$ $B\bar{B}$ pairs recorded with the Belle detector at the KEKB electron-positron collider. Our result, $F_L^{D^\ast} = 0.60 \pm 0.08 ({\rm stat}) \pm 0.04 ({\rm sys})$, where $F_L^{D^\ast}$ denotes the $D^{\ast-}$ meson longitudinal polarization fraction, agrees within about $1.7$ standard deviations of the standard model prediction., Comment: 16 pages, 4 figures, CKM 2018
Published: 2019

27. Transverse momentum dependent production cross sections of charged pions, kaons and protons produced in inclusive $e^+e^-$ annihilation at $\sqrt{s}=$ 10.58 GeV

Author: Seidl, R., Adachi, I., Ahn, J. K., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Bakich, A. M., Bansal, V., Behera, P., Beleño, C., Berger, M., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Cao, L., Červenkov, D., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Kaliyar, A. B., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, S. H., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Levit, D., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, S., Mori, T., Mussa, R., Nakano, E., Nakano, T., Nakao, M., Nath, K. J., Natkaniec, Z., Nayak, M., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tao, Y., Tenchini, F., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Tonder, R., Varner, G., Vossen, A., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We report measurements of the production cross sections of charged pions, kaons, and protons as a function of fractional energy, the event-shape variable called thrust, and the transverse momentum with respect to the thrust axis. These measurements access the transverse momenta created in the fragmentation process, which are of critical importance to the understanding of any transverse momentum dependent distribution and fragmentation functions. The low transverse momentum part of the cross sections can be well described by Gaussians in transverse momentum as is generally assumed but the fractional-energy dependence is non-trivial and different hadron types have varying Gaussian widths. The width of these Gaussians decreases with thrust and shows an initially rising, then decreasing fractional-energy dependence. The widths for pions and kaons are comparable within uncertainties, while those for protons are significantly narrower. These single-hadron cross sections and Gaussian widths are obtained from a $558\,{\rm fb}^{-1}$ data sample collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider., Comment: 17 page, 15 figures, submitted to PRD
Published: 2019
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28. Search for the $B \to Y(4260) K, ~Y(4260) \to J/\psi \pi^+\pi^-$ decays

Author: Belle collaboration, Garg, R., Bhardwaj, V., Singh, J. B., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Bansal, V., Beleño, C., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Cao, L., Červenkov, D., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Fast, J. E., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Golob, B., Grzymkowska, O., Haba, J., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Kaliyar, A. B., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, J. B., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, R., Kwon, Y. -J., Lange, J. S., Lee, J. K., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Lu, P. -C., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Mussa, R., Nakao, M., Nath, K. J., Nayak, M., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prasanth, K., Prencipe, E., Resmi, P. K., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Sanuki, T., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Usov, Y., Van Tonder, R., Varner, G., Varvell, K. E., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We report the results of a search for the $B \to Y(4260) K, ~Y(4260)\to J/\psi\pi^+\pi^-$ decays. This study is based on a data sample corresponding to an integrated luminosity of 711~fb$^{-1}$, collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We investigate the $J/\psi\pi^+\pi^-$ invariant mass distribution in the range 4.0 to 4.6 GeV/$c^2$ using both $B^+ \to J/\psi \pi^+\pi^- K^+$ and $B^0 \to J/\psi \pi^+\pi^- K^0_S$ decays. We find excesses of events above the background levels, with a significances of 2.1 and 0.9 standard deviations for charged and neutral $B \to Y(4260) K$ decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, ${\cal B}(B^+ \to Y(4260) K^+) \times {\cal B}(Y(4260) \to J/\psi \pi^+ \pi^-) <1.4 \times 10^{-5}$ and ${\cal B}(B^0 \to Y(4260) K^0) \times {\cal B}(Y(4260) \to J/\psi \pi^+ \pi^-) <1.7 \times 10^{-5}$ at the 90\% confidence level., Comment: 8 pages, 3 figures, 3 tables
Published: 2019
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29. Measurements of branching fraction and direct $C\!P$ asymmetry in $B^{\pm}\to K^{0}_{S}K^{0}_{S}K^{\pm}$ and a search for $B^{\pm}\to K^{0}_{S}K^{0}_{S}\pi^{\pm}$

Author: The Belle Collaboration, Kaliyar, A. B., Behera, P., Mohanty, G. B., Gaur, V., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bansal, V., Beleno, C., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bracko, M., Cao, L., Cervenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Dingfelder, J., Dolezal, Z., Dong, T. V., Drasal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Frey, A., Fulsom, B. G., Garg, R., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Golob, B., Greenwald, D., Grzymkowska, O., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jia, S., Joffe, D., Joo, K. K., Kahn, J., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, H. J., Kim, S. H., Kimmel, T. D., Kinoshita, K., Kodys, P., Korpar, S., Kotchetkov, D., Krizan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Levit, D., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Luo, T., MacNaughton, J., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, S., Mori, T., Nakao, M., Nath, K. J., Natkaniec, Z., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, K., Ogawa, S., Ono, H., Onuki, Y., Ostrowicz, W., Pakhlova, G., Pal, B., Pardi, S., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prasanth, K., Prencipe, E., Rabusov, A., Resmi, P. K., Ritter, M., Rostomyan, A., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Solovieva, E., Staric, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Tonder, R., Varner, G., Varvell, K. E., Vossen, A., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We study charmless hadronic decays of charged $B$ mesons to the final states $K^{0}_{S}K^{0}_{S}K^{\pm}$ and $K^{0}_{S}K^{0}_{S}\pi^{\pm}$ using a $711 fb^{-1}$ data sample that contains $772\times 10^6$ $B\bar{B}$ pairs, and was collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. For $B^{\pm}\to K^{0}_{S}K^{0}_{S}K^{\pm}$, the measured branching fraction and direct $CP$ asymmetry are $[10.42\pm0.43(stat)\pm 0.22(syst)]\times10^{-6}$ and [$+1.6\pm3.9(stat)\pm 0.9(syst)$]%, respectively. In the absence of a statistically significant signal for $B^{\pm}\to K^{0}_{S}K^{0}_{S}\pi^{\pm}$, we obtain a 90% confidence-level upper limit on its branching fraction as $8.7 \times10^{-7}$.
Published: 2018
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30. First measurements of absolute branching fractions of $\Xi_c^0$ at Belle

Author: Belle Collaboration, Li, Y. B., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Badhrees, I., Bansal, V., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bondar, A., Bozek, A., Bračko, M., Cao, L., Červenkov, D., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Greenwald, D., Grube, B., Hayasaka, K., Hayashii, H., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Karyan, G., Kawasaki, T., Kichimi, H., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, J. Y., Lee, S. C., Gioi, L. Li, Libby, J., Liventsev, D., Lubej, M., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyata, H., Mizuk, R., Mohanty, G. B., Mussa, R., Nakano, E., Nakao, M., Nath, K. J., Nayak, M., Niiyama, M., Nishida, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, S. -H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: We present the first measurements of absolute branching fractions of $\Xi_c^0$ decays into $\Xi^- \pi^+$, $\Lambda K^- \pi^+$, and $p K^- K^- \pi^+$ final states. The measurements are made using a data set comprising $(772\pm 11)\times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+e^-$ collider. We first measure the absolute branching fraction for $B^- \to \bar{\Lambda}_c^- \Xi_c^0$ using a missing-mass technique; the result is ${\cal B}(B^- \to \bar{\Lambda}_c^- \Xi_c^0) = (9.51 \pm 2.10 \pm 0.88) \times 10^{-4}$. We subsequently measure the product branching fractions ${\cal B}(B^- \to \bar{\Lambda}_c^- \Xi_c^0){\cal B}(\Xi_c^0 \to \Xi^- \pi^+)$, ${\cal B}( B^- \to \bar{\Lambda}_c^- \Xi_c^0) {\cal B}(\Xi_c^0 \to \Lambda K^- \pi^+)$, and ${\cal B}( B^- \to \bar{\Lambda}_c^- \Xi_c^0) {\cal B}(\Xi_c^0 \to p K^- K^- \pi^+)$ with improved precision. Dividing these product branching fractions by the result for $B^- \to \bar{\Lambda}_c^- \Xi_c^0$ yields the following branching fractions: ${\cal B}(\Xi_c^0 \to \Xi^- \pi^+)= (1.80 \pm 0.50 \pm 0.14)\%$, ${\cal B}(\Xi_c^0 \to \Lambda K^- \pi^+)=(1.17 \pm 0.37 \pm 0.09)\%$, and ${\cal B}(\Xi_c^0 \to p K^- K^- \pi^+)=(0.58 \pm 0.23 \pm 0.05)\%.$ For the above branching fractions, the first uncertainties are statistical and the second are systematic. Our result for ${\cal B}(\Xi_c^0 \to \Xi^- \pi^+)$ can be combined with $\Xi_c^0$ branching fractions measured relative to $\Xi_c^0 \to \Xi^- \pi^+$ to yield other absolute $\Xi_c^0$ branching fractions., Comment: 7 pages, 3 figures, 1 table; accepted for publication as a Letter in Physical Review Letters
Published: 2018
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31. Search for the rare decay of $B^+ \to \ell^{\,+} \nu_{\ell} \gamma$ with improved hadronic tagging

Author: Gelb, M., Bernlochner, F. U., Goldenzweig, P., Metzner, F., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bansal, V., Behera, P., Beleño, C., Bhuyan, B., Biswal, J., Bobrov, A., Bračko, M., Braun, N., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gemmler, J., Giri, A., Greenwald, D., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kahn, J., Kaliyar, A. B., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, S. H., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Lu, P. -C., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Mrvar, M., Mussa, R., Nakao, M., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Prim, M., Ritter, M., Rostomyan, A., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Simon, F., Solovieva, E., Stanič, S., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Varvell, K. E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanuki, S., Widmann, E., Won, E., Yamamoto, H., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We present the result of the search for the rare $B$ meson decay of $B^+ \to \ell^{\,+} \nu_{\ell} \gamma$ with $\ell =e,\mu$. For the search the full data set recorded by the Belle experiment of $711 \, \mathrm{fb}^{-1}$ integrated luminosity near the $\Upsilon (4S)$ resonance is used. Signal candidates are reconstructed for photon energies $E_{\gamma}$ larger than $1 \, \mathrm{GeV}$ using a novel multivariate tagging algorithm. The novel algorithm fully reconstructs the second $B$ meson produced in the collision using hadronic modes and was specifically trained to recognize the signal signature in combination with hadronic tag-side $B$ meson decays. This approach greatly enhances the performance. Background processes that can mimic this signature, mainly charmless semileptonic decays and continuum processes, are suppressed using multivariate methods. The number of signal candidates is determined by analyzing the missing mass squared distribution as inferred from the signal side particles and the kinematic properties of the tag-side $B$ meson. No significant excess over the background-only hypothesis is observed and upper limits on the partial branching fraction $ \Delta \mathcal{B} $ with $E_{\gamma}> 1 \, \mathrm{GeV}$ individually for electron and muon final states as well as for the average branching fraction of both lepton final states are reported. We find a Bayesian upper limit of $\Delta \mathcal{B}( B^{+} \to \ell^{\, +} \nu_{\ell} \gamma) < 3.0 \times 10^{-6}$ at 90% CL and also report an upper limit on the first inverse moment of the light-cone distribution amplitude of the $B$ meson of $\lambda_B$ at 90% CL.
Published: 2018
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32. Observation of $e^+e^- \to \gamma \chi_{c1}$ and search for $e^+e^- \to \gamma \chi_{c0}, \gamma \chi_{c2},$ and $\gamma\eta_c$ at $\sqrt{s}$ near 10.6 GeV at Belle

Author: Belle Collaboration, Jia, S., Wang, X. L., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bansal, V., Behera, P., Beleno, C., Berger, M., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Cao, L., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Greenwald, D., Haba, J., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jin, Y., Joffe, D., Kahn, J., Kaliyar, A. B., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. Y., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liptak, Z., Liventsev, D., Lu, P. -C., Lubej, M., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyata, H., Mizuk, R., Mori, T., Mussa, R., Nakano, E., Nakao, M., Nath, K. J., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Onuki, Y., Ostrowicz, W., Pakhlova, G., Pal, B., Pardi, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shibata, T. -A., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Tonder, R., Varner, G., Varvell, K. E., Vorobyev, V., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanuki, S., Widmann, E., Won, E., Yamamoto, H., Yang, S. B., Ye, H., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: Using data samples of 89.5~fb$^{-1}$, 711.0~fb$^{-1}$, and 121.4~fb$^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider at center-of-mass energies 10.52 GeV, 10.58 GeV, and 10.867 GeV, respectively, we study the exclusive reactions $e^+e^-\to\gamma\chi_{cJ}$ ($J = 0,~1,~2$) and $e^+e^-\to\gamma\eta_c$. A significant $\gamma \chi_{c1}$ signal is observed for the first time at $\sqrt{s}=10.58$ GeV with a significance of $5.1\sigma$ including systematic uncertainties. No significant excesses for $\gamma \chi_{c0}$, $\gamma \chi_{c2}$, and $\gamma \eta_c$ final states are found, and we set 90\% credibility level upper limits on the Born cross sections ($\sigma_{\rm B}$) at 10.52 GeV, 10.58 GeV, and 10.867~GeV. Together with cross sections measured by BESIII at lower center-of-mass energies, the energy dependency of $\sigma_{\rm B}(e^+e^-\to\gamma\chi_{c1})$ is obtained., Comment: 8 pages, 4 figures
Published: 2018
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33. Search for $CP$ violation with kinematic asymmetries in the $D^0 \to K^+ K^- \pi^+ \pi^-$ decay

Author: Belle Collaboration, Kim, J. B., Won, E., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bansal, V., Behera, P., Beleño, C., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Cao, L., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Frey, A., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Greenwald, D., Guan, Y., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jia, S., Jin, Y., Joffe, D., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lai, Y. -T., Lalwani, K., Lange, J. S., Lee, I. S., Lee, J. K., Lee, J. Y., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liptak, Z., Liventsev, D., Lu, P. -C., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mrvar, M., Mussa, R., Nakano, E., Nakao, M., Nath, K. J., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Pakhlova, G., Pal, B., Pardi, S., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prasanth, K., Prencipe, E., Rabusov, A., Resmi, P. K., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Tao, Y., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Widmann, E., Yamamoto, H., Yang, S. B., Ye, H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We search for $CP$ violation in the singly-Cabibbo-suppressed decay $D^{0}\rightarrow K^{+}K^{-}\pi^{+}\pi^{-}$ using data corresponding to an integrated luminosity of $988\text{ }{\rm fb}^{-1}$ collected by the Belle detector at the KEKB $e^{+}e^{-}$ collider. We measure a set of five kinematically dependent $CP$ asymmetries, of which four asymmetries are measured for the first time. The set of asymmetry measurements can be sensitive to $CP$ violation via interference between the different partial-wave contributions to the decay and performed on other pseudoscalar decays. We find no evidence of $CP$ violation., Comment: 7 pages, 3 figures, 3 tables
Published: 2018
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34. Measurement of the CKM Matrix Element $|V_{cb}|$ from $B^{0} \to D^{*-} \ell^+ \nu_\ell$ at Belle

Author: Waheed, E., Urquijo, P., Adachi, I., Adamczyk, K., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bansal, V., Behera, P., Beleno, C., Bernlochner, F., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bracko, M., Browder, T. E., Campajola, M., Cervenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Carlo, S., Dolezal, Z., Dong, T. V., Dossett, D., Eidelman, S., Epifanov, D., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Grzymkowska, O., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kahn, J., Kaliyar, A. B., Karyan, G., Kawasaki, T., Kim, C. H., Kim, D. Y., Kim, K. T., Kim, S. H., Kinoshita, K., Kodys, P., Korpar, S., Kotchetkov, D., Krizan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, J. Y., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liventsev, D., Lu, P. -C., Luo, T., MacNaughton, J., Masuda, M., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Mussa, R., Nakamura, I., Nakao, M., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, S., Ono, H., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Park, S. -H., Paul, S., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Prim, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Stanic, S., Staric, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Usov, Y., Varner, G., Varvell, K. E., Vinokurova, A., Vossen, A., Wang, C. H., Wang, M. -Z., Wang, P., Won, E., Yang, S. B., Ye, H., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We present a new measurement of the CKM matrix element $|V_{cb}|$ from $B^{0} \to D^{*-} \ell^+ \nu_\ell$ decays, reconstructed with the full Belle data set of $711 \, \rm fb^{-1}$ integrated luminosity. Two form factor parameterizations, originally conceived by the Caprini-Lellouch-Neubert (CLN) and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product $\mathcal{F}(1)\eta_{\rm EW}|V_{cb}|$ and the decay form factors, where $\mathcal{F}(1)$ is the normalization factor and $\eta_{\rm EW}$ is a small electroweak correction. In the CLN parameterization we find $\mathcal{F}(1)\eta_{\rm EW}|V_{cb}| = (35.06 \pm 0.15 \pm 0.56) \times 10^{-3}$, $\rho^{2}=1.106 \pm 0.031 \pm 0.007$, $R_{1}(1)=1.229 \pm 0.028 \pm 0.009$, $R_{2}(1)=0.852 \pm 0.021 \pm 0.006$. For the BGL parameterization we obtain $\mathcal{F}(1)\eta_{\rm EW}|V_{cb}|= (34.93 \pm 0.23 \pm 0.59)\times 10^{-3}$, which is consistent with the World Average when correcting for $\mathcal{F}(1)\eta_{\rm EW}$. The branching fraction of $B^{0} \to D^{*-} \ell^+ \nu_\ell$ is measured to be $\mathcal{B}(B^{0}\rightarrow D^{*-}\ell^{+}\nu_{\ell}) = (4.90 \pm 0.02 \pm 0.16)\%$. We also present a new test of lepton flavor universality violation in semileptonic $B$ decays, $\frac{{\cal B }(B^0 \to D^{*-} e^+ \nu)}{{\cal B }(B^0 \to D^{*-} \mu^+ \nu)} = 1.01 \pm 0.01 \pm 0.03~$. The errors correspond to the statistical and systematic uncertainties respectively. This is the most precise measurement of $\mathcal{F}(1)\eta_{\rm EW}|V_{cb}|$ and form factors to date and the first experimental study of the BGL form factor parameterization in an experimental measurement.
Published: 2018
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35. Study of charmless decays $B^{\pm} \to K^{0}_{S} K^{0}_{S} h^{\pm}$ ($h=K,\pi$) at Belle

Author: The Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Ban, Y., Bansal, V., Barberio, E., Barrett, M., Bartel, W., Behera, P., Beleno, C., Belous, K., Berger, M., Bernlochner, F., Besson, D., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bloomfield, T., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bracko, M., Braun, N., Breibeck, F., Brodzicka, J., Browder, T. E., Cao, L., Caria, G., Cervenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Danilov, M., Dash, N., Di Carlo, S., Dingfelder, J., Dolezal, Z., Dong, T. V., Dossett, D., Drasal, Z., Drutskoy, A., Dubey, S., Dutta, D., Eidelman, S., Epifanov, D., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Glattauer, R., Goh, Y. M., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hamer, 18 P., Hara, K., Hara, T., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Higuchi, T., Hirose, S., Horiguchi, T., Hoshi, Y., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itagaki, K., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, E., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kodys, P., Koga, Y., Konno, T., Korpar, S., Kotchetkov, D., Kouzes, R. T., Krizan, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnicka, P., Kwon, Y. -J., Lai, Y. -T., Lange, J. S., Lee, I. S., Lee, S. C., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Limosani, A., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lu, P. -C., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Matyja, A., McNeil, J. T., Merola, M., Metzner, F., Mikami, Y., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Muller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, H., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Ono, Y., Onuki, Y., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Palka, H., Panzenbock, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Paul, S., Pavelkin, I., Pedlar, T. K., Peng, T., Pesantez, L., Pestotnik, R., Peters, M., Piilonen, L. E., Poluektov, A., Popov, V., Prasanth, K., Prencipe, E., Prim, M., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribezl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Rummel, S., Russo, G., Sahoo, D., Sahoo, H., Saito, T., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schluter, T., Schneider, O., Schnell, G., Schonmeier, P., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Sokolov, A., Soloviev, Y., Solovieva, E., Stanic, S., Staric, M., Steder, M., Stottler, Z., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Suzuki, Z., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Tikhomirov, I., Trabelsi, K., Tsuboyama, T., Uchida, M., Uchida, T., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Tonder, R., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, C. C., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: We report a search for charmless hadronic decays of charged $B$ mesons to the final states $K^{0}_{S} K^{0}_{S} K^{\pm}$ and $K^{0}_{S} K^{0}_{S} \pi^{\pm}$ . The results are based on a $711 {fb}^{-1}$ data sample that contains $772 \times 10^6$ $B \bar{B}$ pairs, and was collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. For $B^{\pm} \to K^{0}_{S} K^{0}_{S} K^{\pm}$ decays, the measured branching fraction and direct $CP$ asymmetry are $[10.64\pm0.49(stat)\pm 0.44(syst)]\times10^{-6}$ and [$-0.6\pm3.9(stat)\pm 3.4(syst)$] %, respectively. In the absence of a statistically significant signal for $B^{\pm}\to K^{0}_{S} K^{0}_{S} \pi^{\pm}$, we set the 90 % confidence-level upper limit on its branching fraction at $1.14 \times 10^{-6}$.
Published: 2018

36. Measurements of branching fraction and $CP$ asymmetry of the $\bar{B}^{0}(B^{0})\to K^{0}_{S}K^{\mp}\pi^{\pm}$ decay at Belle

Author: Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Ban, Y., Bansal, V., Barberio, E., Barrett, M., Bartel, W., Behera, P., Beleño, C., Belous, K., Berger, M., Bernlochner, F., Besson, D., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bloomfield, T., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Braun, N., Breibeck, F., Brodzicka, J., Browder, T. E., Cao, L., Caria, G., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Danilov, M., Dash, N., Di Carlo, S., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Drásal, Z., Drutskoy, A., Dubey, S., Dutta, D., Eidelman, S., Epifanov, D., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Glattauer, R., Goh, Y. M., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hamer, P., Hara, K., Hara, T., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Higuchi, T., Hirose, S., Horiguchi, T., Hoshi, Y., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huang, K., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itagaki, K., Itoh, R., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, E., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, K. T., Kim, S. H., Kim, S. K., Kim, Y. J., Kimmel, T., Kindo, H., Kinoshita, K., Kleinwort, C., Klucar, J., Kobayashi, N., Kodyš, P., Koga, Y., Konno, T., Korpar, S., Kotchetkov, D., Kouzes, R. T., Križan, P., Kroeger, R., Krohn, J. -F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lange, J. S., Lee, I. S., Lee, S. C., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Limosani, A., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lu, P. -C., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Matyja, A., McNeil, J. T., Merola, M., Metzner, F., Mikami, Y., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, H., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Ono, Y., Onuki, Y., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Palka, H., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Paul, S., Pavelkin, I., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Piilonen, L. E., Poluektov, A., Popov, V., Prasanth, K., Prencipe, E., Prim, M., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Ribežl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Rummel, S., Russo, G., Sahoo, D., Sahoo, H., Saito, T., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schönmeier, P., Schram, M., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Stottler, Z., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Suzuki, Z., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Teramoto, Y., Tikhomirov, I., Trabelsi, K., Tsuboyama, T., Uchida, M., Uchida, T., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Tonder, R., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamashita, Y., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, C. C., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: We report the measurement of the branching fraction and $CP$ asymmetry for the $\bar{B}^{0}(B^{0})\to K^{0}_{S}K^{\mp}\pi^{\pm}$ decay. The analysis is performed on a data sample of 711 $\rm{fb}^{-1}$ collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. We obtain a branching fraction of $(3.60\pm0.33\pm0.15)\times10^{-6}$ and an $\mathcal{A}_{CP}$ of $(-8.5\pm8.9\pm0.2)\%$, where the first uncertainties are statistical and the second are systematic. Hints of peaking structures are also observed in the differential branching fraction as functions of Dalitz variables., Comment: 13 pages, 10 figures, ICHEP 2018
Published: 2018

37. Search for $\Upsilon(1S,2S) \to Z^{+}_{c}Z^{(\prime) -}_{c}$ and $e^{+}e^{-} \to Z^{+}_{c}Z^{(\prime) -}_{c}$ at $\sqrt{s}$ = 10.52, 10.58, and 10.867 GeV

Author: Belle Collaboration, Jia, S., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bansal, V., Behera, P., Beleño, C., Bhuyan, B., Bilka, T., Biswal, J., Bozek, A., Bračko, M., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Doležal, Z., Eidelman, S., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Guido, E., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hedges, M. T., Hirose, S., Hou, W. -S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jin, Y., Julius, T., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumita, T., Kwon, Y. -J., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Moon, H. K., Mussa, R., Nakano, E., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nishida, S., Ogawa, S., Okuno, S., Ono, H., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Ritter, M., Rostomyan, A., Russo, G., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Uno, S., Urquijo, P., Usov, Y., Van Hulse, C., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Widmann, E., Won, E., Ye, H., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: The first search for $Z_{c}$ pair production in $\Upsilon(1S)$ and $\Upsilon(2S)$ decays and in $e^{+}e^{-}$ annihilation at $\sqrt{s}$ = 10.52, 10.58, and 10.867 GeV is conducted using data collected with the Belle detector at the KEKB asymmetric energy electron-positron collider. No significant signals are observed in any of the studied modes, and the 90\% credibility level upper limits on their product branching fractions in $\Upsilon(1S)$ and $\Upsilon(2S)$ decays (${\cal B}(\Upsilon(1S,2S)\to Z^{+}_{c}Z^{(\prime) -}_{c})\times{\cal B}(Z^{+}_{c}\to\pi^{+}+c\bar c)$ ($c\bar c=J/\psi$, $\chi_{c1}(1P)$, $\psi(2S)$)) and the product of Born cross section and branching fraction for $e^{+}e^{-} \to Z^{+}_{c}Z^{(\prime) -}_{c}$ ($\sigma(e^+e^- \to Z^{+}_{c}Z^{(\prime) -}_{c})\times {\cal B}(Z^{+}_{c} \to \pi^+ +c\bar c)$) at $\sqrt{s}$ = 10.52, 10.58, and 10.867 GeV are determined. Here, $Z_{c}$ refers to the $Z_{c}(3900)$ and $Z_{c}(4200)$ observed in the $\pi J/\psi$ final state, the $Z_{c1}(4050)$ and $Z_{c2}(4250)$ in the $\pi\chi_{c1}(1P)$ state, and the $Z_{c}(4050)$ and $Z_{c}(4430)$ in the $\pi\psi(2S)$ state., Comment: 16 pages, 10 figures, 6 tables
Published: 2018
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38. Measurement of $\cos{2\beta}$ in $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} \pi^{+} \pi^{-}$ decays by a combined time-dependent Dalitz plot analysis of BaBar and Belle data

Author: BaBar, The, Collaborations, Belle, Adachi, I., Adye, T., Ahmed, H., Ahn, J. K., Aihara, H., Akar, S., Alam, M. S., Albert, J., Anulli, F., Arnaud, N., Asner, D. M., Aston, D., Atmacan, H., Aushev, T., Ayad, R., Badhrees, I., Bakich, A. M., Banerjee, Sw., Bansal, V., Barlow, R. J., Batignani, G., Beaulieu, A., Behera, P., Bellis, M., Ben-Haim, E., Bernard, D., Bernlochner, F. U., Bettarini, S., Bettoni, D., Bevan, A. J., Bhardwaj, V., Bhuyan, B., Bianchi, F., Biasini, M., Biswal, J., Blinov, V. E., Bomben, M., Bondar, A., Bonneaud, G. R., Bozek, A., Bozzi, C., Bračko, M., Browder, T. E., Brown, D. N., Bünger, C., Burchat, P. R., Buzykaev, A. R., Calabrese, R., Calcaterra, A., Calderini, G., Di Carlo, S., Carpinelli, M., Cartaro, C., Casarosa, G., Cenci, R., Chao, D. S., Chauveau, J., Cheaib, R., Chen, A., Chen, C., Cheng, C. H., Cheon, B. G., Chilikin, K., Cho, K., Choi, Y., Choudhury, S., Chrzaszcz, M., Cibinetto, G., Cinabro, D., Cochran, J., Coleman, J. P., Convery, M. R., Cowan, G., Cowan, R., Cremaldi, L., Cunliffe, S., Dash, N., Davier, M., Davis, C. L., De Mori, F., De Nardo, G., Denig, A. G., de Sangro, R., Dey, B., Di Lodovico, F., Dittrich, S., Doležal, Z., Dorfan, J., Drásal, Z., Druzhinin, V. P., Dunwoodie, W., Ebert, M., Echenard, B., Eidelman, S., Eigen, G., Eisner, A. M., Emery, S., Epifanov, D., Ernst, J. A., Faccini, R., Fast, J. E., Feindt, M., Ferrarotto, F., Ferroni, F., Field, R. C., Filippi, A., Finocchiaro, G., Fioravanti, E., Flood, K. T., Forti, F., Fritsch, M., Fulsom, B. G., Gabathuler, E., Gamba, D., Garg, R., Garmash, A., Gary, J. W., Garzia, I., Gaur, V., Gaz, A., Gelb, M., Gershon, T. J., Gioi, L. Li, Giorgi, M. A., Giri, A., Godang, R., Goldenzweig, P., Golob, B., Golubev, V. B., Gorodeisky, R., Gradl, W., Graham, M. T., Grauges, E., Griessinger, K., Gritsan, A. V., Grünberg, O., Guido, E., Guttman, N., Hafner, A., Hara, T., Harrison, P. F., Hast, C., Hayasaka, K., Hearty, C., Heck, M., Hedges, M. T., Heß, M., Hirose, S., Hitlin, D. G., Honscheid, K., Hou, W. -S., Huard, Z., Van Hulse, C., Hutchcroft, D. E., Inami, K., Inguglia, G., Innes, W. R., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Izen, J. M., Jacobs, W. W., Jawahery, A., Jessop, C. P., Jia, S., Jin, Y., Joo, K. K., Julius, T., Kaliyar, A. B., Kang, K. H., Karyan, G., Kass, R., Kichimi, H., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kim, J., Kim, P., King, G. J., Kinoshita, K., Koch, H., Kodyš, P., Kolomensky, Yu. G., Korpar, S., Kotchetkov, D., Kowalewski, R., Kravchenko, E. A., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lacker, H. M., Lafferty, G. D., Lanceri, L., Lange, J. S., Lange, D. J., Lankford, A. J., Latham, T. E., Leddig, T., Diberder, F. Le, Lee, I. S., Lee, S. C., Lees, J. P., Leith, D. W. G. S., Li, L. K., Li, Y. B., Li, Y., Libby, J., Liventsev, D., Lockman, W. S., Long, O., LoSecco, J. M., Lou, X. C., Lubej, M., Lueck, T., Luitz, S., Luo, T., Luppi, E., Lusiani, A., Lutz, A. M., MacFarlane, D. B., MacNaughton, J., Mallik, U., Manoni, E., Marchiori, G., Margoni, M., Martellotti, S., Martinez-Vidal, F., Masuda, M., Matsuda, T., Mattison, T. S., Matvienko, D., McKenna, J. A., Meadows, B. T., Merola, M., Miyabayashi, K., Miyashita, T. S., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Muller, D. R., Müller, T., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Nayak, M., Neal, H., Neri, N., Nisar, N. K., Nishida, S., Nugent, I. M., Oberhof, B., Ocariz, J., Ogawa, S., Ongmongkolkul, P., Ono, H., Onuchin, A. P., Oyanguren, A., Pakhlov, P., Pakhlova, G., Pal, B., Palano, A., Palombo, F., Vazquez, W. Panduro, Paoloni, E., Pardi, S., Park, H., Passaggio, S., Patrignani, C., Patteri, P., Paul, S., Pavelkin, I., Payne, D. J., Pedlar, T. K., Peimer, D. R., Peruzzi, I. M., Piccolo, M., Piilonen, L. E., Pilloni, A., Piredda, G., Poireau, V., Porter, F. C., Posocco, M., Prell, S., Prepost, R., Puccio, E. M. T., Purohit, M. V., Pushpawela, B. G., Rama, M., Randle-Conde, A., Ratcliff, B. N., Raven, G., Resmi, P. K., Ritchie, J. L., Ritter, M., Rizzo, G., Roberts, D. A., Robertson, S. H., Röhrken, M., Roney, J. M., Roodman, A., Rossi, A., Rotondo, M., Rozanska, M., Russo, G., Sacco, R., Said, S. Al, Sakai, Y., Sandilya, S., Santelj, L., Santoro, V., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schroeder, T., Schubert, K. R., Schwanda, C., Schwartz, A. J., Schwitters, R. F., Sciacca, C., Seddon, R. M., Seino, Y., Sekula, S. J., Senyo, K., Seon, O., Serednyakov, S. I., Sevior, M. E., Shebalin, V., Shibata, T. -A., Shimizu, N., Shiu, J. -G., Simi, G., Simon, F., Simonetto, F., Skovpen, Yu. I., Smith, J. G., Smith, A. J. S., So, R. Y., Sobie, R. J., Soffer, A., Sokoloff, M. D., Solodov, E. P., Solovieva, E., Spanier, S. M., Starič, M., Stroili, R., Sullivan, M. K., Sumisawa, K., Sumiyoshi, T., Summers, D. J., Sun, L., Takizawa, M., Tamponi, U., Tanida, K., Taras, P., Tasneem, N., Tenchini, F., Tisserand, V., Todyshevx, K. Yu., Touramanis, C., Uchida, M., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Varner, G., Vasseur, G., Va'vra, J., Červenkov, D., Verderi, M., Vitale, L., Vorobyev, V., Voß, C., Wagner, S. R., Waheed, E., Waldi, R., Walsh, J. J., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wilson, F. F., Wilson, J. R., Wisniewski, W. J., Won, E., Wormser, G., Wright, D. M., Wu, S. L., Yuan, C. Z., Yusa, Y., Zakharov, S., Zallo, A., Zani, L., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Subjects: High Energy Physics - Experiment
Abstract: We report measurements of $\sin{2\beta}$ and $\cos{2\beta}$ from a time-dependent Dalitz plot analysis of $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} \pi^{+} \pi^{-}$ decays, where the light unflavored and neutral hadron $h^{0}$ is a $\pi^{0}$, $\eta$, or $\omega$ meson. The analysis is performed with a combination of the final data sets of the \babar\ and Belle experiments containing $471 \times 10^{6}$ and $772 \times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon\left(4S\right)$ resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. We measure $\sin{2\beta} = 0.80 \pm 0.14 \,(\rm{stat.}) \pm 0.06 \,(\rm{syst.}) \pm 0.03 \,(\rm{model})$ and $\cos{2\beta} = 0.91 \pm 0.22 \,(\rm{stat.}) \pm 0.09 \,(\rm{syst.}) \pm 0.07 \,(\rm{model})$. The result for the direct measurement of the angle is $\beta = \left( 22.5 \pm 4.4 \,(\rm{stat.}) \pm 1.2 \,(\rm{syst.}) \pm 0.6 \,(\rm{model}) \right)^{\circ}$. The last quoted uncertainties are due to the composition of the $D^{0} \to K_{S}^{0} \pi^{+} \pi^{-}$ decay amplitude model, which is newly established by a Dalitz plot amplitude analysis of a high-statistics $e^{+}e^{-} \to c\bar{c}$ data sample as part of this analysis. We find the first evidence for $\cos2\beta>0$ at the level of $3.7$ standard deviations. The measurement excludes the trigonometric multifold solution $\pi/2 - \beta = (68.1 \pm 0.7)^{\circ}$ at the level of $7.3$ standard deviations and therefore resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle. The hypothesis of $\beta = 0^{\circ}$ is ruled out at the level of $5.1$ standard deviations, and thus CP violation is observed in $B^{0} \to D^{(*)} h^{0}$ decays., Comment: To be submitted to Physical Review D
Published: 2018
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39. First evidence for $\cos 2\beta>0$ and resolution of the CKM Unitarity Triangle ambiguity by a time-dependent Dalitz plot analysis of $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} \pi^{+} \pi^{-}$ decays

Author: BaBar, The, Collaborations, Belle, Adachi, I., Adye, T., Ahmed, H., Ahn, J. K., Aihara, H., Akar, S., Alam, M. S., Albert, J., Anulli, F., Arnaud, N., Asner, D. M., Aston, D., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Banerjee, Sw., Bansal, V., Barlow, R. J., Batignani, G., Beaulieu, A., Behera, P., Bellis, M., Ben-Haim, E., Bernard, D., Bernlochner, F. U., Bettarini, S., Bettoni, D., Bevan, A. J., Bhardwaj, V., Bhuyan, B., Bianchi, F., Biasini, M., Biswal, J., Blinov, V. E., Bomben, M., Bondar, A., Bonneaud, G. R., Bozek, A., Bozzi, C., Bračko, M., Browder, T. E., Brown, D. N., Bünger, C., Burchat, P. R., Buzykaev, A. R., Calabrese, R., Calcaterra, A., Calderini, G., Di Carlo, S., Carpinelli, M., Cartaro, C., Casarosa, G., Cenci, R., Chao, D. S., Chauveau, J., Cheaib, R., Chen, A., Chen, C., Cheng, C. H., Cheon, B. G., Chilikin, K., Cho, K., Choi, Y., Choudhury, S., Chrzaszcz, M., Cibinetto, G., Cinabro, D., Cochran, J., Coleman, J. P., Convery, M. R., Cowan, G., Cowan, R., Cremaldi, L., Cunliffe, S., Dash, N., Davier, M., Davis, C. L., De Mori, F., De Nardo, G., Denig, A. G., de Sangro, R., Dey, B., Di Lodovico, F., Dittrich, S., Doležal, Z., Dorfan, J., Drásal, Z., Druzhinin, V. P., Dunwoodie, W., Ebert, M., Echenard, B., Eidelman, S., Eigen, G., Eisner, A. M., Emery, S., Epifanov, D., Ernst, J. A., Faccini, R., Fast, J. E., Feindt, M., Ferber, T., Ferrarotto, F., Ferroni, F., Field, R. C., Filippi, A., Finocchiaro, G., Fioravanti, E., Flood, K. T., Forti, F., Fritsch, M., Fulsom, B. G., Gabathuler, E., Gamba, D., Garg, R., Garmash, A., Gary, J. W., Garzia, I., Gaur, V., Gaz, A., Gelb, M., Gershon, T. J., Gioi, L. Li, Giorgi, M. A., Giri, A., Godang, R., Goldenzweig, P., Golob, B., Golubev, V. B., Gorodeisky, R., Gradl, W., Graham, M. T., Grauges, E., Griessinger, K., Gritsan, A. V., Grünberg, O., Guan, Y., Guido, E., Guttman, N., Haba, J., Hafner, A., Hara, T., Harrison, P. F., Hast, C., Hayasaka, K., Hayashii, H., Hearty, C., Heck, M., Hedges, M. T., Heß, M., Hirose, S., Hitlin, D. G., Honscheid, K., Hou, W. -S., Hsu, C. -L., Huard, Z., Van Hulse, C., Hutchcroft, D. E., Inami, K., Inguglia, G., Innes, W. R., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Izen, J. M., Jacobs, W. W., Jawahery, A., Jessop, C. P., Jia, S., Jin, Y., Joo, K. K., Julius, T., Kaliyar, A. B., Kang, K. H., Karyan, G., Kass, R., Kichimi, H., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kim, J., Kim, P., King, G. J., Kinoshita, K., Koch, H., Kodyš, P., Kolomensky, Yu. G., Korpar, S., Kotchetkov, D., Kowalewski, R., Kravchenko, E. A., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lacker, H. M., Lafferty, G. D., Lanceri, L., Lange, J. S., Lange, D. J., Lankford, A. J., Latham, T. E., Leddig, T., Diberder, F. Le, Lee, I. S., Lee, S. C., Lees, J. P., Leith, D. W. G. S., Li, L. K., Li, Y. B., Li, Y., Libby, J., Liventsev, D., Lockman, W. S., Long, O., LoSecco, J. M., Lou, X. C., Lubej, M., Lueck, T., Luitz, S., Luo, T., Luppi, E., Lusiani, A., Lutz, A. M., MacFarlane, D. B., MacNaughton, J., Mallik, U., Manoni, E., Marchiori, G., Margoni, M., Martellotti, S., Martinez-Vidal, F., Masuda, M., Matsuda, T., Mattison, T. S., Matvienko, D., McKenna, J. A., Meadows, B. T., Merola, M., Miyabayashi, K., Miyashita, T. S., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Muller, D. R., Müller, T., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Nayak, M., Neal, H., Neri, N., Nisar, N. K., Nishida, S., Nugent, I. M., Oberhof, B., Ocariz, J., Ogawa, S., Ongmongkolkul, P., Ono, H., Onuchin, A. P., Onuki, Y., Oyanguren, A., Pakhlov, P., Pakhlova, G., Pal, B., Palano, A., Palombo, F., Vazquez, W. Panduro, Paoloni, E., Pardi, S., Park, H., Passaggio, S., Patrignani, C., Patteri, P., Paul, S., Pavelkin, I., Payne, D. J., Pedlar, T. K., Peimer, D. R., Peruzzi, I. M., Pestotnik, R., Piccolo, M., Piilonen, L. E., Pilloni, A., Piredda, G., Poireau, V., Popov, V., Porter, F. C., Posocco, M., Prell, S., Prepost, R., Puccio, E. M. T., Purohit, M. V., Pushpawela, B. G., Rama, M., Randle-Conde, A., Ratcliff, B. N., Raven, G., Resmi, P. K., Ritchie, J. L., Ritter, M., Rizzo, G., Roberts, D. A., Robertson, S. H., Röhrken, M., Roney, J. M., Roodman, A., Rossi, A., Rotondo, M., Rozanska, M., Russo, G., Sacco, R., Said, S. Al, Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Santoro, V., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schroeder, T., Schubert, K. R., Schwanda, C., Schwartz, A. J., Schwitters, R. F., Sciacca, C., Seddon, R. M., Seino, Y., Sekula, S. J., Senyo, K., Seon, O., Serednyakov, S. I., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shimizu, N., Shiu, J. -G., Simi, G., Simon, F., Simonetto, F., Skovpen, Yu. I., Smith, J. G., Smith, A. J. S., So, R. Y., Sobie, R. J., Soffer, A., Sokoloff, M. D., Solodov, E. P., Solovieva, E., Spanier, S. M., Starič, M., Stroili, R., Sullivan, M. K., Sumisawa, K., Sumiyoshi, T., Summers, D. J., Sun, L., Takizawa, M., Tamponi, U., Tanida, K., Taras, P., Tasneem, N., Tenchini, F., Tisserand, V., Todyshevx, K. Yu., Touramanis, C., Uchida, M., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Varner, G., Vasseur, G., Va'vra, J., Červenkov, D., Verderi, M., Vitale, L., Vorobyev, V., Voß, C., Wagner, S. R., Waheed, E., Waldi, R., Walsh, J. J., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, Y., Wilson, F. F., Wilson, J. R., Wisniewski, W. J., Won, E., Wormser, G., Wright, D. M., Wu, S. L., Ye, H., Yuan, C. Z., Yusa, Y., Zakharov, S., Zallo, A., Zani, L., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Subjects: High Energy Physics - Experiment
Abstract: We present first evidence that the cosine of the CP-violating weak phase $2\beta$ is positive, and hence exclude trigonometric multifold solutions of the CKM Unitarity Triangle using a time-dependent Dalitz plot analysis of $B^{0} \to D^{(*)} h^{0}$ with $D \to K_{S}^{0} \pi^{+} \pi^{-}$ decays, where $h^{0} \in \{\pi^{0}, \eta, \omega \}$ denotes a light unflavored and neutral hadron. The measurement is performed combining the final data sets of the BaBar and Belle experiments collected at the $\Upsilon(4S)$ resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain $( 471 \pm 3 )\times 10^6\, B\bar{B}$ pairs recorded by the BaBar detector and $( 772 \pm 11 )\times 10^6\, B\bar{B}$ pairs recorded by the Belle detector. The results of the measurement are $\sin{2\beta} = 0.80 \pm 0.14 \,(\rm{stat.}) \pm 0.06 \,(\rm{syst.}) \pm 0.03 \,(\rm{model})$ and $\cos{2\beta} = 0.91 \pm 0.22 \,(\rm{stat.}) \pm 0.09 \,(\rm{syst.}) \pm 0.07 \,(\rm{model})$. The result for the direct measurement of the angle $\beta$ of the CKM Unitarity Triangle is $\beta = \left( 22.5 \pm 4.4 \,(\rm{stat.}) \pm 1.2 \,(\rm{syst.}) \pm 0.6 \,(\rm{model}) \right)^{\circ}$. The quoted model uncertainties are due to the composition of the $D^{0} \to K_{S}^{0} \pi^{+} \pi^{-}$ decay amplitude model, which is newly established by performing a Dalitz plot amplitude analysis using a high-statistics $e^{+}e^{-} \to c\bar{c}$ data sample. CP violation is observed in $B^{0} \to D^{(*)} h^{0}$ decays at the level of $5.1$ standard deviations. The significance for $\cos{2\beta}>0$ is $3.7$ standard deviations. The trigonometric multifold solution $\pi/2 - \beta = (68.1 \pm 0.7)^{\circ}$ is excluded at the level of $7.3$ standard deviations. The measurement resolves an ambiguity in the determination of the apex of the CKM Unitarity Triangle., Comment: To be submitted to Physical Review Letters
Published: 2018
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40. Observation of $\Upsilon(4S)\to \eta' \Upsilon(1S)$

Author: Belle Collaboration, Guido, E., Mussa, R., Tamponi, U., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Berger, M., Bhardwaj, V., Biswal, J., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Carlo, S., Doležal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Haba, J., Hara, T., Hayashii, H., Hedges, M. T., Hou, W. -S., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jia, S., Jin, Y., Julius, T., Kang, K. H., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumar, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Nayak, M., Niiyama, M., Nishida, S., Ogawa, S., Ono, H., Ostrowicz, W., Pakhlova, G., Pal, B., Pardi, S., Park, C. W., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sanuki, T., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sokolov, A., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Usov, Y., Van Hulse, C., Varner, G., Vinokurova, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Widmann, E., Won, E., Ye, H., Yelton, J., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We report the first observation of the hadronic transition $\Upsilon(4S)\to\eta'\Upsilon(1S)$, using 496 fb$^{-1}$ data collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. We reconstruct the $\eta'$ meson through its decays to $\rho^0\gamma$ and to $\pi^+\pi^-\eta$, with $\eta\to\gamma\gamma$. We measure: ${\cal B}(\Upsilon(4S)\to\eta'\Upsilon(1S))=(3.43\pm 0.88 {\rm(stat.)} \pm 0.21 {\rm(syst.)})\times10^{-5}$, with a significance of 5.7$\sigma$., Comment: 6 pages, 4 figures. Submitted to PRL
Published: 2018
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41. Measurement of Time-dependent $CP$ Asymmetries in $B^{0}\to K_S^0 \eta \gamma$ Decays

Author: Nakano, H., Ishikawa, A., Sumisawa, K., Yamamoto, H., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bansal, V., Behera, P., Beleno, C., Bhuyan, B., Bilka, T., Biswal, J., Bozek, A., Bracko, M., Cervenkov, D., Chekelian, V., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Dolezal, Z., Eidelman, S., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Guan, Y., Guido, E., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hedges, M. T., Hirose, S., Hou, W. -S., Iijima, T., Inami, K., Inguglia, G., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Julius, T., Kaliyar, A. B., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., Kodys, P., Korpar, S., Kotchetkov, D., Krizan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumita, T., Kwon, Y. -J., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nishida, S., Ogawa, S., Okuno, S., Ono, H., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Ritter, M., Rostomyan, A., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shimizu, N., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Stanic, S., Staric, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Uno, S., Urquijo, P., Usov, Y., Van Hulse, C., Varner, G., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Widmann, E., Won, E., Ye, H., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Subjects: High Energy Physics - Experiment
Abstract: We report a measurement of time-dependent $CP$ violation parameters in ${B^0 \to K_S^0 \eta \gamma}$ decays. The study is based on a data sample, containing ${772 \times 10^6 B\bar{B}}$ pairs, that was collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. We obtain the $CP$ violation parameters of ${{\cal S} = -1.32 \pm 0.77 {\rm (stat.)} \pm 0.36{\rm (syst.)}}$ and ${{\cal A} = -0.48 \pm 0.41 {\rm (stat.)} \pm 0.07{\rm (syst.)}}$ for the invariant mass of the $K_S^0 \eta$ system up to 2.1 GeV/$c^2$., Comment: 18pages, 9figures. the version resubmitted to PRD
Published: 2018
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42. Observation of $\Xi_{c}(2930)^0$ and updated measurement of $B^{-} \to K^{-} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}$ at Belle

Author: Belle Collaboration, Li, Y. B., Shen, C. P., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Ban, Y., Bansal, V., Behera, P., Berger, M., Bhardwaj, V., Bhuyan, B., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Doležal, Z., Drásal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Guido, E., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joo, K. K., Julius, T., Karyan, G., Kato, Y., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lee, I. S., Lee, S. C., Li, L. K., Gioi, L. Li, Libby, J., Liventsev, D., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mrvar, M., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nishida, S., Ogawa, S., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, C. W., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Shebalin, V., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Van Hulse, C., Varner, G., Vorobyev, V., Vossen, A., Waheed, E., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Widmann, E., Won, E., Ye, H., Yelton, J., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: We report the first observation of the $\Xi_{c}(2930)^0$ charmed-strange baryon with a significance greater than 5$\sigma$. The $\Xi_{c}(2930)^0$ is found in its decay to $K^- \Lambda_{c}^+$ in $B^{-} \to K^{-} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}$ decays. The measured mass and width are $[2928.9 \pm 3.0(\rm stat.)^{+0.9}_{-12.0}(\rm syst.)]$ MeV/$c^{2}$ and $[19.5 \pm 8.4(\rm stat.) ^{+5.9}_{-7.9}(\rm syst.)]$ MeV, respectively, and the product branching fraction is ${\cal B}(B^{-} \to \Xi_{c}(2930)^0 \bar{\Lambda}_{c}^{-}) {\cal B}(\Xi_{c}(2930)^0 \to K^- \Lambda_{c}^{+})=[1.73 \pm 0.45(\rm stat.) \pm 0.21(\rm syst.)]\times 10^{-4}$. We also measure ${\cal B}(B^{-} \to K^{-} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}) = [4.80 \pm 0.43(\rm stat.) \pm 0.60(\rm syst.)] \times 10^{-4}$ with improved precision, and search for the charmonium-like state $Y(4660)$ and its spin partner, $Y_{\eta}$, in the $\Lambda_{c}^{+}\bar{\Lambda}_{c}^{-}$ invariant mass spectrum. No clear signals of the $Y(4660)$ nor its spin partner are observed and the 90\% credibility level (C.L.) upper limits on their production rates are determined. These measurements are obtained from a sample of $(772\pm11)\times 10^{6} B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance by the Belle detector at the KEKB asymmetric energy electron-positron collider., Comment: 7 pages, 5 figures; accepted for publication in European Physical Journal C
Published: 2017
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43. Measurement of the tau Michel parameters $\bar{\eta}$ and $\xi\kappa$ in the radiative leptonic decay $\tau^- \rightarrow \ell^- \nu_{\tau} \bar{\nu}_{\ell}\gamma$

Author: The Belle Collaboration, Shimizu, N., Aihara, H., Epifanov, D., Abdesselam, A., Adachi, I., Adamczyk, K., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Aso, T., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bala, A., Ban, Y., Bansal, V., Barberio, E., Barrett, M., Bartel, W., Bay, A., Behera, P., Belhorn, M., Belous, K., Berger, M., Bernlochner, F., Besson, D., Bhardwaj, V., Bhuyan, B., Biswal, J., Bloomfield, T., Blyth, S., Bobrov, A., Bondar, A., Bonvicini, G., Bookwalter, C., Boulahouache, C., Bozek, A., Bračko, M., Braun, N., Breibeck, F., Brodzicka, J., Browder, T. E., Waheed, E., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, P., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Crnkovic, J., Dalseno, J., Danilov, M., Dash, N., Di Carlo, S., Dingfelder, J., Doležal, Z., Dossett, D., Drásal, Z., Drutskoy, A., Dubey, S., Dutta, D., Dutta, K., Eidelman, S., Farhat, H., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Gillard, R., Giordano, F., Glattauer, R., Goh, Y. M., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hamer, P., Han, Y. L., Hara, K., Hara, T., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Higuchi, T., Himori, S., Hirose, S., Horiguchi, T., Hoshi, Y., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huschle, M., Hyun, H. J., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itagaki, K., Itoh, R., Iwabuchi, M., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, E., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, S. H., Kim, S. K., Kim, Y. J., Kinoshita, K., Kleinwort, C., Klucar, J., Ko, B. R., Kobayashi, N., Koblitz, S., Kodyš, P., Koga, Y., Korpar, S., Kotchetkov, D., Kouzes, R. T., Križan, P., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lange, J. S., Lee, D. H., Lee, I. S., Lee, S. -H., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L., Li, X., Li, Y., Gioi, L. Li, Libby, J., Limosani, A., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Lukin, P., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Matyja, A., McOnie, S., Merola, M., Metzner, F., Mikami, Y., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Mohapatra, D., Moll, A., Moon, H. K., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagamine, T., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, H., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Nedelkovska, E., Negishi, K., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Nozaki, T., Ogawa, A., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Ono, Y., Onuki, Y., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Palka, H., Panzenböck, E., Pardi, S., Park, C. -S., Park, C. W., Park, H., Park, K. S., Paul, S., Peak, L. S., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Petrič, M., Piilonen, L. E., Poluektov, A., Prasanth, K., Prim, M., Prothmann, K., Pulvermacher, C., Purohit, M. V., Rauch, J., Reisert, B., Ribežl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Rummel, S., Ryu, S., Sahoo, H., Saito, T., Sakai, K., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schönmeier, P., Schram, M., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smerkol, P., Sohn, Y. -S., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Suzuki, K., Suzuki, S., Suzuki, S. Y., Suzuki, Z., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Taylor, G. N., Tenchini, F., Teramoto, Y., Tikhomirov, I., Trabelsi, K., Trusov, V., Tsuboyama, T., Uchida, M., Uchida, T., Uehara, S., Ueno, K., Uglov, T., Unno, Y., Uno, S., Uozumi, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Wang, B., Wang, C. H., Wang, J., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Wedd, R., Wehle, S., White, E., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamaoka, J., Yamashita, Y., Yamauchi, M., Yashchenko, S., Ye, H., Yelton, J., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Ziegler, M., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: We present a measurement of the Michel parameters of the $\tau$ lepton, $\bar{\eta}$ and $\xi\kappa$, in the radiative leptonic decay $\tau^- \rightarrow \ell^- \nu_{\tau} \bar{\nu}_{\ell} \gamma$ using 711~f$\mathrm{b}^{-1}$ of collision data collected with the Belle detector at the KEKB $e^+e^-$ collider. The Michel parameters are measured in an unbinned maximum likelihood fit to the kinematic distribution of $e^+e^-\rightarrow\tau^+\tau^-\rightarrow (\pi^+\pi^0 \bar{\nu}_\tau)(\ell^-\nu_{\tau}\bar{\nu}_{\ell}\gamma)$ $(\ell=e$ or $\mu)$. The measured values of the Michel parameters are $\bar{\eta} = -1.3 \pm 1.5 \pm 0.8$ and $\xi\kappa = 0.5 \pm 0.4 \pm 0.2$, where the first error is statistical and the second is systematic. This is the first measurement of these parameters. These results are consistent with the Standard Model predictions within their uncertainties and constrain the coupling constants of the generalized weak interaction.
Published: 2017
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44. Search for $\Lambda_c^+\to\phi p \pi^0$ and branching fraction measurement of $\Lambda_c^+\to K^-\pi^+ p \pi^0$

Author: Belle Collaboration, Pal, B., Schwartz, A. J., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Berger, M., Bhardwaj, V., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Cinabro, D., Dash, N., Di Carlo, S., Doležal, Z., Drásal, Z., Eidelman, S., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Goldenzweig, P., Guido, E., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Inami, K., Ishikawa, A., Itoh, R., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Karyan, G., Kato, Y., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kim, Y. J., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Krokovny, P., Kuhr, T., Kulasiri, R., Kwon, Y. -J., Li, C. H., Li, L., Li, Y., Gioi, L. Li, Libby, J., Liventsev, D., Lubej, M., Luo, T., MacNaughton, J., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Nayak, M., Niiyama, M., Nishida, S., Ogawa, S., Ono, H., Pakhlov, P., Pakhlova, G., Pardi, S., Park, C. -S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Ritter, M., Rostomyan, A., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shibata, T. -A., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Van Hulse, C., Varner, G., Varvell, K. E., Vinokurova, A., Vorobyev, V., Wang, C. H., Wang, M. -Z., Wang, X. L., Watanabe, M., Watanabe, Y., Watanuki, S., Widmann, E., Won, E., Yamashita, Y., Ye, H., Yelton, J., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Subjects: High Energy Physics - Experiment
Abstract: We have searched for the Cabibbo-suppressed decay $\Lambda_c^+\to\phi p\pi^0$ in $e^+e^-$ collisions using a data sample corresponding to an integrated luminosity of 915 $\rm fb^{-1}$. The data were collected by the Belle experiment at the KEKB $e^+e^-$ asymmetric-energy collider running at or near the $\Upsilon(4S)$ and $\Upsilon(5S)$ resonances. No significant signal is observed, and we set an upper limit on the branching fraction of $\mathcal{B}(\Lambda_c^+\to \phi p\pi^0) <15.3\times10^{-5}$ at 90% confidence level. The contribution for nonresonant $\Lambda_c^+\to K^+K^- p\pi^0$ decays is found to be consistent with zero and the corresponding upper limit on its branching fraction is set to be $\mathcal{B}(\Lambda_c^+\to K^+K^-p\pi^0)_{\rm NR} <6.3\times10^{-5} $ at 90% confidence level. We also measure the branching fraction for the Cabibbo-favored decay $\Lambda_c^+\to K^-\pi^+p\pi^0$; the result is $\mathcal{B}(\Lambda_c^+\to K^-\pi^+p\pi^0)= (4.42\pm0.05\, (\rm stat.) \pm 0.12\, (\rm syst.) \pm 0.16\, (\mathcal{B}_{\rm Norm}))\%$, which is the most precise measurement to date. Finally, we have searched for an intermediate hidden-strangeness pentaquark decay $P^+_s\to\phi p$. We see no evidence for this intermediate decay and set an upper limit on the product branching fraction of ${\cal B}(\Lambda_c^+\to P^+_s \pi^0)\times {\cal B}(P^+_s\to\phi p) <8.3\times 10^{-5}$ at 90% confidence level., Comment: 8 pages, 5 figures, 1 table, minor text change in version 2
Published: 2017
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45. Measurement of the branching fraction and $CP$ asymmetry in $B^{0} \to \pi^{0}\pi^{0}$ decays, and an improved constraint on $\phi_{2}$

Author: The Belle Collaboration, Julius, T., Sevior, M. E., Mohanty, G. B., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Barberio, E., Barrett, M., Berger, M., Bhardwaj, V., Bhuyan, B., Biswal, J., Bloomfield, T., Bobrov, A., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chang, M. -C., Chao, Y., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, Y., Cinabro, D., Dash, N., Di Carlo, S., Doležal, Z., Dossett, D., Drásal, Z., Dutta, D., Eidelman, S., Farhat, H., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Gillard, R., Goldenzweig, P., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jin, Y., Joffe, D., Joo, K. K., Kahn, J., Karyan, G., Katrenko, P., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, K. T., Kim, M. J., Kim, S. H., Kim, Y. J., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Krokovny, P., Kuhr, T., Kulasiri, R., Kuzmin, A., Kwon, Y. -J., Lange, J. S., Lee, I. S., Li, C. H., Li, L., Li, Y., Gioi, L. Li, Libby, J., Liventsev, D., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Moon, H. K., Mori, T., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, C. -S., Park, H., Pesántez, L., Pestotnik, R., Piilonen, L. E., Pulvermacher, C., Ritter, M., Sahoo, H., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Shebalin, V., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Starič, M., Sumiyoshi, T., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Hulse, C., Varner, G., Varvell, K. E., Vossen, A., Waheed, E., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Watanabe, Y., Widmann, E., Williams, K. M., Won, E., Yamashita, Y., Ye, H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A.
Subjects: High Energy Physics - Experiment
Abstract: We measure the branching fraction and $CP$ violation asymmetry in the decay $B^{0}\to \pi^{0}\pi^{0}$, using a data sample of $752\times 10^{6}$ $B\bar{B}$ pairs collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^{+}e^{-}$ collider. The obtained branching fraction and direct $CP$ asymmetry are $ \mathcal{B}(B\to \pi^{0}\pi^{0}) = [1.31 \pm 0.19~ \text{(stat.)} \pm 0.19~ \text{(syst.)}] \times 10^{-6}$ and $ A_{CP} = +0.14 \pm 0.36~ \text{(stat.)} \pm 0.10~ \text{(syst.)}, $ respectively. The signal significance, including the systematic uncertainty, is 6.4 standard deviations. We combine these results with Belle's earlier measurements of $B^{0}\to \pi^{+} \pi^{-}$ and $B^{\pm} \to \pi^{\pm} \pi^{0}$ to exclude the $CP$-violating parameter $\phi_{2}$ from the range $15.5^{\circ} < \phi_{2} < 75.0^{\circ}$ at 95\% confidence level., Comment: 8 pages, 2 figures
Published: 2017
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46. Precise determination of the CKM matrix element $\left| V_{cb}\right|$ with $\bar B^0 \to D^{*\,+} \, \ell^- \, \bar \nu_\ell$ decays with hadronic tagging at Belle

Author: The Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Aso, T., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bala, A., Ban, Y., Bansal, V., Barberio, E., Barrett, M., Bartel, W., Bay, A., Behera, P., Belhorn, M., Belous, K., Berger, M., Bernlochner, F. U., Besson, D., Bhardwaj, V., Bhuyan, B., Biswal, J., Bloomfield, T., Blyth, S., Bobrov, A., Bondar, A., Bonvicini, G., Bookwalter, C., Boulahouache, C., Bozek, A., Bračko, M., Braun, N., Breibeck, F., Brodzicka, J., Browder, T. E., Waheed, E., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, P., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Crnkovic, J., Dalseno, J., Danilov, M., Dash, N., Di Carlo, S., Dingfelder, J., Doležal, Z., Dossett, D., Drásal, Z., Drutskoy, A., Dubey, S., Dutta, D., Dutta, K., Eidelman, S., Epifanov, D., Falke, S., Farhat, H., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Gillard, R., Giordano, F., Glattauer, R., Goh, Y. M., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hamer, P., Han, Y. L., Hara, K., Hara, T., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Higuchi, T., Himori, S., Hirose, S., Horiguchi, T., Hoshi, Y., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huschle, M., Hyun, H. J., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itagaki, K., Itoh, R., Iwabuchi, M., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, K. K., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, E., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, S. H., Kim, S. K., Kim, Y. J., Kinoshita, K., Kleinwort, C., Klucar, J., Ko, B. R., Kobayashi, N., Koblitz, S., Kodyš, P., Koga, Y., Korpar, S., Kotchetkov, D., Kouzes, R. T., Križan, P., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lange, J. S., Lee, D. H., Lee, I. S., Lee, S. -H., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L., Li, X., Li, Y., Gioi, L. Li, Libby, J., Limosani, A., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Lukin, P., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Matyja, A., Metzner, F., McOnie, S., Mikami, Y., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Mohapatra, D., Moll, A., Moon, H. K., Mori, T., Morii, T., Moser, H. -G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagamine, T., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, H., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Nedelkovska, E., Negishi, K., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Nozaki, T., Ogawa, A., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Ono, Y., Onuki, Y., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Palka, H., Panzenböck, E., Park, C. -S., Park, C. W., Park, H., Park, K. S., Paul, S., Peak, L. S., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Petrič, M., Piilonen, L. E., Poluektov, A., Prasanth, K., Prim, M., Prothmann, K., Pulvermacher, C., Purohit, M. V., Rauch, J., Reisert, B., Ribežl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Rummel, S., Ryu, S., Sahoo, H., Salehi, M., Saito, T., Sakai, K., Sakai, Y., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schönmeier, P., Schram, M., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shimizu, N., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smerkol, P., Sohn, Y. -S., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Suzuki, K., Suzuki, S., Suzuki, S. Y., Suzuki, Z., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Taylor, G. N., Tenchini, F., Teramoto, Y., Tikhomirov, I., Trabelsi, K., Trusov, V., Tsuboyama, T., Uchida, M., Uchida, T., Uehara, S., Ueno, K., Uglov, T., Unno, Y., Uno, S., Uozumi, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Wang, B., Wang, C. H., Wang, J., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Wedd, R., Wehle, S., White, E., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamaoka, J., Yamashita, Y., Yamauchi, M., Yashchenko, S., Ye, H., Yelton, J., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Ziegler, M., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: The precise determination of the CKM matrix element $\left| V_{cb}\right|$ is important for carrying out tests of the flavour sector of the Standard Model. In this article we present a preliminary analysis of the $\bar B^0 \to D^{*\,+} \, \ell^- \, \bar \nu_\ell$ decay mode and its charge conjugate, selected in events that contain a fully reconstructed $B$-meson, using 772 million $e^+ \, e^- \to \Upsilon(4S) \to B \bar B$ events recorded by the Belle detector at KEKB. Unfolded differential decay rates of four kinematic variables fully describing the $\bar B^0 \to D^{*\,+} \, \ell^- \, \bar \nu_\ell$ decay in the $B$-meson rest frame are presented. We measure the total branching fraction $\mathcal{B}( \bar B^0 \to D^{*\,+} \, \ell^- \, \bar \nu_\ell ) = \left(4.95 \pm 0.11 \pm 0.22 \right) \times 10^{-2}$, where the errors are statistical and systematic respectively. The value of $\left|V_{cb} \right|$ is determined to be $\left( 37.4 \pm 1.3 \right) \times 10^{-3}$. Both results are in good agreement with current world averages.
Published: 2017

47. Measurement of the $\tau$ lepton polarization and $R(D^)$ in the decay $\bar{B} \to D^ \tau^- \bar{\nu}_\tau$

Author: Hirose, S., Iijima, T., Adachi, I., Adamczyk, K., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Barberio, E., Behera, P., Berger, M., Bhuyan, B., Biswal, J., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chang, P., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Choi, Y., Cinabro, D., Danilov, M., Dash, N., Di Carlo, S., Dingfelder, J., Doležal, Z., Drásal, Z., Dutta, D., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Ferber, T., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Goldenzweig, P., Golob, B., Greenwald, D., Grygier, J., Haba, J., Hara, K., Hasenbusch, J., Hayasaka, K., Hayashii, H., Higuchi, T., Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Kato, Y., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, K. T., Kim, M. J., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kwon, Y. -J., Lange, J. S., Li, C. H., Li, L., Li, Y., Gioi, L. Li, Libby, J., Liventsev, D., Lubej, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Miyabayashi, K., Miyake, H., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mussa, R., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Ono, H., Onuki, Y., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, B., Park, C. W., Park, H., Paul, S., Pesántez, L., Pestotnik, R., Piilonen, L. E., Prasanth, K., Ritter, M., Rostomyan, A., Rozanska, M., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumisawa, K., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Van Hulse, C., Varner, G., Varvell, K. E., Vossen, A., Wang, C. H., Wang, M. -Z., Wang, P., Watanabe, M., Watanabe, Y., Widmann, E., Won, E., Yamashita, Y., Ye, H., Yelton, J., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A.
Subjects: High Energy Physics - Experiment
Abstract: We report the first measurement of the $\tau$ lepton polarization $P_\tau(D^*)$ in the decay $\bar{B} \rightarrow D^* \tau^- \bar{\nu}_\tau$ as well as a new measurement of the ratio of the branching fractions $R(D^{*}) = \mathcal{B}(\bar {B} \rightarrow D^* \tau^- \bar{\nu}_\tau) / \mathcal{B}(\bar{B} \rightarrow D^* \ell^- \bar{\nu}_\ell)$, where $\ell^-$ denotes an electron or a muon, and the $\tau$ is reconstructed in the modes $\tau^- \rightarrow \pi^- \nu_\tau$ and $\tau^- \rightarrow \rho^- \nu_\tau$. We use the full data sample of $772 \times 10^6$ $B{\bar B}$ pairs recorded with the Belle detector at the KEKB electron-positron collider. Our results, $P_\tau(D^*) = -0.38 \pm 0.51 {\rm (stat.)} ^{+0.21}_{-0.16} {\rm (syst.)}$ and $R(D^*) = 0.270 \pm 0.035{\rm (stat.)} ^{+0.028}_{-0.025}{\rm (syst.)}$, are consistent with the theoretical predictions of the Standard Model., Comment: 7 pages, 2 figures, submitted to Physical Review Letters; one figure was removed from the first version
Published: 2016
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48. Measurement of time-dependent CP asymmetries in B0→KS0ηγ decays

Author: Nakano, H, Ishikawa, A, Sumisawa, K, Yamamoto, H, Adachi, I, Aihara, H, Said, S Al, Asner, DM, Aulchenko, V, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bansal, V, Behera, P, Beleño, C, Bhuyan, B, Bilka, T, Biswal, J, Bozek, A, Bračko, M, Červenkov, D, Chekelian, V, Cheon, BG, Chilikin, K, Cho, K, Choi, S-K, Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Dash, N, Di Carlo, S, Doležal, Z, Eidelman, S, Fast, JE, Ferber, T, Fulsom, BG, Garg, R, Gaur, V, Gabyshev, N, Garmash, A, Gelb, M, Giri, A, Goldenzweig, P, Guan, Y, Guido, E, Haba, J, Hara, T, Hayasaka, K, Hayashii, H, Hedges, MT, Hirose, S, Hou, W-S, Iijima, T, Inami, K, Inguglia, G, Itoh, R, Iwasaki, M, Iwasaki, Y, Jacobs, WW, Jaegle, I, Jeon, HB, Jia, S, Jin, Y, Julius, T, Kaliyar, AB, Karyan, G, Kawasaki, T, Kiesling, C, Kim, DY, Kim, HJ, Kim, JB, Kim, KT, Kim, SH, Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, Križan, P, Kroeger, R, Krokovny, P, Kuhr, T, Kulasiri, R, Kumita, T, Kwon, Y-J, Lange, JS, Lee, IS, Lee, SC, Li, LK, Li, Y, Li, YB, Gioi, L Li, Libby, J, Liventsev, D, Lubej, M, Luo, T, MacNaughton, J, Masuda, M, and Matsuda, T
Subjects: hep-ex, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Quantum Physics, Nuclear & Particles Physics
Abstract: We present a measurement of the time-dependent CP asymmetry for the neutral B-meson decay B0-->phiK0. We use a sample of approximately 114 x 10(6) B-meson pairs taken at the Upsilon(4S) resonance with the BABAR detector at the PEP-II B-meson factory at SLAC. We reconstruct the CP eigenstates phiK0S and phiK0L, where phi-->K+K-, K0S-->pi+pi-, and K0L is observed via its hadronic interactions. The other B meson in the event is tagged as either a B0 or Bbar0 from its decay products. The values of the CP-violation parameters are SphiK=0.47+/-0.34(stat)+0.08-0.06(syst) and CphiK=0.01+/-0.33(stat)+/-0.10(syst).
Published: 2018

49. Observation of Transverse $\Lambda/\bar{\Lambda}$ Hyperon Polarization in $e^+e^-$ Annihilation at Belle

Author: The Belle Collaboration, Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Aso, T., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bala, A., Ban, Y., Bansal, V., Barberio, E., Barrett, M., Bartel, W., Bay, A., Behera, P., Belhorn, M., Belous, K., Berger, M., Besson, D., Bhardwaj, V., Bhuyan, B., Biswal, J., Bloomfield, T., Blyth, S., Bobrov, A., Bondar, A., Bonvicini, G., Bookwalter, C., Boulahouache, C., Bozek, A., Bračko, M., Breibeck, F., Brodzicka, J., Browder, T. E., Waheed, E., Červenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, P., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Crnkovic, J., Dalseno, J., Danilov, M., Dash, N., Di Carlo, S., Dingfelder, J., Doležal, Z., Dossett, D., Drásal, Z., Drutskoy, A., Dubey, S., Dutta, D., Dutta, K., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Getzkow, D., Gillard, R., Giordano, F., Glattauer, R., Goh, Y. M., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guan, Y., Guo, H., Haba, J., Hamer, P., Han, Y. L., Hara, K., Hara, T., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Higuchi, T., Himori, S., Hirose, S., Horiguchi, T., Hoshi, Y., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huschle, M., Hyun, H. J., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itagaki, K., Itoh, R., Iwabuchi, M., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jin, Y., Joffe, D., Jones, M., Joo, K. K., Julius, T., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Kataoka, S. U., Kato, E., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, S. H., Kim, S. K., Kim, Y. J., Kinoshita, K., Kleinwort, C., Klucar, J., Ko, B. R., Kobayashi, N., Koblitz, S., Kodyš, P., Koga, Y., Korpar, S., Kotchetkov, D., Kouzes, R. T., Križan, P., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnička, P., Kwon, Y. -J., Lai, Y. -T., Lange, J. S., Lee, D. H., Lee, I. S., Lee, S. -H., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L., Li, X., Li, Y., Gioi, L. Li, Libby, J., Limosani, A., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Lukin, P., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Matyja, A., McOnie, S., Mikami, Y., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Mohapatra, D., Moll, A., Moon, H. K., Mori, T., Morii, T., Moser, H. -G., Müller, T., Muramatsu, N., Mussa, R., Nagamine, T., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, H., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Nedelkovska, E., Negishi, K., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Nozaki, T., Ogawa, A., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, Y., Onuki, Y., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Palka, H., Panzenböck, E., Park, C. -S., Park, C. W., Park, H., Park, K. S., Paul, S., Peak, L. S., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Petrič, M., Piilonen, L. E., Poluektov, A., Prasanth, K., Prim, M., Prothmann, K., Pulvermacher, C., Purohit, M. V., Rauch, J., Reisert, B., Ribežl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Rummel, S., Ryu, S., Sahoo, H., Saito, T., Sakai, K., Sakai, Y., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schlüter, T., Schneider, O., Schnell, G., Schönmeier, P., Schram, M., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shimizu, N., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smerkol, P., Sohn, Y. -S., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Suzuki, K., Suzuki, S., Suzuki, S. Y., Suzuki, Z., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Taylor, G. N., Tenchini, F., Teramoto, Y., Tikhomirov, I., Trabelsi, K., Trusov, V., Tsuboyama, T., Uchida, M., Uchida, T., Uehara, S., Ueno, K., Uglov, T., Unno, Y., Uno, S., Uozumi, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Wang, C. H., Wang, J., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Wedd, R., Wehle, S., White, E., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamaoka, J., Yamashita, Y., Yamauchi, M., Yashchenko, S., Ye, H., Yelton, J., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Ziegler, M., Zivko, T., Zupanc, A., and Zwahlen, N.
Subjects: High Energy Physics - Experiment
Abstract: We report the first observation of the polarization of $\Lambda/\bar{\Lambda}$ hyperons transverse to its production plane in $e^+e^-$ annihilation. We observe a significant polarization that rises with the fractional energy carried by the hyperon as well as its transverse momentum. To define the production plane, we use the direction of the hyperon momentum together with either the thrust axis in the event or the momentum vector of a hadron in the opposite hemisphere. Furthermore, we investigate the contributions to the hyperon polarization from the feed-down from $\Sigma^0/\bar{\Sigma}^0$ and $\Lambda_c^{\pm}$ decays. This measurement uses a dataset of 800.4\~fb$^{-1}$ collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV., Comment: 14 pages, 7 figures
Published: 2016

50. Study of Two-Body $e^+e^- \to B_s^{()}\bar{B}_s^{()}$ Production in the Energy Range from 10.77 to 11.02 GeV

Author: Abdesselam, A., Adachi, I., Adamczyk, K., Aihara, H., Said, S. Al, Arinstein, K., Arita, Y., Asner, D. M., Aso, T., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Aziz, T., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bala, A., Ban, Y., Bansal, V., Barberio, E., Barrett, M., Bartel, W., Bay, A., Bedny, I., Behera, P., Belhorn, M., Belous, K., Berger, M., Besson, D., Bhardwaj, V., Bhuyan, B., Biswal, J., Bloomfield, T., Blyth, S., Bobrov, A., Bondar, A., Bonvicini, G., Bookwalter, C., Boulahouache, C., Bozek, A., Bracko, M., Breibeck, F., Brodzicka, J., Browder, T. E., Waheed, E., Cervenkov, D., Chang, M. -C., Chang, P., Chao, Y., Chekelian, V., Chen, A., Chen, K. -F., Chen, P., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Crnkovic, J., Dalseno, J., Danilov, M., Dash, N., DiCarlo, S., Dingfelder, J., Dolezal, Z., Dossett, D., Drasal, Z., Drutskoy, A., Dubey, S., Dutta, D., Dutta, K., Eidelman, S., Epifanov, D., Esen, S., Farhat, H., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Gaur, V., Gabyshev, N., Ganguly, S., Garmash, A., Getzkow, D., Gillard, R., Giordano, F., Glattauer, R., Goh, Y. M., Goldenzweig, P., Golob, B., Greenwald, D., Perdekamp, M. Grosse, Grygier, J., Grzymkowska, O., Guo, H., Haba, J., Hamer, P., Han, Y. L., Hara, K., Hara, T., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Heller, A., Higuchi, T., Himori, S., Hirose, S., Horiguchi, T., Hoshi, Y., Hoshina, K., Hou, W. -S., Hsiung, Y. B., Hsu, C. -L., Huschle, M., Hyun, H. J., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itagaki, K., Itoh, R., Iwabuchi, M., Iwasaki, M., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jin, Y., Joffe, D., Jones, M., Joo, K. K., Julius, T., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Kataoka, S. U., Kato, E., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, H. J., Kim, H. -J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, S. H., Kim, S. K., Kim, Y. J., Kinoshita, K., Kleinwort, C., Klucar, J., Ko, B. R., Kobayashi, N., Koblitz, S., Kodys, P., Koga, Y., Korpar, S., Kotchetkov, D., Kouzes, R. T., Krizan, P., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, L., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Kuzmin, A., Kvasnicka, P., Kwon, Y. -J., Lai, Y. -T., Lange, J. S., Lee, D. H., Lee, I. S., Lee, S. -H., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, J., Li, L., Li, X., Li, Y., Gioi, L. Li, Libby, J., Limosani, A., Liu, C., Liu, Y., Liu, Z. Q., Liventsev, D., Loos, A., Louvot, R., Lubej, M., Lukin, P., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Matyja, A., McOnie, S., Mikami, Y., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Mohapatra, D., Moll, A., Moon, H. K., Mori, T., Morii, T., Moser, H. -G., Muller, T., Muramatsu, N., Mussa, R., Nagamine, T., Nagasaka, Y., Nakahama, Y., Nakamura, I., Nakamura, K. R., Nakano, E., Nakano, H., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Nedelkovska, E., Negishi, K., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Nozaki, T., Ogawa, A., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, Y., Onuki, Y., Ostrowicz, W., Oswald, C., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Palka, H., Panzenbock, E., Park, C. -S., Park, C. W., Park, H., Park, K. S., Paul, S., Peak, L. S., Pedlar, T. K., Peng, T., Pesantez, L., Pestotnik, R., Peters, M., Petric, M., Piilonen, L. E., Poluektov, A., Prasanth, K., Prim, M., Prothmann, K., Pulvermacher, C., Purohit, M. V., Rauch, J., Reisert, B., Ribezl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Rummel, S., Ryu, S., Sahoo, H., Saito, T., Sakai, K., Sakai, Y., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Schluter, T., Schneider, O., Schnell, G., Schonmeier, P., Schram, M., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Shibata, T. -A., Shibuya, H., Shimizu, N., Shinomiya, S., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smerkol, P., Sohn, Y. -S., Sokolov, A., Soloviev, Y., Solovieva, E., Stanic, S., Staric, M., Steder, M., Strube, J. F., Stypula, J., Sugihara, S., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Suzuki, K., Suzuki, S., Suzuki, S. Y., Suzuki, Z., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Taylor, G. N., Tenchini, F., Teramoto, Y., Tikhomirov, I., Trabelsi, K., Trusov, V., Tse, Y. F., Tsuboyama, T., Uchida, M., Uchida, T., Uehara, S., Ueno, K., Uglov, T., Unno, Y., Uno, S., Uozumi, S., Urquijo, P., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Wang, C. H., Wang, J., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Wedd, R., Wehle, S., White, E., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Yamamoto, H., Yamaoka, J., Yamashita, Y., Yamauchi, M., Yashchenko, S., Ye, H., Yelton, J., Yook, Y., Yuan, C. Z., Yusa, Y., Zhang, C. C., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Ziegler, M., Zivko, T., Zupanc, A., Zwahlen, N., and Zyukova, O.
Subjects: High Energy Physics - Experiment
Abstract: We report results on the studies of the $e^+e^-\to B_s^{(*)}\bar{B}_s^{(*)}$ processes. The results are based on a $121.4$ fb$^{-1}$ data sample collected with the Belle detector at the center-of-mass energy near the $\Upsilon(10860)$ peak and $16.4$ fb$^{-1}$ of data collected at 19 energy points in the range from 10.77 to 11.02 GeV. We observe a clear $e^+e^-\to\Upsilon(10860)\to B_s^{(*)}\bar{B}_s^{(*)}$ signal, with no statistically significant signal of $e^+e^-\to \Upsilon(11020)\to B_s^{(*)}\bar{B}_s^{(*)}$. The relative production ratio of $B_s^*\bar{B}_s^*$, $B_s\bar{B}_s^{*}$, and $B_s\bar{B}_s$ final states at $\sqrt{s}=10.866$ GeV is measured to be $7:$ $0.856\pm0.106(stat.)\pm0.053(syst.):$ $0.645\pm0.094(stat.)^{+0.030}_{-0.033}(syst.)$. An angular analysis of the $B_s^*\bar{B}_s^*$ final state produced at the $\Upsilon(10860)$ peak is also performed., Comment: 22 page, 6 figures
Published: 2016

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