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1. Search for charmed baryons in the $\Lambda_c^+\eta$ system and measurement of the branching fractions of $\Lambda_c(2880)^+$ and $\Lambda_c(2940)^+$ decaying to $\Lambda_c^+\eta$ and $pD^0$ relative to $\Sigma_c(2455)\pi$

Author: Belle Collaboration, Li, S. X., Shen, C. P., Adachi, I., Ahn, J. K., Aihara, H., Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Banerjee, Sw., Belous, K., Bennett, J., Bessner, M., Bilka, T., Biswas, D., Bodrov, D., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Chang, M. -C., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Dash, N., De Nardo, G., De Pietro, G., Dhamija, R., Dingfelder, J., Doležal, Z., Dong, T. V., Dubey, S., Ecker, P., Ferber, T., Fulsom, B. G., Gaur, V., Garmash, A., Goldenzweig, P., Graziani, E., Grube, B., Guan, Y., Gudkova, K., Hadjivasiliou, C., Hsu, C. -L., Ipsita, N., Itoh, R., Iwasaki, M., Jacobs, W. W., Ji, Q. P., Jia, S., Jin, Y., Joo, K. K., Kiesling, C., Kim, D. Y., Kim, Y. J., Kinoshita, K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kuhr, T., Kumar, R., Kumara, K., Kwon, Y. -J., Li, L. K., Li, Y., Li, Y. B., Liventsev, D., Masuda, M., Maurya, S. K., Meier, F., Merola, M., Miyabayashi, K., Mizuk, R., Mussa, R., Nakano, T., Nakao, M., Natochii, A., Nayak, M., Nishida, S., Pakhlov, P., Pakhlova, G., Pardi, S., Park, J., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Russo, G., Sandilya, S., Savinov, V., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Shiu, J. -G., Solovieva, E., Starič, M., Sumihama, M., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Wang, E., Won, E., Yabsley, B. D., Yan, W., Yelton, J., Yin, J. H., Yuan, L., and Zhilich, V.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: We search for excited charmed baryons in the $\Lambda_c^+\eta$ system using a data sample corresponding to an integrated luminosity of 980 $\rm fb^{-1}$. The data were collected by the Belle detector at the KEKB $e^{+}$$e^{-}$ asymmetric-energy collider. No significant signals are found in the $\Lambda_c^+\eta$ mass spectrum, including the known $\Lambda_c(2880)^+$ and $\Lambda_c(2940)^+$. Clear $\Lambda_c(2880)^+$ and $\Lambda_c(2940)^+$ signals are observed in the $pD^0$ mass spectrum. We set upper limits at 90\% credibility level on ratios of branching fractions of $\Lambda_c(2880)^+$ and $\Lambda_c(2940)^+$ decaying to $\Lambda_c^+\eta$ relative to $\Sigma_c(2455)\pi$ of $<0.13$ for the $\Lambda_c(2880)^+$ and $<1.11$ for the $\Lambda_c(2940)^+$. We measure ratios of branching fractions of $\Lambda_c(2880)^+$ and $\Lambda_c(2940)^+$ decaying to $pD^0$ relative to $\Sigma_c(2455)\pi$ of $0.75 \pm 0.03(\text{stat.}) \pm 0.07(\text{syst.})$ for the $\Lambda_c(2880)^+$ and $3.59 \pm 0.21(\text{stat.}) \pm 0.56(\text{syst.})$ for the $\Lambda_c(2940)^+$., Comment: 10 pages, 4 figures, accepted for publication as a Regular Article in Physical Review D
Published: 2024

2. Evaluation of the performance of the event reconstruction algorithms in the JSNS$^2$ experiment using a $^{252}$Cf calibration source

Author: Lee, D. H., Cheoun, M. K., Choi, J. H., Choi, J. Y., Dodo, T., Goh, J., Haga, K., Harada, M., Hasegawa, S., Hwang, W., Iida, T., Jang, H. I., Jang, J. S., Joo, K. K., Jung, D. E., Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B, Kim, W., Kinoshita, H., Konno, T., Lim, I. T., Little, C., Marzec, E., Maruyama, T., Masuda, S., Meigo, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Pac, M. Y., Park, H. W., Park, J. S., Park, R. G., Peeters, S. J. M., Rott, C., Sakai, K., Sakamoto, S., Shima, T., Spitz, J., Suekane, F., Sugaya, Y., Suzuya, K., Takeuchi, Y., Yamaguchi, Y., Yeh, M., Yeo, I. S., Yoo, C., and Yu, I.
Subjects: High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract: JSNS$^2$ searches for short baseline neutrino oscillations with a baseline of 24~meters and a target of 17~tonnes of the Gd-loaded liquid scintillator. The correct algorithm on the event reconstruction of events, which determines the position and energy of neutrino interactions in the detector, are essential for the physics analysis of the data from the experiment. Therefore, the performance of the event reconstruction is carefully checked with calibrations using $^{252}$Cf source. This manuscript describes the methodology and the performance of the event reconstruction.
Published: 2024

3. Pulse Shape Discrimination in JSNS$^2$

Author: Dodo, T., Cheoun, M. K., Choi, J. H., Choi, J. Y., Goh, J., Haga, K., Harada, M., Hasegawa, S., Hwang, W., Iida, T., Jang, H. I., Jang, J. S., Joo, K. K., Jung, D. E., Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B., Kim, W., Kinoshita, H., Konno, T., Lee, D. H., Lim, I. T., Little, C., Marzec, E., Maruyama, T., Masuda, S., Meigo, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Pac, M. Y., Park, H. W., Park, J. S., Park, R. G., Peeters, S. J. M., Rott, C., Sakai, K., Sakamoto, S., Shima, T., Shin, C. D., Spitz, J., Suekane, F., Sugaya, Y., Suzuya, K., Takeuchi, Y., Yamaguchi, Y., Yeh, M., Yeo, I. S., Yoo, C., and Yu, I.
Subjects: Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract: JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\bar{\nu}_{\mu} \rightarrow \bar{\nu}_e$ appearance oscillations using neutrinos with muon decay-at-rest. For this search, rejecting cosmic-ray-induced neutron events by Pulse Shape Discrimination (PSD) is essential because the JSNS$^2$ detector is located above ground, on the third floor of the building. We have achieved 95$\%$ rejection of neutron events while keeping 90$\%$ of signal, electron-like events using a data driven likelihood method., Comment: arXiv admin note: text overlap with arXiv:2111.07482, arXiv:2308.02722
Published: 2024

4. Search for a pentaquark state decaying into $pJ/\psi$ in $\Upsilon(1,2S)$ inclusive decays at Belle

Author: Belle Collaboration, Dong, X., Zhang, H. Y., Wang, X. L., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Ayad, R., Bahinipati, S., Banerjee, Sw., Bessner, M., Bhardwaj, V., Biswas, D., Bodrov, D., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chang, P., Cheon, B. G., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Das, S., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Ecker, P., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Giri, A., Goldenzweig, P., Graziani, E., Gu, T., Guan, Y., Gudkova, K., Hadjivasiliou, C., Hayashii, H., Hazra, S., Hedges, M. T., Hou, W. -S., Hsu, C. -L., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jia, S., Jin, Y., Kalita, D., Kawasaki, T., Kim, D. Y., Kim, K. -H., Kim, Y. J., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kuhr, T., Kumar, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lai, Y. -T., Lam, T., Lange, J. S., Levit, D., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Liventsev, D., Ma, Y., Masuda, M., Matsuda, T., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mussa, R., Nakamura, I., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nishida, S., Ogawa, S., Ono, H., Pakhlova, G., Pardi, S., Park, H., Park, J., Park, S. -H., Passeri, A., Patra, S., Paul, S., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Russo, G., Sandilya, S., Savinov, V., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shan, W., Sharma, C., Shiu, J. -G., Singh, J. B., Solovieva, E., Starič, M., Takizawa, M., Tanida, K., Tenchini, F., Tiwary, R., Uchida, M., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Vinokurova, A., Watanuki, S., Won, E., Yabsley, B. D., Yan, W., Yang, S. B., Yelton, J., Yin, J. H., Yook, Y., Yuan, C. Z., Yuan, L., Yusa, Y., Zhang, Z. P., and Zhilich, V.
Subjects: High Energy Physics - Experiment
Abstract: Using the data samples of 102 million $\Upsilon(1S)$ and 158 million $\Upsilon(2S)$ events collected by the Belle detector, we search for a pentaquark state in the $pJ/\psi$ final state from $\Upsilon(1,2S)$ inclusive decays. Here, the charge-conjugate $\bar{p}J/\psi$ is included. We observe clear $pJ/\psi$ production in $\Upsilon(1,2S)$ decays and measure the branching fractions to be $\mathcal{B}[\Upsilon(1S) \to pJ/\psi + anything] = [4.27 \pm 0.16(stat.) \pm 0.20(syst.)] \times 10^{-5}$ and $\mathcal{B}[\Upsilon(2S) \to pJ/\psi + anything] = [3.59 \pm 0.14(stat.) \pm 0.16(syst.)] \times 10^{-5}$. We also measure the cross section of inclusive $pJ/\psi$ production in $e^+e^-$ annihilation to be $\sigma(e^+e^- \to pJ/\psi + anything) = [57.5 \pm 2.1 (stat.) \pm 2.5(syst.)]$~fb at $\sqrt{s} = 10.52~\hbox{GeV}$ using an 89.5~fb$^{-1}$ continuum data sample. There is no significant $P_c(4312)^+$, $P_c(4440)^+$ or $P_c(4457)^+$ signal found in the $pJ/\psi$ final states in $\Upsilon(1,2S)$ inclusive decays. We determine the upper limits of $\mathcal{B}[\Upsilon(1,2S)\to P_c^{+} + anything] \cdot \mathcal{B}(P_c^{+}\to pJ/\psi)$ to be at the $10^{-6}$ level.
Published: 2024

5. The acrylic vessel for JSNS$^{2}$-II neutrino target

Author: Shin, C. D., Ajimura, S., Cheoun, M. K., Choi, J. H., Choi, J. Y., Dodo, T., Goh, J., Haga, K., Harada, M., Hasegawa, S., Hiraiwa, T., Hwang, W., Iida, T., Jang, H. I., Jang, J. S., Jeon, H., Jeon, S., Joo, K. K., Jung, D. E., Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B., Kim, W., Kinoshita, H., Konno, T., Lee, D. H., Lim, I. T., Little, C., Marzec, E., Maruyama, T., Masuda, S., Meigo, S., Monjushiro, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Pac, M. Y., Park, H. W., Park, J. S., Park, R. G., Peeters, S. J. M., Rott, C., Sakai, K., Sakamoto, S., Shima, T., Spitz, J., Suekane, F., Sugaya, Y., Suzuya, K., Taira, M., Takeuchi, Y., Yamaguchi, Y., Yeh, M., Yeo, I. S., Yoo, C., and Yu, I.
Subjects: High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract: The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment designed for the search for sterile neutrinos. The experiment is currently at the stage of the second phase named JSNS$^{2}$-II with two detectors at near and far locations from the neutrino source. One of the key components of the experiment is an acrylic vessel, that is used for the target volume for the detection of the anti-neutrinos. The specifications, design, and measured properties of the acrylic vessel are described.
Published: 2023
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6. Measurement of branching-fraction ratios and $CP$ asymmetries in $B^{\pm} \to D_{CP\pm}K^{\pm}$ decays at Belle and Belle II

Author: Belle, The, Collaborations, Belle II, Adachi, I., Aggarwal, L., Aihara, H., Akopov, N., Aloisio, A., Ky, N. Anh, Asner, D. M., Atmacan, H., Aushev, T., Aushev, V., Aversano, M., Ayad, R., Babu, V., Bae, H., Bahinipati, S., Bambade, P., Banerjee, Sw., Barrett, M., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Becherer, F., Becker, J., Behera, P. K., Belous, K., Bennett, J. V., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhuyan, B., Bianchi, F., Bilka, T., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Borah, J., Bozek, A., Bračko, M., Branchini, P., Briere, R. A., Browder, T. E., Budano, A., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Cerasoli, J., Chang, M. -C., Chang, P., Cheema, P., Chekelian, V., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cochran, J., Corona, L., Cremaldi, L. M., Czank, T., Das, S., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Dingfelder, J., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Dujany, G., Ecker, P., Eliachevitch, M., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fodor, A., Forti, F., Frey, A., Fulsom, B. G., Gabrielli, A., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaudino, G., Gaur, V., Gaz, A., Gellrich, A., Ghevondyan, G., Ghosh, D., Ghumaryan, H., Giakoustidis, G., Giordano, R., Giri, A., Gobbo, B., Godang, R., Gogota, O., Goldenzweig, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gruberová, Z., Gu, T., Guan, Y., Gudkova, K., Halder, S., Han, Y., Hara, T., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., Heidelbach, A., de la Cruz, I. Heredia, Villanueva, M. Hernández, Hershenhorn, A., Higuchi, T., Hill, E. C., Hoek, M., Hohmann, M., Horak, P., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ipsita, N., Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Jackson, P., Jacobs, W. W., Jang, E. -J., Ji, Q. P., Jia, S., Jin, Y., Johnson, A., Junkerkalefeld, H., Kakuno, H., Kaliyar, A. B., Kandra, J., Kang, K. H., Karyan, G., Kawasaki, T., Keil, F., Ketter, C., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kindo, H., Kinoshita, K., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Korobov, A., Korpar, S., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Križan, P., Krokovny, P., Kuhr, T., Kumar, M., Kumar, R., Kumara, K., Kunigo, T., Kuzmin, A., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Leboucher, R., Diberder, F. R. Le, Lee, M. J., Leitl, P., Levit, D., Lewis, P. M., Li, C., Li, J., Li, L. K., Li, Y., Libby, J., Liu, Q. Y., Liu, Z. Q., Liventsev, D., Longo, S., Lueck, T., Luo, T., Lyu, C., Ma, Y., Maggiora, M., Maharana, S. P., Maiti, R., Maity, S., Mancinelli, G., Manfredi, R., Manoni, E., Mantovano, M., Marcantonio, D., Marcello, S., Marinas, C., Martel, L., Martellini, C., Martini, A., Martinov, T., Massaccesi, L., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., McKenna, J. A., Mehta, R., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Mirra, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Molina-Gonzalez, N., Mondal, S., Moneta, S., Moser, H. -G., Mrvar, M., Mussa, R., Nakamura, I., Nakano, T., Nakazawa, Y., Charan, A. Narimani, Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nazaryan, G., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Otani, F., Pakhlov, P., Pakhlova, G., Paladino, A., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S. -H., Paschen, B., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purwar, H., Rad, N., Rados, P., Raeuber, G., Raiz, S., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Roehrken, M., Roney, J. M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sandilya, S., Sangal, A., Santelj, L., Sato, Y., Savinov, V., Scavino, B., Schmitt, C., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Selce, A., Senyo, K., Serrano, J., Sevior, M. E., Sfienti, C., Shan, W., Sharma, C., Shi, X. D., Shillington, T., Shiu, J. -G., Shtol, D., Sibidanov, A., Simon, F., Singh, J. B., Skorupa, J., Sobie, R. J., Sobotzik, M., Soffer, A., Sokolov, A., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stavroulakis, P., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Sumihama, M., Sumisawa, K., Sutcliffe, W., Svidras, H., Takahashi, M., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Thaller, A., Tittel, O., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Uglov, T., Unger, K., Unno, Y., Uno, K., Uno, S., Urquijo, P., Ushiroda, Y., Vahsen, S. E., van Tonder, R., Varner, G. S., Varvell, K. E., Vinokurova, A., Vismaya, V. S., Vitale, L., Vobbilisetti, V., Volpe, R., Wach, B., Wakai, M., Wallner, S., Wang, D., Wang, E., Wang, M. -Z., Wang, Z., Warburton, A., Watanabe, M., Watanuki, S., Welsch, M., Wessel, C., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Yin, J. H., Yoshihara, K., Yuan, C. Z., Zani, L., Zhang, Y., Zhilich, V., Zhou, J. S., Zhou, Q. D., Zhukova, V. I., and Žlebčík, R.
Subjects: High Energy Physics - Experiment
Abstract: We report results from a study of $B^\pm \rightarrow DK^\pm$ decays followed by $D$ decaying to $CP$~eigenstates, where $D$ indicates a $D^0$ or $\bar{D}^{0}$ meson. These decays are sensitive to the Cabibbo-Kobayashi-Maskawa unitarity-triangle angle $\phi_{3}$. The results are based on a combined analysis of the final data set of $772 \times 10^6~B\bar{B}$ pairs collected by the Belle experiment and a data set of $198 \times 10^6~B\bar{B}$ pairs collected by the Belle~II experiment, both in electron-positron collisions at the $\Upsilon(4S)$ resonance. We measure the $CP$ asymmetries to be $\mathcal{ A}_{CP +} =~(+12.5 \pm 5.8 \pm 1.4)\% $ and $\mathcal{ A}_{CP -} =~(-16.7 \pm 5.7 \pm 0.6)\%$, and the ratios of branching fractions to be $\mathcal{ R}_{CP+}=~1.164 \pm 0.081 \pm 0.036 $ and $\mathcal{ R}_{CP-} =~1.151 \pm 0.074 \pm 0.019$. The first contribution to the uncertainties is statistical, and the second is systematic. The asymmetries $\mathcal{A}_{CP +}$ and $\mathcal{A}_{CP -}$ have similar magnitudes and opposite signs; their difference corresponds to 3.5~standard deviations. From these values we calculate 68.3\% confidence intervals of ($8.5^{\circ}<\phi_{3}<16.5^{\circ}$) or ($84.5^{\circ}<\phi_{3}<95.5^{\circ}$) or ($163.3^{\circ}<\phi_{3}<171.5^{\circ}$) and $0.321
Published: 2023

7. Study on the accidental background of the JSNS$^2$ experiment

Author: Lee, D. H., Ajimura, S., Cheoun, M. K., Choi, J. H., Choi, J. Y., Dodo, T., Goh, J., Haga, K., Harada, M., Hasegawa, S., Hiraiwa, T., Hwang, W., Jang, H. I., Jang, J. S., Jeon, H., Jeon, S., Joo, K. K., Jung, D. E., Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B., Kim, W., Kinoshita, H., Konno, T., Lim, I. T., Little, C., Marzec, E., Maruyama, T., Masuda, S., Meigom, S., Monjushiro, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Pac, M. Y., Park, H. W., Park, J. S., Park, R. G., Peeters, S. J. M., Rott, C., Sakai, K., Sakamoto, S., Shima, T., Shin, C. D., Spitz, J., Suekane, F., Sugaya, Y., Suzuya, K., Taira, M., Yamaguchi, Y., Yeh, M., Yeo, I. S., Yoo, C., and Yu, I.
Subjects: High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract: JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment which searches for sterile neutrinos via the observation of $\bar{\nu}_{\mu} \to \bar{\nu}_{e}$ appearance oscillations using muon decay-at-rest neutrinos. The data taking of JSNS$^2$ have been performed from 2021. In this manuscript, a study of the accidental background is presented. The rate of the accidental background is (9.29$\pm 0.39) \times 10^{-8}$ / spill with 0.75 MW beam power and comparable to the number of searching signals., Comment: arXiv admin note: substantial text overlap with arXiv:2111.07482
Published: 2023
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8. Thermodynamic Temperature Measurements from the Melting Point of Gallium Down to the Triple Point of Mercury

Author: Widiatmo, J. V., Misawa, T., Saito, I., Nakano, T., Ogura, H., and Kawamura, Y.
Published: 2024
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9. Reconstruction of 400 GeV/c proton interactions with the SHiP-charm project

Author: Ahdida, C., Akmete, A., Albanese, R., Alexandrov, A., Alicante, F., Alt, J., Aoki, S., Arduini, G., Back, J. J., Dos Santos, F. Baaltasar, Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, V., Betancourt, C., Bezshyiko, I., Bezshyyko, O., Bick, D., Bieschke, S., Blanco, A., Boehm, J., Bogomilov, M., Boiarska, I., Bondarenko, K., Bonivento, W. M., Borburgh, J., Boyarsky, A., Brenner, R., Breton, D., Brignoli, A., Büscher, V., Buonaura, A., Buontempo, S., Cadeddu, S., Calviani, M., Campanelli, M., Casolino, M., Centanni, D., Charitonidis, N., Chau, P., Chauveau, J., Choi, K.-Y., Chumakov, A., Cicero, V., Climescu, M., Conaboy, A., Congedo, L., Cornelis, K., Cristinziani, M., Crupano, A., Dallavalle, G. M., Datwyler, A., D’Ambrosio, N., D’Appollonio, G., de Asmundis, R., De Carvalho Saraiva, J., De Lellis, G., de Magistris, M., De Roeck, A., De Serio, M., De Simone, D., Di Crescenzo, A., Di Giulio, L., Dib, C., Dijkstra, H., Dougherty, L. A., Drohan, V., Dubreuil, A., Durhan, O., Ehlert, M., Elikkaya, E., Fabbri, F., Fedotovs, F., Ferrillo, M., Ferro-Luzzi, M., Fini, R. A., Fischer, H., Fonte, P., Franco, C., Fraser, M., Fresa, R., Froeschl, R., Fukuda, T., Galati, G., Gall, J., Gatignon, L., Gentile, V., Goddard, B., Golinka-Bezshyyko, L., Golutvin, A., Gorbounov, P., Gorkavenko, V., Grandchamp, A. L., Graverini, E., Grenard, J.-L., Grenier, D., Guler, A. M., Haefeli, G. J., Hagner, C., Hakobyan, H., Harris, I. W., van Herwijnen, E., Hessler, C., Hollnagel, A., Hosseini, B., Iaselli, G., Iuliano, A., Jacobsson, R., Joković, D., Jonker, M., Kadenko, I., Kain, V., Kaiser, B., Kamiscioglu, C., Kershaw, K., Khoriauli, G., Kim, Y. G., Kitagawa, N., Ko, J.-W., Kodama, K., Kolev, D. I., Komatsu, M., Kono, A., Kormannshaus, S., Korol, I., Korzenev, A., Kostyukhin, V., Platia, E. Koukovini, Kovalenko, S., Lacker, H. M., Lamont, M., Lantwin, O., Lauria, A., Lee, K. S., Lee, K. Y., Leonardo, N., Lévy, J.-M., Loschiavo, V. P., Lopes, L., Sola, E. Lopez, Lyons, F., Lyubovitskij, V., Maalmi, J., Magnan, A.-M., Manabe, Y., Manfredi, M., Marsh, S., Marshall, A. M., Mermod, P., Miano, A., Mikado, S., Mikulenko, A., Milstead, D. A., Montanari, A., Montesi, M. C., Morishima, K., Muttoni, Y., Naganawa, N., Nakamura, M., Nakano, T., Ninin, P., Nishio, A., Ogawa, S., Osborne, J., Ovchynnikov, M., Owtscharenko, N., Owen, P. H., Pacholek, P., Park, B. D., Pastore, A., Patel, M., Perillo-Marcone, A., Petkov, G. L., Petridis, K., Prieto, J. Prieto, Prota, A., Quercia, A., Rademakers, A., Rakai, A., Rawlings, T., Redi, F., Reghunath, A., Ricciardi, S., Rinaldesi, M., Rodin, Volodymyr, Rodin, Viktor, Robbe, P., Cavalcante, A. B. Rodrigues, Rokujo, H., Rovelli, T., Ruchayskiy, O., Ruf, T., Galan, F. Sanchez, Diaz, P. Santos, Ull, A. Sanz, Sato, O., Schliwinski, J. S., Schmidt-Parzefall, W., Schumann, M., Serra, N., Sgobba, S., Shadura, O., Shaposhnikov, M., Shchutska, L., Shibuya, H., Shihora, L., Shirobokov, S., Silverstein, S. B., Simone, S., Simoniello, R., Soares, G., Sohn, J. Y., Sokolenko, A., Solodko, E., Stoel, L., Stramaglia, M. E., Sukhonos, D., Suzuki, Y., Takahashi, S., Tastet, J. L., Timiryasov, I., Tioukov, V., Tommasini, D., Torii, M., Tosi, N., Treille, D., Tsenov, R., Vankova-Kirilova, G., Vannucci, F., Venkova, P., Venturi, V., Vilchinski, S., Vincke, Heinz, Vincke, Helmut, Visone, C., van Waasen, S., Wanke, R., Wertelaers, P., Williams, O., Woo, J.-K., Wurm, M., Xella, S., Yilmaz, D., Yilmazer, A. U., Yoon, C. S., and Zimmerman, J.
Published: 2024
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10. Measurement of the $e^+e^- \to B_s^0 \bar{B}_s^0 X$ cross section in the energy range from $10.63$ to $11.02$ GeV using inclusive $D_s^{\pm}$ and $D^0$ production

Author: Belle Collaboration, Zhukova, V., Mizuk, R., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Banerjee, Sw., Bauer, M., Behera, P., Belous, K., Bennett, J., Bernlochner, F., Bessner, M., Bilka, T., Biswas, D., Bobrov, A., Bodrov, D., Bondar, A., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Dong, T. V., Dubey, S., Ecker, P., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Gu, T., Gudkova, K., Hadjivasiliou, C., Hara, T., Hayasaka, K., Hazra, S., Hedges, M. T., Herrmann, D., Hou, W. -S., Hsu, C. -L., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, K. K., Kaliyar, A. B., Kawasaki, T., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kumar, M., Kumar, R., Kuzmin, A., Kwon, Y. -J., Lai, Y. -T., Lam, T., Laurenza, M., Lee, S. C., Levit, D., Li, L. K., Libby, J., Lieret, K., Liventsev, D., Ma, Y., Masuda, M., Matsuda, T., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mohanty, G. B., Nakamura, I., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, H., Park, J., Park, S. -H., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Santelj, L., Savinov, V., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Shan, W., Shapkin, M., Sharma, C., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Tiwary, R., Trabelsi, K., Uchida, M., Unno, Y., Uno, S., Usov, Y., Vahsen, S. E., Varner, G., Vinokurova, A., Wang, D., Wang, E., Wang, M. -Z., Wang, X. L., Watanabe, M., Watanuki, S., Werbycka, O., Won, E., Yabsley, B. D., Yan, W., Yin, J. H., Yuan, C. Z., Yuan, L., Zhang, Z. P., and Zhilich, V.
Subjects: High Energy Physics - Experiment
Abstract: We report the first measurement of the inclusive $e^+e^- \to b\bar{b} \to D_s^{\pm}X$ and $e^+e^- \to b\bar{b} \to D^0/\bar{D}^0X$ cross sections in the energy range from $10.63$ to $11.02$. Based on these results, we determine $\sigma(e^+ e^- \to B_s^0 \bar{B}_s^0 X)$ and $\sigma(e^+ e^- \to B\bar{B}X)$ in the same energy range. We measure the fraction of $B_s^0$ events at $\Upsilon(10860)$ to be $f_{\rm s}=(22.0^{+2.0}_{-2.1})\%$. We determine also the ratio of the $B_s^0$ inclusive branching fractions $\mathcal{B}(B_s^0 \to D^0/\bar{D}^0X)/\mathcal{B}(B_s^0 \to D_s^{\pm} X)=0.416 \pm 0.018 \pm 0.092$. The results are obtained using the data collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider.
Published: 2023
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11. Search for a heavy neutrino in $\tau$ decays at Belle

Author: Belle Collaboration, Liventsev, D., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Ayad, R., Babu, V., Banerjee, Sw., Bauer, M., Behera, P., Belous, K., Bennett, J., Bessner, M., Bilka, T., Biswas, D., Bodrov, D., Bonvicini, G., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chen, A., Cheon, B. G., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Doležal, Z., Dong, T. V., Dossett, D., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Giri, A., Goldenzweig, P., Graziani, E., Gu, T., Gudkova, K., Hadjivasiliou, C., Han, X., Hara, T., Hayasaka, K., Hayashii, H., Hedges, M. T., Herrmann, D., Villanueva, M. Hernández, Hsu, C. -L., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Kaliyar, A. B., Kang, K. H., Kawasaki, T., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kumar, M., Kumar, R., Kumara, K., Kwon, Y. -J., Lam, T., Lange, J. S., Lee, S. C., Lewis, P., Li, L. K., Li, Y., Gioi, L. Li, Libby, J., Lieret, K., Lin, Y. -R., Luo, T., Matsuda, T., Matvienko, D., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mussa, R., Nakamura, I., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, J., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uehara, S., Uno, S., Usov, Y., van Tonder, R., Varner, G., Varvell, K. E., Vinokurova, A., Wang, M. -Z., Wang, X. L., Watanabe, M., Watanuki, S., Werbycka, O., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Yelton, J., Yin, J. H., Yuan, C. Z., Yuan, L., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We report on a search for a heavy neutrino in the decays $\tau^- \to \pi^- \nu_h$, $\nu_h \to \pi^\pm \ell-+$, $\ell = e, \mu$. The results are obtained using the full data sample collected with the Belle detector at the KEKB asymmetric energy $e^+e^-$ collider. We observe no significant signal and set 90% CL upper limits on the couplings of the heavy right-handed neutrinos to the conventional SM left-handed neutrinos in the mass range 0.2-1.6 GeV/c$^2$., Comment: 13 pages, 6 figures, 2 tables, including supplemental material. Published by PRL. arXiv admin note: text overlap with arXiv:1301.1105
Published: 2022
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12. Measurement of the mass and width of the $\Lambda_c(2625)^+$ and the branching ratios of $\Lambda_c(2625)^+ \to \Sigma_c^{0}\pi^{+}$ and $\Lambda_c(2625)^+ \to \Sigma_c^{++}\pi^{-}$

Author: Belle Collaboration, Wang, D., Yelton, J., Adachi, I., Ahn, J. K., Aihara, H., Asner, D. M., Atmacan, H., Ayad, R., Babu, V., Banerjee, Sw., Bauer, M., Behera, P., Belous, K., Bennett, J., Bessner, M., Bilka, T., Biswas, D., Bodrov, D., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chen, A., Cheon, B. G., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Doležal, Z., Dong, T. V., Dossett, D., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Giri, A., Goldenzweig, P., Graziani, E., Gu, T., Gudkova, K., Hadjivasiliou, C., Han, X., Hayasaka, K., Hayashii, H., Hedges, M. T., Hsu, C. -L., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Kaliyar, A. B., Kang, K. H., Kawasaki, T., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kumar, M., Kumar, R., Kumara, K., Kwon, Y. -J., Lam, T., Lange, J. S., Lee, S. C., Lewis, P., Li, L. K., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Lin, Y. -R., Liventsev, D., Matsuda, T., Matvienko, D., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Mussa, R., Nakamura, I., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlova, G., Pardi, S., Park, H., Park, J., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rout, N., Russo, G., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shan, W., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uno, S., van Tonder, R., Varner, G., Varvell, K. E., Vinokurova, A., Wang, M. -Z., Wang, X. L., Watanabe, M., Watanuki, S., Werbycka, O., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Yin, J. H., Yuan, C. Z., Yuan, L., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: Using the entire data sample of $980\,\textrm{fb}^{-1}$ collected with the Belle detector operating at the KEKB asymmetric-energy collider, we report the measurement of the mass, width, and the relative branching ratios of the $\Lambda_c(2625)^+$ charmed baryon. The mass difference between $\Lambda_c(2625)^+$ and $\Lambda_c^+$ is measured to be $M(\Lambda_c(2625)^{+}) - M(\Lambda_c^{+}) = 341.518 \pm 0.006 \pm 0.049\ \mathrm{MeV}/\mathit{c}^2$. The upper limit on the width is measured to be $\Gamma(\Lambda_c(2625)^+) < 0.52\,\mathrm{MeV}/\textit{c}^2$ at 90\% credibility level. Based on a full Dalitz plot fit, branching ratios with respect to the mode $\Lambda_c(2625)^+ \to \Lambda_c^+ \pi^+ \pi^-$ are measured to be $\frac{\mathcal{B}(\Lambda_c(2625)^+ \to \Sigma_c^{0} \pi^{+})} {\mathcal{B}(\Lambda_c(2625)^+ \to \Lambda_c^+ \pi^{+} \pi^{-})} = (5.19 \pm 0.23 \pm 0.40) \%$ and $\frac{\mathcal{B}(\Lambda_c(2625)^+ \to \Sigma_c^{++} \pi^{-})} {\mathcal{B}(\Lambda_c(2625)^+ \to \Lambda_c^+ \pi^{+} \pi^{-})} = (5.13 \pm 0.26 \pm 0.32) \%$. These measurements can be used to further constrain the parameters of the underlying theoretical models.
Published: 2022
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13. Comparison of the Residual Amount of an Ophthalmic Viscosurgical Device Among Different Types of Intraocular Lens Implants in vitro

Author: Oki T, Horiguchi H, Terauchi R, Gunji H, and Nakano T
Subjects: cataract surgery, intraocular lens, ophthalmic viscosurgical devices, Ophthalmology, RE1-994
Abstract: Tetsutaro Oki, Hiroshi Horiguchi, Ryo Terauchi, Hisato Gunji, Tadashi Nakano Department of Ophthalmology, The Jikei University School of Medicine, Minatoku, Tokyo, 105-8461, JapanCorrespondence: Tetsutaro Oki, Department of Ophthalmology, The Jikei University School of Medicine, 3-25-8, Nishi-shinbashi, Minatoku, Tokyo, 105-8461, Japan, Email 23.o.tetsu@gmail.comPurpose: Although ophthalmic viscosurgical devices are quite important for safe cataract surgery, currently, postoperative residual ophthalmic viscosurgical devices can cause various complications. Previously, we developed a method to visualize residual ophthalmic viscosurgical devices after irrigation/aspiration in vitro and found that the amount of residual ophthalmic viscosurgical device on a single-piece intraocular lens was greater than that on a three-piece intraocular lens. In the present study, we compared the amounts of residual ophthalmic viscosurgical device among various foldable intraocular lenses to investigate the factors that determine the quantity of residual ophthalmic viscosurgical device.Patients and Methods: Simulated cataract surgery was performed in pig eyes using an ophthalmic viscosurgical device labeled with fluorescent silica particles. After the simulated surgery procedure, the fluorescent silica attached to the intraocular lens was observed and quantified by inductively coupled plasma-atomic emission spectrometry after intraocular lens removal. The amount of residual ophthalmic viscosurgical device was compared among five representative single-piece intraocular lenses and one three-piece intraocular lens.Results: The distribution and amount of the residual ophthalmic viscosurgical device differed for each intraocular lens. The amount of silicon in the lens capsule differed among the intraocular lens types.Conclusion: The postoperative residual tendency of ophthalmic viscosurgical devices differed among various single-piece intraocular lenses. The behavior of the intraocular lenses within the capsule affected the residual tendency. The removal of ophthalmic viscosurgical device in the lens capsule should be tailored for each intraocular lens to improve efficiency.Keywords: cataract surgery, intraocular lens, ophthalmic viscosurgical devices
Published: 2024

14. Comparison of Refractive Prediction Error by Axial Length in Flanged Intrascleral Intraocular Lens Fixation

Author: Kabata Y, Oki T, and Nakano T
Subjects: flanged intrascleral iol fixation, refractive prediction error, srk/t formula, axial length, Ophthalmology, RE1-994
Abstract: Yoshiaki Kabata,1 Tetsutaro Oki,1 Tadashi Nakano2 1Department of Ophthalmology, Jikei University School of Medicine, Daisan Hospital, Tokyo, Japan; 2Department of Ophthalmology, The Jikei University School of Medicine, Tokyo, JapanCorrespondence: Yoshiaki Kabata, Department of Ophthalmology, Jikei University School of Medicine, Daisan Hospital, 4-11-1 Izumihontyou, Komae-si, Tokyo, 125-8506, Japan, Tel +81334801151, Fax +81334805700, Email kabata22122@gmail.comPurpose: To evaluate the refractive prediction error in flanged intrascleral intraocular lens (IOL) fixation using the SRK/T formula and compare the axial length using a single IOL.Methods: Seventy-six eyes from 70 patients (45 males and 25 females) were included in this study. The mean age at the time of surgery was 73.4 ± 12.3 years. The patients underwent flanged IOL fixation using a PN6A (Kowa). All surgeries were performed by two surgeons (Y. K. and T. O.) between Jan 2020 and Dec 2022 at Jikei University Daisan Hospital. IOL power was calculated using the SRK/T formula with IOL Master 700 (Carl Zeiss) as the bag power. The recommended value of 119.0 was used for the A-constant. The actual refractive spherical equivalent was calculated and compared with preoperative predictions. Refractive prediction errors were defined as the deviation of the actual postoperative spherical equivalent refraction in diopters from the predicted preoperative spherical equivalent refraction. The patients were divided into three groups according to axial length: < 22.0 mm (short eyes), 22.0– 24.5 mm (medium eyes), and > 24.5 mm (long eyes), and the refractive prediction errors and mean absolute errors were compared.Results: The mean refractive prediction error was − 0.20 ± 0.52D. The mean absolute error was 0.44 ± 0.33D. The mean refractive prediction errors were not significantly different between the 22.0– 24.5 mm (medium eyes) and > 24.5 mm (long eyes) groups. (P=0.06) The mean absolute errors were not significantly different between the two groups (P=0.10).Conclusion: The SRK/T formula worked well regardless of whether the eyes were medium or long according to the axial length in the flanged intrascleral IOL fixation.Keywords: flanged intrascleral IOL fixation, refractive prediction error, SRK/T formula, axial length
Published: 2024

15. Measurement of branching-fraction ratios and CP asymmetries in B± → DCP±K± decays at Belle and Belle II

Author: Adachi, I., Aggarwal, L., Aihara, H., Akopov, N., Aloisio, A., Anh Ky, N., Asner, D. M., Atmacan, H., Aushev, T., Aushev, V., Aversano, M., Ayad, R., Babu, V., Bae, H., Bahinipati, S., Bambade, P., Banerjee, Sw., Barrett, M., Baudot, J., Bauer, M., Baur, A., Beaubien, A., Becherer, F., Becker, J., Behera, P. K., Belous, K., Bennett, J. V., Bernlochner, F. U., Bertacchi, V., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bhuyan, B., Bianchi, F., Bilka, T., Biswas, D., Bobrov, A., Bodrov, D., Bolz, A., Bondar, A., Borah, J., Bozek, A., Bračko, M., Branchini, P., Briere, R. A., Browder, T. E., Budano, A., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Cerasoli, J., Chang, M.-C., Chang, P., Cheema, P., Chekelian, V., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H.-E., Cho, K., Choi, S.-K., Choi, Y., Choudhury, S., Cochran, J., Corona, L., Cremaldi, L. M., Czank, T., Das, S., Dattola, F., De La Cruz-Burelo, E., De La Motte, S. A., de Marino, G., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Di Capua, F., Dingfelder, J., Doležal, Z., Domínguez Jiménez, I., Dong, T. V., Dorigo, M., Dort, K., Dossett, D., Dreyer, S., Dubey, S., Dujany, G., Ecker, P., Eliachevitch, M., Feichtinger, P., Ferber, T., Ferlewicz, D., Fillinger, T., Finck, C., Finocchiaro, G., Fodor, A., Forti, F., Frey, A., Fulsom, B. G., Gabrielli, A., Ganiev, E., Garcia-Hernandez, M., Garg, R., Garmash, A., Gaudino, G., Gaur, V., Gaz, A., Gellrich, A., Ghevondyan, G., Ghosh, D., Ghumaryan, H., Giakoustidis, G., Giordano, R., Giri, A., Gobbo, B., Godang, R., Gogota, O., Goldenzweig, P., Gradl, W., Granderath, S., Graziani, E., Greenwald, D., Gruberová, Z., Gu, T., Guan, Y., Gudkova, K., Halder, S., Han, Y., Hara, T., Hayasaka, K., Hayashii, H., Hazra, S., Hearty, C., Hedges, M. T., Heidelbach, A., Heredia de la Cruz, I., Hernández Villanueva, M., Hershenhorn, A., Higuchi, T., Hill, E. C., Hoek, M., Hohmann, M., Horak, P., Hou, W.-S., Hsu, C.-L., Iijima, T., Inami, K., Ipsita, N., Ishikawa, A., Ito, S., Itoh, R., Iwasaki, M., Jackson, P., Jacobs, W. W., Jang, E.-J., Ji, Q. P., Jia, S., Jin, Y., Johnson, A., Junkerkalefeld, H., Kakuno, H., Kaliyar, A. B., Kandra, J., Kang, K. H., Karyan, G., Kawasaki, T., Keil, F., Ketter, C., Kiesling, C., Kim, C.-H., Kim, D. Y., Kim, K.-H., Kim, Y.-K., Kindo, H., Kinoshita, K., Kodyš, P., Koga, T., Kohani, S., Kojima, K., Korobov, A., Korpar, S., Kovalenko, E., Kowalewski, R., Kraetzschmar, T. M. G., Križan, P., Krokovny, P., Kuhr, T., Kumar, M., Kumar, R., Kumara, K., Kunigo, T., Kuzmin, A., Kwon, Y.-J., Lacaprara, S., Lai, Y.-T., Lam, T., Lanceri, L., Lange, J. S., Laurenza, M., Leboucher, R., Le Diberder, F. R., Lee, M. J., Leitl, P., Levit, D., Lewis, P. M., Li, C., Li, J., Li, L. K., Li, Y., Libby, J., Liu, Q. Y., Liu, Z. Q., Liventsev, D., Longo, S., Lueck, T., Luo, T., Lyu, C., Ma, Y., Maggiora, M., Maharana, S. P., Maiti, R., Maity, S., Mancinelli, G., Manfredi, R., Manoni, E., Mantovano, M., Marcantonio, D., Marcello, S., Marinas, C., Martel, L., Martellini, C., Martini, A., Martinov, T., Massaccesi, L., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., McKenna, J. A., Mehta, R., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Mirra, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Molina-Gonzalez, N., Mondal, S., Moneta, S., Moser, H.-G., Mrvar, M., Mussa, R., Nakamura, I., Nakano, T., Nakazawa, Y., Narimani Charan, A., Naruki, M., Natkaniec, Z., Natochii, A., Nayak, L., Nazaryan, G., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Onuki, Y., Oskin, P., Otani, F., Pakhlov, P., Pakhlova, G., Paladino, A., Panta, A., Paoloni, E., Pardi, S., Parham, K., Park, H., Park, S.-H., Paschen, B., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Peruzzi, I., Peschke, R., Pestotnik, R., Pham, F., Piccolo, M., Piilonen, L. E., Podesta-Lerma, P. L. M., Podobnik, T., Pokharel, S., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purwar, H., Rad, N., Rados, P., Raeuber, G., Raiz, S., Reif, M., Reiter, S., Remnev, M., Ripp-Baudot, I., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Roehrken, M., Roney, J. M., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sandilya, S., Sangal, A., Santelj, L., Sato, Y., Savinov, V., Scavino, B., Schmitt, C., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Selce, A., Senyo, K., Serrano, J., Sevior, M. E., Sfienti, C., Shan, W., Sharma, C., Shi, X. D., Shillington, T., Shiu, J.-G., Shtol, D., Sibidanov, A., Simon, F., Singh, J. B., Skorupa, J., Sobie, R. J., Sobotzik, M., Soffer, A., Sokolov, A., Solovieva, E., Spataro, S., Spruck, B., Starič, M., Stavroulakis, P., Stefkova, S., Stottler, Z. S., Stroili, R., Strube, J., Sumihama, M., Sumisawa, K., Sutcliffe, W., Svidras, H., Takahashi, M., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Thaller, A., Tittel, O., Tiwary, R., Tonelli, D., Torassa, E., Toutounji, N., Trabelsi, K., Tsaklidis, I., Uchida, M., Ueda, I., Uehara, S., Uematsu, Y., Uglov, T., Unger, K., Unno, Y., Uno, K., Uno, S., Urquijo, P., Ushiroda, Y., Vahsen, S. E., van Tonder, R., Varner, G. S., Varvell, K. E., Vinokurova, A., Vismaya, V. S., Vitale, L., Vobbilisetti, V., Volpe, R., Wach, B., Wakai, M., Wallner, S., Wang, D., Wang, E., Wang, M.-Z., Wang, Z., Warburton, A., Watanabe, M., Watanuki, S., Welsch, M., Wessel, C., Xu, X. P., Yabsley, B. D., Yamada, S., Yan, W., Yang, S. B., Yin, J. H., Yoshihara, K., Yuan, C. Z., Zani, L., Zhang, Y., Zhilich, V., Zhou, J. S., Zhou, Q. D., Zhukova, V. I., and Žlebčík, R.
Published: 2024
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16. Study on the accidental background of the JSNS2 experiment

Author: Lee, D. H., Ajimura, S., Cheoun, M. K., Choi, J. H., Choi, J. Y., Dodo, T., Goh, J., Haga, K., Harada, M., Hasegawa, S., Hiraiwa, T., Hwang, W., Jang, H. I., Jang, J. S., Jeon, H., Jeon, S., Joo, K. K., Jung, D. E., Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B., Kim, W., Kinoshita, H., Konno, T., Lim, I. T., Little, C., Marzec, E., Maruyama, T., Masuda, S., Meigo, S., Monjushiro, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Pac, M. Y., Park, H. W., Park, J. S., Park, R. G., Peeters, S. J. M., Rott, C., Sakai, K., Sakamoto, S., Shima, T., Shin, C. D., Spitz, J., Suekane, F., Sugaya, Y., Suzuya, K., Taira, M., Yamaguchi, Y., Yeh, M., Yeo, I. S., Yoo, C., and Yu, I.
Published: 2024
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17. First Observation of $\Lambda\pi^+$ and $\Lambda\pi^-$ Signals near the $\bar{K}N (I=1)$ Mass Threshold in $\Lambda_c^+\rightarrow\Lambda\pi^+\pi^+\pi^-$ Decay

Author: Belle Collaboration, Ma, Y., Yelton, J., Tanida, K., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Banerjee, Sw., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswas, D., Bobrov, A., Bodrov, D., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Graziani, E., Gudkova, K., Hadjivasiliou, C., Halder, S., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Hsu, C. -L., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Kaliyar, A. B., Kang, K. H., Kawasaki, T., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kumar, R., Kumara, K., Kwon, Y. -J., Lam, T., Lange, J. S., Lee, S. C., Lewis, P., Li, L. K., Li, Y., Gioi, L. Li, Libby, J., Lieret, K., Lin, Y. -R., Liventsev, D., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mohanty, G. B., Mussa, R., Nakamura, I., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, J., Patra, S., Paul, S., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sandilya, S., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shan, W., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tenchini, F., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, K., Uno, S., Urquijo, P., Usov, Y., Vahsen, S. E., van Tonder, R., Varner, G., Vinokurova, A., Vossen, A., Wang, D., Wang, M. -Z., Watanabe, M., Watanuki, S., Werbycka, O., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Yin, J. H., Yuan, C. Z., Yuan, L., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: Using the data sample of 980 fb$^{-1}$ collected with the Belle detector operating at the KEKB asymmetric-energy $e^+e^-$ collider, we present the results of an investigation of the $\Lambda\pi^+$ and $\Lambda\pi^-$ invariant mass distributions looking for substructure in the decay $\Lambda_c^+\rightarrow\Lambda\pi^+\pi^+\pi^-$. We find a significant signal in each mass dis\ tribution. When interpreted as resonances, we find for the $\Lambda\pi^+$ ($\Lambda\pi^-$) combination a mass of $1434.3 \pm 0.6 (\mathrm{stat}) \pm 0.9(\mathrm{syst})$ MeV/$c^2$ [$1438.5 \pm 0.9 (\mathrm{stat}) \pm 2.5(\mathrm{syst})$ MeV/$c^2$], an intrinsic width of $11.5 \pm 2.8 (\mathrm{stat}) \pm 5.3(\mathrm{syst})$ MeV/$c^2$ [$33.0 \pm 7.5 (\mathrm{stat}) \pm 23.6(\mathrm{syst})$ MeV/$c^2$] with a significance of 7.5$\sigma$ (6.2$\sigma$). As these two signals are very close to the $\bar{K}N$ threshold, we also investigate the possibility of a $\bar{K}N$ cusp, and find that \ we cannot discriminate between these two interpretations due to the limited size of the data sample.
Published: 2022
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18. Updated constraints on sterile neutrino mixing in the OPERA experiment using a new $\nu_e$ identification method

Author: Agafonova, N., Alexandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Bertolin, A., Bozza, C., Brugnera, R., Buontempo, S., Chernyavskiy, M., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Fini, R. A., Fukuda, T., Galati, G., Garfagnini, A., Gentile, V., Goldberg, J., Gorbunov, S., Gornushkin, Y., Grella, G., Guler, A. M., Gustavino, C., Hagner, C., Hara, T., Hayakawa, T., Hollnagel, A., Ishiguro, K., Iuliano, A., Jakovcic, K., Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kim, S. H., Kitagawa, N., Klicek, B., Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Laudisio, F., Lauria, A., Longhin, A., Loverre, P., Malgin, A., Mandrioli, G., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Mikado, S., Miyanishi, M., Mizutani, F., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Niwa, K., Ogawa, S., Okateva, N., Ozaki, K., Paoloni, A., Paparella, L., Park, B. D., Pasqualini, L., Pastore, A., Patrizii, L., Pessard, H., Podgrudkov, D., Polukhina, N., Pozzato, M., Pupilli, F., Roda, M., Roganova, T., Rokujo, H., Rosa, G., Ryazhskaya, O., Sato, O., Schembri, A., Shakiryanova, I., Shchedrina, T., Shibayama, E., Shibuya, H., Shiraishi, T., Simone, S., Sirignano, C., Sirri, G., Sotnikov, A., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., Stipcevic, M., Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Tufanli, S., Vasina, S., Vilain, P., Voevodina, E., Votano, L., Vuilleumier, J. L., Wilquet, G., and Yoon, C. S.
Subjects: High Energy Physics - Experiment
Abstract: This paper describes a new $\nu_e$ identification method specifically designed to improve the low-energy ($< 30\,\mathrm{GeV}$) $\nu_e$ identification efficiency attained by enlarging the emulsion film scanning volume with the next generation emulsion readout system. A relative increase of 25-70% in the $\nu_e$ low-energy region is expected, leading to improvements in the OPERA sensitivity to neutrino oscillations in the framework of the 3 + 1 model. The method is applied to a subset of data where the detection efficiency increase is expected to be more relevant, and one additional $\nu_e$ candidate is found. The analysis combined with the $\nu_\tau$ appearance results improves the upper limit on $\sin^2 2\theta_{\mu e}$ to 0.016 at 90% C.L. in the MiniBooNE allowed region $\Delta m^2_{41} \sim 0.3\,\mathrm{eV}^2$., Comment: 13 pages, 6 figures
Published: 2022

19. Study of $e^+e^- \rightarrow \Sigma^0 \overline{\Sigma}{}^0$ and $\Sigma^+\overline{\Sigma}{}^- $ by Initial State Radiation Method at Belle

Author: Belle Collaboration, Gong, G., Li, L. K., Zhang, Y., Yan, W., Adachi, I., Aihara, H., Said, S. Al, Asner, D. M., Atmacan, H., Aushev, T., Ayad, R., Babu, V., Banerjee, Sw., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswas, D., Bobrov, A., Bodrov, D., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chen, A., Chen, Y., Cheon, B. G., Chilikin, K., Cho, K., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Doležal, Z., Dong, T. V., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Graziani, E., Gudkova, K., Halder, S., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Hsu, C. -L., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, K. K., Kaliyar, A. B., Kang, K. H., Kawasaki, T., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kumar, R., Kumara, K., Kwon, Y. -J., Lam, T., Lange, J. S., Lee, S. C., Lewis, P., Li, C. H., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Lin, Y. -R., Liventsev, D., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mussa, R., Nakamura, I., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, J., Patra, S., Paul, S., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sakai, Y., Sandilya, S., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shan, W., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, M., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, K., Uno, S., Urquijo, P., Vahsen, S. E., van Tonder, R., Varner, G., Vinokurova, A., Vossen, A., Wang, M. -Z., Wang, X. L., Watanabe, M., Watanuki, S., Werbycka, O., Won, E., Xu, X., Yabsley, B. D., Yang, S. B., Yelton, J., Yin, J. H., Yuan, C. Z., Yuan, L., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: The processes $ e^+e^-\rightarrow \Sigma^0\overline{\Sigma}{}^0 $ and $ e^+e^-\rightarrow\Sigma^+\overline{\Sigma}{}^-$ are studied using initial-state-radiation events in a sample of 980 $\,\mbox{fb}^{-1}$ collected with the Belle detector at the KEKB asymmetric-energy $ e^+e^- $ collider. The cross sections from the mass threshold to $ 3{\mathrm{\,Ge\kern -0.1em V\!/}c^2} $ and the effective form factors of $ \Sigma^0 $ and $ \Sigma^+ $ are measured. In the charmonium region, we observe the decays $J/\psi\rightarrow\Sigma^0\overline{\Sigma}{}^0$ and $J/\psi\rightarrow\Sigma^+\overline{\Sigma}{}^-$ and determine the respective branching fractions., Comment: accepted by Phys. Rev. D
Published: 2022
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20. Measurement of branching fractions of $\Lambda_c^+\to{}pK_S^0K_S^0$ and $\Lambda_c^+\to{}pK_S^0\eta$ at Belle

Author: Belle Collaboration, Li, L. K., Kinoshita, K., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Banerjee, Sw., Behera, P., Belous, K., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswas, D., Bobrov, A., Bodrov, D., Bonvicini, G., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Budano, A., Campajola, M., Červenkov, D., Chang, M. -C., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Cho, S. -J., Choi, Y., Choudhury, S., Cinabro, D., Das, S., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Doležal, Z., Dong, T. V., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Gong, G., Graziani, E., Guan, Y., Gudkova, K., Hadjivasiliou, C., Halder, S., Han, X., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Hsu, C. -L., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Ji, Q. P., Jia, S., Jin, Y., Joo, K. K., Kang, K. H., Kawasaki, T., Kim, C. H., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kuhr, T., Kumar, M., Kumar, R., Kumara, K., Kwon, Y. -J., Lam, T., Lange, J. S., Lee, S. C., Li, C. H., Li, S. X., Li, Y., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Lin, Y. -R., Liventsev, D., Luo, T., Masuda, M., Matsuda, T., Matvienko, D., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mizuk, R., Mussa, R., Nakamura, I., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nayak, M., Nisar, N. K., Nishida, S., Ogawa, S., Ono, H., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, J., Passeri, A., Patra, S., Paul, S., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sakai, Y., Sandilya, S., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Sevior, M. E., Shan, W., Shapkin, M., Sharma, C., Shen, C. P., Shiu, J. -G., Simon, F., Singh, J. B., Solovieva, E., Starič, M., Strube, J. F., Sumihama, M., Sumiyoshi, T., Takizawa, M., Tamponi, U., Tang, S. S., Tanida, K., Tenchini, F., Uchida, M., Uglov, T., Unno, Y., Uno, K., Uno, S., Urquijo, P., Vahsen, S. E., van Tonder, R., Varner, G., Varvell, K. E., Vinokurova, A., Vossen, A., Wang, D., Wang, M. -Z., Wang, X. L., Watanabe, M., Watanuki, S., Werbycka, O., Wiechczynski, J., Won, E., Xu, X., Yabsley, B. D., Yan, W., Yang, S. B., Yelton, J., Yin, J. H., Yuan, C. Z., Yuan, L., Yusa, Y., Zhang, Z. P., Zhilich, V., and Zhukova, V.
Subjects: High Energy Physics - Experiment
Abstract: We present a study of a singly Cabibbo-suppressed decay $\Lambda_c^+\to{}pK_S^0K_S^0$ and a Cabibbo-favored decay $\Lambda_c^+\to{}pK_S^0\eta$ based on 980 $\rm fb^{-1}$ of data collected by the Belle detector, operating at the KEKB energy-asymmetric $e^+e^-$ collider. We measure their branching fractions relative to $\Lambda_c^+\to{}pK_S^0$: $\mathcal{B}(\Lambda_c^+\to{}pK_S^0K_S^0)/\mathcal{B}(\Lambda_c^+\to{}pK_S^0)={(1.48 \pm 0.08 \pm 0.04)\times 10^{-2}}$ and $\mathcal{B}(\Lambda_c^+\to{}pK_S^0\eta)/\mathcal{B}(\Lambda_c^+\to{}pK_S^0)={(2.73\pm 0.06\pm 0.13)\times 10^{-1}}$. Combining with the world average $\mathcal{B}(\Lambda_c^+\to{}pK_S^0)$, we have the absolute branching fractions: $\mathcal{B}(\Lambda_c^+\to{}pK_S^0K_S^0) = {(2.35\pm 0.12\pm 0.07 \pm 0.12 )\times 10^{-4}}$ and $\mathcal{B}(\Lambda_c^+\to{}pK_S^0\eta) = {(4.35\pm 0.10\pm 0.20 \pm 0.22 )\times 10^{-3}}$. The first and second uncertainties are statistical and systematic, respectively, while the third ones arise from the uncertainty on $\mathcal{B}(\Lambda_c^+\to{}pK_S^0)$. The mode $\Lambda_c^+\to{}pK_S^0K_S^0$ is observed for the first time and has a statistical significance of $>\!10\sigma$. The branching fraction of $\Lambda_c^+\to{}pK_S^0\eta$ has been measured with a threefold improvement in precision over previous results and is found to be consistent with the world average., Comment: 8 pages, 4 figures, accepted by Phys. Rev. D
Published: 2022
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21. Pressure dependence of the magnetic ground state in CePtSi2

Author: Dissanayake, S. E., Ye, F., Tian, W., Matsuda, M., Muto, H., Suzuki, S., Nakano, T., Watanabe, S., Gouchi, J., and Uwatoko, Y.
Subjects: Condensed Matter - Strongly Correlated Electrons
Abstract: CePtSi2 was reported to exhibit an antiferromagnetic order below T*=1.8 K at ambient pressure, a valence state change at ~1.2 GPa, and superconductivity in the range between 1.4 and 2.1 GPa with the maximum transition temperature of 0.14 K [T. Nakano et al., Phys. Rev. B 79, 172507 (2009)]. We have performed polycrystalline and single crystal neutron diffraction experiments to determine the magnetic structure under ambient and high pressures. We found that incommensurate magnetic peaks with the magnetic propagation vector of (0.32, 0, 0.11) at ambient pressure below T_{SDW}~1.25 K. Those magnetic peaks which originate from a spin-density-wave order with the easy axis along the c axis and an averaged ordered moment of 0.45(5) mu_B, suggesting that there may be an intermediate phase between T* and T_{SDW}. Applying pressures, the magnetic propagation vector shows no change and the magnetic order disappears around 1.0 GPa, which is much lower than the critical pressure for the superconducting phase. The results suggest that other than magnetic fluctuations may play a primary role in the superconducting pairing mechanism., Comment: 6 pages, 6 figures
Published: 2022
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22. Comparative Evaluation of Fundus Image Interpretation Accuracy in Glaucoma Screening Among Different Physician Groups

Author: Wada-Koike C, Terauchi R, Fukai K, Sano K, Nishijima E, Komatsu K, Ito K, Kato T, Tatemichi M, Kabata Y, and Nakano T
Subjects: glaucoma, fundus images, sensitivity, specificity, health checkup, Ophthalmology, RE1-994
Abstract: Chiharu Wada-Koike,1,&ast; Ryo Terauchi,1,&ast; Kota Fukai,2 Kei Sano,1 Euido Nishijima,1 Koji Komatsu,1 Kyoko Ito,3 Tomohiro Kato,3 Masayuki Tatemichi,2 Yoshiaki Kabata,4,&ast; Tadashi Nakano1 1Department of Ophthalmology, The Jikei University School of Medicine, Tokyo, Japan; 2Department of Preventive Medicine, Tokai University School of Medicine, Isehara, Japan; 3Centre for Preventive Medicine, The Jikei University School of Medicine, Tokyo, Japan; 4Department of Ophthalmology, Jikei University School of Medicine, Daisan Hospital, Tokyo, Japan&ast;These authors contributed equally to this workCorrespondence: Yoshiaki Kabata, Department of Ophthalmology, Jikei University School of Medicine, Daisan Hospital, 4-11-1 Izumihontyou, Komae-si, Tokyo, 125-8506, Japan, Tel +81 3 3480 1151, Fax +81 3 3480 5700, Email kabata22122@gmail.comPurpose: To examine the variability in glaucoma screening using fundus images among physicians, including non-ophthalmologists.Patients and Methods: Sixty-nine eyes from 69 patients, including 25 eyes with glaucoma, were included from the Jikei University Hospital from July 2019 to December 2022. Fundus images were captured using TRC-NW8 (Topcon Corporation, Tokyo, Japan), and were interpreted by 10 non-ophthalmologists, 10 non-specialist ophthalmologists, and 9 specialists for diagnostic accuracy. We analyzed differences in diagnostic accuracy among the three groups. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and Kappa coefficient were compared, using the Kruskal–Wallis test followed by a post hoc Dunn’s test.Results: The sensitivity and specificity were 0.22 and 0.92 for non-ophthalmologists, 0.49 and 0.83 for non-specialist ophthalmologists, and 0.68 and 0.87 for specialists, respectively. Both specialists and non-specialist ophthalmologists showed significantly higher sensitivity than non-ophthalmologists (Dunn’s test, P< 0.001 and P=0.031). There was no significant difference in specificity among the three groups (Kruskal–Wallis test, P=0.086). The PPV did not differ significantly between the groups (Kruskal–Wallis test, P=0.108), while the NPV was significantly higher in specialists compared to non-ophthalmologists (Dunn’s test, P< 0.001). Specialists also had a significantly higher Kappa coefficient than non-ophthalmologists and non-specialist ophthalmologists (Dunn’s test, P< 0.001 and P=0.024).Conclusion: Diagnostic accuracy varied significantly based on the physician’s background.Keywords: glaucoma, fundus images, sensitivity, specificity, health checkup
Published: 2024

23. Personality Traits Associated with Treatment Choice with an Explicit Statistical Prediction After an Explanation in a Negative Context: A Study in Patients with Glaucoma

Author: Kodaka F, Noro T, Kishimoto N, Kurosawa M, Itoh Y, Ogawa S, Watanabe T, Kubota M, Hori K, Shigeta M, and Nakano T
Subjects: conscientiousness, neuroticism, glaucoma, big five personality traits, Ophthalmology, RE1-994
Abstract: Fumitoshi Kodaka,1,&ast; Takahiko Noro,2,&ast; Nanami Kishimoto,2 Mei Kurosawa,2 Yoshinori Itoh,2 Shumpei Ogawa,2 Tomoyuki Watanabe,2 Masaomi Kubota,2 Kiyotaka Hori,3 Masahiro Shigeta,1 Tadashi Nakano2 1Department of Psychiatry, The Jikei University School of Medicine, Tokyo, Japan; 2Department of Ophthalmology, The Jikei University School of Medicine, Tokyo, Japan; 3Japan Medical Affairs, Santen Pharmaceutical Co., Ltd, Tokyo, Japan&ast;These authors contributed equally to this workCorrespondence: Tadashi Nakano, Department of Ophthalmology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 103-0003, Japan, Tel +81 3-3433-1111, Fax +81 3-3437-2665, Email tnakano@jikei.ac.jpPurpose: Over 50% of patients with early-stage glaucoma discontinue topical therapy within the first 6 months of treatment initiation. This risk of discontinuation could be reduced by how the ophthalmologist explains the treatment plan. Ophthalmologists can explain the treatment plan to patients in either positive or negative contexts. Although explanations in a negative context can be selected depending on the medical situation, identification of patients who will choose the treatment with explicit statistical prediction after an explanation in a negative context is important; personality traits are related to these emotional decisions. Therefore, in the present study, we examined the personality traits associated with choice of treatment with explicit statistical prediction after an explanation in a negative context.Patients and Methods: A total of 147 patients with glaucoma were recruited for this study. The questionnaire booklets used contained positively framed or negatively framed versions of an “Asian disease problem” to enable examination of the influence of the way in which a problem is framed (framing effect) on the participants’ decision-making. The Japanese version of the Ten-Item Personality Inventory was used to estimate the personality traits of the participants.Results: Low conscientiousness was identified as the only variable that was strongly predictive of the choice of treatment with explicit statistical prediction (β = − 0.44, z = 2.19, p = 0.03). In addition, while the association was not statistically significant, low neuroticism was found to be weakly predictive of the choice of uncertain treatment (β = − 0.37, z = 1.73, p = 0.08).Conclusion: In conclusion, we showed that low levels of conscientiousness predict the choice of treatment with explicit statistical prediction (ie, topical treatment) for glaucoma after an explanation in a negative context.Keywords: conscientiousness, neuroticism, glaucoma, big five personality traits
Published: 2023

24. Measurements of protons and charged pions emitted from $\nu_{\mu}$ charged-current interactions on iron at a mean neutrino energy of 1.49$\,$GeV using a nuclear emulsion detector

Author: Oshima, H., Matsuo, T., Ali, A., Aoki, S., Berns, L., Fukuda, T., Hanaoka, Y., Hayato, Y., Hiramoto, A., Ichikawa, A. K., Inamoto, H., Kasumi, A., Kawahara, H., Kikawa, T., Komatani, R., Komatsu, M., Kuretsubo, K., Marushima, T., Matsumoto, H., Mikado, S., Minamino, A., Mizuno, K., Morimoto, Y., Morishima, K., Naganawa, N., Naiki, M., Nakamura, M., Nakamura, Y., Nakano, T., Nakaya, T., Nishio, A., Odagawa, T., Ogawa, S., Rokujo, H., Sato, O., Shibuya, H., Sugimura, K., Suzui, L., Suzuki, Y., Takagi, H., Takahashi, S., Takao, T., Tanihara, Y., Watanabe, M., Yamada, K., Yasutome, K., Yokoyama, M., and Yoshimoto, M.
Subjects: High Energy Physics - Experiment
Abstract: This study conducted an analysis of muons, protons, and charged pions emitted from $\nu_{\mu}$ charged-current interactions on iron using a nuclear emulsion detector. The emulsion detector with a 65$\,$kg iron target was exposed to a neutrino beam corresponding to 4.0$\times$10$^{19}$ protons on target with a mean neutrino energy of 1.49$\,$GeV. The measurements were performed at a momentum threshold of 200 (50)$\,$MeV/$c$ for protons (pions), which are the lowest momentum thresholds attempted up to now. The measured quantities are the multiplicities, emission angles, and momenta of the muons, protons, and charged pions. In addition to these inclusive measurements, exclusive measurements such as the muon-proton emission-angle correlations of specific channels and the opening angle between the protons of CC0$\pi$2$p$ events were performed. The data were compared to Monte Carlo (MC) predictions and some significant differences were observed. The results of the study demonstrate the capability of detailed measurements of neutrino-nucleus interactions using a nuclear emulsion detector to improve neutrino interaction models., Comment: 21 pages, 25 figures
Published: 2022
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25. Differential cross sections and photon beam asymmetries of $\eta$ photoproduction on the proton at $E_\gamma$ = 1.3-2.4 GeV

Author: Hashimoto, T., Nam, T., Muramatsu, N., Ahn, J. K., Chang, W. C., Chen, J. Y., Chu, M. L., Date, S., Gogami, T., Goto, H., Hamano, H., He, Q. H., Hicks, K., Hiraiwa, T., Honda, Y., Hotta, T., Ikuno, H., Inoue, Y., Ishikawa, T., Jaegle, I., Jo, J. M., Kasamatsu, Y., Katsuragawa, H., Kido, S., Kon, Y., Matsumoto, S., Matsumura, Y., Miyabe, M., Mizutani, K., Nakamura, T., Nakano, T., Niiyama, M., Nozawa, Y., Ohashi, Y., Ohnishi, H., Ohta, T., Ozawa, K., Rangacharyulu, C., Ryu, S. Y., Sada, Y., Shibukawa, T., Shimizu, H., Shirai, R., Shiraishi, K., Strokovsky, E. A., Sugaya, Y., Sumihama, M., Suzuki, S., Tanaka, S., Taniguchi, Y., Tokiyasu, A., Tomida, N., Tsuchikawa, Y., Ueda, T., Yamazaki, H., Yamazaki, R., Yanai, Y., Yorita, T., Yoshida, C., and Yosoi, M.
Subjects: Nuclear Experiment
Abstract: We have carried out exclusive measurements for the photoproduction of an $\eta$ meson from a proton target with an egg-shaped calorimeter made of BGO crystals (BGOegg) and forward charged-particle detectors at the SPring-8 LEPS2 beamline. The differential cross sections and photon beam asymmetries of the $\gamma p \to \eta p$ reaction are measured in a center-of-mass energy ($W$) range of $1.82$-$2.32$ GeV and a polar angle range of $-1.0 < \cos{\theta^{\eta}_{\mathrm{c.m.}}} < 0.6$. The reaction is identified by selecting a proton and two $\gamma$'s produced by an $\eta$-meson decay. The kinematic fit method was employed to select the reaction candidate with the confidence level larger than $1$\%. A bump structure at $W$ = $2.0$-$2.3$ GeV in the differential cross section is confirmed at extremely backward $\eta$ polar angles, where the existing data are inconsistent with each other. This bump structure is likely associated with high-spin resonances that couple with $s\bar{s}$ quarks. The results of the photon beam asymmetries in a wide $\eta$ polar angle range are new for the photon beam energies exceeding $2.1$ GeV. These results are not reproduced by the existing partial wave analyses. They provide an additional constraint to nucleon resonance studies at high energies., Comment: 16 pages, 11 figures
Published: 2022
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26. SPring-8 LEPS2 beamline: A facility to produce a multi-GeV photon beam via laser Compton scattering

Author: Muramatsu, N., Yosoi, M., Yorita, T., Ohashi, Y., Ahn, J. K., Ajimura, S., Asano, Y., Chang, W. C., Chen, J. Y., Date, S., Gogami, T., Hamano, H., Hashimoto, T., Hiraiwa, T., Hotta, T., Ishikawa, T., Kasamatsu, Y., Katsuragawa, H., Kobayakawa, R., Kohri, H., Masumoto, S., Matsumura, Y., Miyabe, M., Mizutani, K., Morino, Y., Nakano, T., Nam, T., Niiyama, M., Nozawa, Y., Ohkuma, H., Ohnishi, H., Ohta, T., Oishi, M., Ozawa, K., Ryu, S. Y., Sada, Y., Saito, H., Shibukawa, T., Shimizu, H., Shirai, R., Shoji, M., Sumihama, M., Suzuki, S., Tanaka, S., Taniuchi, Y., Tokiyasu, A. O., Tomida, N., Tsuchikawa, Y., Watanabe, K., Yoon, C. J., and Yoshida, C.
Subjects: Physics - Accelerator Physics, Nuclear Experiment, Physics - Instrumentation and Detectors
Abstract: We have constructed a new laser-Compton-scattering facility, called the LEPS2 beamline, at the 8-GeV electron storage ring, SPring-8. This facility provides a linearly polarized photon beam in a tagged energy range of 1.3--2.4 GeV. Thanks to a small divergence of the low-emittance storage-ring electrons, the tagged photon beam has a size (sigma) suppressed to about 4 mm even after it travels about 130 m to the experimental building that is independent of the storage ring building and contains large detector systems. This beamline is designed to achieve a photon beam intensity higher than that of the first laser-Compton-scattering beamline at SPring-8 by adopting the simultaneous injection of up to four high-power laser beams and increasing a transmittance for the long photon-beam path up to about 77%. The new beamline is under operation for hadron photoproduction experiments.
Published: 2021
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27. Wide angle acceptance and high-speed track recognition in nuclear emulsion

Author: Suzuki, Y., Fukuda, T., Kawahara, H., Komatani, R., Naiki, M., Nakano, T., Odagawa, T., and Yoshimoto, M.
Subjects: Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract: A nuclear emulsion film is a three-dimensional tracking device that is widely used in cosmic-ray and high energy physics experiments. Scanning with a wide angle acceptance is crucial for obtaining track information in emulsion films. This study presents a new method developed for wide angle acceptance and high-speed track recognition of nuclear emulsion films for neutrino-nucleus interaction measurements. The nuclear emulsion technique can be used to measure tracks of charged particles from neutrino interactions with a low momentum threshold. The detection of the particles with a wide angle acceptance is essential for obtaining detailed information on the interactions in the sub- and multi-GeV neutrino energy region. In the new method developed for a neutrino interaction measurement in J-PARC called NINJA, the angle acceptance is covered up to $|\tan\theta_{x(y)}| < 5.0$ (80% of all solid angles) with $150\,\mathrm{m^2/year}$. This method can also be used to improve the angle accuracy and recognition efficiency of the tracks., Comment: 20 pages, 17 figures
Published: 2021
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28. Search for the decay $B_s^0\rightarrow\eta\eta$

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

Author: Hino, Y., Ajimura, S., Cheoun, M. K., Choi, J. H., Dodo, T., Furuta, H., Goh, J., Haga, K., Harada, M., Hasegawa, S., Hiraiwa, T., Hwang, W., Jang, H. I., Jang, J. S., Jeon, H., Jeon, S., Joo, K. K., Jordan, J. R., Jung, D. E., Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B., Kim, S. Y., Kim, W., Kinoshita, H., Konno, T., Lee, C. Y., Lee, D. H., Lee, S., Lim, I. T., Little, C., Marzec, E., Maruyama, T., Masuda, S., Meigo, S., Monjushiro, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Nomachi, M., Pac, M. Y., Park, J. S., Park, R. G., Peeters, S. J. M., Ray, H., Rott, C., Sakai, K., Sakamoto, S., Shima, T., Shin, C. D., Spitz, J., Suekane, F., Sugaya, Y., Suzuya, K., Taira, M., Ujiie, R., Yamaguchi, Y., Yeh, M., Yeo, I. S., Yoo, C., and Yu, I.
Subjects: High Energy Physics - Experiment
Abstract: JSNS$^2$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) is an experiment that is searching for sterile neutrinos via the observation of $\bar{\nu}_{\mu} \to \bar{\nu}_{e}$ appearance oscillations using muon decay-at-rest neutrinos. Before dedicated data taking in the first-half of 2021, we performed a commissioning run for 10 days in June 2020. Using the data obtained in this commissioning run, in this paper, we present an estimate of the correlated background which imitates the $\bar{\nu}_{e}$ signal in a sterile neutrino search. In addition, in order to demonstrate future prospects of the JSNS$^2$ experiment, possible pulse shape discrimination improvements towards reducing cosmic ray induced fast neutron background are described., Comment: 7 pages, 3 figures
Published: 2021
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30. Combined analysis of Belle and Belle II data to determine the CKM angle $ \phi_{3} $ using $B^+ \to D(K_{S}^0 h^- h^+) h^+$ decays

Author: Belle, Collaborations, Belle II, Abudinén, F., Aggarwal, L., Ahmed, H., Aihara, H., Akopov, N., Said, S. Al, Aloisio, A., Ky, N. Anh, Atmacan, H., Aushev, V., Ayad, R., Babu, V., Bacher, S., Baehr, S., Bahinipati, S., Bambade, P., Banerjee, Sw., Bansal, S., Baudot, J., Becker, J., Behera, P. K., Belous, K., Bennett, J. V., Bernlochner, F. U., Bertemes, M., Bertholet, E., Bessner, M., Bettarini, S., Bianchi, F., Bilka, T., Biswas, D., Bobrov, A., Bodrov, D., Bonvicini, G., Borah, J., Bozek, A., Bračko, M., Branchini, P., Briere, R. A., Browder, T. E., Budano, A., Bussino, S., Campajola, M., Cao, L., Casarosa, G., Cecchi, C., Cheema, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Chirapatpimol, K., Cho, H. -E., Cho, S. -J., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Corona, L., Cunliffe, S., Czank, T., Das, S., Dattola, F., De La Cruz-Burelo, E., de Marino, G., Maurya, S. K., De Nardo, G., De Nuccio, M., De Pietro, G., de Sangro, R., Destefanis, M., Dey, S., De Yta-Hernandez, A., Dhamija, R., Di Canto, A., Doležal, Z., Jiménez, I. Domínguez, Dong, T. V., Dorigo, M., Dossett, D., Dubey, S., Dujany, G., Eliachevitch, M., Epifanov, D., Feichtinger, P., Ferlewicz, D., Fillinger, T., Fiore, S., Fodor, A., Forti, F., Fulsom, B. G., Gabrielli, A., Ganiev, E., Garcia-Hernandez, M., Gaur, V., Gaz, A., Giordano, R., Giri, A., Glazov, A., Godang, R., Goldenzweig, P., Golob, B., Gradl, W., Graziani, E., Greenwald, D., Gu, T., Guan, Y., Gudkova, K., Guilliams, J., Hadjivasiliou, C., Halder, S., Hara, T., Hartbrich, O., Hayasaka, K., Hayashii, H., Hazra, S., de la Cruz, I. Heredia, Hershenhorn, A., Higuchi, T., Hill, E. C., Hou, W. -S., Hsu, C. -L., Iijima, T., Inami, K., Ishikawa, A., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jin, Y., Junkerkalefeld, H., Kaliyar, A. B., Kang, K. H., Karl, R., Karyan, G., Kato, Y., Ketter, C., Kiesling, C., Kim, C. -H., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Koga, T., Kohani, S., Korpar, S., Kovalenko, E., Kraetzschmar, T. M. G., Križan, P., Krokovny, P., Kuhr, T., Kumar, J., Kumar, M., Kumar, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lacaprara, S., Lai, Y. -T., La Licata, C., Lanceri, L., Lange, J. S., Leboucher, R., Lee, S. C., Leitl, P., Li, J., Li, S. X., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., Liu, Q. Y., Liventsev, D., Longo, S., Lueck, T., Lyu, C., Maggiora, M., Maiti, R., Maity, S., Manfredi, R., Manoni, E., Marcello, S., Martini, A., Massaccesi, L., Masuda, M., Matsuoka, K., Matvienko, D., McKenna, J. A., Meier, F., Merola, M., Metzner, F., Milesi, M., Miller, C., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Molina-Gonzalez, N., Moser, H. -G., Mueller, F., Murphy, C., Mussa, R., Nakamura, K. R., Nakano, T., Nakao, M., Naruki, M., Narwal, D., Natochii, A., Nayak, L., Nayak, M., Nazaryan, G., Nisar, N. K., Nishida, S., Nishimura, K., Onishchuk, Y., Ono, H., Oskin, P., Pakhlova, G., Paladino, A., Panta, A., Paoloni, E., Parham, K., Park, S. -H., Passeri, A., Pathak, A., Patra, S., Pestotnik, R., Piilonen, L. E., Podobnik, T., Pokharel, S., Polat, L., Praz, C., Prell, S., Prencipe, E., Prim, M. T., Purwar, H., Rabusov, A., Rados, P., Raiz, S., Reiter, S., Remnev, M., Ripp-Baudot, I., Rizzo, G., Rizzuto, L. B., Robertson, S. H., Röhrken, M., Roney, J. M., Rostomyan, A., Rout, N., Sahoo, D., Sanders, D. A., Sandilya, S., Santelj, L., Sato, Y., Savinov, V., Scavino, B., Schnell, G., Schueler, J., Schwartz, A. J., Seino, Y., Selce, A., Senyo, K., Sevior, M. E., Shapkin, M., Sharma, C., Shillington, T., Shwartz, B., Sibidanov, A., Simon, F., Singh, J. B., Soffer, A., Solovieva, E., Spataro, S., Spruck, B., Stefkova, S., Stottler, Z. S., Stroili, R., Sumisawa, K., Sutcliffe, W., Suzuki, S. Y., Tabata, M., Takizawa, M., Tanida, K., Tenchini, F., Tiwary, R., Tonelli, D., Torassa, E., Trabelsi, K., Uchida, M., Ueda, I., Uglov, T., Uno, K., Uno, S., Ushiroda, Y., Vahsen, S. E., van Tonder, R., Varvell, K. E., Vinokurova, A., Vitale, L., Wakeling, H. M., Wang, E., Wang, M. -Z., Wang, X. L., Warburton, A., Watanuki, S., Werbycka, O., Wessel, C., Won, E., Yabsley, B. D., Yan, W., Ye, H., Yoshihara, K., Yusa, Y., Zani, L., Zhai, Y., Zhang, Y., Zhilich, V., Zhou, Q. D., Zhou, X. Y., and Zhukova, V. I.
Subjects: High Energy Physics - Experiment
Abstract: We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle $ \phi_{3} $ (also known as~$\gamma$) using a model-independent Dalitz plot analysis of \linebreak $B^+\to D\left(K_{S}^{0}h^{+}h^{-}\right)h^+$, where $D$ is either a $D^0$ or $\bar{D}{}^0$ meson and $h$ is either a $\pi$ or $K$. This is the first measurement that simultaneously uses Belle and Belle~II data, combining samples corresponding to integrated luminosities of \SI{711}{fb^{-1}} and \SI{128}{fb^{-1}}, respectively. All data were accumulated from energy-asymmetric $e^+e^-$ collisions at a centre-of-mass energy corresponding to the mass of the $\Upsilon(4S)$ resonance. We measure $\phi_3 = \left(78.4 \pm 11.4 \pm 0.5 \pm 1.0 \right)^{\circ}$, where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is from the uncertainties on external measurements of the $D$-decay strong-phase parameters., Comment: 34 pages, 11 figures
Published: 2021
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31. Study of $\chi_{bJ}(nP) \rightarrow \omega \Upsilon(1S)$ at Belle

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

32. Design, Construction, and Test of the Gas Pixel Detectors for the IXPE Mission

Author: Baldini, L., Barbanera, M., Bellazzini, R., Bonino, R., Borotto, F., Brez, A., Caporale, C., Cardelli, C., Castellano, S., Ceccanti, M., Citraro, S., Di Lalla, N., Latronico, L., Lucchesi, L., Magazzù, C., Magazzù, G., Maldera, S., Manfreda, A., Marengo, M., Marrocchesi, A., Mereu, P., Minuti, M., Mosti, F., Nasimi, H., Nuti, A., Oppedisano, C., Orsini, L., Pesce-Rollins, M., Pinchera, M., Profeti, A., Sgrò, C., Spandre, G., Tardiola, M., Zanetti, D., Amici, F., Andersson, H., Attinà, P., Bachetti, M., Baumgartner, W., Brienza, D., Carpentiero, R., Castronuovo, M., Cavalli, L., Cavazzuti, E., Centrone, M., Costa, E., D'Alba, E., D'Amico, F., Del Monte, E., Di Cosimo, S., Di Marco, A., Di Persio, G., Donnarumma, I., Evangelista, Y., Fabiani, S., Ferrazzoli, R., Kitaguchi, T., La Monaca, F., Lefevre, C., Loffredo, P., Lorenzi, P., Mangraviti, E., Matt, G., Meilahti, T., Morbidini, A., Muleri, F., Nakano, T., Negri, B., Nenonen, S., O'Dell, S. L., Perri, M., Piazzolla, R., Pieraccini, S., Pilia, M., Puccetti, S., Ramsey, B. D., Rankin, J., Ratheesh, A., Rubini, A., Santoli, F., Sarra, P., Scalise, E., Sciortino, A., Soffitta, P., Tamagawa, T., Tennant, A. F., Tobia, A., Trois, A., Uchiyama, K., Vimercati, M., Weisskopf, M. C., Xie, F., Zanetti, F., and Zhou, Y.
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena, Physics - Instrumentation and Detectors
Abstract: Due to be launched in late 2021, the Imaging X-Ray Polarimetry Explorer (IXPE) is a NASA Small Explorer mission designed to perform polarization measurements in the 2-8 keV band, complemented with imaging, spectroscopy and timing capabilities. At the heart of the focal plane is a set of three polarization-sensitive Gas Pixel Detectors (GPD), each based on a custom ASIC acting as a charge-collecting anode. In this paper we shall review the design, manufacturing, and test of the IXPE focal-plane detectors, with particular emphasis on the connection between the science drivers, the performance metrics and the operational aspects. We shall present a thorough characterization of the GPDs in terms of effective noise, trigger efficiency, dead time, uniformity of response, and spectral and polarimetric performance. In addition, we shall discuss in detail a number of instrumental effects that are relevant for high-level science analysis -- particularly as far as the response to unpolarized radiation and the stability in time are concerned., Comment: To be published in Astroparticle Physics
Published: 2021
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33. A Calibration Scheme for ITS-90-traceable Oceanographic Thermometers

Author: Baba, S., Saito, I., Yamazawa, K., and Nakano, T.
Published: 2023
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34. The JSNS^2 Detector

Author: Ajimura, S., Botran, M., Choi, J. H., Choi, J. W., Cheoun, M. K., Dodo, T., Furuta, H., Goh, J., Haga, K., Harada, M., Hasegawa, S., Hino, Y., Hiraiwa, T., Jang, H. I., Jang, J. S., Jang, M. C., Jeon, H., Jeon, S., Joo, K. K., Jordan, J. R., Jung, D. E., Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B., Kim, W., Kinoshita, H., Konno, T., Lee, D. H., Lee, S., Lim, I. T., Marzec, E., Maruyama, T., Masuda, S., Meigo, S., Monjushiro, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Nomachi, M., Pac, M. Y., Park, J. S., Peeters, S. J. M., Ray, H., Roellinghoff, G., Rott, C., Sakai, K., Sakamoto, S., Shima, T., Shin, C. D., Spitz, J., Stancu, I., Sugaya, Y., Suekane, F., Suzuya, K., Taira, M., Ujiie, R., Yamaguchi, Y., Yeh, M., Yeo, I. S., Yoo, C., Yu, I., and Zohaib, A.
Subjects: Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract: The JSNS^2 (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for oscillations involving a sterile neutrino in the eV^2 mass-splitting range. The experiment will search for the appearance of electron antineutrinos oscillated from muon antineutrinos. The electron antineutrinos are detected via the inverse beta decay process using a liquid scintillator detector. A 1MW beam of 3 GeV protons incident on a spallation neutron target produces an intense and pulsed neutrino source from pion, muon, and kaon decay at rest. The JSNS^2 detector is located 24 m away from the neutrino source and began operation from June 2020. The detector contains 17 tonnes of gadolinium (Gd) loaded liquid scintillator (LS) in an acrylic vessel, as a neutrino target. It is surrounded by 31 tonnes of unloaded LS in a stainless steel tank. Optical photons produced in LS are viewed by 120 R7081 Hamamatsu 10-inch Photomultiplier Tubes (PMTs). In this paper, we describe the JSNS^2 detector design, construction, and operation., Comment: 41 pages, 29 figures
Published: 2021
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35. Proposal: JSNS$^2$-II

Author: Ajimura, S., Botran, M., Choi, J. H., Choi, J. W., Cheoun, M. K., Dodo, T., Furuta, H., Goh, J., Haga, K., Harada, M., Hasegawa, S., Hino, Y., Hiraiwa, T., Jang, H. I., Jang, J. S., Jang, M. C., Jeon, H., Jeon, S., Joo, K. K., Jordan, J. R., EJung, D., Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B., Kim, S. Y., Kim, W., Konno, T., Kinoshita, H., Lee, D. H., Lee, S., Lim, I. T., Marzec, E., Maruyama, T., Masuda, S., Meigo, S., Monjushiro, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Nomachi, M., Pac, M. Y., Park, J. S., Peeters, S. J. M., Ray, H., Roellinghoff, G., Rott, C., Sakai, K., Sakamoto, S., Shima, T., Shin, C. D., Spitz, J., Stancu, I., Sugaya, Y., Suekane, F., Suzuya, K., Taira, M., Ujiie, R., Yamaguchi, Y., Yeh, M., Yeo, I. S., Yoo, C., Yu, I., and Zohaib, A.
Subjects: High Energy Physics - Experiment
Abstract: This article describes the goal and expected sensitivity of the JSNS$^2$-II experiment at J-PARC Materials and Life Science Experimental Facility (MLF). The JSNS$^2$-II experiment is the second phase of the JSNS$^2$ experiment (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) with two detectors which are located in 24 m (an existing detector) and 48 m (new one) baselines to improve the sensitivity of the search for sterile neutrinos, especially in the low $\Delta m^2$ region, which has been indicated by the global fit of the appearance mode. The new second detector has a similar structure as the existing JSNS$^2$ detector, which is already working. To compensate for the reduction of the neutrino flux due to the distance from the mercury target, the target mass of the Gd-loaded liquid scintillator which is the Linear AlkylBenzene (LAB) based liquid scintillator inside the acrylic vessel is 35 tons. To keep the same photo-coverage of the detector as the first detector, we will surround the acrylic vessel with 240 PMTs. With this experimental setup and 5 years (times 1 MW beam power) exposure, the sensitivity of the JSNS$^2$-II is significantly improved compared to the current JSNS$^2$, especially in the low $\Delta m^2$ oscillation parameter region. The JSNS$^2$-II can also confirm or refute the most of the oscillation parameters' space preferred by the previous experiments with 3 sigma C.L.. Considering these situations and world wide status of the sterile neutrino searches, we are eager to start the data taking with the two detector configuration from 2023. The fund to build the second detector was already secured.
Published: 2020

36. First measurement using a nuclear emulsion detector of the $\nu_{\mu}$ charged-current cross section on iron around the 1$\,$GeV energy region

Author: Oshima, H., Matsuo, T., Ali, A., Aoki, S., Berns, L., Fukuda, T., Hanaoka, Y., Hayato, Y., Hiramoto, A., Ichikawa, A. K., Kawahara, H., Kikawa, T., Komatani, R., Komatsu, M., Kuretsubo, K., Marushima, T., Matsumoto, H., Mikado, S., Minamino, A., Mizuno, K., Morimoto, Y., Morishima, K., Naganawa, N., Naiki, M., Nakamura, M., Nakamura, Y., Nakano, N., Nakano, T., Nakaya, T., Nishio, A., Odagawa, T., Ogawa, S., Rokujo, H., Sato, O., Shibuya, H., Sugimura, K., Suzui, L., Suzuki, Y., Takagi, H., Takahashi, S., Takao, T., Tanihara, Y., Watanabe, R., Yamada, K., Yasutome, K., and Yokoyama, M.
Subjects: High Energy Physics - Experiment
Abstract: We have carried out $\nu_{\mu}$ charged-current interaction measurement on iron using an emulsion detector exposed to the T2K neutrino beam in the J-PARC neutrino facility. The data samples correspond to 4.0$\times$10$^{19}$ protons on target, and the neutrino mean energy is 1.49$\,$GeV. The emulsion detector is suitable for precision measurements of charged particles produced in neutrino-iron interactions with a low momentum threshold thanks to thin-layered structure and sub-$\mu$m spatial resolution. The charged particles are successfully detected, and their multiplicities are measured using the emulsion detector. The cross section was measured to be $\sigma^{\mathrm{Fe}}_{\mathrm{CC}} = (1.28 \pm 0.11({\mathrm{stat.}})^{+0.12}_{-0.11}({\mathrm{syst.}})) \times 10^{-38} \, {\mathrm{cm}}^{2}/{\mathrm{nucleon}}$. The cross section in a limited kinematic phase space of induced muons, $\theta_{\mu} < 45^{\circ}$ and $p_{\mu} > 400 \, {\rm MeV}/c$, on iron was $\sigma^{\mathrm{Fe}}_{\mathrm{CC \hspace{1mm} phase \hspace{0.5mm} space}} = (0.84 \pm 0.07({\mathrm{stat.}})^{+0.07}_{-0.06}({\mathrm{syst.}})) \times 10^{-38} \, {\mathrm{cm}}^{2}/{\mathrm{nucleon}}$. The cross-section results are consistent with previous values obtained via different techniques using the same beamline, and they are well reproduced by current neutrino interaction models. These results demonstrate the capability of the detector towards the detailed measurements of the neutrino-nucleus interactions around the 1$\,$GeV energy region., Comment: 27 pages, 17 figures
Published: 2020
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37. Sensitivity of the SHiP experiment to dark photons decaying to a pair of charged particles

Author: SHiP Collaboration, Ahdida, C., Akmete, A., Albanese, R., Alexandrov, A., Anokhina, A., Aoki, S., Arduini, G., Atkin, E., Azorskiy, N., Back, J. J., Bagulya, A., Santos, F. Baaltasar Dos, Baranov, A., Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, V., Bencivenni, G., Berdnikov, A. Y., Berdnikov, Y. A., Bertani, M., Betancourt, C., Bezshyiko, I., Bezshyyko, O., Bick, D., Bieschke, S., Blanco, A., Boehm, J., Bogomilov, M., Boiarska, I., Bondarenko, K., Bonivento, W. M., Borburgh, J., Boyarsky, A., Brenner, R., Breton, D., Büscher, V., Buonaura, A., Buontempo, S., Cadeddu, S., Calcaterra, A., Calviani, M., Campanelli, M., Casolino, M., Charitonidis, N., Chau, P., Chauveau, J., Chepurnov, A., Chernyavskiy, M., Choi, K. -Y., Chumakov, A., Ciambrone, P., Cicero, V., Congedo, L., Cornelis, K., Cristinziani, M., Crupano, A., Dallavalle, G. M., Datwyler, A., D'Ambrosio, N., D'Appollonio, G., de Asmundis, R., Saraiva, J. De Carvalho, De Lellis, G., de Magistris, M., De Roeck, A., De Serio, M., De Simone, D., Dedenko, L., Dergachev, P., Di Crescenzo, A., Di Giulio, L., Di Marco, N., Dib, C., Dijkstra, H., Dmitrenko, V., Dougherty, L. A., Dolmatov, A., Domenici, D., Donskov, S., Drohan, V., Dubreuil, A., Durhan, O., Ehlert, M., Elikkaya, E., Enik, T., Etenko, A., Fabbri, F., Fedin, O., Fedotovs, F., Felici, G., Ferrillo, M., Ferro-Luzzi, M., Filippov, K., Fini, R. A., Fonte, P., Franco, C., Fraser, M., Fresa, R., Froeschl, R., Fukuda, T., Galati, G., Gall, J., Gatignon, L., Gavrilov, G., Gentile, V., Goddard, B., Golinka-Bezshyyko, L., Golovatiuk, A., Golovtsov, V., Golubkov, D., Golutvin, A., Gorbounov, P., Gorbunov, D., Gorbunov, S., Gorkavenko, V., Gorshenkov, M., Grachev, V., Grandchamp, A. L., Graverini, E., Grenard, J. -L., Grenier, D., Grichine, V., Gruzinskii, N., Guler, A. M., Guz, Yu., Haefeli, G. J., Hagner, C., Hakobyan, H., Harris, I. W., van Herwijnen, E., Hessler, C., Hollnagel, A., Hosseini, B., Hushchyn, M., Iaselli, G., Iuliano, A., Jacobsson, R., Joković, D., Jonker, M., Kadenko, I., Kain, V., Kaiser, B., Kamiscioglu, C., Karpenkov, D., Kershaw, K., Khabibullin, M., Khalikov, E., Khaustov, G., Khoriauli, G., Khotyantsev, A., Kim, Y. G., Kim, V., Kitagawa, N., Ko, J. -W., Kodama, K., Kolesnikov, A., Kolev, D. I., Kolosov, V., Komatsu, M., Kono, A., Konovalova, N., Kormannshaus, S., Korol, I., Korol'ko, I., Korzenev, A., Kostyukhin, V., Platia, E. Koukovini, Kovalenko, S., Krasilnikova, I., Kudenko, Y., Kurbatov, E., Kurbatov, P., Kurochka, V., Kuznetsova, E., Lacker, H. M., Lamont, M., Lanfranchi, G., Lantwin, O., Lauria, A., Lee, K. S., Lee, K. Y., Lévy, J. -M., Loschiavo, V. P., Lopes, L., Sola, E. Lopez, Lyubovitskij, V., Maalmi, J., Magnan, A. -M., Maleev, V., Malinin, A., Manabe, Y., Managadze, A. K., Manfredi, M., Marsh, S., Marshall, A. M., Mefodev, A., Mermod, P., Miano, A., Mikado, S., Mikhaylov, Yu., Milstead, D. A., Mineev, O., Montanari, A., Montesi, M. C., Morishima, K., Movchan, S., Muttoni, Y., Naganawa, N., Nakamura, M., Nakano, T., Nasybulin, S., Ninin, P., Nishio, A., Novikov, A., Obinyakov, B., Ogawa, S., Okateva, N., Opitz, B., Osborne, J., Ovchynnikov, M., Owtscharenko, N., Owen, P. H., Pacholek, P., Paoloni, A., Park, B. D., Pastore, A., Patel, M., Pereyma, D., Perillo-Marcone, A., Petkov, G. L., Petridis, K., Petrov, A., Podgrudkov, D., Poliakov, V., Polukhina, N., Prieto, J. Prieto, Prokudin, M., Prota, A., Quercia, A., Rademakers, A., Rakai, A., Ratnikov, F., Rawlings, T., Redi, F., Ricciardi, S., Rinaldesi, M., Rodin, Volodymyr, Rodin, Viktor, Robbe, P., Cavalcante, A. B. Rodrigues, Roganova, T., Rokujo, H., Rosa, G., Rovelli, T., Ruchayskiy, O., Ruf, T., Samoylenko, V., Samsonov, V., Galan, F. Sanchez, Diaz, P. Santos, Ull, A. Sanz, Saputi, A., Sato, O., Savchenko, E. S., Schliwinski, J. S., Schmidt-Parzefall, W., Serra, N., Sgobba, S., Shadura, O., Shakin, A., Shaposhnikov, M., Shatalov, P., Shchedrina, T., Shchutska, L., Shevchenko, V., Shibuya, H., Shirobokov, S., Shustov, A., Silverstein, S. B., Simone, S., Simoniello, R., Skorokhvatov, M., Smirnov, S., Sohn, J. Y., Sokolenko, A., Solodko, E., Starkov, N., Stoel, L., Stramaglia, M. E., Sukhonos, D., Suzuki, Y., Takahashi, S., Tastet, J. L., Teterin, P., Naing, S. Than, Timiryasov, I., Tioukov, V., Tommasini, D., Torii, M., Tosi, N., Treille, D., Tsenov, R., Ulin, S., Ursov, E., Ustyuzhanin, A., Uteshev, Z., Uvarov, L., Vankova-Kirilova, G., Vannucci, F., Venturi, V., Vilchinski, S., Vincke, Heinz, Vincke, Helmut, Visone, C., Vlasik, K., Volkov, A., Voronkov, R., van Waasen, S., Wanke, R., Wertelaers, P., Williams, O., Woo, J. -K., Wurm, M., Xella, S., Yilmaz, D., Yilmazer, A. U., Yoon, C. S., Zaytsev, Yu., Zelenov, A., and Zimmerman, J.
Subjects: High Energy Physics - Experiment
Abstract: Dark photons are hypothetical massive vector particles that could mix with ordinary photons. The simplest theoretical model is fully characterised by only two parameters: the mass of the dark photon m$_{\gamma^{\mathrm{D}}}$ and its mixing parameter with the photon, $\varepsilon$. The sensitivity of the SHiP detector is reviewed for dark photons in the mass range between 0.002 and 10 GeV. Different production mechanisms are simulated, with the dark photons decaying to pairs of visible fermions, including both leptons and quarks. Exclusion contours are presented and compared with those of past experiments. The SHiP detector is expected to have a unique sensitivity for m$_{\gamma^{\mathrm{D}}}$ ranging between 0.8 and 3.3$^{+0.2}_{-0.5}$ GeV, and $\varepsilon^2$ ranging between $10^{-11}$ and $10^{-17}$.
Published: 2020
Full Text: View/download PDF

38. Search for the Decay $B_s^0 \rightarrow \eta^\prime \eta$

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

39. Safe Removal of Sticky Silicone Oil Using Perfluorocarbon Liquid Injection and Emulsification with a Fragmatome

Author: Takashina H, Watanabe A, and Nakano T
Subjects: silicone oil, perfluorocarbon, fragmatome, emulsification, vitrectomy, Ophthalmology, RE1-994
Abstract: Hirotsugu Takashina,1 Akira Watanabe,2 Tadashi Nakano2 1Department of Ophthalmology, Tokyo Rosai Hospital, Tokyo, Japan; 2Department of Ophthalmology, The Jikei University School of Medicine, Tokyo, JapanCorrespondence: Hirotsugu Takashina, Department of Ophthalmology, Tokyo Rosai Hospital, 4-13-21 Omori-minami Ota-ku, Tokyo, 143-0013, Japan, Tel +81-3-3742-7301 (ext. 8116), Fax +81-3-3744-9310, Email two-shina@s7.dion.ne.jpPurpose: We examine the safe removal of a sticky silicone oil (SO) with an inconspicuous perfluorocarbon liquid (PFCL) layer.Methods: In the first experiment, we injected PFCL into the SO bubble on the bottom of a transparent container or into the chili oil layer of an immiscible droplet composed of PFCL and chili oil on the posterior retina of a vitrectomized pig eye, in order to release the SO bubble or the chili oil layer from the downward adhesion. In the second experiment, we sucked out the SO layer of an immiscible droplet composed of PFCL and SO on the bottom of a transparent container or on the posterior retina of a vitrectomized pig eye using a fragmatome.Results: In the first experiment, the PFCL injection caused the SO bubble to move from the bottom of the transparent container and the chili oil to move from the posterior retina of the pig eye. In the second experiment, when the suction pressure was high, this made it easy and possible to remove the SO layer in the transparent container or the vitrectomized pig eye when emulsification was done by a fragmatome.Conclusion: Moving the SO layer of a sticky SO from the posterior retina after a PFCL injection followed by sucking out of the relocated SO layer using emulsification and high suction pressure through the utilization of a fragmatome can safely remove sticky SO with an inconspicuous PFCL layer.Keywords: silicone oil, perfluorocarbon, fragmatome, emulsification, vitrectomy
Published: 2023

40. Measurement of Branching Fractions of $\Lambda_{c}^{+} \rightarrow \eta\Lambda\pi^{+}$, $\eta \Sigma^{0} \pi^{+}$, $\Lambda(1670) \pi^{+}$, and $\eta \Sigma(1385)^{+}$

Author: Lee, J. Y., Tanida, K., Kato, Y., Kim, S. K., Yang, S. B., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Cervenkov, D., Chang, M. -C., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Villanueva, M. Hernandez, Hsu, C. -L., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jang, E. -J., Jia, S., Jin, Y., Joo, C. W., Joo, K. K., Kang, K. H., Karyan, G., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. -H., Kim, K. T., Kim, S. H., Kim, Y. J., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumara, K., Kuzmin, A., Kwon, Y. -J., Lee, S. C., Li, C. H., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Lieret, K., Liptak, Z., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Mizuk, R., Mohanty, G. B., Moon, T. J., Mori, T., Mussa, R., Nakano, T., Nakao, M., Natochii, A., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Olsen, S. L., Ono, H., Onuki, Y., Oskin, P., Pakhlov, P., Pakhlova, G., Pardi, S., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Rostomyan, A., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Schwartz, A. J., Seidl, R., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shebalin, V., Shiu, J. -G., Shwartz, B., Sokolov, A., Solovieva, E., Stanič, S., Starič, M., Stottler, Z. S., Sumihama, M., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tenchini, F., Uchida, M., Uglov, T., Uno, S., Usov, Y., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Watanabe, M., Watanuki, S., Wehle, S., Wiechczynski, J., Xu, X., Yabsley, B. D., Yan, W., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov., V.
Subjects: High Energy Physics - Experiment
Abstract: We report branching fraction measurements of four decay modes of the $\Lambda_{c}^{+}$ baryon, each of which includes an $\eta$ meson and a $\Lambda$ baryon in the final state, and all of which are measured relative to the $\Lambda_{c}^{+} \rightarrow p K^{-} pi^{+}$ decay mode. The results are based on a $980~\mathrm{fb^{-1}}$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. Two decays, $\eta \Sigma^{0} \pi^{+}$ and $\Lambda(1670) \pi^{+}$, are observed for the first time, while the measurements of the other decay modes, $\Lambda_{c}^{+} \rightarrow \eta\Lambda\pi^{+}$ and $\eta\Sigma(1385)^{+}$, are more precise than those made previously. We obtain $\mathcal{B}(\Lambda_{c}^{+} \rightarrow \eta \Lambda \pi^{+})/\mathcal{B}(\Lambda_{c}^{+} \rightarrow p K^{-} \pi^{+})$ = $0.293 \pm 0.003 \pm 0.014$, $\mathcal{B}(\Lambda_{c}^{+} \rightarrow \eta \Sigma^{0} \pi^{+})/\mathcal{B}(\Lambda_{c}^{+} \rightarrow p K^{-} \pi^{+})$ = $0.120 \pm 0.006 \pm 0.006$, $\mathcal{B}(\Lambda_{c}^{+} \rightarrow \Lambda(1670) \pi^{+}) \times \mathcal{B}(\Lambda(1670) \rightarrow \eta \Lambda)/\mathcal{B}(\Lambda_{c}^{+} \rightarrow p K^{-} \pi^{+})$ = $(5.54 \pm 0.29 \pm 0.73 ) \times 10^{-2}$, and $\mathcal{B}(\Lambda_{c}^{+} \rightarrow \eta \Sigma(1385)^{+})/\mathcal{B}(\Lambda_{c}^{+} \rightarrow p K^{-} \pi^{+})$ = $0.192 \pm 0.006 \pm 0.016$. The mass and width of the $\Lambda(1670)$ are also precisely determined to be $1674.3 \pm 0.8 \pm 4.9~{\rm MeV}/c^{2}$ and $36.1 \pm 2.4 \pm 4.8~{\rm MeV}$, respectively, where the uncertainties are statistical and systematic, respectively., Comment: To be submitted to Physical Review D
Published: 2020
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41. Measurement of two-particle correlations in hadronic $e^{+}e^{-}$ collisions at Belle

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

42. First measurement of $\bar{\nu}_{\mu}$ and $\nu_{\mu}$ charged-current inclusive interactions on water using a nuclear emulsion detector

Author: Hiramoto, A., Suzuki, Y., Ali, A., Aoki, S., Berns, L., Fukuda, T., Hanaoka, Y., Hayato, Y., Ichikawa, A. K., Kawahara, H., Kikawa, T., Koga, T., Komatani, R., Komatsu, M., Kosakai, Y., Matsuo, T., Mikado, S., Minamino, A., Mizuno, K., Morimoto, Y., Morishima, K., Naganawa, N., Naiki, M., Nakamura, M., Nakamura, Y., Nakano, N., Nakano, T., Nakaya, T., Nishio, A., Odagawa, T., Ogawa, S., Oshima, H., Rokujo, H., Sanjana, I., Sato, O., Shibuya, H., Sugimura, K., Suzui, L., Takagi, H., Takao, T., Tanihara, Y., Yasutome, K., and Yokoyama, M.
Subjects: High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract: This paper reports the track multiplicity and kinematics of muons, charged pions, and protons from charged-current inclusive $\bar{\nu}_{\mu}$ and $\nu_{\mu}$ interactions on a water target, measured using a nuclear emulsion detector in the NINJA experiment. A 3-kg water target was exposed to the T2K antineutrino-enhanced beam with a mean energy of 1.3 GeV. Owing to the high-granularity of the nuclear emulsion, protons with momenta down to 200 MeV/$c$ from the neutrino-water interactions were detected. We find good agreement between the observed data and model predictions for all kinematic distributions other than the number of charged pions. These results demonstrate the capability of measurements with nuclear emulsion to improve neutrino interaction models., Comment: 22 pages, 20 figures
Published: 2020
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43. First Determination of the Spin and Parity of a Charmed-Strange Baryon, $\Xi_{c}(2970)^+$

Author: Belle Collaboration, Moon, T. J., Tanida, K., Kato, Y., Kim, S. K., Adachi, I., Ahn, J. K., Aihara, H., Said, S. Al, Asner, D. M., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bahinipati, S., Behera, P., Beleño, C., Bennett, J., Bessner, M., Bhuyan, B., Bilka, T., Biswal, J., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M. -C., Chang, P., Chen, A., Cheon, B. G., Chilikin, K., Cho, K., Choi, S. -K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Dash, N., De Nardo, G., Di Capua, F., Doležal, Z., Dong, T. V., Dossett, D., Dubey, S., Eidelman, S., Epifanov, D., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Gabyshev, N., Garmash, A., Giri, A., Goldenzweig, P., Golob, B., Hadjivasiliou, C., Hartbrich, O., Hayasaka, K., Hayashii, H., Hedges, M. T., Hou, W. -S., Hsu, C. -L., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jia, S., Jin, Y., Joo, K. K., Kang, K. H., Karyan, G., Kawasaki, T., Kichimi, H., Kiesling, C., Kim, B. H., Kim, D. Y., Kim, K. T., Kim, S. H., Kim, Y. J., Kim, Y. -K., Kimmel, T. D., Kinoshita, K., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kumar, R., Kumara, K., Kuzmin, A., Lee, I. S., Lee, J. Y., Lee, S. C., Li, L. K., Li, Y. B., Gioi, L. Li, Libby, J., Liptak, Z., Liventsev, D., Luo, T., MacQueen, C., Masuda, M., Matsuda, T., Matvienko, D., Merola, M., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Mohanty, S., Mori, T., Mussa, R., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, M., Niiyama, M., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Pakhlov, P., Pakhlova, G., Pardi, S., Park, H., Park, S. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Popov, V., Prencipe, E., Prim, M. T., Ritter, M., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Sangal, A., Santelj, L., Savinov, V., Schnell, G., Schueler, J., Schwanda, C., Seidl, R., Seino, Y., Senyo, K., Sevior, M. E., Shapkin, M., Shen, C. P., Shiu, J. -G., Shwartz, B., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sumisawa, K., Sumiyoshi, T., Sutcliffe, W., Takizawa, M., Tamponi, U., Tenchini, F., Trabelsi, K., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Vahsen, S. E., Van Tonder, R., Varner, G., Vinokurova, A., Vorobyev, V., Vossen, A., Wang, C. H., Wang, E., Wang, M. -Z., Wang, P., Wehle, S., Wiechczynski, J., Xu, X., Yabsley, B. D., Yang, S. B., Ye, H., Yelton, J., Yin, J. H., Yuan, C. Z., Zhang, Z. P., Zhilich, V., Zhukova, V., and Zhulanov, V.
Subjects: High Energy Physics - Experiment
Abstract: We report results from a study of the spin and parity of $\Xi_{c}(2970)^+$ using a $980~\mathrm{fb^{-1}}$ data sample collected by the Belle detector at the KEKB asymmetric-energy $e^{+}e^{-}$ collider. The decay angle distributions in the chain $\Xi_{c}(2970)^+ \to \Xi_c(2645)^{0}\pi^{+} \to \Xi_c^{+}\pi^{-}\pi^{+}$ are analyzed to determine the spin of this charmed-strange baryon. The angular distributions strongly favor the $\Xi_{c}(2970)^+$ spin $J =1/2$ over $3/2$ or $5/2$, under an assumption that the lowest partial wave dominates in the decay. We also measure the ratio of $\Xi_{c}(2970)^+$ decay branching fractions $R={\mathcal{B}[ \Xi_{c}(2970)^+ \to \Xi_c(2645)^{0}\pi^{+} ]} / { \mathcal{B}[ \Xi_{c}(2970)^+ \to \Xi_c^{\prime0}\pi^{+} ]} =1.67 \pm 0.29\mathrm{(stat.)}^{ +0.15}_{ -0.09}\mathrm{(syst.)} \pm 0.25\mathrm{(IS)}$, where the last uncertainty is due to possible isospin-symmetry-breaking effects. This $R$ value favors the spin-parity $J^P=1/2^+$ with the spin of the light-quark degrees of freedom $s_{l}=0$. This is the first determination of the spin and parity of a charmed-strange baryon., Comment: To be submitted to Physical Review Letters
Published: 2020
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44. The JSNS$^{2}$ data acquisition system

Author: Park, J. S., Ajimura, S., Botran, M., Cheoun, M. K., Choi, J. H., Dodo, T., Furuta, H., Gwak, P., Harada, M., Hasegawa, S., Hino, Y., Hiraiwa, T., Jang, H. I., Jang, J. S., Jang, M., Jeon, H., Jeon, S., Joo, K. K., Jordan, J. R., Jung, D. E., Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B., Kim, S. Y., Kim, W., Konno, T., Kwon, E., Lee, D. H., Lim, I. T., Maruyama, T., Marzec, E., Meigo, S., Monjushiro, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Nomachi, M., Pac, M. Y., Peeters, S. J. M., Ray, H., Rott, C., Sakai, K., Sakamoto, S., Seo, H., Seo, J. H., Shima, T., Shin, C. D., Spitz, J., Stancu, I., Suekane, F., Sugaya, Y., Suzuya, K., Taira, M., Ujiie, R., Yeh, M., Yu, I., and Zohaib, A.
Subjects: Physics - Instrumentation and Detectors, High Energy Physics - Experiment
Abstract: The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24 m short baseline at J-PARC. The JSNS$^{2}$ inner detector is filled with 17 tons of gadolinium(Gd)-loaded liquid scintillator (LS) with an additional 31 tons of unloaded LS in the intermediate $\gamma$-catcher and an optically separated outer veto volumes. A total of 120 10-inch photomultiplier tubes observe the scintillating optical photons and each analog waveform is stored with the flash analog-to-digital converters. We present details of the data acquisition, processing, and data quality monitoring system. We also present two different trigger logics which are developed for the beam and self-trigger., Comment: 11 pages, 8 figures
Published: 2020

45. Search for $\eta'$ bound nuclei in the $^{12}{\rm C}(\gamma,p)$ reaction with simultaneous detection of decay products

Author: Tomida, N., Muramatsu, N., Niiyama, M., Ahn, J. K., Chang, W. C., Chen, J. Y., Chu, M. L., Daté, S., Gogami, T., Goto, H., Hamano, H., Hashimoto, T., He, Q. H., Hicks, K., Hiraiwa, T., Honda, Y., Hotta, T., Ikuno, H., Inoue, Y., Ishikawa, T., Jaegle, I., Jo, J. M., Kasamatsu, Y., Katsuragawa, H., Kido, S., Kon, Y., Maruyama, T., Masumoto, S., Matsumura, Y., Miyabe, M., Mizutani, K., Nagahiro, H., Nakamura, T., Nakano, T., Nam, T., Ngan, T. N. T., Nozawa, Y., Ohashi, Y., Ohnishi, H., Ohta, T., Ozawa, K., Rangacharyulu, C., Ryu, S. Y., Sada, Y., Sasagawa, M., Shibukawa, T., Shimizu, H., Shirai, R., Shiraishi, K., Strokovsky, E. A., Sugaya, Y., Sumihama, M., Suzuki, S., Tanaka, S., Tokiyasu, A., Tsuchikawa, Y., Ueda, T., Yamazaki, H., Yamazaki, R., Yanai, Y., Yorita, T., Yoshida, C., and Yosoi, M.
Subjects: Nuclear Experiment
Abstract: We measured missing mass spectrum of the $^{12}{\rm C}(\gamma,p)$ reaction for the first time in coincidence with potential decay products from $\eta'$ bound nuclei. We tagged an ($\eta+p$) pair associated with the $\eta'N\to\eta N$ process in a nucleus. After applying kinematical selections to reduce backgrounds, no signal events were observed in the bound-state region. An upper limit of the signal cross section in the opening angle $\cos\theta^{\eta p}_{lab}<-0.9$ was obtained to be 2.2 nb/sr at the 90$\%$ confidence level. It is compared with theoretical cross sections, whose normalization ambiguity is suppressed by measuring a quasifree $\eta'$ production rate. Our results indicate a small branching fraction of the $\eta'N\to\eta N$ process and/or a shallow $\eta'$-nucleus potential., Comment: 7 pages, 4 figures
Published: 2020
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46. Performance of PMTs for the JSNS2 experiment

Author: Park, J. S., Furuta, H., Maruyama, T., Monjushiro, S., Nishikawa, K., Taira, M., Jang, J. S., Joo, K. K., Kim, J. Y., Lim, I. T., Moon, D. H., Seo, J. H., Shin, C. D., Zohaib, A., Gwak, P., Jang, M., Ajimura, S., Hiraiwa, T., Nakano, T., Nomachi, M., Shima, T., Sugaya, Y., Cheoun, M. K., Choi, J. H., Pac, M. Y., Dodo, T., Hino, Y., Suekane, F., Ujiie, R., Harada, M., Hasegawa, S., Kasugai, Y., Meigo, S., Sakai, K., Sakamoto, S., Suzuya, K., Jordan, J. R., Spitz, J., Marzec, E., Botran, M., Kawasaki, T., Konno, T., Jang, H. I., Kang, S. K., Kim, E. J., Seo, H., Kim, S. Y., Kim, W., Niiyama, M., Peeters, S. J. M., Ray, H., Rott, C., Yu, I., Jeon, H., Jeon, S., Jung, D. E., Kim, S. B., Kwon, E., Lee, D. H., Stancu, I., and Yeh, M.
Subjects: Physics - Instrumentation and Detectors
Abstract: The JSNS$^{2}$ (J-PARC Sterile Neutrino Search at J-PARC Spallation Neutron Source) experiment aims to search for neutrino oscillations over a 24\,m short baseline at J-PARC. The JSNS$^{2}$ inner detector is filled with 17 tons of gadolinium-loaded liquid scintillator (LS) and both the intermediate $\gamma$-catcher and the optically separated outer veto are filled with un-loaded LS. Optical photons from scintillation are observed by 120 Photomultiplier Tubes (PMTs). A total of 130 PMTs for the JSNS2 experiment were both donated by other experiments and purchased from Hamamatsu. Donated PMTs were purchased around 10 years ago, therefore JSNS$^{2}$ did pre-calibration of the PMTs including the purchased PMTs. 123 PMTs demonstrated acceptable performance for the JSNS$^{2}$ experiment, and 120 PMTs were installed in the detector.
Published: 2020
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47. Slow control and monitoring system at the JSNS$^{2}$

Author: Park, J. S., Ajimura, S., Botran, M., Choi, J. H., Choi, J. W., Cheoun, M. K., Dodo, T., Furuta, H., Goh, J., Harada, M., Hasegawa, S., Hino, Y., Hiraiwa, T., Jang, H. I., Jang, J. S., Jang, M. C., Jeon, H., Jeon, S., Joo, K. K., Jordan, J. R., Jung, D. E, Kang, S. K., Kasugai, Y., Kawasaki, T., Kim, E. J., Kim, J. Y., Kim, S. B., Kim, W., Konno, T., Lee, D. H., Lee, S., Lim, I. T., Marzec, E., Maruyama, T., Meigo, S., Monjushiro, S., Moon, D. H., Nakano, T., Niiyama, M., Nishikawa, K., Nomachi, M., Pac, M. Y., Peeters, S. J. M., Ray, H., Roellingho, G., Rott, C., Sakai, K., Sakamoto, S., Shima, T., Shin, C. D., Spitz, J., Stancu, I., Sugaya, Y., Suekane, F., Suzuya, K., Taira, M., Ujiie, R., Yeh, M., Yeo, I. S., Yoo, C., Yu, I., and Zohaib, A.
Subjects: Physics - Instrumentation and Detectors
Abstract: The JSNS$^2$ experiment is aimed to search for sterile neutrino oscillations using a neutrino beam from muon decays at rest. The JSNS$^2$ detector contains 17 tons of 0.1\% gadolinium (Gd) loaded liquid scintillator (LS) as a neutrino target. Detector construction was completed in the spring of 2020. A slow control and monitoring system (SCMS) was implemented for reliable control and quick monitoring of the detector operational status and environmental conditions. It issues an alarm if any of the monitored parameters exceed a preset acceptable range. The SCMS monitors the high voltage (HV) of the photomultiplier tubes (PMTs), the LS level in the detector, possible LS overflow and leakage, the temperature and air pressure in the detector, the humidity of the experimental hall, and the LS flow rate during filling and extraction. An initial 10 days of data-taking with a neutrino beam was done following a successful commissioning of the detector and SCMS in June 2020. In this paper, we present a description of the assembly and installation of the SCMS and its performance., Comment: 12 pages, 11 figures
Published: 2020

48. Measurement of the e+e−→Bs0B¯s0XDs+ cross section in the energy range from 10.63 to 11.02 GeV using inclusive Bs0B¯s0XDs+ and D0 production

Author: Zhukova, V., Mizuk, R., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Banerjee, Sw., Bauer, M., Behera, P., Belous, K., Bennett, J., Bernlochner, F., Bessner, M., Bilka, T., Biswas, D., Bobrov, A., Bodrov, D., Bondar, A., Borah, J., Bozek, A., Bračko, M., Branchini, P., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, M.-C., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, S.-K., Choi, Y., Choudhury, S., Cinabro, D., Das, S., De Nardo, G., De Pietro, G., Dhamija, R., Di Capua, F., Dong, T. V., Dubey, S., Ecker, P., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Gu, T., Gudkova, K., Hadjivasiliou, C., Hara, T., Hayasaka, K., Hazra, S., Hedges, M. T., Herrmann, D., Hou, W.-S., Hsu, C.-L., Inami, K., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Iwasaki, Y., Jacobs, W. W., Jang, E.-J., Jia, S., Jin, Y., Joo, K. K., Kaliyar, A. B., Kawasaki, T., Kiesling, C., Kim, C. H., Kim, D. Y., Kim, K.-H., Kim, Y.-K., Kinoshita, K., Kodyš, P., Korobov, A., Korpar, S., Kovalenko, E., Križan, P., Krokovny, P., Kumar, M., Kumar, R., Kuzmin, A., Kwon, Y.-J., Lai, Y.-T., Lam, T., Laurenza, M., Lee, S. C., Levit, D., Li, L. K., Libby, J., Lieret, K., Liventsev, D., Ma, Y., Masuda, M., Matsuda, T., Maurya, S. K., Meier, F., Merola, M., Metzner, F., Miyabayashi, K., Mohanty, G. B., Nakamura, I., Nakano, T., Nakao, M., Natkaniec, Z., Natochii, A., Nayak, L., Nisar, N. K., Nishida, S., Ogawa, K., Ogawa, S., Ono, H., Oskin, P., Pakhlov, P., Pakhlova, G., Pang, T., Pardi, S., Park, H., Park, J., Park, S.-H., Passeri, A., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Rout, N., Russo, G., Sahoo, D., Sakai, Y., Sandilya, S., Santelj, L., Savinov, V., Schnell, G., Schwanda, C., Schwartz, A. J., Seino, Y., Senyo, K., Shan, W., Shapkin, M., Sharma, C., Shiu, J.-G., Sokolov, A., Solovieva, E., Starič, M., Stottler, Z. S., Sumihama, M., Sutcliffe, W., Takizawa, M., Tanida, K., Tenchini, F., Tiwary, R., Trabelsi, K., Uchida, M., Unno, Y., Uno, S., Usov, Y., Vahsen, S. E., Varner, G., Vinokurova, A., Wang, D., Wang, E., Wang, M.-Z., Wang, X. L., Watanabe, M., Watanuki, S., Werbycka, O., Won, E., Yabsley, B. D., Yan, W., Yin, J. H., Yuan, C. Z., Yuan, L., Zhang, Z. P., and Zhilich, V.
Published: 2023
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49. First observation of a tau neutrino charged current interaction with charm production in the Opera experiment

Author: Agafonova, N., Alexandrov, A., Anokhina, A., Aoki, S., Ariga, A., Ariga, T., Bertolin, A., Bozza, C., Brugnera, R., Buonaura, A., Buontempo, S., Chernyavskiy, M., Chukanov, A., Consiglio, L., D'Ambrosio, N., De Lellis, G., De Serio, M., Sanchez, P. del Amo, Di Crescenzo, A., Di Ferdinando, D., Di Marco, N., Dmitrievsky, S., Dracos, M., Duchesneau, D., Dusini, S., Dzhatdoev, T., Ebert, J., Ereditato, A., Fini, R. A., Fornari, F., Fukuda, T., Galati, G., Garfagnini, A., Gentile, V., Goldberg, J., Gorbunov, S., Gornushkin, Y., Grella, G., Guler, A. M., Gustavino, C., Hagner, C., Hara, T., Hayakawa, T., Hollnagel, A., Ishiguro, K., Iuliano, A., ić, K. Jakovč, Jollet, C., Kamiscioglu, C., Kamiscioglu, M., Kim, S. H., Kitagawa, N., ek, B. Klič, Kodama, K., Komatsu, M., Kose, U., Kreslo, I., Laudisio, F., Lauria, A., Longhin, A., Loverre, P., Malgin, A., Mandrioli, G., Matsuo, T., Matveev, V., Mauri, N., Medinaceli, E., Meregaglia, A., Mikado, S., Miyanishi, M., Mizutani, F., Monacelli, P., Montesi, M. C., Morishima, K., Muciaccia, M. T., Naganawa, N., Naka, T., Nakamura, M., Nakano, T., Niwa, K., Ogawa, S., Okateva, N., Ozaki, K., Paoloni, A., Paparella, L., Park, B. D., Pasqualini, L., Pastore, A., Patrizii, L., Pessard, H., Podgrudkov, D., Polukhina, N., Pozzato, M., Pupilli, F., Roda, M., Roganova, T., Rokujo, H., Rosa, G., Ryazhskaya, O., Sato, O., Schembri, A., Shakiryanova, I., Shchedrina, T., Shibayama, E., Shibuya, H., Shiraishi, T., Simone, S., Sirignano, C., Sirri, G., Sotnikov, A., Spinetti, M., Stanco, L., Starkov, N., Stellacci, S. M., ević, M. Stipč, Strolin, P., Takahashi, S., Tenti, M., Terranova, F., Tioukov, V., Vasina, S., Vilain, P., Voevodina, E., Votano, L., Vuilleumier, J. L., Wilquet, G., and Yoon, C. S.
Subjects: High Energy Physics - Experiment
Abstract: An event topology with two secondary vertices compatible with the decay of short-lived particles was found in the analysis of neutrino interactions in the Opera target. The observed topology is compatible with tau neutrino charged current (CC) interactions with charm production and neutrino neutral current (NC) interactions with $c\overline{c}$ pair production. However, other processes can mimic this topology. A dedicated analysis was implemented to identify the underlying process. A Monte Carlo simulation was developed and complementary procedures were introduced in the kinematic reconstruction. A multivariate analysis technique was used to achieve an optimal separation of signal from background. Most likely, this event is a $\nu_{\tau}$ CC interaction with charm production, the tau and charm particle decaying into 1 prong and 2 prongs, respectively. The significance of this observation is evaluated., Comment: 10 pages, 7 figures; Editors: Marco Roda, Chiara Sirignano and Gabriele Sirri
Published: 2019
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50. Study of $B \to p {\bar p} \pi \pi$

Author: Chu, K., Wang, M. -Z., Adachi, I., Aihara, H., Said, S. Al, 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., Gioi, L. Li, 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: High Energy Physics - Experiment
Abstract: Using a data sample of $772 \times 10^6$ BB pairs collected on the ${\Upsilon}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we report the observations of $B^0\to p{\bar p}\pi^+\pi^-$ and $B^+ \to p{\bar p}\pi^+\pi^0$. We measure a decay branching fraction of $(0.83 \pm 0.17 \pm 0.17) \times 10^-6$ in $B^0\to p{\bar p}\pi^+\pi^-$ for $M_{\pi^+\pi^-} < 1.22 GeV/c^2$ with a significance of 5.5 standard deviations. The contribution from $B0 \to p{\bar p}K^0$ is excluded. We measure a decay branching fraction of $(4.58 \pm 1.17 \pm 0.67) \times 10^-6$ for $B^+ \to p{\bar p}\pi^+\pi^0$ with $M_{\pi^+\pi^0} < 1.3 GeV/c^2$ with a significance of 5.4 standard deviations. We study the difference of the $M_{p{\bar p}}$ distributions in $B^0\to p{\bar p}\pi^+\pi^-$ and $B^+ \to p{\bar p}\pi^+\pi^0$., Comment: 7 pages, 4 figures, submitted to Phys.Rev.D
Published: 2019
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