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arXiv 2019年

作者： Pal, B. Adachi, I. Adamczyk, K. Aihara, H. Asner, D.M. Atmacan, H. Aulchenko, V. Aushev, T. Ayad, R. Babu, V. Badhrees, I. Bansal, V. Behera, P. Beleño, C. Berger, M. Bhardwaj, V. Bhuyan, B. Bilka, T. Biswal, J. Bobrov, A. Bozek, A. Bračko, M. Browder, T.E. Campajola, M. Cao, L. Červenkov, D. Chekelian, V. Chen, A. Cheon, B.G. Chilikin, K. Cho, K. Choi, S.-K. Choi, Y. Cinabro, D. Cunliffe, S. Di Carlo, S. Doležal, Z. Dong, T.V. Dossett, D. Eidelman, S. Epifanov, D. Fast, J.E. Ferber, T. Fulsom, B.G. Garg, R. Gaur, V. Gabyshev, N. Garmash, A. Giri, A. Goldenzweig, P. Guan, Y. Haba, J. Hara, T. Hayasaka, K. Hayashii, H. Hou, W.-S. Hsu, C.-L. Iijima, T. Inami, K. Ishikawa, A. Itoh, R. Iwasaki, M. Iwasaki, Y. Jacobs, W.W. Jia, S. Jin, Y. Joffe, D. Joo, K.K. Kaliyar, A.B. Karyan, G. Kichimi, H. Kiesling, C. Kim, C.H. Kim, D.Y. Kim, K.T. Kim, S.H. Kinoshita, K. Kodyš, P. Korpar, S. Kotchetkov, D. Križan, P. Kroeger, R. Krokovny, P. Kulasiri, R. Kwon, Y.-J. Lee, J.Y. Lee, S.C. Li, L.K. Li, Y.B. Li Gioi, L. Libby, J. Liventsev, D. Lu, P.-C. Luo, T. MacNaughton, J. MacQueen, C. Masuda, M. Matsuda, T. Matvienko, D. Merola, M. Miyabayashi, K. Miyata, H. Mizuk, R. Mohanty, G.B. Nakao, M. Nath, K.J. Nayak, M. Nisar, N.K. Nishida, S. Nishimura, K. Ogawa, S. Ono, H. Onuki, Y. Pakhlov, P. Pakhlova, G. Pardi, S. Park, S.-H. Patra, S. Paul, S. Pedlar, T.K. Pestotnik, R. Piilonen, L.E. Popov, V. Prencipe, E. Rostomyan, A. Russo, G. Sakai, Y. Salehi, M. Sandilya, S. Sanuki, T. Savinov, V. Schneider, O. Schnell, G. Schueler, J. Schwanda, C. Schwartz, A.J. Seino, Y. Senyo, K. Sevior, M.E. Shen, C.P. Shiu, J.-G. Simon, F. Sokolov, A. Solovieva, E. Starič, M. Stottler, Z.S. Strube, J.F. Sumiyoshi, T. Sutcliffe, W. Takizawa, M. Tamponi, U. Tanida, K. Tenchini, F. Uchida, M. Uglov, T. Uno, S. Urquijo, P. van Tonder, R. Varner, G. Vinokurova, A. Wang, B. University of the Basque Country UPV/EHU Bilbao48080 Spain Beihang University Beijing100191 China Brookhaven National Laboratory UptonNY11973 United States Budker Institute of Nuclear Physics SB RAS Novosibirsk630090 Russia Faculty of Mathematics and Physics Charles University Prague121 16 Czech Republic Chonnam National University Kwangju660-701 Korea Republic of University of Cincinnati CincinnatiOH45221 United States Deutsches Elektronen–Synchrotron Hamburg22607 Germany University of Florida GainesvilleFL32611 United States and Institute of Modern Physics Fudan University Shanghai200443 II. Physikalisches Institut Georg-August-Universität Göttingen Göttingen37073 Germany SOKENDAI Graduate University for Advanced Studies Hayama240-0193 Japan Gyeongsang National University Chinju660-701 Korea Republic of Hanyang University Seoul133-791 Korea Republic of University of Hawaii HonoluluHI96822 United States Tsukuba305-0801 Japan Tsukuba305-0801 Forschungszentrum Jülich Jülich52425 Germany IKERBASQUE Basque Foundation for Science Bilbao48013 Spain Indian Institute of Science Education and Research Mohali SAS Nagar140306 India Indian Institute of Technology Guwahati Assam781039 India Indian Institute of Technology HyderabadTelangana502285 India Indian Institute of Technology Madras Chennai600036 India Indiana University BloomingtonIN47408 United States Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China Institute of High Energy Physics Vienna1050 Austria Institute for High Energy Physics Protvino 142281 Russia INFN - Sezione di Napoli Napoli80126 Italy INFN - Sezione di Torino Torino10125 Italy Advanced Science Research Center Japan Atomic Energy Agency Naka319-1195 J. Stefan Institute Ljubljana1000 Slovenia Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie Karlsruhe76131 Germany Kennesaw State University Kennesaw Georgia30144 United States King A

We report a search for the charmless baryonic decay B0 → ppπ ¯ 0 with a data sample corresponding to an integrated luminosity of 711 fb−1 containing (772±10)×106 BB pairs. The data was collected by the Belle experiment running on the Υ(4S) resonance at the KEKB e+e− collider. We measure a branching fraction B(B0 → ppπ ¯ 0) = (5.0 ± 1.8 ± 0.6) × 10−7, where the first uncertainty is statistical and the second is systematic. The signal has a significance of 3.1 standard deviations and constitutes the first evidence for this decay mode. We also search for the intermediate two-body decays B0 → ∆+ p¯ and B0 → ∆¯ −p, and set an upper limit on the branching fraction: B(B0 → ∆+ p¯) + B(B0 → ∆¯ −p) −6 at 90% confidence level. Copyright © 2019, The Authors. All rights reserved.

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Publisher Correction: The Scales Project, a cross-national dataset on the interpretation of thermal perception scales

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Scientific data 2020年第1期7卷 11页

作者： Marcel Schweiker Amar Abdul-Zahra Maíra André Farah Al-Atrash Hanan Al-Khatri Rea Risky Alprianti Hayder Alsaad Rucha Amin Eleni Ampatzi Alpha Yacob Arsano Montazami Azadeh Elie Azar Bannazadeh Bahareh Amina Batagarawa Susanne Becker Carolina Buonocore Bin Cao Joon-Ho Choi Chungyoon Chun Hein Daanen Siti Aisyah Damiati Lyrian Daniel Renata De Vecchi Shivraj Dhaka Samuel Domínguez-Amarillo Edyta Dudkiewicz Lakshmi Prabha Edappilly Jesica Fernández-Agüera Mireille Folkerts Arjan Frijns Gabriel Gaona Vishal Garg Stephanie Gauthier Shahla Ghaffari Jabbari Djamila Harimi Runa T Hellwig Gesche M Huebner Quan Jin Mina Jowkar Renate Kania Jungsoo Kim Nelson King Boris Kingma M Donny Koerniawan Jakub Kolarik Shailendra Kumar Alison Kwok Roberto Lamberts Marta Laska M C Jeffrey Lee Yoonhee Lee Vanessa Lindermayr Mohammadbagher Mahaki Udochukwu Marcel-Okafor Laura Marín-Restrepo Anna Marquardsen Francesco Martellotta Jyotirmay Mathur Gráinne McGill Isabel Mino-Rodriguez Di Mou Bassam Moujalled Mia Nakajima Edward Ng Marcellinus Okafor Mark Olweny Wanlu Ouyang Ana Ligia Papst de Abreu Alexis Pérez-Fargallo Indrika Rajapaksha Greici Ramos Saif Rashid Christoph F Reinhart Ma Isabel Rivera Mazyar Salmanzadeh Karin Schakib-Ekbatan Stefano Schiavon Salman Shooshtarian Masanori Shukuya Veronica Soebarto Mohammad Tahsildoost Federico Tartarini Despoina Teli Priyam Tewari Samar Thapa Maureen Trebilcock Jörg Trojan Ruqayyatu B Tukur Conrad Voelker Yeung Yam Liu Yang Gabriela Zapata-Lancaster Yongchao Zhai Yingxin Zhu Zahra Sadat Zomorodian Building Science Group Karlsruhe Institute of Technology Englerstr. 7 76131 Karlsruhe Germany. marcel.schweiker@kit.edu. WIN-Kolleg Thermal comfort and pain Heidelberg Academy of Sciences and Humanities Karlstr. 4 69117 Heidelberg Germany. marcel.schweiker@kit.edu. Mechanical Engineering Department University of Technology Iraq Al sinaea 10066 Baghdad Iraq. CTC/Department of Civil Engineering Federal University of Santa Catarina Rua João Pio Duarte Silva s/n. Córrego Grande 88.040-901 Florianópolis SC Brazil. School of Architecture and Built Environment German Jordanian University Darat Othman Bdeir 11180 Amman Jordan. Civil and Architectural Engineering Department Sultan Qaboos University Al-Khod P.O. Box: 33 PC: 123 Muscat Oman. Laboratory of Building Technology Department of Architecture Institut Teknologi Bandung Ganesha 10 40132 Bandung Indonesia. Department of Building Physics Bauhaus-University Weimar Coudraystr. 11A 99423 Weimar Germany. Energy & Climate Change Group Faculty of Engineering & Physical Sciences University of Southampton University Road SO17 1BJ Southampton United Kingdom. Welsh School of Architecture Cardiff University King Edward VII Avenue CF10 3NB Cardiff United Kingdom. Department of Architecture Massachusetts Institute of Technology Massachusetts Ave 02139 Cambridge United States of America. Faculty of Engineering Environment and Computing BNE Research Centre Coventry University Gulson road CV1 2JH Coventry United Kingdom. Industrial and Systems Engineering Khalifa University Masdar Campus Building 1B 54224 Abu Dhabi United Arab Emirates. Architecture University of Tehran Kish International Campus Niyayesh St. Mirmohanna Blvd 79416-55665 Kish Iran. Department of Architecture Ahmadu Bello University Zaria Nigeria Samaru Zaria Nigeria. WIN-Kolleg Thermal comfort and pain Heidelberg Academy of Sciences and Humanities Karlstr. 4 69117 Heidelberg Germany. Department of Cognitive and Clinical Neurosci

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

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Student and faculty perceptions of attendance policies at a polytechnic university 122

Student and faculty perceptions of attendance policies at a ...

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2015 122nd ASEE Annual Conference and Exposition

作者： Lowder, Loraine Khalid, Adeel Ferreira, Daniel R. Bohannon, Jeanne Law Stutzmann, Beth Atiqullah, Mir M. Singh, Rajnish Yee, Tien Acharya, Keshav Raj Chin, Craig A. Karim, M.A. Keyser, Robert Shegiharu Colebeck, Donna Systems and Mechanical Engineering Department Southern Polytechnic State University United States Southern Polytechnic College of Engineering and Engineering Technology Department of Systems Engineering United States Department of Environmental Science Southern Polytechnic State University Fulton County Schools MariettaGA United States Kennesaw State University Department of Mechanical Engineering Southern Polytechnic College of Engineering and Engineering Technology GA United States Southern Polytechnic State University United States Department of Electrical and Computer Engineering Technology Southern Polytechnic State University United States

The goal of an attendance policy is to improve the academic success of students. However, current literature does not provide clear conclusions regarding whether enforcing an attendance policy actually improves student performance. This study examined student and faculty perceptions regarding the utility of attendance policies in undergraduate courses at a polytechnic university. Anonymous surveys were completed by 89 faculty members and 455 students from five schools (engineering, engineering technology and Management, Computer and Software engineering, Architecture, and Arts and Sciences) on a single campus. Comparisons between the perceptions of students and faculty members are presented, as are comparisons between the perceptions of lower-level and upper-level students. Variations in perceptions based on major are also highlighted. Finally, trends in perceptions regarding attendance policies in lower-level versus upper-level undergraduate courses are revealed. Students, regardless of major, class standing, or course level, reported attending more classes in courses that had attendance policies. The most significant impact of an attendance policy on class attendance was observed at the freshman level. While 84% of freshmen reported attending at least 90% of the classes in a course with an attendance policy, only 67% reported attending at that rate in a course without one. Qualitative data containing students' attitudes towards attendance policies are also analyzed and discussed. Even though class attendance appeared to have improved as a result of attendance policies, students' perceptions about these policies varied significantly. Overall, the majority of students (51%) believed that, for a course with an attendance policy, the policy positively affected final grades. For a course without an attendance policy, the majority (57%) felt that the lack of a policy had no impact on final grades. Faculty members' perceptions about attendance policies likewise varied. O

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An introductory study of the impact of implementation intentions on assignment completion rates with an emphasis on engineering technology students 122

An introductory study of the impact of implementation intent...

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2015 122nd ASEE Annual Conference and Exposition

作者： Scherrer, Christina R. Sharma, Leigh Vandenbussche, Jennifer Washington, Valerie Department of Systems and Industrial Engineering Southern Polytechnic College of Engineering Kennesaw State University United States Department of Mathematics Kennesaw State University United States

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Observation of Ξ c ( 2930 ) 0 and updated measurement of B - → K - Λ c + Λ ¯ c - at Belle

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The European Physical Journal C 2018年第3期78卷 1-8页

作者： Li, Y. B. Shen, C. P. Adachi, I. Ahn, J. K. Aihara, H. Al Said, S. Asner, D. M. Aushev, T. Ayad, R. Babu, V. Badhrees, I. Bakich, A. M. Ban, Y. Bansal, V. Behera, P. Berger, M. Bhardwaj, V. Bhuyan, B. Biswal, J. Bonvicini, G. Bozek, A. Bračko, M. Browder, T. E. Červenkov, D. Chekelian, V. Chen, A. Cheon, B. G. Chilikin, K. Cho, K. Choi, S.-K. Choi, Y. Cinabro, D. Cunliffe, S. Dash, N. Di Carlo, S. Doležal, Z. Drásal, Z. Eidelman, S. Epifanov, D. Fast, J. E. Ferber, T. Fulsom, B. G. Garg, R. Gaur, V. Gabyshev, N. Garmash, A. Gelb, M. Giri, A. Goldenzweig, P. Guido, E. Haba, J. Hara, T. Hayasaka, K. Hayashii, H. Hedges, M. T. Hou, W.-S. Iijima, T. Inami, K. Inguglia, G. Ishikawa, A. Itoh, R. Iwasaki, M. Iwasaki, Y. Jacobs, W. W. Jia, S. Jin, Y. Joo, K. K. Julius, T. Karyan, G. Kato, Y. Kawasaki, T. Kichimi, H. Kiesling, C. Kim, D. Y. Kim, J. B. Kim, K. T. Kim, S. H. Kinoshita, K. Kodyš, P. Korpar, S. Kotchetkov, D. Križan, P. Kroeger, R. Krokovny, P. Kulasiri, R. Kumita, T. Kuzmin, A. Kwon, Y.-J. Lee, I. S. Lee, S. C. Li, L. K. Li Gioi, L. Libby, J. Liventsev, D. Lubej, M. Luo, T. MacNaughton, J. Masuda, M. Matsuda, T. Merola, M. Miyabayashi, K. Miyata, H. Mizuk, R. Mohanty, G. B. Moon, H. K. Mori, T. Mrvar, M. Mussa, R. Nakano, E. Nakao, M. Nanut, T. Nath, K. J. Natkaniec, Z. Nayak, M. Niiyama, M. Nishida, S. Ogawa, S. Pakhlov, P. Pakhlova, G. Pal, B. Pardi, S. Park, C. W. Park, H. Paul, S. Pedlar, T. K. Pestotnik, R. Piilonen, L. E. Popov, V. Rostomyan, A. Russo, G. Sakai, Y. Salehi, M. Sandilya, S. Santelj, L. Sanuki, T. Schneider, O. Schnell, G. Schwanda, C. Seino, Y. Shebalin, V. Shibata, T.-A. Shiu, J.-G. Shwartz, B. Sokolov, A. Solovieva, E. Starič, M. Strube, J. F. Sumihama, M. Sumiyoshi, T. Takizawa, M. Tamponi, U. Tanida, K. Tenchini, F. Uchida, M. Uglov, T. Unno, Y. Uno, S. Van Hulse, C. Varner, G. Vorobyev, V. Vossen, A. Waheed, E. Wang, B. Wang, C. H. Wang, M.-Z. Wang, P. Wang, X. L. Watanabe, M. Watanabe, Y. Widmann, E. Won, E. Ye, H. Yelton, J. Yuan, C. Z. Yusa, Y. Zakharov, S. Zhang, Z. P. Zhilich, Peking University Beijing China Beihang University Beijing China SOKENDAI (The Graduate University for Advanced Studies) Hayama Japan High Energy Accelerator Research Organization (KEK) Tsukuba Japan Korea University Seoul South Korea Department of Physics University of Tokyo Tokyo Japan Department of Physics Faculty of Science King Abdulaziz University Jeddah Saudi Arabia Department of Physics Faculty of Science University of Tabuk Tabuk Saudi Arabia Pacific Northwest National Laboratory Richland USA Moscow Institute of Physics and Technology Moscow Russia Tata Institute of Fundamental Research Mumbai India King Abdulaziz City for Science and Technology Riyadh Saudi Arabia School of Physics University of Sydney Sydney Australia Indian Institute of Technology Madras Chennai India Stefan Meyer Institute for Subatomic Physics Vienna Austria Indian Institute of Science Education and Research Mohali SAS Nagar India Indian Institute of Technology Guwahati Guwahati India J. Stefan Institute Ljubljana Slovenia Wayne State University Detroit USA H. Niewodniczanski Institute of Nuclear Physics Kraków Poland University of Maribor Maribor Slovenia University of Hawaii Honolulu USA Faculty of Mathematics and Physics Charles University Prague Czech Republic Max-Planck-Institut für Physik Munich Germany National Central University Chung-li Taiwan Hanyang University Seoul South Korea P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow Russia Moscow Physical Engineering Institute Moscow Russia Korea Institute of Science and Technology Information Daejeon South Korea Gyeongsang National University Chinju South Korea Sungkyunkwan University Suwon South Korea Indian Institute of Technology Bhubaneswar Bhubaneswar India Budker Institute of Nuclear Physics SB RAS Novosibirsk Russia Novosibirsk State University Novosibirsk Russia Deutsches Elektronen-Synchrotron Hamburg Germany Panjab University Chandigarh India Virginia Polytechnic In

We report the first observation of the $$\Xi _{c}(2930)^0$$ charmed-strange baryon with a significance greater than 5 $$\sigma $$ . The $$\Xi _{c}(2930)^0$$ is found in its decay to $$K^- \Lambda _{c}^+$$ in $$B^{-} \rightarrow K^{-} \Lambda _{c}^{+} \bar{\Lambda }_{c}^{-}$$ decays. The measured mass and width are $$[2928.9 \pm 3.0(\mathrm stat.)^{+0.9}_{-12.0}(\mathrm syst.)]$$ MeV/ $$c^{2}$$ and $$[19.5 \pm 8.4(\mathrm stat.) ^{+5.9}_{-7.9}(\mathrm syst.)]$$ MeV, respectively, and the product branching fraction is $$\mathcal{B}(B^{-} \rightarrow \Xi _{c}(2930)^0 \bar{\Lambda }_{c}^{-}) \mathcal{B}(\Xi _{c}(2930)^0 \rightarrow K^- \Lambda _{c}^{+})=[1.73 \pm 0.45(\mathrm stat.) \pm 0.21(\mathrm syst.)]\times 10^{-4}$$ . We also measure $$\mathcal{B}(B^{-} \rightarrow K^{-} \Lambda _{c}^{+} \bar{\Lambda }_{c}^{-}) = [4.80 \pm 0.43(\mathrm stat.) \pm 0.60(\mathrm syst.)] \times 10^{-4}$$ with improved precision, and search for the charmonium-like state Y(4660) and its spin partner, $$Y_{\eta }$$ , in the $$\Lambda _{c}^{+}\bar{\Lambda }_{c}^{-}$$ invariant mass spectrum. No clear signals of the Y(4660) nor its spin partner are observed and the 90% credibility level (C.L.) upper limits on their production rates are determined. These measurements are obtained from a sample of $$(772\pm 11)\times 10^{6} B\bar{B}$$ pairs collected at the $$\Upsilon (4S)$$ resonance by the Belle detector at the KEKB asymmetric energy electron–positron collider.

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Development of a ball and plate system 122

Development of a ball and plate system

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2015 122nd ASEE Annual Conference and Exposition

作者： Ham, Chan Taufiq, Mohsin Mohammad Department of Mechatronics Engineering Kennesaw State University United States Mechatronics Engineering Department Southern Polytechnic State University United States

This paper presents the development of a dynamic ball-and-plate system successfully completed for a one-semester Senior Capstone Design project. A group of five undergraduate students developed the project concept and constructed a prototype within a semester, integrating major mechatronics engineering concepts learned in classes. The three-degree-of-freedom system consists of sensors, actuators, and controls to keep a free rolling ball in a desired position on a flat plate, accounting for any possible external disturbances. Due to its complexity, multiple steps were taken to solve the design challenges and develop the system. The major works were mathematical modeling, kinematic constraints and dimensional analysis, simulations, and construction of the system. The control system required an effective control strategy and a thorough analysis of system parameters. The system's feasibility and optimal operation were fully considered in the design phase. The design was then validated by simulations using Simulink/MATLAB" and experimental testing. The completion of the system development provided the understanding of analyzing different control designs on various system parameters based on multidisciplinary mechatronics design principles. Lastly, the class outcomes confirmed the effectiveness of students' learning on multidisciplinary mechatronics engineering through this hands-on project as an assessment of the design project presented. © American Society for engineering Education, 2015.

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Observation of ϒ(4S)→η′ϒ(1S)

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Physical Review Letters 2018年第6期121卷 062001-062001页

作者： E. Guido R. Mussa U. Tamponi H. Aihara S. Al Said D. M. Asner H. Atmacan V. Aulchenko T. Aushev R. Ayad V. Babu I. Badhrees A. M. Bakich V. Bansal P. Behera M. Berger V. Bhardwaj J. Biswal A. Bondar G. Bonvicini A. Bozek M. Bračko T. E. Browder D. Červenkov V. Chekelian A. Chen B. G. Cheon K. Chilikin K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe S. Di Carlo Z. Doležal S. Eidelman D. Epifanov J. E. Fast T. Ferber B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash M. Gelb A. Giri P. Goldenzweig J. Haba T. Hara H. Hayashii M. T. Hedges W.-S. Hou K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs H. B. Jeon S. Jia Y. Jin T. Julius K. H. Kang G. Karyan T. Kawasaki C. Kiesling D. Y. Kim J. B. Kim K. T. Kim S. H. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny R. Kulasiri R. Kumar T. Kumita A. Kuzmin Y.-J. Kwon I. S. Lee S. C. Lee L. K. Li Y. B. Li L. Li Gioi J. Libby D. Liventsev M. Lubej T. Luo J. MacNaughton M. Masuda T. Matsuda D. Matvienko M. Merola K. Miyabayashi H. Miyata R. Mizuk G. B. Mohanty H. K. Moon T. Mori E. Nakano M. Nakao T. Nanut K. J. Nath M. Nayak M. Niiyama S. Nishida S. Ogawa H. Ono W. Ostrowicz G. Pakhlova B. Pal S. Pardi C. W. Park S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen V. Popov A. Rostomyan G. Russo Y. Sakai M. Salehi T. Sanuki O. Schneider G. Schnell C. Schwanda Y. Seino V. Shebalin C. P. Shen T.-A. Shibata J.-G. Shiu B. Shwartz A. Sokolov M. Starič J. F. Strube M. Sumihama T. Sumiyoshi M. Takizawa K. Tanida F. Tenchini M. Uchida T. Uglov Y. Unno Y. Usov C. Van Hulse G. Varner A. Vinokurova B. Wang C. H. Wang M. -Z. Wang P. Wang X. L. Wang M. Watanabe Y. Watanabe E. Widmann E. Won H. Ye J. Yelton C. Z. Yuan Y. Yusa S. Zakharov Z. P. Zhang V. Zhilich V. Zhukova V. Zhulanov INFN—Sezione di Torino 10125 Torino University of Torino 10124 Torino Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Pacific Northwest National Laboratory Richland Washington 99352 University of South Carolina Columbia South Carolina 29208 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 Moscow Institute of Physics and Technology Moscow Region 141700 Tata Institute of Fundamental Research Mumbai 400005 King Abdulaziz City for Science and Technology Riyadh 11442 School of Physics University of Sydney New South Wales 2006 Indian Institute of Technology Madras Chennai 600036 Stefan Meyer Institute for Subatomic Physics Vienna 1090 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 J. Stefan Institute 1000 Ljubljana Wayne State University Detroit Michigan 48202 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor University of Hawaii Honolulu Hawaii 96822 Faculty of Mathematics and Physics Charles University 121 16 Prague Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Hanyang University Seoul 133-791 P. N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Moscow Physical Engineering Institute Moscow 115409 Korea Institute of Science and Technology Information Daejeon 305-806 Gyeongsang National University Chinju 660-701 Sungkyunkwan University Suwon 440-746 Indian Institute of Technology Hyderabad Telangana 502285 Deutsches Elektronen-Synchrotron 22607 Hamburg Panjab University Chandigarh 160014 Virginia Polytechnic Institute and State University Blacksburg Virginia 24061 Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe High Energy Accelerator Research Organization (KEK)

We report the first observation of the hadronic transition ϒ(4S)→η′ϒ(1S), using 496 fb−1 data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We reconstruct the η′ meson through its decays to ρ0γ and to π+π−η, with η→γγ. We measure B(ϒ(4S)→η′ϒ(1S))=[3.43±0.88(stat)±0.21(syst)]×10−5, with a significance of 5.7σ.

关键词： Hadronic decays Quarkonia

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Search for B−→μ−ν¯μ Decays at the Belle Experiment

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Physical Review Letters 2018年第3期121卷 031801-031801页

作者： A. Sibidanov K. E. Varvell I. Adachi H. Aihara S. Al Said D. M. Asner T. Aushev R. Ayad V. Babu I. Badhrees S. Bahinipati A. M. Bakich V. Bansal E. Barberio P. Behera B. Bhuyan J. Biswal A. Bozek M. Bračko T. E. Browder D. Červenkov P. Chang V. Chekelian A. Chen B. G. Cheon K. Chilikin K. Cho S.-K. Choi Y. Choi D. Cinabro T. Czank N. Dash S. Di Carlo Z. Doležal Z. Drásal D. Dutta S. Eidelman D. Epifanov J. E. Fast T. Ferber B. G. Fulsom V. Gaur N. Gabyshev A. Garmash P. Goldenzweig D. Greenwald Y. Guan E. Guido J. Haba K. Hayasaka H. Hayashii M. T. Hedges S. Hirose W.-S. Hou C.-L. Hsu T. Iijima K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs I. Jaegle H. B. Jeon Y. Jin K. K. Joo T. Julius J. Kahn A. B. Kaliyar K. H. Kang G. Karyan T. Kawasaki C. Kiesling D. Y. Kim J. B. Kim S. H. Kim Y. J. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov P. Križan P. Krokovny T. Kuhr R. Kulasiri R. Kumar A. Kuzmin Y.-J. Kwon J. S. Lange I. S. Lee C. H. Li L. Li L. Li Gioi J. Libby D. Liventsev M. Lubej T. Luo M. Masuda T. Matsuda M. Merola K. Miyabayashi H. Miyata R. Mizuk G. B. Mohanty H. K. Moon T. Mori R. Mussa E. Nakano M. Nakao T. Nanut K. J. Nath Z. Natkaniec M. Nayak M. Niiyama N. K. Nisar S. Nishida S. Ogawa S. Okuno H. Ono P. Pakhlov G. Pakhlova B. Pal C.-S. Park C. W. Park H. Park S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen M. Ritter A. Rostomyan M. Rozanska Y. Sakai M. Salehi S. Sandilya Y. Sato V. Savinov O. Schneider G. Schnell C. Schwanda Y. Seino K. Senyo M. E. Sevior V. Shebalin C. P. Shen T.-A. Shibata J.-G. Shiu F. Simon A. Sokolov E. Solovieva M. Starič J. F. Strube J. Stypula M. Sumihama K. Sumisawa T. Sumiyoshi M. Takizawa U. Tamponi K. Tanida F. Tenchini K. Trabelsi M. Uchida S. Uehara T. Uglov Y. Unno S. Uno P. Urquijo C. Van Hulse G. Varner V. Vorobyev C. H. Wang M.-Z. Wang P. Wang M. Watanabe S. Watanuki E. Widmann E. Won Y. Yamashita H. Ye J. Yelton C. Z. Yuan Y. Yusa Z. P. Zhang V. Zhilich V. Zhukova V. Zhulanov A. Zupanc School of Physics University of Sydney New South Wales 2006 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Pacific Northwest National Laboratory Richland Washington 99352 Moscow Institute of Physics and Technology Moscow Region 141700 Tata Institute of Fundamental Research Mumbai 400005 King Abdulaziz City for Science and Technology Riyadh 11442 Indian Institute of Technology Bhubaneswar Satya Nagar 751007 School of Physics University of Melbourne Victoria 3010 Indian Institute of Technology Madras Chennai 600036 Indian Institute of Technology Guwahati Assam 781039 J. Stefan Institute 1000 Ljubljana H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor University of Hawaii Honolulu Hawaii 96822 Faculty of Mathematics and Physics Charles University 121 16 Prague Department of Physics National Taiwan University Taipei 10617 Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Hanyang University Seoul 133-791 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Moscow Physical Engineering Institute Moscow 115409 Korea Institute of Science and Technology Information Daejeon 305-806 Gyeongsang National University Chinju 660-701 Sungkyunkwan University Suwon 440-746 Wayne State University Detroit Michigan 48202 Department of Physics Tohoku University Sendai 980-8578 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 Deutsches Elektronen–Synchrotron 22607 Hamburg Virginia Polytechnic Institute and State University Blacksburg Virginia 24061 Institut für Experimentelle Kernphysik Karlsruher Institut für Technologi

We report the results of a search for the rare, purely leptonic decay B−→μ−ν¯μ performed with a 711 fb−1 data sample that contains 772×106 BB¯ pairs, collected near the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B−→μ−ν¯μ)=(6.46±2.22±1.60)×10−7 or a frequentist 90% confidence level interval on the B−→μ−ν¯μ branching fraction of [2.9,10.7]×10−7.

关键词： Branching fraction Form factors Leptonic, semileptonic & radiative decays W & Z bosons Bottom mesons Bottom quark Muons Lepton colliders

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Observation of ϒ(2S)→γηb(1S) Decay

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Physical Review Letters 2018年第23期121卷 232001-232001页

作者： B. G. Fulsom T. K. Pedlar I. Adachi H. Aihara S. Al Said D. M. Asner H. Atmacan V. Aulchenko T. Aushev R. Ayad V. Babu I. Badhrees A. M. Bakich V. Bansal P. Behera C. Beleño M. Berger V. Bhardwaj B. Bhuyan T. Bilka J. Biswal A. Bondar G. Bonvicini A. Bozek M. Bračko T. E. Browder L. Cao D. Červenkov V. Chekelian A. Chen B. G. Cheon K. Chilikin K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe N. Dash S. Di Carlo J. Dingfelder Z. Doležal T. V. Dong Z. Drásal S. Eidelman D. Epifanov J. E. Fast T. Ferber R. Garg V. Gaur N. Gabyshev A. Garmash M. Gelb A. Giri P. Goldenzweig E. Guido J. Haba K. Hayasaka H. Hayashii S. Hirose W.-S. Hou T. Iijima K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs H. B. Jeon S. Jia Y. Jin D. Joffe K. K. Joo T. Julius T. Kawasaki H. Kichimi C. Kiesling D. Y. Kim H. J. Kim J. B. Kim K. T. Kim S. H. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny T. Kuhr R. Kulasiri A. Kuzmin Y.-J. Kwon J. S. Lange I. S. Lee S. C. Lee L. K. Li Y. B. Li L. Li Gioi J. Libby D. Liventsev M. Lubej T. Luo M. Masuda T. Matsuda D. Matvienko M. Merola K. Miyabayashi H. Miyata R. Mizuk G. B. Mohanty H. K. Moon T. Mori R. Mussa M. Nakao T. Nanut K. J. Nath Z. Natkaniec M. Nayak M. Niiyama N. K. Nisar S. Nishida S. Ogawa S. Okuno H. Ono P. Pakhlov G. Pakhlova B. Pal S. Pardi H. Park S. Paul R. Pestotnik L. E. Piilonen V. Popov E. Prencipe A. Rabusov M. Ritter A. Rostomyan G. Russo Y. Sakai M. Salehi S. Sandilya L. Santelj T. Sanuki V. Savinov O. Schneider G. Schnell C. Schwanda Y. Seino K. Senyo M. E. Sevior V. Shebalin C. P. Shen T.-A. Shibata J.-G. Shiu B. Shwartz F. Simon J. B. Singh A. Sokolov E. Solovieva M. Starič J. F. Strube M. Sumihama K. Sumisawa T. Sumiyoshi W. Sutcliffe M. Takizawa U. Tamponi K. Tanida F. Tenchini M. Uchida T. Uglov Y. Unno S. Uno P. Urquijo S. E. Vahsen C. Van Hulse R. Van Tonder G. Varner A. Vinokurova V. Vorobyev A. Vossen B. Wang C. H. Wang P. Wang X. L. Wang M. Watanabe S. Watanuki E. Widmann E. Won H. Ye J. H. Yi Pacific Northwest National Laboratory Richland Washington 99352 Luther College Decorah Iowa 52101 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 University of South Carolina Columbia South Carolina 29208 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 Moscow Institute of Physics and Technology Moscow Region 141700 Tata Institute of Fundamental Research Mumbai 400005 King Abdulaziz City for Science and Technology Riyadh 11442 School of Physics University of Sydney New South Wales 2006 Indian Institute of Technology Madras Chennai 600036 II. Physikalisches Institut Georg-August-Universität Göttingen 37073 Göttingen Stefan Meyer Institute for Subatomic Physics Vienna 1090 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 Indian Institute of Technology Guwahati Assam 781039 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana Wayne State University Detroit Michigan 48202 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor University of Hawaii Honolulu Hawaii 96822 Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Hanyang University Seoul 133-791 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Daejeon 305-806 Gyeongsang National University Chinju 660-701 Sungkyunkwan University Suwon 440-746 Indian Institute of Technology Hyd

We report the observation of ϒ(2S)→γηb(1S) decay based on an analysis of the inclusive photon spectrum of 24.7 fb−1 of e+e− collisions at the ϒ(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e+e− collider. We measure a branching fraction of B[ϒ(2S)→γηb(1S)]=(6.1−0.7−0.6+0.6+0.9)×10−4 and derive an ηb(1S) mass of 9394.8−3.1−2.7+2.7+4.5 MeV/c2, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.

关键词： Branching fraction Leptonic, semileptonic & radiative decays Quarkonia Mass

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Measurement of the decays Λc→Σππ at Belle

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Physical Review D 2018年第11期98卷 112006-112006页

作者： M. Berger C. Schwanda K. Suzuki I. Adachi J. K. Ahn H. Aihara S. Al Said D. M. Asner H. Atmacan V. Aulchenko T. Aushev R. Ayad V. Babu I. Badhrees A. M. Bakich V. Bansal P. Behera V. Bhardwaj B. Bhuyan J. Biswal G. Bonvicini A. Bozek M. Bračko T. E. Browder D. Červenkov A. Chen B. G. Cheon K. Chilikin K. Cho Y. Choi D. Cinabro T. Czank N. Dash S. Di Carlo Z. Doležal D. Dutta S. Eidelman D. Epifanov J. E. Fast T. Ferber B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash M. Gelb A. Giri P. Goldenzweig O. Grzymkowska Y. Guan E. Guido J. Haba T. Hara K. Hayasaka H. Hayashii M. T. Hedges W.-S. Hou T. Iijima K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs I. Jaegle S. Jia Y. Jin K. K. Joo T. Julius A. B. Kaliyar K. H. Kang G. Karyan T. Kawasaki H. Kichimi C. Kiesling D. Y. Kim H. J. Kim J. B. Kim K. T. Kim S. H. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny T. Kuhr R. Kulasiri A. Kuzmin Y.-J. Kwon J. S. Lange I. S. Lee S. C. Lee L. K. Li Y. Li L. Li Gioi J. Libby D. Liventsev M. Lubej T. Luo M. Masuda T. Matsuda D. Matvienko M. Merola K. Miyabayashi H. Miyata R. Mizuk G. B. Mohanty H. K. Moon T. Mori R. Mussa T. Nakano M. Nakao T. Nanut K. J. Nath Z. Natkaniec M. Nayak M. Niiyama N. K. Nisar S. Nishida S. Okuno H. Ono Y. Onuki P. Pakhlov G. Pakhlova B. Pal H. Park S. Paul I. Pavelkin T. K. Pedlar R. Pestotnik L. E. Piilonen V. Popov M. Ritter A. Rostomyan G. Russo Y. Sakai M. Salehi S. Sandilya L. Santelj T. Sanuki V. Savinov O. Schneider G. Schnell A. J. Schwartz Y. Seino K. Senyo O. Seon M. E. Sevior V. Shebalin C. P. Shen T.-A. Shibata N. Shimizu J.-G. Shiu B. Shwartz F. Simon A. Sokolov E. Solovieva M. Starič J. F. Strube M. Sumihama T. Sumiyoshi M. Takizawa U. Tamponi K. Tanida F. Tenchini M. Uchida T. Uglov Y. Unno S. Uno P. Urquijo Y. Usov C. Van Hulse G. Varner K. E. Varvell A. Vinokurova V. Vorobyev A. Vossen B. Wang C. H. Wang M.-Z. Wang P. Wang X. L. Wang M. Watanabe Y. Watanabe E. Widmann E. Won H. Ye J. Yelton C. Z. Yuan Y. Yusa S. Zakharov Stefan Meyer Institute for Subatomic Physics Vienna 1090 Institute of High Energy Physics Vienna 1050 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Korea University Seoul 136-713 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Pacific Northwest National Laboratory Richland Washington 99352 University of South Carolina Columbia South Carolina 29208 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 Moscow Institute of Physics and Technology Moscow Region 141700 Tata Institute of Fundamental Research Mumbai 400005 King Abdulaziz City for Science and Technology Riyadh 11442 School of Physics University of Sydney New South Wales 2006 Indian Institute of Technology Madras Chennai 600036 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 Indian Institute of Technology Guwahati Assam 781039 J. Stefan Institute 1000 Ljubljana Wayne State University Detroit Michigan 48202 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor University of Hawaii Honolulu Hawaii 96822 Faculty of Mathematics and Physics Charles University 121 16 Prague National Central University Chung-li 32054 Hanyang University Seoul 133-791 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Moscow Physical Engineering Institute Moscow 115409 Korea Institute of Science and Technology Information Daejeon 305-806 Sungkyunkwan University Suwon 440-746 Department of Physics Tohoku University Sendai 980-8578 Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Deutsches Elektronen–Synchrotron 22607 Hamburg Panjab University Chandigarh 160014 Virginia Polytechnic Institute and State University Black

We report measurements of the branching fractions of the decays Λc+→Σ+π−π+, Λc+→Σ0π+π0 and Λc+→Σ+π0π0 relative to the reference channel Λc+→pK−π+. The analysis is based on the full data sample collected at and near the ϒ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e+e− collider, corresponding to an integrated luminosity of 711 fb−1. We measure B(Λc+→Σ+π−π+)/B(Λc+→pK−π+)=0.719±0.003±0.024, B(Λc+→Σ0π+π0)/B(Λc+→pK−π+)=0.575±0.005±0.036 and B(Λc+→Σ+π0π0)/B(Λc+→pK−π+)=0.247±0.006±0.019. The listed uncertainties are statistical and systematic, respectively.

关键词： Branching fraction Hadronic decays Particle decays

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