Author: "Pal, B." / Publisher: deutsches elektronen-synchrotron, desy, hamburg - Searchworks@Jio Institute Digital Library Search Results

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139 results on '"Pal, B."'

1. Measurement of $\mathcal B (B_s \to D_sX)$ with $B_s$ semileptonic tagging

Author: Wang, B., Kinoshita, K., Beleño, C., Nishimura, K., Ogawa, S., Ono, H., Onuki, Y., Pakhlova, G., Pal, B., Pang, T., Pardi, S., Park, H., Park, S.-H., Bennett, J., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Prim, M., Ritter, M., Rostomyan, A., Russo, G., Sandilya, S., Bessner, M., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Bhardwaj, V., Shebalin, V., Shiu, J.-G., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tanida, K., Tenchini, F., Bilka, T., Uglov, T., Uno, S., Usov, Y., Van Tonder, R., Varner, G., Vinokurova, A., Waheed, E., Wang, C. H., Wang, M.-Z., Wang, P., Biswal, J., Werbycka, O., Won, E., Yang, S. B., Ye, H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., Belle Collaboration, Bobrov, A., Bonvicini, G., Bozek, A., Bračko, M., Aihara, H., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chen, A., Chilikin, K., Cho, H. E., Cho, K., Choi, S.-K., Choi, Y., Asner, D. M., Cinabro, D., Cunliffe, S., Dash, N., Di Capua, F., Di Carlo, S., Doležal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Aushev, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Guan, Y., Hayasaka, K., Hayashii, H., Hou, W.-S., Ayad, R., Inami, K., Ishikawa, A., Iwasaki, M., Iwasaki, Y., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Kang, K. H., Babu, V., Karyan, G., Kiesling, C., Kim, D. Y., Kim, K. T., Kim, S. H., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Badhrees, I., 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., Bakich, A. M., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., Luo, T., MacNaughton, J., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Behera, P., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mussa, R., Nakao, M., Nath, K. J., Nayak, M., Nisar, N. K., and Nishida, S.
Subjects: electron, data analysis method, B/s0: branching ratio: measured, semileptonic decay [B/s0], photon, B/s0: semileptonic decay, statistical [error], BELLE, annihilation [electron positron], electron positron: colliding beams, electron positron: annihilation, branching ratio: measured [B/s0], Upsilon(10870): electroproduction, error: statistical, electroproduction [Upsilon(10870)], KEK-B, muon, colliding beams [electron positron], ddc:530, hadron, experimental results
Abstract: doi:10.1103/PhysRevD.105.012004, We report the first direct measurement of the inclusive branching fraction $\mathcal B (B_s \to D_sX)$ via $B_s$ tagging in $e^+e^�� (5S)$ events. Tagging is accomplished through a partial reconstruction of semileptonic decays $B_s �� D_sX��$, where X denotes unreconstructed additional hadrons or photons and $��$ is an electron or muon. With 121.4 fb$^{��1}$ of data collected at the $��(5S)$ resonance by the Belle detector at the KEKB asymmetric-energy $e^+e^��$ collider, we obtain $\mathcal B (B_s \to D_sX)=(60.2��5.8��2.3)%$, where the first uncertainty is statistical and the second is systematic.
Published: 2022
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2. Search for the decay $B_s^0\rightarrow\eta\eta$

Author: 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., Bra��ko, M., Browder, T. E., Campajola, M., ��ervenkov, 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., Dole��al, 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., Kody��, P., Korpar, S., Kotchetkov, D., Kri��an, 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., Stari��, 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., Zhukova, V., and Belle Collaboration
Subjects: KEK-B, High Energy Physics::Experiment, BELLE, branching ratio, Upsilon(10870)
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.
Published: 2021
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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., Bele��o, C., Bennett, J., Bessner, M., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bra��ko, M., Browder, T. E., Campajola, M., Cao, L., ��ervenkov, 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., Dole��al, 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., Hayasaka, K., 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., Kody��, P., Korpar, S., Kotchetkov, D., Kri��an, 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., Miyabayashi, K., 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., Prim, M., 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., Stari��, 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: electron, B/s0: branching ratio: measured, High Energy Physics::Lattice, High Energy Physics::Phenomenology, photon, B/s0: semileptonic decay, +D%2Fs+electron+neutrino%2Fe+anything%22">B/s0 --> D/s electron neutrino/e anything, BELLE, electron positron: colliding beams, electron positron: annihilation, Upsilon(10870): electroproduction, 10.87 GeV-cms, error: statistical, KEK-B, +D%2Fs+muon+neutrino%2Fmu+anything%22">B/s0 --> D/s muon neutrino/mu anything, muon, B/s0: decay modes, High Energy Physics::Experiment, D/s, experimental results
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 ${\mathcal B}(B_s \rightarrow D_s X)$ = $(61.6 \pm 5.3 \pm 2.1)$\%, where the first uncertainty is statistical and the second is systematic.
Published: 2021
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4. Erratum: Measurement of the CKM matrix element $|V_{cb}|$ from $B^0 �� D ^{*�� }��^+ ��_��$ at Belle [Phys. Rev. D 100 , 052007 (2019)]

Author: Waheed, E., Urquijo, P., Asner, D. M., Greenwald, D., Grosse Perdekamp, M., Grygier, J., Grzymkowska, O., Guan, Y., Guido, E., Guo, H., Haba, J., Hamer, P., Hara, K., Atmacan, H., Hara, T., Hasegawa, Y., Hasenbusch, J., Hayasaka, K., Hayashii, H., He, X. H., Heck, M., Hedges, M. T., Heffernan, D., Heider, M., Aulchenko, V., Heller, A., Higuchi, T., Hirose, S., Horiguchi, T., Hoshi, Y., Hoshina, K., Hou, W.-S., Hsiung, Y. B., Hsu, C.-L., Huang, K., Aushev, T., Huschle, M., Igarashi, Y., Iijima, T., Imamura, M., Inami, K., Inguglia, G., Ishikawa, A., Itagaki, K., Itoh, R., Iwasaki, M., Ayad, R., Iwasaki, Y., Iwata, S., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Jones, M., Joo, K. K., Aziz, T., Julius, T., Kahn, J., Kakuno, H., Kaliyar, A. B., Kang, J. H., Kang, K. H., Kapusta, P., Karyan, G., Kataoka, S. U., Kato, E., Babu, V., Kato, Y., Katrenko, P., Kawai, H., Kawasaki, T., Keck, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, C. H., Kim, D. Y., Badhrees, I., 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., Bahinipati, S., Kleinwort, C., Klucar, J., Kobayashi, N., Kodyš, P., Koga, Y., Konno, T., Korpar, S., Kotchetkov, D., Kouzes, R. T., Križan, P., Bakich, A. M., Kroeger, R., Krohn, J.-F., Krokovny, P., Kronenbitter, B., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kurihara, E., Kuroki, Y., Ferlewicz, D., Ban, 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., Bansal, V., Leitgab, M., Leitner, R., Levit, D., Lewis, P., Li, C. H., Li, H., Li, L. K., Li, Y., Li, Y. B., Li Gioi, L., Barberio, E., Libby, J., Limosani, A., Liptak, Z., Liu, C., Liu, Y., Liventsev, D., Loos, A., Louvot, R., Lu, P.-C., Lubej, M., Barrett, M., Luo, T., MacNaughton, J., Masuda, M., Matsuda, T., Matvienko, D., Matyja, A., McNeil, J. T., Merola, M., Metzner, F., Mikami, Y., Bartel, W., Miyabayashi, K., Miyachi, Y., Miyake, H., Miyata, H., Miyazaki, Y., Mizuk, R., Mohanty, G. B., Mohanty, S., Moon, H. K., Moon, T. J., Behera, P., Mori, T., Morii, T., Moser, H.-G., Mrvar, M., Müller, T., Muramatsu, N., Mussa, R., Nagasaka, Y., Nakahama, Y., Nakamura, I., Beleño, C., Nakamura, K. R., Nakano, E., Nakano, H., Nakano, T., Nakao, M., Nakayama, H., Nakazawa, H., Nanut, T., Nath, K. J., Natkaniec, Z., Belous, K., Nayak, M., Neichi, K., Ng, C., Niebuhr, C., Niiyama, M., Nisar, N. K., Nishida, S., Nishimura, K., Nitoh, O., Ogawa, A., Berger, M., Ogawa, K., Ogawa, S., Ohshima, T., Okuno, S., Olsen, S. L., Ono, H., Ono, Y., Onuki, Y., Ostrowicz, W., Oswald, C., Bernlochner, F., Ozaki, H., Pakhlov, P., Pakhlova, G., Pal, B., Palka, H., Panzenböck, E., Pardi, S., Park, C.-S., Park, C. W., Park, H., Adachi, I., Besson, D., Park, K. S., Park, S.-H., Paul, S., Pavelkin, I., Pedlar, T. K., Peng, T., Pesántez, L., Pestotnik, R., Peters, M., Piilonen, L. E., Bhardwaj, V., Popov, V., Prasanth, K., Prencipe, E., Prim, M., Prothmann, K., Purohit, M. V., Rabusov, A., Rauch, J., Reisert, B., Resmi, P. K., Bhuyan, B., Ribežl, E., Ritter, M., Rorie, J., Rostomyan, A., Rozanska, M., Rummel, S., Russo, G., Sahoo, D., Sahoo, H., Saito, T., Bilka, T., Sakai, Y., Salehi, M., Sandilya, S., Santel, D., Santelj, L., Sanuki, T., Sasaki, J., Sasao, N., Sato, Y., Savinov, V., Biswal, J., Schlüter, T., Schneider, O., Schnell, G., Schönmeier, P., Schram, M., Schueler, J., Schwanda, C., Schwartz, A. J., Schwenker, B., Seidl, R., Bloomfield, T., Seino, Y., Semmler, D., Senyo, K., Seon, O., Seong, I. S., Sevior, M. E., Shang, L., Shapkin, M., Shebalin, V., Shen, C. P., Bobrov, A., Shibata, T.-A., Shibuya, H., Shinomiya, S., Shiu, J.-G., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Sinha, R., Smith, K., Bondar, A., Sokolov, A., Soloviev, Y., Solovieva, E., Stanič, S., Starič, M., Steder, M., Stottler, Z., Strube, J. F., Stypula, J., Sugihara, S., Bonvicini, G., Sugiyama, A., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Suzuki, K., Suzuki, S., Suzuki, S. Y., Suzuki, Z., Bozek, A., Takeichi, H., Takizawa, M., Tamponi, U., Tanaka, M., Tanaka, S., Tanida, K., Taniguchi, N., Tao, Y., Taylor, G. N., Tenchini, F., Adamczyk, K., Bračko, M., Teramoto, Y., Tikhomirov, I., Trabelsi, K., Tsuboyama, T., Uchida, M., Uchida, T., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Braun, N., Uno, S., Ushiroda, Y., Usov, Y., Vahsen, S. E., Van Tonder, R., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vervink, K., Breibeck, F., Vinokurova, A., Vorobyev, V., Vossen, A., Wagner, M. N., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Wang, X. L., Watanabe, M., Brodzicka, J., Watanabe, Y., Watanuki, S., Wedd, R., Wehle, S., Widmann, E., Wiechczynski, J., Williams, K. M., Won, E., Yabsley, B. D., Yamada, S., Browder, T. E., Yamamoto, H., Yamashita, Y., Yang, S. B., Yashchenko, S., Ye, H., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yusa, Y., Cao, L., Zakharov, S., Zhang, C. C., Zhang, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., Caria, G., Zwahlen, N., Belle Collaboration, Červenkov, D., Chang, M.-C., Chang, P., Ahn, J. K., Chao, Y., Cheaib, R., Chekelian, V., Chen, A., Chen, K.-F., Cheon, B. G., Chilikin, K., Chistov, R., Cho, H. E., Cho, K., Aihara, H., Chobanova, V., Choi, S.-K., Choi, Y., Choudhury, S., Cinabro, D., Crnkovic, J., Cunliffe, S., Czank, T., Danilov, M., Dash, N., Al Said, S., Di Carlo, S., Dingfelder, J., Doležal, Z., Dong, T. V., Dossett, D., Drásal, Z., Drutskoy, A., Dubey, S., Dutta, D., Eidelman, S., Arinstein, K., Epifanov, D., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Frost, O., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Arita, Y., Garmash, A., Gelb, M., Gemmler, J., Getzkow, D., Giordano, F., Giri, A., Glattauer, R., Goh, Y. M., Goldenzweig, P., and Golob, B.
Subjects: parametrization [form factor], data analysis method, Upsilon(10570): electroproduction, S042RA, BELLE, annihilation [electron positron], +D*%282010%29+lepton+antineutrino%22">anti-B0 --> D*(2010) lepton antineutrino, electron positron: annihilation, S042RH, S052CB1, KEK-B, statistical analysis, correction [electroweak interaction], form factor: parametrization, Particle Physics Experiments, ddc:530, form factor [decay], B: pair production, Heavy Quark Effective Theory, Desig=181 [S042], electron positron: colliding beams, pair production [B], electroweak interaction: correction, S042:Desig=181, CKM matrix, electroproduction [Upsilon(10570)], semileptonic decay [anti-B0], colliding beams [electron positron], decay: form factor, anti-B0: semileptonic decay, S042RV, experimental results
Abstract: Physical review / D 103(7), 079901 (2021). doi:10.1103/PhysRevD.103.079901, Published by Inst., Melville, NY
Published: 2021
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5. Study of $B \to p {\bar p} \pi \pi$

Author: Chu, K., Wang, M.-Z., Badhrees, I., Nakano, E., Nakano, T., Nakao, M., Nath, K. J., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ono, H., Onuki, Y., Bahinipati, S., Oskin, P., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Pardi, S., Park, C. W., Park, H., Park, S.-H., Paul, S., Bakich, A. M., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Prim, M. T., Resmi, P. K., Ritter, M., Rostomyan, A., Rout, N., Behera, P., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Santelj, L., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Beleno, C., Seino, Y., Senyo, K., Sevior, M. E., Shen, C. P., Shiu, J.-G., Solovieva, E., Staric, M., Stottler, Z. S., Sumiyoshi, T., Sutcliffe, W., Bennett, J., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Varner, G., Bhardwaj, V., Vinokurova, A., Vossen, A., Wang, B., Wang, C. H., Wang, P., Wang, X. L., Wiechczynski, J., Won, E., Yang, S. B., Ye, H., Bhuyan, B., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., Belle Collaboration, Biswal, J., Bobrov, A., Adachi, I., Bonvicini, G., Bozek, A., Bracko, M., Campajola, M., Cao, L., Cervenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Aihara, H., Chilikin, K., Cho, H. E., Cho, K., Choi, S.-K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Capua, F., Al Said, S., Di Carlo, S., Dolezal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Frey, A., Fulsom, B. G., Garg, R., Asner, D. M., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Hartbrich, O., Hayasaka, K., Hayashii, H., Hou, W.-S., Aulchenko, V., Hsu, C.-L., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jin, Y., Aushev, T., Joffe, D., Joo, K. K., Karyan, G., Kawasaki, T., Kim, D. Y., Kim, S. H., Kinoshita, K., Kodys, P., Korpar, S., Krizan, P., Ayad, R., Kroeger, R., Krokovny, P., Kulasiri, R., Kwon, Y.-J., Lai, Y.-T., Lee, I. S., Lee, S. C., Li, L. K., Li Gioi, L., Libby, J., Babu, V., Lieret, K., Liventsev, D., Luo, T., Masuda, M., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mori, T., and Mussa, R.
Subjects: KEK-B, ddc:530, BELLE, branching ratio
Abstract: Physical review / D D 101(5), 052012 (2020). doi:10.1103/PhysRevD.101.052012, Using a data sample of $772 × 10^6$ $B\bar B$ pairs collected on the $ϒ(4S)$ resonance with the Belle detector at the KEKB asymmetric energy $e^+e^-$ collider, we report the observation of $B^0 \to p\bar{p} π^+ π^-$ and the first observation of $B^+\to p\bar{p} π^+ π^0$. We measure a decay branching fraction of $(0.83±0.17±0.17) × 10^{-6}$ in $B^0 \to p\bar p π^+ π^-$ for $M_{π^+ π^-} < 1.22 GeV/c^2$ with a significance of 5.5 standard deviations. The contribution from $B^0 \to p\bar{p} K^0$ is excluded. We measure a decay branching fraction of $(4.58±1.17±0.67) × 10^{-6}$ for $B^+ \to p\bar{p} π^+ π^0$ with $M_{π^+ π^0} < 1.3 GeV/c^2$ with a significance of 5.4 standard deviations. We study the difference of the $M_{p\bar{p}}$ distributions in $B^0 \to p\bar{p} π^+ π^-$ and $B^+ \to p\bar{p} π^+ π^0$., Published by Inst.302363, Melville, NY
Published: 2020
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6. Test of lepton flavor universality in ${B\to K^\ast\ell^+\ell^-}$ decays at Belle

Author: Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Al Said, S., 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., Grosse Perdekamp, M., 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., Li Gioi, L., 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: Upsilon(10570): electroproduction, B: pair production, B: semileptonic decay, K*(892), branching ratio: ratio: measured, BELLE, electron positron: colliding beams, +K*%28892%29+electron+positron%22">B --> K*(892) electron positron, electron positron: annihilation, muon: pair production, electron: pair production, lepton: flavor: universality, KEK-B, +K*%28892%29+muon%2B+muon%22">B --> K*(892) muon+ muon, High Energy Physics::Experiment, B: branching ratio, experimental results
Abstract: We present a measurement of $R_{K^{\ast}}$, the ratio of the branching fractions ${\cal B}(B\to K^\ast \mu^+ \mu^-)$ and ${\cal B}(B\to K^\ast e^+ e^-)$, for both charged and neutral $B$ mesons. The ratio for charged $B$ mesons, $R_{K{^{\ast +}}}$, is the first measurement ever performed. 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 consistentwith Standard Model expectations.
Published: 2020
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7. Test of lepton flavor universality in $B \to K \ell^{+}\ell^{-}$ decays

Author: Abdesselam, A., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Al Said, S., 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., 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., Grosse Perdekamp, M., 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., Li Gioi, L., 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, Carsten, 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., 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., Pesántez, 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: Upsilon(10570): electroproduction, B: pair production, B: semileptonic decay, dilepton: mass spectrum, branching ratio: ratio: measured, isospin: asymmetry, BELLE, electron positron: colliding beams, B: branching ratio: measured, electron positron: annihilation, +K+electron+positron%22">B --> K electron positron, mass dependence, +K+muon%2B+muon%22">B --> K muon+ muon, muon: pair production, electron: pair production, muon: final state, lepton: flavor: universality, KEK-B, statistical, experimental results
Abstract: We present measurements of the branching fractions for the decays $B\to K \mu^{+}\mu^{-}$ and $B\to K e^{+}e^{-}$, and their ratio ($R_{K}$), using a data sample of 711 $fb^{-1}$ that contains $772 \times 10^{6}$ $B\bar{B}$ events. The data were collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The ratio $R_{K}$ is measured in four bins of dilepton invariant-mass squared, $q^{2}$; the results are \begin{eqnarray*} R_{K} = \begin{cases} 0.95~ ^{+0.27}_{-0.24} \pm 0.06 & q^{2} \in (0.1,4.0)~\mathrm{\,GeV^2}c^4 \, , 0.81~ ^{+0.28}_{-0.23} \pm 0.05 & q^{2} \in (4.0,8.12)~\mathrm{\,GeV^2}c^4 \, , 0.98~ ^{+0.27}_{-0.23} \pm 0.06 & q^{2} \in (1.0,6.0)~\mathrm{\,GeV^2}c^4 \, , 1.11~ ^{+0.29}_{-0.26} \pm 0.07 & q^{2} > 14.18~\mathrm{\,GeV^2}c^4 \, . \end{cases} \end{eqnarray*} The first uncertainties listed are statistical, and the second uncertainties are systematic. The $R_{K}$ value in the whole $q^2$ range is found to be $1.06~ ^{+0.15}_{-0.14} \pm 0.07$. We also measure $CP-$averaged isospin asymmetries in the same $q^{2}$ bins; the results are consistent with a null asymmetry with the largest difference of 2.7 standard deviations is found in the $q^{2}\in(1.0,6.0)~\mathrm{\,GeV^2}c^4 \,$ bin in the mode with muon final states. The measured branching fractions are $\cal B\rm{\it(B\to K \mu^{+}\mu^{-})}= (5.5 \pm0.5 \pm0.3) \times 10^{-7}$ and $\cal B\rm{\it(B\to K e^{+}e^{-})} = (5.1 \pm 0.5 \pm0.3) \times 10^{-7}$. These results are compatible with standard model expectations.
Published: 2020
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8. Measurement of $R ( D )$ and $R ( D^ * )$ with a Semileptonic Tagging Method

Author: Caria, G., Urquijo, P., Bahinipati, S., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Bakich, A. M., Matvienko, D., Merola, M., Metzner, F., Miyabayashi, K., Mohanty, G. B., Moon, T. J., Mori, T., Mussa, R., Nakamura, K. R., Nakao, M., Behera, P., Nath, K. J., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, K., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Beleño, C., Pakhlova, G., Pal, B., Pang, T., Park, H., Park, S.-H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Bennett, J., Popov, V., Prencipe, E., Prim, M. T., Rabusov, A., Resmi, P. K., Ritter, M., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Bhuyan, B., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Bilka, T., Senyo, K., Sevior, M. E., Shebalin, V., Shiu, J.-G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Biswal, J., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Trabelsi, K., Uchida, M., Uglov, T., Uno, S., Bozek, A., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Varvell, K. E., Vossen, A., Waheed, E., Wang, B., Wang, C. H., Wang, M.-Z., Bračko, M., Wang, P., Wang, X. L., Watanuki, S., Wiechczynski, J., Won, E., Yamamoto, H., Yang, S. B., Ye, H., Yin, J. H., Yuan, C. Z., Adachi, I., Browder, T. E., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., Belle Collaboration, Campajola, M., Červenkov, D., Chang, P., Cheaib, R., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Aihara, H., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Di Capua, F., Di Carlo, S., Doležal, Z., Al Said, S., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Asner, D. M., Garmash, A., Giri, A., Goldenzweig, P., Greenwald, D., Grzymkowska, O., Guan, Y., Hartbrich, O., Hayasaka, K., Hayashii, H., Higuchi, T., Atmacan, H., Hou, W.-S., Hsu, C.-L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Aushev, T., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Babu, V., 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., Badhrees, I., Kroeger, R., Krohn, J.-F., Krokovny, P., Kuhr, T., Kumar, R., Kwon, Y.-J., Lange, J. S., Lee, I. S., Lee, J. K., and Lee, S. C.
Subjects: B: semileptonic decay, +K%2B+K%22">D0 --> K+ K, annihilation [electron positron], D*(2010): hadronic decay, +K0%28S%29+pi%2B+pi0%22">D+ --> K0(S) pi+ pi0, +K0%28S%29+K%2B%22">D+ --> K0(S) K+, +D0+pi%2B%22">D*(2010)+ --> D0 pi+, +K-+2pi%2B%22">D+ --> K- 2pi+, +K0%28S%29+pi%2B%22">D+ --> K0(S) pi+, +pi%2B+pi%22">D0 --> pi+ pi, B: branching ratio, +K0%28S%29+pi%2B+pi%22">D0 --> K0(S) pi+ pi, B: pair production, +K-+K%2B+pi%2B%22">D+ --> K- K+ pi+, +K0%28S%29+pi0%22">D0 --> K0(S) pi0, D: hadronic decay, electron positron: colliding beams, hadronic decay [D], mass difference: (D*(2010) D), pair production [B], electroproduction [Upsilon(10570)], colliding beams [electron positron], +K-+pi%2B+pi0%22">D0 --> K- pi+ pi0, Upsilon(10570): electroproduction, +K0%28S%29+2pi%2B+pi%22">D+ --> K0(S) 2pi+ pi, BELLE, electron positron: annihilation, +K-+2pi%2B+pi%22">D0 --> K- 2pi+ pi, branching ratio [B], KEK-B, ddc:530, hadronic decay [D*(2010)], +D%2B+pi0%22">D*(2010)+ --> D+ pi0, +D+tau-+antineutrino%2Ftau%22">B --> D tau- antineutrino/tau, +D0+pi0%22">D*(2010)0 --> D0 pi0, (D*(2010) D) [mass difference], branching ratio: ratio: measured, +K0%28S%29+K%2B+K%22">D0 --> K0(S) K+ K, +K-+pi%2B%22">D0 --> K- pi+, +D*%282010%29+tau-+antineutrino%2Ftau%22">B --> D*(2010) tau- antineutrino/tau, semileptonic decay [B], ratio: measured [branching ratio], experimental results
Abstract: Physical review letters 124(16), 161803 (2020). doi:10.1103/PhysRevLett.124.161803, The experimental results on the ratios of branching fractions R(D)=B(¯B→Dτ−¯ντ)/B(¯B→Dℓ−¯νℓ) and R(D∗)=B(¯B→D∗τ−¯ντ)/B(¯B→D∗ℓ−¯νℓ), where ℓ denotes an electron or a muon, show a long-standing discrepancy with the standard model predictions, and might hint at a violation of lepton flavor universality. We report a new simultaneous measurement of R(D) and R(D∗), based on a data sample containing 772×106 B¯B events recorded at the Υ(4S) resonance with the Belle detector at the KEKB e+e− collider. In this analysis the tag-side B meson is reconstructed in a semileptonic decay mode and the signal-side τ is reconstructed in a purely leptonic decay. The measured values are R(D)=0.307±0.037±0.016 and R(D∗)=0.283±0.018±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, 1.1, and 0.8 standard deviations for R(D), R(D∗), and their combination, respectively. This work constitutes the most precise measurements of R(D) and R(D∗) performed to date as well as the first result for R(D) based on a semileptonic tagging method, Published by APS, College Park, Md.
Published: 2020
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9. Study of $B \to p {\bar p} \pi \pi$

Author: Chu, K., Wang, M.-Z., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Behera, P., Beleno, C., Bennett, J., Bhardwaj, V., Bhuyan, B., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bracko, M., Campajola, M., Cao, L., 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., Dash, N., Di Capua, F., Di Carlo, S., Dolezal, 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., Giri, A., Goldenzweig, P., Golob, B., Hartbrich, O., 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., Jin, Y., Joffe, D., Joo, K. K., Karyan, G., Kawasaki, T., Kim, D. Y., Kim, S. H., Kinoshita, K., Kodys, P., Korpar, S., Krizan, P., Kroeger, R., Krokovny, P., Kulasiri, R., Kwon, Y.-J., Lai, Y.-T., Lee, I. S., Lee, S. C., Li, L. K., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., Luo, T., Masuda, M., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mori, T., Mussa, R., Nakano, E., Nakano, T., Nakao, M., Nath, K. J., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pal, B., Pang, T., Pardi, S., Park, C. W., Park, H., Park, S.-H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Prim, M. T., Resmi, P. K., Ritter, M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Santelj, L., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shen, C. P., Shiu, J.-G., Solovieva, E., Staric, M., Stottler, Z. S., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Varner, G., Vinokurova, A., Vossen, A., Wang, B., Wang, C. H., Wang, P., Wang, X. L., Wiechczynski, J., Won, E., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: KEK-B, BELLE, branching ratio
Abstract: Physical review / D D 101(5), 052012 (2020). doi:10.1103/PhysRevD.101.052012, Using a data sample of $772 × 10^6$ $B\bar B$ pairs collected on the $ϒ(4S)$ resonance with the Belle detector at the KEKB asymmetric energy $e^+e^-$ collider, we report the observation of $B^0 \to p\bar{p} π^+ π^-$ and the first observation of $B^+\to p\bar{p} π^+ π^0$. We measure a decay branching fraction of $(0.83±0.17±0.17) × 10^{-6}$ in $B^0 \to p\bar p π^+ π^-$ for $M_{π^+ π^-} < 1.22 GeV/c^2$ with a significance of 5.5 standard deviations. The contribution from $B^0 \to p\bar{p} K^0$ is excluded. We measure a decay branching fraction of $(4.58±1.17±0.67) × 10^{-6}$ for $B^+ \to p\bar{p} π^+ π^0$ with $M_{π^+ π^0} < 1.3 GeV/c^2$ with a significance of 5.4 standard deviations. We study the difference of the $M_{p\bar{p}}$ distributions in $B^0 \to p\bar{p} π^+ π^-$ and $B^+ \to p\bar{p} π^+ π^0$., Published by Melville, NY
Published: 2020
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10. Search for $\Omega(2012)\to K\Xi(1530) \to K\pi\Xi$ at Belle

Author: Jia, S., Shen, C. P., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Bakich, A. M., Behera, P., 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., Li Gioi, L., 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: baryon, Upsilon(10355), High Energy Physics::Experiment, BELLE, branching ratio: ratio, Upsilon(9460), Xi(1530), decay modes, Upsilon(10020)
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.
Published: 2019
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11. Search for $B ^0 → X ( 3872 ) γ$

Author: Chou, P.-C., Chang, P., Adachi, I., Aihara, H., Al Said, S., 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., Li Gioi, L., 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.
Abstract: Physical review / D 100(1), 012002 (2019). doi:10.1103/PhysRevD.100.012002, We report the results of a search for the decay $B^0 → X(3872)(→ J/ψ π^+ π^−)γ$. The analysis is performed on a data sample corresponding to an integrated luminosity of 711fb$^{−1}$ 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 $Υ(4S)$ resonance energy. We find no evidence for a signal and place an upper limit of $\mathcal{B}(B^0 → X(3872)γ) \times \mathcal{B}(X(3872) → J/ψ π^+ π^−) < 5.1 \times 10^{−7}$ at 90% confidence level., Published by APS, College Park, MD
Published: 2019
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12. Search for the $B \to Y(4260) K, ~Y(4260) \to J/\psi \pi^+\pi^-$ decays

Author: Garg, R., Bhardwaj, V., Singh, J. B., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., 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., Li Gioi, L., 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: J/psi(3100), B0: hadronic decay, Upsilon(10570): electroproduction, Y(4260): hadronic decay, background, Y(4260): branching ratio, +Y%284260%29+K%2B%22">B+ --> Y(4260) K+, B0: branching ratio, BELLE, electron positron: colliding beams, electron positron: annihilation, +J%2Fpsi%283100%29+pi%2B+pi%22">Y(4260) --> J/psi(3100) pi+ pi, +Y%284260%29+K0%22">B0 --> Y(4260) K0, KEK-B, branching ratio: measured, B+: hadronic decay, mass spectrum: (J/psi(3100) pi+ pi-), pi: pair production, B+: branching ratio, experimental results
Abstract: We report the results of a search for the $B → Y(4260)K, Y(4260) → J/ψπ^+π^−$ decays. This study is based on a data sample corresponding to an integrated luminosity of $711 fb^{−1}$, collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^−$ collider. We investigate the $J/ψπ^+π^−$ invariant mass distribution in the range 4.0 to 4.6 $GeV/c^2$ using both $B^+ → J/ψπ^+π^− K^+$ and $B^0 → J/ψπ^+π^− K^0_S$ 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 $B → Y(4260)K$ decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, $\mathcal{B}(B^+ → Y(4260)K^+) × \mathcal{B}(Y(4260) → J/ψπ^+π^−) < 1.4 × 10^{−5}$ and $\mathcal{B}(B^0 → Y(4260)K^0) × \mathcal{B}(Y(4260) → J/ψπ^+π^−) < 1.7 × 10^{−5}$ at the 90\% confidence level.
Published: 2019
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13. Measurement of branching fraction and final-state asymmetry for the $\bar{B}^{0}\to K^{0}_{S}K^{\mp}\pi^{\pm}$ decay

Author: Lai, Y.-T., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Babu, Varghese, Badhrees, I., 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., 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., Ishikawa, A., 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., Li Gioi, L., 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., 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., Shibata, T.-A., 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., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: +pi%2B+K-+K0%28S%29%22">anti-B0 --> pi+ K- K0(S), Upsilon(10570): electroproduction, Dalitz plot, BELLE, electron positron: colliding beams, electron positron: annihilation, mass spectrum: (K pi), mass spectrum: (K K0(S)), anti-B0: branching ratio: measured, KEK-B, anti-B0: hadronic decay, High Energy Physics::Experiment, structure, +pi-+K%2B+K0%28S%29%22">anti-B0 --> pi- K+ K0(S), statistical, asymmetry, experimental results
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.
Published: 2019
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14. Evidence for $B^+ \rightarrow h_c K^+$ and observation of $\eta_c(2S) \to p \bar{p} \pi^+ \pi^-$

Author: 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., Li Gioi, L., 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: B0: hadronic decay, Upsilon(10570): electroproduction, h/c(3526), +h%2Fc%283526%29+K0%28S%29%22">B0 --> h/c(3526) K0(S), B+: branching ratio: measured, B0: branching ratio: upper limit, mass spectrum: (p anti-p pi+ pi-), BELLE, electron positron: colliding beams, electron positron: annihilation, +p+anti-p+pi%2B+pi%22">eta/c(3590) --> p anti-p pi+ pi, KEK-B, B+: hadronic decay, eta/c(3590): hadronic decay, +h%2Fc%283526%29+K%2B%22">B+ --> h/c(3526) K+, experimental results, +p+anti-p+pi%2B+pi-+K%2B%22">B+ --> p anti-p pi+ pi- K+
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.
Published: 2019
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15. Measurements of branching fraction and direct $CP$ 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: Kaliyar, A. B., Behera, P., Mohanty, G. B., Gaur, V., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, Varghese, Badhrees, I., Bahinipati, S., Bakich, A. M., Bansal, V., Beleño, C., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, 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., Dingfelder, J., Doležal, Z., Dong, T. V., Drásal, 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., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, 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., Li Gioi, L., 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., Starič, 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: Upsilon(10570), KEK-B, branching ratio: measured, BELLE, 4/3, meson, asymmetry, hadronic decay
Abstract: Physical review / D 99(3), 031102 (2019). doi:10.1103/PhysRevD.99.031102, We study charmless hadronic decays of charged B mesons to the final states $K_{S}^{0}K_{S}^{0}K^±$ and $K_{S}^{0}K_{S}^{0}π^±$ using a 711 fb$^{-1}$ data sample that contains 772×10$^6$ $B\bar{B}$ pairs and was collected at the $ϒ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. For $B^± → K_{S}^{0}K_{S}^{0}K^±$, the measured branching fraction and direct CP asymmetry are $[10.42±0.43(stat)±0.22(syst)] × 10^{-6 }$ and $[+1.6±3.9(stat)±0.9(syst)]\%$, respectively. In the absence of a statistically significant signal for $B^± → K_{S}^{0}K_{S}^{0}K^±$, we obtain a 90% confidence-level upper limit on its branching fraction as $8.7 × 10^{-7}$., Published by APS, College Park, MD
Published: 2019
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16. Azimuthal asymmetries of back-to-back $\pi^\pm-(\pi^0,\eta,\pi^\pm)$ pairs in $e^+e^-$ annihilation

Author: Li, H., Vossen, A., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Babu, V., Badhrees, I., Bakich, A. M., Bennett, J., Bhardwaj, V., Bilka, T., Biswal, J., Bobrov, A., Bračko, M., Campajola, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Capua, F., Di Carlo, S., Dong, T. V., Eidelman, S., Ferber, T., Fulsom, B. G., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Hartbrich, O., Hayasaka, K., Hayashii, H., Huang, K., Inami, K., Ishikawa, A., Itoh, R., Jacobs, W. W., Jang, E.-J., Jia, S., Jin, Y., Kang, K. H., Karyan, G., Kim, D. Y., Kim, S. H., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kwon, Y.-J., Lee, S. C., Li, Y. B., Li Gioi, L., Libby, J., Lieret, K., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Merola, M., Miyata, H., Mizuk, R., Mussa, R., Nakano, T., Nakao, M., Nath, K. J., Natkaniec, Z., Nishida, S., Ono, H., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Prim, M. T., Russo, G., Sahoo, D., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seidl, R., Seino, Y., Senyo, K., Shiu, J.-G., Simon, F., Solovieva, E., Starič, M., Stottler, Z. S., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uno, S., Van Tonder, R., Varner, G., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Watanabe, M., Won, E., Yang, S. B., Ye, Hua, Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: angular distribution: asymmetry, flavor, BELLE, transverse momentum, transverse momentum dependence, meson, fragmentation function, annihilation, High Energy Physics::Experiment, thrust, structure, hadron, Collins, Nuclear Experiment
Abstract: This work reports the first observation of azimuthal asymmetries around the thrust axis in $e^+e^-$ annihilation of pairs of back-to-back charged pions in one hemisphere, and $\pi^0$ and $\eta$ mesons in the opposite hemisphere. These results are complemented by a new analysis of pairs of back-to-back charged pions. The $\pi^0$ and $\eta$ asymmetries rise with the relative momentum $z$ of the detected hadrons as well as with the transverse momentum with respect to the thrust axis. These asymmetries are sensitive to the Collins fragmentation function $H_1^{\perp}$ and provide complementary information to previous measurements with charged pions and kaons in the final state. In particular, the $\eta$ final states will provide additional information on the flavor structure of $H_1^{\perp}$. This is the first measurement of the explicit transverse-momentum dependence of the Collins fragmentation function from Belle data. It uses a dataset of 980.4~fb$^{-1}$ collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV.
Published: 2019
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17. Evidence for $B^ + → h_ c K^ +$ and observation of $η_c ( 2 S ) → p \bar{p} π + π −$

Author: 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., Li Gioi, L., 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.
Abstract: Physical review / D 100(1), 012001 (2019). doi:10.1103/PhysRevD.100.012001, 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., Published by Soc., [S.l.]
Published: 2019
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18. Measurement of the branching fraction and time-dependent $CP$ asymmetry for $B^0\to J/\psi\pi^0$ decays

Author: Pal, B., Schwartz, A. J., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Badhrees, I., Bahinipati, S., Bansal, V., Behera, P., Beleño, C., Bhuyan, B., Bilka, T., Biswal, J., Bozek, A., Bračko, M., Cao, L., Červenkov, D., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., Di Carlo, S., Doležal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Golob, B., Guan, Y., Hara, T., Hayasaka, K., Hayashii, H., Higuchi, T., Hou, W.-S., Hsu, C.-L., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Joffe, D., Julius, T., Karyan, G., 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., Kumar, R., Kuzmin, A., Kwon, Y.-J., Lalwani, K., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Lu, P.-C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Nakano, E., Nakao, M., Nath, K. J., Natkaniec, Z., Nayak, M., Nishida, S., Ogawa, S., Ono, H., Pakhlova, G., Pardi, S., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Purohit, M. V., Ritter, M., Russo, G., Sahoo, D., Sakai, Y., 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., Shibata, T.-A., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tao, Y., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Van Tonder, R., Varner, G., Varvell, K. E., Vorobyev, V., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Wang, X. L., Widmann, E., Won, E., Yelton, J., Yin, J. H., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Abstract: Physical review / D 98(11), 112008 (2019). doi:10.1103/PhysRevD.98.112008, We measure the branching fraction and time-dependent $CP$-violating asymmetry for $B^0\to J/\psi\pi^0$ decays using a data sample of 711 ${\rm fb^{-1}}$ collected on the $\Upsilon(4S)$ resonance by the Belle experiment running at the KEKB $e^+e^-$ collider. The branching fraction is measured to be $\mathcal{B}(B^0\to J/\psi\pi^0) = [1.62\,\pm 0.11~({\rm stat}) \pm0.07~({\rm syst})]\times 10^{-5}$, which is the most precise measurement to date. The measured $CP$ asymmetry parameters are $\mathcal{S} = -0.59\,\pm 0.19~({\rm stat}) \pm 0.03~({\rm syst})$ and $\mathcal{A} = -0.15\,\pm 0.14~({\rm stat})\,^{+0.04}_{-0.03}~({\rm syst})$. The mixing-induced $CP$ asymmetry ($\mathcal{S}$) differs from the case of no $CP$ violation by 3.0 standard deviations, and the direct $CP$ asymmetry ($\mathcal{A}$) is consistent with zero., Published by APS, College Park, MD
Published: 2019
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19. Search for the $B \to Y(4260) K, ~Y(4260) \to J/\psi \pi^+\pi^-$ decays

Author: Garg, R., Bhardwaj, V., Singh, J. B., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., 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., Li Gioi, L., 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: J/psi(3100), B0: hadronic decay, Upsilon(10570): electroproduction, Y(4260): hadronic decay, background, Y(4260): branching ratio, +Y%284260%29+K%2B%22">B+ --> Y(4260) K+, B0: branching ratio, BELLE, electron positron: colliding beams, electron positron: annihilation, +J%2Fpsi%283100%29+pi%2B+pi%22">Y(4260) --> J/psi(3100) pi+ pi, +Y%284260%29+K0%22">B0 --> Y(4260) K0, KEK-B, branching ratio: measured, B+: hadronic decay, mass spectrum: (J/psi(3100) pi+ pi-), pi: pair production, B+: branching ratio, experimental results
Abstract: Physical review / D 99(7), 071102 (2019). doi:10.1103/PhysRevD.99.071102, We report the results of a search for the $B → Y(4260)K, Y(4260) → J/ψπ^+π^−$ decays. This study is based on a data sample corresponding to an integrated luminosity of $711 fb^{−1}$, collected at the $Υ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^−$ collider. We investigate the $J/ψπ^+π^−$ invariant mass distribution in the range 4.0 to 4.6 $GeV/c^2$ using both $B^+ → J/ψπ^+π^− K^+$ and $B^0 → J/ψπ^+π^− K^0_S$ 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 $B → Y(4260)K$ decays, respectively, taking into account the systematic uncertainties. These correspond to upper limits on the product of branching fractions, $\mathcal{B}(B^+ → Y(4260)K^+) × \mathcal{B}(Y(4260) → J/ψπ^+π^−) < 1.4 × 10^{−5}$ and $\mathcal{B}(B^0 → Y(4260)K^0) × \mathcal{B}(Y(4260) → J/ψπ^+π^−) < 1.7 × 10^{−5}$ at the 90\% confidence level., Published by APS, College Park, MD
Published: 2019
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20. 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, Yinghui, 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, Hua, Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Belle II Collaboraiton
Subjects: Higgs particle: coupling, Upsilon(10570): electroproduction, High Energy Physics::Phenomenology, B+: branching ratio: upper limit, resolution, BELLE, electron positron: colliding beams, electron positron: annihilation, neutrino: sterile, suppression, B+: leptonic decay, sensitivity, helicity, Higgs particle: doublet, neutrino: mass: lower limit, KEK-B, +muon%2B+neutrino%2Fmu%22">B+ --> muon+ neutrino/mu, CKM matrix, neutrino: massive, +muon%2B+neutrino%22">B+ --> muon+ neutrino, statistical analysis: frequentist, High Energy Physics::Experiment, muon: momentum spectrum, experimental results
Abstract: We report the result for a search for the leptonic decay of B+→μ+νμ using the full Belle data set of 711 fb−1 of integrated luminosity at the Υ(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 μ into the signal B meson rest-frame, in which the μ has a monochromatic momentum spectrum. Though its momentum is smeared by the experimental resolution, this technique improves the analysis sensitivity considerably. Analyzing the μ momentum spectrum in this frame we find B(B+→μ+νμ)=(5.3±2.0±0.9)×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 B(B+→μ+νμ)
Published: 2019
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21. Observation of $τ^ − → π^ − ν_ τ e^ + e^ −$ and search for $τ ^− → π^ − ν_ τ μ ^+ μ^ −$

Author: Jin, Yifan, Aihara, H., Epifanov, D., Adachi, I., Al Said, S., 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., Garmash, A., 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., Li Gioi, L., 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., Purohit, M. V., 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: tau: branching ratio: upper limit, tau: rare decay, mass spectrum: (pi electron positron), BELLE, electron positron: colliding beams, +pi-+neutrino%2Ftau+muon%2B+muon%22">tau- --> pi- neutrino/tau muon+ muon, electron positron: annihilation, electron: pair production, muon: pair production, phase space, +pi-+neutrino%2Ftau+electron+positron%22">tau- --> pi- neutrino/tau electron positron, KEK-B, current: axial-vector, efficiency, mediation, tau: branching ratio: measured, statistical, tau: semileptonic decay, experimental results
Abstract: Physical review / D D 100(7), 071101 (2019). doi:10.1103/PhysRevD.100.071101, We present the first measurements of branching fractions of rare tau-lepton decays, τ-→π-ντℓ+ℓ- (ℓ=e or μ), 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 τ-→π-ντe+e- decay is observed for the first time with 7.0σ 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 Mπee>1.05 GeV/c2 is measured to be B(τ-→π-ντe+e-)[Mπ-e+e->1.05 GeV/c2]=(5.90±0.53±0.85±0.11)×10-6, where the first uncertainty is statistical, the second is systematic, and the third is due to 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 BA(τ-→π-ντe+e-)=(1.46±0.13±0.21)×10-5 to BV(τ-→π-ντe+e-)=(3.01±0.27±0.43)×10-5, respectively. An upper limit is set on the branching fraction of the τ-→π-ντμ+μ- decay, B(τ-→π-ντμ+μ-), Published by American Physical Society, Melville, NY
Published: 2019
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22. Measurement of the CKM matrix element $|V_{cb}|$ from $B^0\to D^{*-}\ell^ {+} \nu_\ell$ at Belle

Author: Waheed, E., Urquijo, P., Ferlewicz, D., Adachi, I., Adamczyk, K., Ahn, J. K., Aihara, H., Al Said, S., 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., 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., Glattauer, R., Goh, Y. M., Goldenzweig, P., Golob, B., Greenwald, D., Grosse Perdekamp, M., 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, 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., Li Gioi, L., 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., 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., Palka, H., Panzenböck, E., Pardi, S., Park, C.-S., Park, C. W., Park, H., Park, K. S., Park, S.-H., 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., Tikhomirov, I., Trabelsi, K., Tsuboyama, T., Uchida, M., Uchida, T., Ueda, I., Uehara, S., Uglov, T., Unno, Y., Uno, S., 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., 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, L. M., Zhang, Z. P., Zhao, L., Zhilich, V., Zhukova, V., Zhulanov, V., Zivko, T., Zupanc, A., Zwahlen, N., and Collaboration, Belle
Subjects: data analysis method, Upsilon(10570): electroproduction, B: pair production, Heavy Quark Effective Theory, BELLE, electron positron: colliding beams, electron positron: annihilation, electroweak interaction: correction, KEK-B, statistical analysis, CKM matrix, form factor: parametrization, decay: form factor, anti-B0: semileptonic decay, +D*%282010%29+lepton+antineutrino%22">anti-B0 --> D*(2010) lepton antineutrino, experimental results
Abstract: Physical review / D D D100(5), 052007 (2019). doi:10.1103/PhysRevD.100.052007, We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| from B0→D*-ℓ+νℓ decays, reconstructed with the full Belle data set of 711 fb−1 integrated luminosity. Two form factor parametrizations, originally conceived by the Caprini-Lellouch-Neubert (CLN) and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product F(1)ηEW|Vcb| and the decay form factors, where F(1) is the normalization factor and ηEW is a small electroweak correction. In the CLN parametrization we find F(1)ηEW|Vcb|=(35.06±0.15±0.56)×10-3, ρ2=1.106±0.031±0.007, R1(1)=1.229±0.028±0.009, R2(1)=0.852±0.021±0.006. For the BGL parametrization we obtain F(1)ηEW|Vcb|=(34.93±0.23±0.59)×10-3, which is consistent with the world average when correcting for F(1)ηEW. The branching fraction of B0→D*-ℓ+νℓ is measured to be B(B0→D*-ℓ+νℓ)=(4.90±0.02±0.16)%. We also present a new test of lepton flavor universality violation in semileptonic B decays, B(B0→D*-e+ν)B(B0→D*-μ+ν)=1.01±0.01±0.03. The errors quoted correspond to the statistical and systematic uncertainties, respectively. This is the most precise measurement of F(1)ηEW|Vcb| and form factors to date and the first experimental study of the BGL form factor parametrization in an experimental measurement., Published by American Physical Society, Melville, NY
Published: 2019
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23. Observation of $\Xi(1620)^0$ and evidence for $\Xi(1690)^0$ in $\Xi_c^+ \rightarrow \Xi^-\pi^+\pi^+$ decays

Author: Sumihama, M., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bansal, V., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., 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., Choudhury, S., Cinabro, D., Cunliffe, S., Czank, T., Dash, N., Di Carlo, S., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Guido, E., Haba, J., Hayasaka, K., Hayashii, H., Hirose, S., 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., Joo, K. K., Julius, T., Kaliyar, A. B., Kang, K. H., Karyan, G., Kato, Y., 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., Kumar, R., Kuzmin, A., Kwon, Y.-J., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mussa, R., Nakano, E., Nakano, T., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Niiyama, M., Nisar, N. K., Nishida, 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., Russo, G., Sahoo, D., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T.-A., Shiu, J.-G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Taniguchi, N., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Urquijo, P., Vahsen, S. E., Van Hulse, C., Varner, G., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Wang, X. L., Watanabe, M., Watanuki, S., 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.
Abstract: Physical review letters 122(7), 072501 (2019). doi:10.1103/PhysRevLett.122.072501, We report the first observation of the doubly-strange baryon $\Xi(1620)^0$ in its decay to $\Xi^-\pi^+$ via $\Xi_c^+ \rightarrow \Xi^- \pi^+ \pi^+$ decays based on a $980\,{\rm fb}^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The mass and width are measured to be 1610.4 $\pm$ 6.0 (stat) $^{+5.9}_{-3.5}$ (syst)~MeV$/c^2$ and 59.9 $\pm$ 4.8 (stat) $^{+2.8}_{-3.0}$ (syst)~MeV, respectively. We obtain 4.0$\sigma$ evidence of the $\Xi(1690)^0$ with the same data sample. These results shed light on the structure of hyperon resonances with strangeness $S=-2$., Published by APS, College Park, Md.
Published: 2019
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24. Observation of $B^{+} \rightarrow p\bar{\Lambda} K^+ K^-$ and $B^{+} \rightarrow \bar{p}\Lambda K^+ K^+$

Author: Lu, P. C., Wang, M. Z., Chistov, R., Chang, P., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Beleno, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., 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., 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., Hayasaka, K., Hayashii, H., Hirose, S., Hou, W. S., Hsu, C. L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Kaliyar, A. B., Kawasaki, T., Kichimi, H., 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., Kuzmin, A., Kwon, Y. J., Lai, Y. T., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., 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., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Ono, H., Ozaki, H., Pakhlov, P., 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., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. A., Shiu, J. G., Shwartz, B., Simon, F., Singh, J. B., 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 Hulse, C., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Watanabe, M., Watanuki, S., Widmann, E., Won, E., Ye, Hua, Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Abstract: Physical review / D 99(3), 032003 (2019). doi:10.1103/PhysRevD.99.032003, We report the study of $B^{+} \rightarrow p\bar{\Lambda} K^+ K^-$ and $B^{+} \rightarrow \bar{p}\Lambda K^+ K^+$ using a $772 \times 10^6$ $B\bar{B}$ pair data sample recorded on the $\Upsilon({\rm 4S})$ resonance with the Belle detector at KEKB. These include the observations of decay modes with the corresponding branching fractions $\mathcal{B}$($B^{+} \rightarrow p\bar{\Lambda} K^+ K^-$ ) $=$ $(4.22^{+0.45}_{-0.44}\pm 0.51)\times10^{-6}$, $\mathcal{B}$($B^{+} \rightarrow \bar{p}\Lambda K^+ K^+$) $=$ $(3.81^{+0.39}_{-0.37} \pm 0.45)\times 10^{-6}$, $\mathcal{B}$($\eta_c \rightarrow p \bar{\Lambda} K^-$) $=$ $(2.9^{+0.4}_{-0.3}\pm 0.4)\times10^{-3}$ and $\mathcal{B}$($B^{+} \rightarrow p\bar{\Lambda} \phi$) $=$ $(0.818 \pm 0.215 \pm 0.078)\times10^{-6}$, where $\mathcal{B}$ denotes the decay branching fraction and the intermediate resonance decays are excluded in the four-body decay measurements., Published by APS, College Park, MD
Published: 2019
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25. First measurement of the CKM angle $\phi_3$ with $B^{\pm}\to D(K_{\rm S}^0\pi^+\pi^-\pi^0)K^{\pm}$ decays

Author: Resmi, P. K., Libby, J., Trabelsi, K., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Babu, V., Badhrees, I., Bakich, A. M., Beleño, C., Bennett, J., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bozek, A., Bračko, M., Campajola, M., Červenkov, D., Chen, A., Cheon, B. G., Cho, H. E., Cho, 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., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Guan, Y., 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., Jeon, H. B., Jin, Y., Joffe, D., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, R., Kuzmin, A., Kwon, Y.-J., Lee, S. C., Li, Y. B., Lieret, K., Liventsev, D., Lu, P.-C., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, H. K., Nakano, T., 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., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Prencipe, E., Prim, M. T., Ritter, M., Röhrken, M., Russo, G., Sahoo, D., Sakai, Y., 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., Shiu, J.-G., Shwartz, B., Solovieva, E., Starič, M., Stottler, Z. S., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Usov, Y., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Wang, M.-Z., Wang, X. L., Watanuki, S., Won, E., Yang, S. B., Ye, H., Zhang, Z. P., and Zhilich, V.
Subjects: Upsilon(10570), BELLE, suppression, CKM matrix: unitarity, meson, CLEO, statistical
Abstract: We present the first model-independent measurement of the CKM unitarity triangle angle $\phi_3$ using $B^{\pm}\to D(K_{\rm S}^0\pi^+\pi^-\pi^0)K^{\pm}$ decays, where $D$ indicates either a $D^{0}$ or $\overline{D}^{0}$ meson. Measurements of the strong-phase difference of the $D \to K_{\rm S}^0\pi^+\pi^-\pi^0$ amplitude obtained from CLEO-c data are used as input. This analysis is based on the full Belle data set of $772\times 10^{6}$ $B\overline{B}$ events collected at the $\Upsilon(4S)$ resonance. We obtain $\phi_3 = (5.7~^{+10.2}_{-8.8} \pm 3.5 \pm 5.7)^{\circ}$ and the suppressed amplitude ratio $r_{B} = 0.323 \pm 0.147 \pm 0.023 \pm 0.051$. Here the first uncertainty is statistical, the second is the experimental systematic, and the third is due to the precision of the strong-phase parameters measured from CLEO-c data. The 95% confidence interval on $\phi_3$ is $(-29.7,~109.5)^{\circ}$, which is consistent with the current world average.
Published: 2019
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26. 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, Varghese, 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., Li Gioi, L., 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: Upsilon(10570): electroproduction, B: pair production, X(3915): hadronic decay, B+: branching ratio: upper limit, branching ratio: ratio: upper limit, BELLE, electron positron: colliding beams, +X%283872%29+K%2B%22">B+ --> X(3872) K+, electron positron: annihilation, +chi%2Fc1%283510%29+pi0%22">X(3915) --> chi/c1(3510) pi0, chi/c1(3510), KEK-B, +chi%2Fc1%283510%29+pi0%22">X(3872) --> chi/c1(3510) pi0, +X%283915%29+K%2B%22">B+ --> X(3915) K+, B+: hadronic decay, X(3872): hadronic decay, +J%2Fpsi%283100%29+pi%2B+pi%22">X(3872) --> J/psi(3100) pi+ pi, experimental results
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.
Published: 2019
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27. Search for $B^0 \to X(3872) \gamma$

Author: Chou, P.-C., Chang, P., Adachi, I., Aihara, H., Al Said, S., 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., Li Gioi, L., 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: Upsilon(10570): electroproduction, B: pair production, branching ratio: upper limit, B0: branching ratio, BELLE, electron positron: colliding beams, electron positron: annihilation, 10.57 GeV-cms, KEK-B, resonance: energy, X(3872): hadronic decay, +J%2Fpsi%283100%29+pi%2B+pi%22">X(3872) --> J/psi(3100) pi+ pi, B0: radiative decay, +X%283872%29+photon%22">B0 --> X(3872) photon, experimental results
Abstract: We report the results of a search for the decay $B^0 → X(3872)(→ J/ψ π^+ π^−)γ$. The analysis is performed on a data sample corresponding to an integrated luminosity of 711fb$^{−1}$ 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 $Υ(4S)$ resonance energy. We find no evidence for a signal and place an upper limit of $\mathcal{B}(B^0 → X(3872)γ) \times \mathcal{B}(X(3872) → J/ψ π^+ π^−) < 5.1 \times 10^{−7}$ at 90% confidence level.
Published: 2019
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28. First measurements of absolute branching fractions of the $\Xi_c^+$ baryon at Belle

Author: Li, Y. B., Shen, C. P., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, Varghese, Bakich, A. M., Ban, Y., Bansal, V., Behera, P., Bele, 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., Li Gioi, L., 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.
Abstract: We present the first measurements of the absolute branching fractions of $\Xi_c^+$ decays into $\Xi^- \pi^+ \pi^+$, $p K^- \pi^+$, and $p \bar{K}^{*}(892)^{0}$ 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 $\Xi_c^+$ signal 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 ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+)$, ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to p K^- \pi^+)$, and ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to p \bar{K}^{*}(892)^{0})$. Dividing these product branching fractions by $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ yields: ${\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+) = [2.86 \pm 1.21(\rm stat.) \pm 0.38(\rm syst.)]\%$, ${\cal B}(\Xi_c^+ \to p K^- \pi^+)=[0.45 \pm 0.21(\rm stat.) \pm 0.07(\rm syst.)]\%$, and ${\cal B}(\Xi_c^+ \to p \bar{K}^{*}(892)^{0}) = [0.25 \pm 0.16(\rm stat.) \pm 0.04(\rm syst.)]\%$. 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.
Published: 2019
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29. Measurements of isospin asymmetry and difference of direct $CP$ asymmetries in inclusive $B \to X_s \gamma$ decays

Author: Watanuki, S., Ishikawa, A., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Brač, M., Browder, T. E., Cao, L., Červenkov, D., Chang, P., Cheon, B. G., Chilikin, K., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Di Carlo, S., Dingfelder, J., Dong, T. V., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Frey, A., Fulsom, B. G., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Guan, Y., Guido, E., Haba, J., Hayasaka, K., Hayashii, H., 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., Joo, K. K., Julius, T., Karyan, G., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, J. B., Kim, S. H., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križ, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, R., Kuzmin, A., Kwon, Y.-J., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Nakao, M., Nanut, T., Nath, K. J., Niiyama, M., Nishida, S., Nishimura, K., Ogawa, K., Ogawa, S., Okuno, S., Ono, H., Ostrowicz, W., Pakhlov, P., Pakhlova, G., Pal, B., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Prencipe, E., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Sandilya, S., Santelj, L., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Seon, O., Shebalin, V., Shibata, T.-A., Shiu, J.-G., Shwartz, B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tanida, K., Taniguchi, N., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Varner, G., Varvell, K. E., Vossen, A., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Watanabe, M., Widmann, E., Won, E., Ye, H., Yin, J. H., Yusa, Y., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Abstract: Seminar, ; Physical review / D 99(3), 032012 (2019). doi:10.1103/PhysRevD.99.032012, We report measurements of isospin asymmetry $\Delta_{0-}$ and difference of direct $CP$ asymmetries $\Delta A_{CP}$ between charged and neutral $B \to X_s \gamma$ decays. This analysis is based on the data sample containing $772 \times 10^6 B\bar{B}$ pairs that was collected with the Belle detector at the KEKB energy-asymmetric $e^+ e^-$ collider. Using a sum-of-exclusive technique with invariant $X_s$ mass up to 2.8~GeV/$c^2$, we obtain $\Delta_{0-} = \bigl[-0.48 \pm 1.49 {\rm (stat.)} \pm 0.97 {\rm (syst.)} \pm 1.15 {(f_{+-}/f_{00})}\bigr]$\% and $\Delta A_{CP} = \bigl[+3.69 \pm 2.65 {\rm (stat.)} \pm 0.76{\rm (syst.)}\bigr]$\%, where the last uncertainty for $\Delta_{0-}$ is due to the uncertainty on the production ratio of $B^+B^-$ to $B^0\bar{B}^0$ in $\Upsilon(4S)$ decays. The measured value of $\Delta_{0-}$ is consistent with zero, allowing us to constrain the resolved photon contribution in the $B \to X_s \gamma$, and improve the branching fraction prediction. The result for $\Delta A_{CP}$ is consistent with the prediction of the SM. We also measure the direct $CP$ asymmetries for charged and neutral $B \to X_s \gamma$ decays. All the measurements are the most precise to date., Published by APS, College Park, MD
Published: 2019
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30. Observation of $ \tau^- \rightarrow \pi^- \nu_{\tau} e^+ e^- $ and search for $\tau^- \rightarrow \pi^- \nu_{\tau} \mu^+ \mu^-$

Author: Jin, Y., Aihara, H., Epifanov, D., Adachi, I., Al Said, S., 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., Garmash, A., 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., Li Gioi, L., 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., Purohit, M. V., 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: phase space, KEK-B, current: axial-vector, efficiency, 5/3, mediation, BELLE, tau: decay, branching ratio, 4/3, statistical
Abstract: Observation of $ \tau^- \rightarrow \pi^- \nu_{\tau} e^+ e^- $ and search for $\tau^- \rightarrow \pi^- \nu_{\tau} \mu^+ \mu^-$We present the first measurements of branching fractions of rare tau-lepton decays, τ−→π−ντℓ+ℓ− (ℓ=e or μ), 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 τ−→π−ντe+e− decay is observed for the first time with 7.0σ 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 Mπee>1.05 GeV/c2 is measured to be B(τ−→π−ντe+e−)[Mπ−e+e−>1.05 GeV/c2]=(5.90±0.53±0.85±0.11)×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 BA(τ−→π−ντe+e−)=(1.46±0.13±0.21)×10−5 to BV(τ−→π−ντe+e−)=(3.01±0.27±0.43)×10−5, respectively. An upper limit is set on the branching fraction of the τ−→π−ντμ+μ− decay, B(τ−→π−ντμ+μ−)
Published: 2019
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31. Observation of Transverse $\mathrm{{\Lambda}}/\bar{\mathrm{{\Lambda}}}$ Hyperon Polarization in ${e}^{+}{e}^{{-}}$ Annihilation at Belle

Author: Guan, Y., Vossen, A., Aushev, T., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Ayad, R., Matsuda, T., Matvienko, D., Merola, M., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mussa, R., Nakao, M., Babu, V., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Ono, H., Badhrees, I., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Bakich, A. M., Prencipe, E., Rabusov, A., Rostomyan, A., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Bansal, V., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seidl, R., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Behera, P., Shen, C. P., Shibata, T.-A., Shiu, J.-G., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Beleño, C., Sutcliffe, W., Suzuki, K., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Berger, M., Urquijo, P., Usov, Y., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Waheed, E., Wang, B., Bhardwaj, V., Wang, C. H., Wang, M.-Z., Wang, P., Wang, X. L., Watanuki, S., Widmann, E., Won, E., Ye, H., Yelton, J., Yin, J. H., Adachi, I., Bhuyan, B., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., Zupanc, A., Belle Collaboration, Bilka, T., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Cao, L., Červenkov, D., Adamczyk, K., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S.-K., Choi, Y., Cinabro, D., Cunliffe, S., Ahn, J. K., Dash, N., Di Carlo, S., Dingfelder, J., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Aihara, H., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Golob, B., Guido, E., Al Said, S., Haba, J., Hayasaka, K., Hayashii, H., Hirose, S., Hou, W.-S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Asner, D. M., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Atmacan, H., Kang, K. H., Kawasaki, T., Kiesling, C., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., Kodyš, P., Aulchenko, V., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kuzmin, A., Kwon, Y.-J., and Lange, J. S.
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment, ddc:530, Nuclear Experiment
Abstract: Physical review letters 122(4), 042001 (2019). doi:10.1103/PhysRevLett.122.042001, We report the first observation of the spontaneous polarization of $Λ$ and $\bar{Λ}$ hyperons transverse to the production plane in $e^+ e^−$ annihilation, which is attributed to the effect arising from a polarizing fragmentation function. For inclusive $Λ/\bar{Λ}$ production, we also report results with subtracted feed-down contributions from $Σ^0$ and charm. 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. We observe a significant polarization that rises with the fractional energy carried by the$Λ/\bar{Λ}$ hyperon., Published by Published by the American Physical Society, College Park, Md.
Published: 2019
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32. Search for $\Omega(2012)\to K\Xi(1530) \to K\pi\Xi$ at Belle

Author: Jia, S., Shen, C. P., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Bakich, A. M., Behera, P., 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., Li Gioi, L., 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.
Abstract: Physical review / D 100(3), 032006 (2019). doi:10.1103/PhysRevD.100.032006, 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., Published by APS, College Park, MD
Published: 2019
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33. First measurements of absolute branching fractions of the $Ξ _c ^+$ baryon at Belle

Author: Li, Y. B., Shen, C. P., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, Varghese, Bakich, A. M., Ban, Y., Bansal, V., Behera, P., Bele, 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., Li Gioi, L., 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.
Abstract: Physical review / D 100(3), 031101 (2019). doi:10.1103/PhysRevD.100.031101, We present the first measurements of the absolute branching fractions of $\Xi_c^+$ decays into $\Xi^- \pi^+ \pi^+$, $p K^- \pi^+$, and $p \bar{K}^{*}(892)^{0}$ 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 $\Xi_c^+$ signal 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 ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+)$, ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to p K^- \pi^+)$, and ${\cal B}(\bar{B}^{0} \to \bar{\Lambda}_c^- \Xi_c^+){\cal B}(\Xi_c^+ \to p \bar{K}^{*}(892)^{0})$. Dividing these product branching fractions by $\bar{B}^{0} \to \bar{\Lambda}_{c}^{-} \Xi_{c}^{+}$ yields: ${\cal B}(\Xi_c^+ \to \Xi^- \pi^+ \pi^+) = [2.86 \pm 1.21(\rm stat.) \pm 0.38(\rm syst.)]\%$, ${\cal B}(\Xi_c^+ \to p K^- \pi^+)=[0.45 \pm 0.21(\rm stat.) \pm 0.07(\rm syst.)]\%$, and ${\cal B}(\Xi_c^+ \to p \bar{K}^{*}(892)^{0}) = [0.25 \pm 0.16(\rm stat.) \pm 0.04(\rm syst.)]\%$. 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., Published by APS, College Park, MD
Published: 2019
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34. Evidence for the decay $B^0\to p\bar{p}\pi^0$

Author: 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., Li Gioi, L., 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: B0: hadronic decay, Upsilon(10570): electroproduction, B: pair production, B0: branching ratio: upper limit, Delta(1232): intermediate state, statistical analysis: Bayesian, BELLE, electron positron: colliding beams, electron positron: annihilation, decay modes, KEK-B, B0: branching ratio: measured, +p+anti-p+pi0%22">B0 --> p anti-p pi0, experimental results
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)
Published: 2019
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35. Observation of $\Upsilon(4S)\to \eta' \Upsilon(1S)$

Author: Guido, E., Mussa, R., Tamponi, U., Aihara, H., Al Said, S., 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., Li Gioi, L., 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, Hua, Yelton, J., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: Upsilon(10570): electroproduction, Upsilon(10570): hadronic decay, +rho%28770%290+photon%22">eta(958) --> rho(770)0 photon, +eta%28958%29+Upsilon%289460%29%22">Upsilon(10570) --> eta(958) Upsilon(9460), BELLE, electron positron: colliding beams, electron positron: annihilation, 4/3, Upsilon(10570): branching ratio: measured, eta(958): radiative decay, 10.57 GeV-cms, KEK-B, +2photon%22">eta --> 2photon, Upsilon(9460), +eta+pi%2B+pi%22">eta(958) --> eta pi+ pi, experimental results
Abstract: We report the first observation of the hadronic transition $ϒ(4S) → η′ϒ(1S)$, using 496 fb$^{-1}$ data collected at the $ϒ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct the $η′$ meson through its decays to $ρ^0 γ$ and to $π^+ π^-η$, with $η → γγ$. We measure $B(ϒ(4S) → η′ϒ(1S))=[3.43±0.88(stat)±0.21(syst)] × 10^{-5}$, with a significance of 5.7$σ$.
Published: 2018
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36. Observation of $\Upsilon(4S)\to \eta' \Upsilon(1S)$

Author: Guido, E., Mussa, R., Tamponi, U., Aihara, H., Al Said, S., 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., Li Gioi, L., 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, Hua, Yelton, J., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Abstract: Physical review letters 121(6), 062001 (2018). doi:10.1103/PhysRevLett.121.062001, We report the first observation of the hadronic transition $ϒ(4S) → η′ϒ(1S)$, using 496 fb$^{-1}$ data collected at the $ϒ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We reconstruct the $η′$ meson through its decays to $ρ^0 γ$ and to $π^+ π^-η$, with $η → γγ$. We measure $B(ϒ(4S) → η′ϒ(1S))=[3.43±0.88(stat)±0.21(syst)] × 10^{-5}$, with a significance of 5.7$σ$., Published by American Physical Society, College Park, Md.
Published: 2018
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37. Production cross sections of hyperons and charmed baryons from $e^+e^-$ annihilation near $\sqrt{s} = 10.52$~GeV

Author: Niiyama, M., Sumihama, M., Nakano, T., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Barberio, E., Berger, M., Bhardwaj, V., Bhuyan, B., Biswal, J., Bobrov, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chang, M.-C., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chistov, R., Cho, K., Choi, Y., Cinabro, D., Dash, N., Di Carlo, S., Doležal, Z., 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., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Karyan, G., Kato, Y., Katrenko, P., 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., Kotchetkov, D., Križan, P., Krokovny, P., Kulasiri, R., Kuzmin, A., Kwon, Y.-J., Lange, J. S., Lee, I. S., Li, C. H., Li, L., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., 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, H., Pedlar, T. K., Piilonen, L. E., Pulvermacher, C., Ritter, M., Sahoo, H., Sakai, Y., Sandilya, S., Santelj, L., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seidl, R., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T.-A., Shiu, J.-G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Sumiyoshi, T., Takizawa, M., Tanida, K., Tenchini, F., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Van Hulse, C., Varner, G., Vossen, A., Wang, C. H., Wang, M.-Z., Wang, P., Watanabe, Y., Widmann, E., Williams, K. M., Won, E., Yamashita, Y., Ye, Hua, Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhulanov, V., and Zupanc, A.
Subjects: charmed baryon: direct production, 10.52 GeV-cms, Lambda/c+, Upsilon(10570): electroproduction, BELLE, electron positron: colliding beams, hyperon: direct production, electron positron: annihilation, suppression, spin, Xi(1530), KEK-B, Sigma(1385), particle: heavy, diquark, slope, multiplicity, ground state, structure, channel cross section: measured, inclusive production, experimental results
Abstract: Physical review / D 97(7), 072005 (2018). doi:10.1103/PhysRevD.97.072005, We measure the inclusive production cross sections of hyperons and charmed baryons from $e^+e^-$ annihilation using a 800 fb$^{-1}$ data sample taken near the $ϒ(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The feed-down contributions from heavy particles are subtracted using our data, and the direct production cross sections are presented for the first time. The production cross sections divided by the number of spin states for $S=-1$ hyperons follow an exponential function with a single slope parameter except for the $Σ(1385)^+$ resonance. Suppression for $Σ(1385)^+$ and $Ξ(1530)^0$ hyperons is observed. Among the production cross sections of charmed baryons, a factor of 3 difference for $Λ_c^+$ states over $Σ_c$ states is observed. This observation suggests a diquark structure for these baryons., Published by APS, Woodbury, NY
Published: 2018
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38. Measurement of the branching fraction of $B → D ^{(*)} π ℓ ν$ at Belle using hadronic tagging in fully reconstructed events

Author: Vossen, A., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Badhrees, I., Bansal, V., Beleño, C., Bhuyan, B., Bilka, T., Biswal, J., Bondar, A., Bozek, A., Browder, T. E., Červenkov, D., 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., Goldenzweig, P., Guido, E., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hirose, S., Hou, W.-S., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jia, S., Jin, Y., Julius, T., Kim, D. Y., Kim, H. J., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K., 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 Gioi, L., Libby, J., Liventsev, D., Lubej, M., Masuda, M., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Moon, H. K., Mussa, R., Nakano, E., Nakao, M., Nanut, T., Nath, K. J., Nayak, M., Niiyama, M., Nishida, 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., Shebalin, V., Shen, C. P., Shibata, T.-A., Shimizu, N., Shiu, J.-G., Simon, F., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., 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 Hulse, C., Varner, G., Varvell, K. E., Vinokurova, A., Vorobyev, V., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Watanabe, M., Widmann, E., Won, E., Ye, Hua, Yusa, Y., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Subjects: High Energy Physics::Phenomenology, High Energy Physics::Experiment
Abstract: We report a measurement of the branching fraction of the decay $B \rightarrow D^{(*)}\pi \ell\nu$. The analysis uses 772$\times 10^6$ $B\bar{B}$ pairs produced in $e^+e^-\rightarrow \Upsilon(4S)$ data recorded by the Belle experiment at the KEKB asymmetric-energy $e^+e^-$ collider. The tagging $B$ meson in the decay is fully reconstructed in a hadronic decay mode. On the signal side, we reconstruct the decay $B \rightarrow D^{(*)}\pi \ell\nu$ $(\ell=e,\mu)$. The measured branching fractions are $\mathcal{B}(B^+ \rightarrow D^-\pi^+ \ell^+\nu)$ = [4.55 $\pm$ 0.27 (stat.) $\pm$ 0.39 (syst.)]$\times 10^{-3}$, $\mathcal{B}(B^0 \rightarrow \bar{D}^0\pi^- \ell^+\nu)$ = [4.05 $\pm$ 0.36 (stat.) $\pm$ 0.41 (syst.)]$\times 10^{-3}$, $\mathcal{B}(B^+ \rightarrow D^{*-}\pi^+ \ell^+\nu)$ = [6.03 $\pm$ 0.43 (stat.) $\pm$ 0.38 (syst.)]$\times 10^{-3}$, and $\mathcal{B}(B^0 \rightarrow \bar{D}^{*0}\pi^- \ell^+\nu)$ = [6.46 $\pm$ 0.53 (stat.) $\pm$ 0.52 (syst.)]$\times 10^{-3}$. These are in good agreement with the current world average values.
Published: 2018
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39. Observation of $\mathrm{\Upsilon(2S)\to\gamma \eta_{b}(1S)}$ decay

Author: Fulsom, B. G., Pedlar, T. K., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., 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., Dingfelder, J., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Guido, E., Haba, J., Hayasaka, K., Hayashii, H., Hirose, S., Hou, W.-S., Iijima, T., 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., Kawasaki, T., Kichimi, H., 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., Kuzmin, A., Kwon, Y.-J., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., 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., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Park, H., Paul, S., 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., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T.-A., Shiu, J.-G., Shwartz, B., Simon, F., Singh, J. B., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Vahsen, S. E., Van Hulse, C., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Wang, P., Wang, X. L., Watanabe, M., Watanuki, S., Widmann, E., Won, E., Ye, H., Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Subjects: eta/b: mass: measured, Upsilon(10020): branching ratio: measured, photon: spectrum, eta/b: electroproduction, BELLE, electron positron: colliding beams, electron positron: annihilation, KEK-B, Upsilon(10020): electroproduction, Upsilon(10020): radiative decay, statistical, +eta%2Fb+photon%22">Upsilon(10020) --> eta/b photon, experimental results
Abstract: Physical review letters 121, 232001 (2018). doi:10.1103/PhysRevLett.121.232001, We report the observation of $\mathrm{\Upsilon(2S)\to\gamma \eta_{b}(1S)}$ decay based on an analysis of the inclusive photon spectrum of 24.7 fb$^{-1}$ of e$^+$e$^-$ collisions at the ϒ(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e$^+$e$^-$ collider. We measure a branching fraction of $\mathcal{B}[ϒ(2S) \to\gamma \eta_{b}(1S)]=(6.1_{-0.7-0.6}^{+0.6+0.9}) × 10^{-4}$ and derive an $η_{b}(1S)$ mass of $9394.8_{-3.1-2.7}^{+2.7+4.5} MeV/c^2$, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode., Published by APS, College Park, Md.
Published: 2018
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40. Search for $C P$ violation in the $\mathrm{D ^+ → π^ + π^ 0}$ decay at Belle

Author: Babu, V., Trabelsi, K., Behera, P., Van Hulse, C., Varner, G., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Yuan, C. Z., Zakharov, S., Zhang, Z. P., Zhilich, V., Bhardwaj, V., Zhukova, V., Zupanc, A., Belle Collaboration, Biswal, J., Červenkov, D., Chen, A., Cheon, B. G., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Mohanty, G. B., Dash, N., Doležal, Z., Fast, J. E., Fulsom, B. G., Gaur, V., Garmash, A., Gelb, M., Guan, Y., Guido, E., Hayasaka, K., Aziz, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Julius, T., Kaliyar, A. B., Kawasaki, T., Kim, D. Y., Kim, J. B., Kim, K. T., Greenwald, D., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kuzmin, A., Asner, D. M., Kwon, Y.-J., Li, L. K., Li Gioi, L., Libby, J., Masuda, M., Matvienko, D., Merola, M., Nanut, T., Natkaniec, Z., Nayak, M., Atmacan, H., Nishida, S., Okuno, S., Pakhlov, P., Pakhlova, G., Pal, B., Paul, S., Piilonen, L. E., Popov, V., Prasanth, K., Resmi, P. K., Badhrees, I., Ritter, M., Russo, G., Sakai, Y., Sandilya, S., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A. J., Bahinipati, S., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T.-A., Shiu, J.-G., Shwartz, B., Simon, F., Sokolov, A., Bakich, A. M., Solovieva, E., Stanič, S., Starič, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uno, S., and Vahsen, S. E.
Subjects: High Energy Physics::Experiment, ddc:530
Abstract: Physical review / D 97(1), 011101 (2018). doi:10.1103/PhysRevD.97.011101, We search for CP violation in the charged charm meson decay $\mathrm{D ^+ → π^ + π^ 0}$, based on a data sample corresponding to an integrated luminosity of 921 fb$^{−1}$ collected by the Belle experiment at the KEKB $e^+ e^−$ asymmetric-energy collider. The measured CP-violating asymmetry is $[+2.31±1.24(stat)±0.23(syst)]%$, which is consistent with the standard model prediction and has a significantly improved precision compared to previous results., Published by American Physical Society, Woodbury, NY
Published: 2018
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41. Observation of $B^{+} \rightarrow p\bar{\Lambda} K^+ K^-$ and $B^{+} \rightarrow \bar{p}\Lambda K^+ K^+$

Author: Lu, P. C., Wang, M. Z., Chistov, R., Chang, P., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bakich, A. M., Bansal, V., Behera, P., Beleno, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., 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., 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., Hayasaka, K., Hayashii, H., Hirose, S., Hou, W. S., Hsu, C. L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Kaliyar, A. B., Kawasaki, T., Kichimi, H., 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., Kuzmin, A., Kwon, Y. J., Lai, Y. T., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., 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., Nisar, N. K., Nishida, S., Ogawa, S., Okuno, S., Ono, H., Ozaki, H., Pakhlov, P., 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., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. A., Shiu, J. G., Shwartz, B., Simon, F., Singh, J. B., 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 Hulse, C., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Watanabe, M., Watanuki, S., Widmann, E., Won, E., Ye, Hua, Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Subjects: Upsilon(10570): electroproduction, B: pair production, +p+Antilambda+K%2B+K%22">B+ --> p Antilambda K+ K, High Energy Physics::Phenomenology, B+: branching ratio: measured, BELLE, electron positron: colliding beams, electron positron: annihilation, 10.58 GeV-cms, decay modes, +anti-p+Lambda+K%2B+K%22">B+ --> anti-p Lambda K+ K, final state: (0charm), KEK-B, B+: hadronic decay, High Energy Physics::Experiment, Phi(1020): intermediate state, Astrophysics::Galaxy Astrophysics, eta(958): intermediate state, experimental results
Abstract: We report the study of $B^{+} \rightarrow p\bar{\Lambda} K^+ K^-$ and $B^{+} \rightarrow \bar{p}\Lambda K^+ K^+$ using a $772 \times 10^6$ $B\bar{B}$ pair data sample recorded on the $\Upsilon({\rm 4S})$ resonance with the Belle detector at KEKB. These include the observations of decay modes with the corresponding branching fractions $\mathcal{B}$($B^{+} \rightarrow p\bar{\Lambda} K^+ K^-$ ) $=$ $(4.22^{+0.45}_{-0.44}\pm 0.51)\times10^{-6}$, $\mathcal{B}$($B^{+} \rightarrow \bar{p}\Lambda K^+ K^+$) $=$ $(3.81^{+0.39}_{-0.37} \pm 0.45)\times 10^{-6}$, $\mathcal{B}$($\eta_c \rightarrow p \bar{\Lambda} K^-$) $=$ $(2.9^{+0.4}_{-0.3}\pm 0.4)\times10^{-3}$ and $\mathcal{B}$($B^{+} \rightarrow p\bar{\Lambda} \phi$) $=$ $(0.818 \pm 0.215 \pm 0.078)\times10^{-6}$, where $\mathcal{B}$ denotes the decay branching fraction and the intermediate resonance decays are excluded in the four-body decay measurements.
Published: 2018
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42. Measurement of the Decays $\Lambda_c\to \Sigma\pi\pi$ at Belle

Author: Berger, M., Schwanda, C., Suzuki, K., Adachi, I., Ahn, J. 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., Behera, P., Bhardwaj, V., Bhuyan, B., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Červenkov, D., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, Y., Cinabro, D., Czank, T., Dash, N., Di Carlo, S., Doležal, Z., Dutta, D., 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., Guan, Y., 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., Jaegle, I., Jia, S., Jin, Y., Joo, K. K., Julius, T., Kaliyar, A. B., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., 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., Kuzmin, A., Kwon, Y. -J., Lee, I. S., Lee, S. C., Li, L. K., Li, Y., Gioi, L. Li, Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mussa, R., Nakano, T., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Okuno, S., Ono, H., Onuki, Y., Pakhlov, P., Pakhlova, G., Pal, B., Park, H., Paul, S., Pavelkin, I., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Ritter, M., Rostomyan, A., Russo, G., Sakai, Y., Salehi, M., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwartz, A. J., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T. -A., Shimizu, N., Shiu, J. -G., Shwartz, B., 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., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Hulse, C., Varner, G., Varvell, K. E., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Widmann, E., Won, E., Ye, Hua, Yelton, J., Yuan, C. Z., Yusa, Y., Zakharov, S., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Abstract: We report measurements of the branching fractions of the decays $\Lambda^+_c\to\Sigma^+\pi^-\pi^+$, $\Lambda^+_c\to\Sigma^0\pi^+\pi^0$ and $\Lambda^+_c\to\Sigma^+\pi^0\pi^0$ relative to the reference channel $\Lambda^+_c\to pK^-\pi^+$. The analysis is based on the full data sample collected at and close to $\Upsilon(4S)$ resonance by the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider corresponding to the integrated luminosity of 711 fb$^{-1}$. We measure ${\cal B}(\Lambda^+_c\rightarrow\Sigma^+\pi^-\pi^+)/{\cal B}(\Lambda^+_c\to pK^-\pi^+) = 0.706~\pm 0.003~\pm 0.029$, ${\cal B}(\Lambda^+_c\rightarrow\Sigma^0\pi^+\pi^0)/{\cal B}(\Lambda^+_c\to pK^-\pi^+) = 0.491~\pm 0.005~\pm 0.028$ and ${\cal B}(\Lambda^+_c\rightarrow\Sigma^+\pi^0\pi^0)/{\cal B}(\Lambda^+_c\to pK^-\pi^+) = 0.198~\pm 0.006~\pm 0.016$. The listed uncertainties are statistical and systematic, respectively.
Published: 2018
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43. Search for $CP$ violation with Kinematic Asymmetries in the $D^{0}\rightarrow K^{+}K^{-}\pi^{+}\pi^{-}$ Decay

Author: Kim, J. B., Won, E., Adachi, I., Aihara, H., Al Said, S., 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., Li Gioi, L., 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::Phenomenology, partial wave, interference, BELLE, electron positron: colliding beams, electron positron: annihilation, D0: hadronic decay, asymmetry: CP, KEK-B, K: pair production, kinematics, CP: violation, High Energy Physics::Experiment, +K%2B+K-+pi%2B+pi%22">D0 --> K+ K- pi+ pi, D0: rare decay, pi: pair production, pseudoscalar, experimental results
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.
Published: 2018
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44. Search for the Lepton-Flavor-Violating Decay $B^{0}\to K^{\ast 0} \mu^{\pm} e^{\mp}$

Author: Sandilya, S., Trabelsi, K., Schwartz, A. J., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bansal, V., Behera, P., Beleño, C., Bhardwaj, V., 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., Dingfelder, J., 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., Greenwald, D., Guan, Y., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hirose, S., Hou, W.-S., Hsu, C.-L., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joffe, D., Joo, K. K., Julius, T., Kaliyar, A. B., Kang, K. H., 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., Kuhr, T., Kulasiri, R., Kumar, R., Kuzmin, A., Kwon, Y.-J., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Masuda, M., Matsuda, T., 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., Natkaniec, Z., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Pakhlov, P., Pakhlova, G., Pal, B., Pardi, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prasanth, K., Prencipe, E., Purohit, M. V., Rabusov, A., Resmi, P. K., Rostomyan, A., Russo, G., Sahoo, D., Sakai, Y., Salehi, M., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Seon, O., Sevior, M. E., Shen, C. P., Shibata, T.-A., Shiu, J.-G., Shwartz, B., Singh, J. B., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Ushiroda, Y., Usov, Y., Van Hulse, C., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Waheed, E., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Wang, X. L., Watanuki, S., Wehle, S., Widmann, E., Won, E., Yamamoto, H., Ye, H., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Subjects: Upsilon(10570): electroproduction, KEK-B, B: pair production, +K*%28892%290+muon-+positron%22">B0 --> K*(892)0 muon- positron, B0: branching ratio: upper limit, +K*%28892%290+muon%2B+electron%29%22">B0 --> K*(892)0 muon+ electron), BELLE, electron positron: colliding beams, electron positron: annihilation, B0: semileptonic decay, 10.58 GeV-cms, experimental results
Abstract: We have searched for the lepton-flavor-violating decay $B^{0}\to K^{\ast 0} \mu^{\pm} e^{\mp}$ using a data sample of 711~\invfb that contains $772 \times 10^{6}$ $B\bar{B}$ pairs. The data were collected near the \Y4S resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. No signals were observed, and we set 90\% confidence level upper limits on the branching fractions of ${\cal B}(B^{0}\to K^{\ast 0} \mu^{+} e^{-})< 1.2\times 10^{-7}$, ${\cal B}(B^{0}\to K^{\ast 0} \mu^{-} e^{+})< 1.6\times 10^{-7}$, and, for both decays combined, ${\cal B}(B^{0}\to K^{\ast 0} \mu^{\pm} e^{\mp}) < 1.8\times 10^{-7}$. These are the most stringent limits on these decays to date.
Published: 2018
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45. First Evidence for $\mathrm{cos}2{\beta}>0$ and Resolution of the Cabibbo-Kobayashi-Maskawa Quark-Mixing Unitarity Triangle Ambiguity

Author: 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., Li Gioi, L., 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., Le Diberder, F., 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., Panduro Vazquez, W., 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., Al Said, S., 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, Hua, Yuan, C. Z., Yusa, Y., Zakharov, S., Zallo, A., Zani, L., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Zupanc, A.
Abstract: Physical review letters 121(26), 261801 (2018). doi:10.1103/PhysRevLett.121.261801, 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., Published by APS, College Park, Md.
Published: 2018
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46. Evidence of charged $\Xi_{c}(2930)$ and updated measurement of $B^{0} \to K^{0} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}$ at Belle

Author: Li, Y. B., Shen, C. P., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Ban, Y., Bansal, V., Behera, P., Beleño, C., Bhardwaj, V., Bhuyan, B., 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., Dingfelder, J., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Golob, B., Haba, J., Hayasaka, K., Hirose, S., Hou, W.-S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jaegle, I., Jeon, H. B., Jia, S., Jin, Y., Joo, K. K., Kaliyar, A. B., Kang, K. H., Kato, Y., Kawasaki, T., 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., Kwon, Y.-J., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li Gioi, L., Libby, J., Liventsev, D., Luo, T., Matvienko, D., Merola, M., Miyata, H., Mizuk, R., Moon, H. K., Mori, T., Mussa, R., Nakano, E., Nanut, T., Nath, K. J., Natkaniec, Z., Nayak, M., Nisar, N. K., Nishida, S., Nishimura, K., Ogawa, K., 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., Prencipe, E., 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., Shibata, T.-A., Shiu, J.-G., 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., Usov, Y., Van Hulse, C., Van Tonder, R., Varner, G., Varvell, K. E., Vorobyev, V., Waheed, E., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Wang, X. L., Watanuki, S., Widmann, E., Won, E., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: Upsilon(10570): electroproduction, B: pair production, branching ratio: upper limit, BELLE, electron positron: colliding beams, electron positron: annihilation, electron positron: energy, Xi/c(2930): mass: measured, spin, Xi/c(2930): branching ratio, mass spectrum: (Lambda/c+ Antilambda/c+), baryon, mass: width, KEK-B, B0: branching ratio: measured, +K0%28S%29+Lambda%2Fc%2B+Antilambda%2Fc%2B%22">B0 --> K0(S) Lambda/c+ Antilambda/c+, Xi/c(2930): electroproduction, +K0%28S%29+Lambda%2Fc%2B%22">Xi/c(2930) --> K0(S) Lambda/c+, High Energy Physics::Experiment, Xi/c(2930): hadronic decay, structure, Nuclear Experiment, energy: asymmetry, Y(4660): branching ratio, experimental results
Abstract: We report evidence for the charged charmed-strange baryon $\Xi_{c}(2930)$ with a signal significance of 3.9$\sigma$. The charged $\Xi_{c}(2930)$ is found in its decay to $K_{S}^{0} \Lambda_{c}$ in the substructure of $B^{0} \to K^{0}_{S} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}$ decays. The measured mass and width are $[2942.3 \pm 4.4 (\rm stat.) \pm 1.6(\rm syst.)]$~MeV/$c^{2}$ and $[14.8 \pm 8.8(\rm stat.) \pm 7.1(\rm syst.)]$~MeV, respectively, and the product branching fraction is ${\cal B}(B^{0} \to \Xi_{c}^{+}(2930) \bar{\Lambda}_{c}^{-}) {\cal B}(\Xi_{c}^{+}(2930)\to K^{0} \Lambda_{c}^{+})=[2.28 \pm 0.49(\rm stat.) \pm 0.29(\rm syst.)]\times 10^{-4}$. We also measure ${\cal B}(B^{0} \to K^{0} \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-}) = [3.84 \pm 0.73(\rm stat.) \pm 0.48(\rm syst.)] \times 10^{-4}$ with greater precision than previous experiments, and present the results of a 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 $Y(4660)$ or $Y_{\eta}$ 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.
Published: 2018
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47. 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: 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., Li Gioi, L., 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\TAGbel And, 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., Le Diberder, F., 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\TAGbbr, A., Lutz, A. M., MacFarlane, D. B., MacNaughton, J., Mallik, U., Manoni\TAGbbr And, 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\TAGbel, M., Miyabayashi, K., Miyashita, T. S., Miyata, H., Mizuk, R., Mohanty, G. B., Mori, T., Muller, D. R., Müller, T., Mussa\TAGbel And, 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., Panduro Vazquez, W., Paoloni, E., Pardi\TAGbel And, 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\TAGbbr And, A., Rotondo, M., Rozanska, M., Russo\TAGbel And, G., Sacco, R., Al Said, S., 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\TAGbel And, 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: B0: hadronic decay, Upsilon(10570): electroproduction, B: pair production, Dalitz plot, D: hadronic decay, BELLE, amplitude analysis, electron positron: colliding beams, electron positron: annihilation, SLAC PEP Stor, B-factory, asymmetry: CP, +D+eta%22">B0 --> D eta, 10.57 GeV-cms, KEK-B, BaBar, CP: violation, time dependence, +D+omega%28783%29%22">B0 --> D omega(783), +D+pi0%22">B0 --> D pi0, CKM matrix: unitarity, +K0%28S%29+pi%2B+pi%22">D --> K0(S) pi+ pi, experimental results
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.
Published: 2018
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48. First measurements of absolute branching fractions of $\Xi_c^0$ at Belle

Author: Li, Y. B., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Aushev, T., Ayad, R., Badhrees, I., Ban, Y., 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., Li, L. K., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., MacNaughton, J., Masuda, M., Matsuda, T., Merola, M., Miyabayashi, K., 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: Upsilon(10570), KEK-B, branching ratio: measured, BELLE, missing-mass
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 ${\cal B}(B^- \to \bar{\Lambda}_c^- \Xi_c^0) = [9.51 \pm 2.10(\rm stat.) \pm 0.88(\rm syst.)] \times 10^{-4}$. 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: ${\cal B}(\Xi_c^0 \to \Xi^- \pi^+)= [1.80 \pm 0.50(\rm stat.) \pm 0.14(\rm syst.)]\%$, ${\cal B}(\Xi_c^0 \to \Lambda K^- \pi^+)=[1.17 \pm 0.37(\rm stat.) \pm 0.09(\rm syst.)]\%$, and ${\cal B}(\Xi_c^0 \to p K^- K^- \pi^+)=[0.58 \pm 0.23(\rm stat.) \pm 0.05(\rm syst.)]\%$. 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.
Published: 2018
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49. 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: Jia, S., Wang, X. L., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bansal, V., Behera, P., Beleño, 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., Li Gioi, L., 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., Olsen, S. L., 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: Born approximation, exclusive reaction, BES, +photon+chi%2Fc2%283555%29%22">electron positron --> photon chi/c2(3555), photon: spectrum, BELLE, electron positron: colliding beams, electron positron: annihilation, +photon+chi%2Fc1%283510%29%22">electron positron --> photon chi/c1(3510), 10.58 GeV-cms, channel cross section: upper limit, chi/c1(3510), energy dependence, chi/c2(3555), KEK-B, +photon+chi%2Fc0%283415%29%22">electron positron --> photon chi/c0(3415), tree approximation, chi/c0(3415), channel cross section: measured, experimental results
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.
Published: 2018
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50. Observation of $\Xi(1620)^0$ and evidence for $\Xi(1690)^0$ in $\Xi_c^+ \rightarrow \Xi^-\pi^+\pi^+$ decays

Author: Sumihama, M., Adachi, I., Ahn, J. K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Badhrees, I., Bahinipati, S., Bakich, A. M., Bansal, V., Beleño, C., Berger, M., Bhardwaj, V., Bhuyan, B., Bilka, T., 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., Choudhury, S., Cinabro, D., Cunliffe, S., Czank, T., Dash, N., Di Carlo, S., Doležal, Z., Dong, T. V., Drásal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Gelb, M., Giri, A., Goldenzweig, P., Guido, E., Haba, J., Hayasaka, K., Hayashii, H., Hirose, S., 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., Joo, K. K., Julius, T., Kaliyar, A. B., Kang, K. H., Karyan, G., Kato, Y., 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., Kumar, R., Kuzmin, A., Kwon, Y.-J., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moon, H. K., Mori, T., Mussa, R., Nakano, E., Nakano, T., Nakao, M., Nanut, T., Nath, K. J., Natkaniec, Z., Niiyama, M., Nisar, N. K., Nishida, 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., Russo, G., Sahoo, D., Sandilya, S., Santelj, L., Sanuki, T., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shen, C. P., Shibata, T.-A., Shiu, J.-G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Strube, J. F., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tanida, K., Taniguchi, N., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Urquijo, P., Vahsen, S. E., Van Hulse, C., Varner, G., Vorobyev, V., Vossen, A., Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Wang, X. L., Watanabe, M., Watanuki, S., 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: Xi(1630): hadronic decay, Xi/c+: hadronic decay, BELLE, electron positron: colliding beams, electron positron: annihilation, Xi(1690), hyperon, baryon, mass: width, Xi(1630): width, strangeness, KEK-B, mass spectrum: (Xi- pi), +Xi-+pi%2B%22">Xi(1630) --> Xi- pi+, High Energy Physics::Experiment, structure, +Xi-+2pi%2B%22">Xi/c+ --> Xi- 2pi+, Xi(1630): mass: measured, Nuclear Experiment, experimental results
Abstract: We report the first observation of the doubly-strange baryon $\Xi(1620)^0$ in its decay to $\Xi^-\pi^+$ via $\Xi_c^+ \rightarrow \Xi^- \pi^+ \pi^+$ decays based on a $980\,{\rm fb}^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The mass and width are measured to be 1610.4 $\pm$ 6.0 (stat) $^{+5.9}_{-3.5}$ (syst)~MeV$/c^2$ and 59.9 $\pm$ 4.8 (stat) $^{+2.8}_{-3.0}$ (syst)~MeV, respectively. We obtain 4.0$\sigma$ evidence of the $\Xi(1690)^0$ with the same data sample. These results shed light on the structure of hyperon resonances with strangeness $S=-2$.
Published: 2018
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