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28th International Workshop on Vertex Detectors, Vertex 2019

作者： bilka, T. Abudinén, F. Ackermann, K. Ahlburg, P. Aihara, H. Albalawi, M. Alonso, O. Andricek, L. Ayad, R. Aziz, T. babu, V. bacher, S. bahinipati, S. bai, Y. barberio, e. baroncelli, Ti. baroncelli, To. basith, A.K. batignani, G. bauer, A. behera, P.K. bertacchi, V. bettarini, S. bhuyan, b. blanco, R. bosi, F. boronat, M. bosisio, L. bozek, A. buchsteiner, F. Camien, C. Caldwell, A. Caria, G. Casarosa, G. Ceccanti, M. Červenkov, D. Chekelian, V. Czank, T. Dash, N. de Nuccio, M. Deschamps, b. Dieguez, A. Dingfelder, J. Doležal, Z. esperante, D. Fischer, P. Forti, F. Fras, M. Frey, A. Friedl, M. Fuster, J. Gabriel, M. Gadow, K. Gebauer, U. Germic, L. Gessler, T. Getzkow, D. Gioi, L. Glazov, A. Gobbo, b. Gomis, P. Grimaldo, J.A.M. Hara, K. Heck, M. Hemperek, T. Hensel, M. Higuchi, T. Hoek, M. Irmler, C. Ishikawa, A. Jaegle, I. Jeon, H.b. Joo, C. Kaleta, M. Kandra, J. Kambara, N. Kang, K.H. Kapusta, P. Kiesling, C. Kisielewski, b. Kittlinger, D. Klose, D. Kodyš, P. Koffmane, C. Kohriki, T. Koike, S. Komarov, I. Konorov, I. Krivokuca, S. Krüger, H. Kuhr, T. Kühn, W. Kumar, M. Kumar, R. Kvasnička, P. la Licata, C. Lacasta, C. Lalwani, K. Lanceri, L. Lange, J.S. Lautenbach, K. Lee, J.Y. Lee, S.C. Leis, U. Leitl, P. Levit, D. Li, Y. Libby, J. Liemann, G. Liu, Z. Lueck, T. Lütticke, F. Macharski, L. Mammini, P. Mariñas, C. Martini, A. Mayekar, S.N. McCarney, S. Mohanty, G.b. Morii, T. Moser, H.G. Moya, D. Mueller, F.J. Müller, F. Münchow, D. Nakamura, K.R. Nakayama, H. Natkaniec, Z. Niebuhr, C. Ninkovic, J. Onuki, Y. Ostrowicz, W. Packheiser, U. Paladino, A. Paoloni, e. Park, H. Paschen, b. Paul, S. Peric, I. Poblotzki, F. Prasanth, K. Praz, C. Profeti, A. Rabusov, A. Rashevskaya, I. Rao, K.K. Reiter, S.P. Resmi, P.K. Richter, R. Ritter, M. Ritzert, M. Rizzo, G. Rozanska, M. Rummel, S. Sahoo, D. Sanchez, J.G. Santelj, L. Sasaki, J. Sato, N. Scavino, b. Schaller, G. School of Physics University of Melbourne MelbourneVIC3010 Australia Institute of High Energy Physics Austrian Academy of Sciences Vienna1050 Austria Institute of High Energy Physics CAS 19B Yuquan Road Shijingshan District Beijing China Faculty of Mathematics and Physics Charles University Prague121 16 Czech Republic University of Bonn Bonn53115 Germany Justus-Liebig-Universität Gießen Gießen35392 Germany II. Physikalisches Institut Georg-August-Universität Göttingen Göttingen37073 Germany Deutsches Elektronen-Synchrotron Hamburg22607 Germany Institute for Computer Engineering Heidelberg University Heidelberg69117 Germany Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 Eggenstein-Leopoldshafen Karlsruhe76344 Germany Johannes Gutenberg University Mainz Mainz55099 Germany Ludwig Maximilians University Munich80539 Germany Technical University of Munich Arcisstrasse 21 MunichD-80333 Germany Max Planck Institute for Physics MunichD-80805 Germany Halbleiterlabor der Max-Planck-Gesellschaft Otto-Hahn-Ring 6 MunichD-81739 Germany Indian Institute of Technology Bhubaneswar Satya Nagar India Indian Institute of Technology Madras Chennai600036 India Indian Institute of Technology Guwahati Assam781039 India Malaviya National Institute of Technology Jaipur Jaipur302017 India Punjab Agricultural University Ludhiana141004 India Tata Institute of Fundamental Research Mumbai400005 India Dipartimento di Fisica Università di Pisa PisaI-56127 Italy INFN Sezione di Pisa PisaI-56127 Italy Dipartimento di Fisica Università di Trieste TriesteI-34127 Italy INFN Sezione di Trieste TriesteI-34127 Italy University of Tokyo Kashiwa277-8583 Japan Department of Physics Niigata University Niigata950-2181 Japan Department of Physics Tohoku University Sendai980-8578 Japan Department of Physics University of Tokyo Tokyo113-0033 Japan Tsukuba305-0801 Japan Department of Physics Kyungpook National University Daegu702-701

The belle II experiment at the SuperKeKb accelerator (KeK, Tsukuba, Japan) collected its first e+e− collision data in the spring 2019. The aim of accumulating a 50 times larger data sample than belle at KeKb, a first generation b-Factory, presents substantial challenges to both the collider and the detector, requiring not only state-of-the-art hardware, but also modern software algorithms for tracking and alignment. The broad physics program requires excellent performance of the vertex detector, which is composed of two layers of DePFeT pixels and four layers of doub.e sided-strip sensors. In this contribution, an overview of the vertex detector of belle II and our methods to ensure its optimal performance, are described, and the first results and experiences from the first physics run are presented. © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC bY-NC-ND 4.0).

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A pulsar-based timescale from the International Pulsar Timing Array

arXiv

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arXiv 2019年

作者： Hobbs, G. Guo, L. Caballero, R.N. Coles, W. Lee, K.J. Manchester, R.N. Reardon, D.J. Matsakis, D. Tong, M.L. Arzoumanian, Z. bailes, M. bassa, C.G. bhat, N.D.R. brazier, A. burke-Spolaor, S. Champion, D.J. Chatterjee, S. Cognard, I. Dai, S. Desvignes, G. Dolch, T. Ferdman, R.D. Graikou, e. Guillemot, L. Janssen, G.H. Keith, M.J. Kerr, M. Kramer, M. Lam, M.T. Liu, K. Lyne, A. Lazio, T.J.W. Lynch, R. McKee, J.W. McLaughlin, M.A. Mingarelli, C.M.F. Nice, D.J. Oslowski, S. Pennucci, T.T. Perera, b.b.P. Perrodin, D. Possenti, A. Russell, C.J. Sanidas, S. Sesana, A. Shaifullah, G. Shannon, R.M. Simon, J. Spiewak, R. Stairs, I.H. Stappers, b.W. Swiggum, J.K. Taylor, S.R. Theureau, G. Toomey, L. van Haasteren, R. Wang, J.b. Wang, Y. Zhu, X.J. U.S. Naval Observatory WashingtonD.C. United States CSIRO Astronomy and Space Science Australia Telescope National Facility Box 76 EppingNSW1710 Australia Shanghai Astronomical Observatory CAS Shanghai200030 China Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 BonnD-53121 Germany Kavli institute for Astronomy and Astrophysics Peking University Beijing100871 China Department of Electrical and Computer Engineering University of California at San Diego La JollaCA92093 United States Centre for Astrophysics and Supercomputing Swinburne University of Technology PO Box 218 HawthornVIC3122 Australia National Time Service Center CAS Xi’anShaanxi710600 China Astrophysics Science Division NASA Goddard Space Flight Center GreenbeltMD20771 United States ASTRON Netherlands Institute for Radio Astronomy Oude Hoogeveensedijk 4 PD Dwingeloo7991 Netherlands International Centre for Radio Astronomy Research Curtin University BentleyWA6102 Australia Cornell Center for Astrophysics and Planetary Science Cornell University IthacaNY14853 United States Cornell Center for Advanced Computing Cornell University IthacaNY14853 United States Department of Physics and Astronomy West Virginia University MorgantownWV26506 United States Center for Gravitational Waves and Cosmology West Virginia University Chestnut Ridge Research Building MorgantownWV26505 United States Laboratoire de Physique et Chimie de l’Environnement et de l’Espace LPC2E CNRS- Université d’Orléans OrléansF-45071 France Station de radioastronomie de Nançay Observatoire de Paris PSL University CNRS/INSU NancayF-18330 France Department of Physics Hillsdale College 33 E. College Street HillsdaleMI49242 United States University of East Anglia Norwich Research Park NorwichNR4 7TJ United Kingdom Department of Astrophysics IMAPP Radboud University P.O. Box 9010 Nijmegen6500 GL Netherlands Jodrell Bank Centre for Astrophysics University of Manchester ManchesterM13 9PL Unite

We have constructed a new timescale, TT(IPTA16), based on ob.ervations of radio pulsars presented in the first data release from the International Pulsar Timing Array (IPTA). We used two analysis techniques with independent estimates of the noise models for the pulsar ob.ervations and different algorithms for obtaining the pulsar timescale. The two analyses agree within the estimated uncertainties and both agree with TT(bIPM17), a post-corrected timescale produced by the bureau International des Poids et Mesures (bIPM). We show that both methods could detect significant errors in TT(bIPM17) if they were present. We estimate the stability of the atomic clocks from which TT(bIPM17) is derived using ob.ervations of four rubidium fountain clocks at the US Naval Ob.ervatory. Comparing the power spectrum of TT(IPTA16) with that of these fountain clocks suggests that pulsar-based timescales are unlikely to contribute to the stability of the best timescales over the next decade, but they will remain a valuab.e independent check on atomic timescales. We also find that the stability of the pulsar-based timescale is likely to be limited by our knowledge of solar-system dynamics, and that errors in TT(bIPM17) will not be a limiting factor for the primary goal of the IPTA, which is to search for the signatures of nano-Hertz gravitational waves. Copyright © 2019, The Authors. All rights reserved.

关键词： Pulsars

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Publisher Correction: Ob.ervation of triple J/ψ meson production in proton-proton collisions

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Nature Physics 2023年 461页

作者： A. Tumasyan W. Adam J. W. Andrejkovic T. bergauer S. Chatterjee K. Damanakis M. Dragicevic A. escalante Del Valle R. Frühwirth M. Jeitler N. Krammer L. Lechner D. Liko I. Mikulec P. Paulitsch F. M. Pitters J. Schieck R. Schöfbeck D. Schwarz S. Templ W. Waltenberger C.-e. Wulz V. Chekhovsky A. Litomin V. Makarenko M. R. Darwish e. A. De Wolf T. Janssen T. Kello A. Lelek H. Rejeb Sfar P. Van Mechelen S. Van Putte N. Van Remortel F. b.ekman e. S. bols J. D’Hondt M. Delcourt H. el Faham S. Lowette S. Moortgat A. Morton D. Müller A. R. Sahasransu S. Tavernier W. Van Doninck D. beghin b. bilin b. Clerbaux G. De Lentdecker L. Favart A. K. Kalsi K. Lee M. Mahdavikhorrami I. Makarenko L. Moureaux L. Pétré A. Popov N. Postiau e. Starling L. Thomas M. Vanden bemden C. Vander Velde P. Vanlaer T. Cornelis D. Dobur J. Knolle L. Lamb.echt G. Mestdach M. Niedziela C. Rendón C. Roskas A. Samalan K. Skovpen M. Tytgat b. Vermassen L. Wezenb.ek A. benecke A. bethani G. bruno F. bury C. Caputo P. David C. Delaere I. S. Donertas A. Giammanco K. Jaffel Sa. Jain V. Lemaitre K. Mondal J. Prisciandaro A. Taliercio M. Teklishyn T. T. Tran P. Vischia S. Wertz G. A. Alves C. Hensel A. Moraes P. Rebello Teles W. L. Aldá Júnior M. Alves Gallo Pereira M. barroso Ferreira Filho H. brandao Malbouisson W. Carvalho J. Chinellato e. M. Da Costa G. G. Da Silveira D. De Jesus Damiao V. Dos Santos Sousa S. Fonseca De Souza C. Mora Herrera K. Mota Amarilo L. Mundim H. Nogima A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel F. Torres Da Silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. S. Lemos P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. Shopova G. Sultanov A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov T. Cheng T. Javaid M. Mittal L. Yuan M. Ahmad G. bauer C. Dozen Z. Hu J. Martins Y. Wang K. Yi e. Chapon G. M. Chen H. S. Chen M. Chen F. Iemmi A. Kapoor D. Leggat H. Liao Z.-A. Liu V. Milosevic F. M Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Vienna Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Korea University Seoul Korea Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Department of Physics Tsinghua University Beijing China Institute of High Energy Physics Beijing China University of Florida Gainesville Florida USA Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University Shanghai China University of California Riverside Riverside California USA Rice University Houston Texas USA Zhejiang University Hangzhou China Zhejiang China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo

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The control unit of the KM3NeT data acquisition system

arXiv

引用

arXiv 2019年

作者： Aiello, S. Ameli, F. Andre, M. Androulakis, G. Anghinolfi, M. Anton, G. Ardid, M. Aublin, J. bagatelas, C. barbarino, G. baret, b. basegmez Du Pree, S. bendahman, M. berb.e, e. Van Den berg, A.M. bertin, V. biagi, S. biagioni, A. bissinger, M. boumaaza, J. bourret, S. bouta, M. bouvet, G. bouwhuis, M. bozza, C. brânzaş, H. bruchner, M. bruijn, R. brunner, J. buis, e. buompane, R. busto, J. Calvo, D. Capone, A. Celli, S. Chabab, M. Chau, N. Cherubini, S. Chiarella, V. Chiarusi, T. Circella, M. Cocimano, R. Coelho, J.A.b. Coleiro, A. Colomer Molla, M. Coniglione, R. Coyle, P. Creusot, A. Cuttone, G. D'Onofrio, A. Dallier, R. De Palma, M. Di Palma, I. Díaz, A.F. Diego-Tortosa, D. Distefano, C. Domi, A. Donà, R. Donzaud, C. Dornic, D. Dörr, M. Durocher, M. eberl, T. el bojaddaini, I. eljarrari, H. elsaesser, D. enzenhöfer, A. Fermani, P. Ferrara, G. Filipović, M.D. Franco, A. Fusco, L.A. Gal, T. Garcia Soto, A. Garufi, F. Gialanella, L. Giorgio, e. Gozzini, S.R. Gracia, R. Graf, K. Grasso, D. Grégoire, T. Grella, G. Guderian, D. Guidi, C. Hallmann, S. Hamdaoui, H. Van Haren, H. Heijb.er, A. Hekalo, A. Hernández-Rey, J.J. Hofestädt, J. Huang, F. Illuminati, G. James, C.W. De Jong, M. De Jong, P. Kadler, M. Kalaczyński, P. Kalekin, O. Katz, U.F. Khan Chowdhury, N.R. Van Der Knaap, F. Koffeman, e.N. Kooijman, P. Kouchner, A. Kulikovskiy, V. Lahmann, R. Larosa, G. Le b.eton, R. Leone, F. Leonora, e. Levi, G. Lincetto, M. Lonardo, A. Longhitano, F. Lopez-Coto, D. Maggi, G. Mańczak, J. Mannheim, K. Margiotta, A. Marinelli, A. Markou, C. Martignac, G. Martin, L. Martínez-Mora, J.A. Martini, A. Marzaioli, F. Mazzou, S. Mele, R. Melis, K.W. Migliozzi, P. Migneco, e. Mijakowski, P. Miranda, L.S. Mollo, C.M. Morganti, M. Moser, M. Moussa, A. Muller, R. Musumeci, M. Nauta, L. Navas, S. Nicolau, C.A. Nielsen, C. Fearraigh, b.Ó. Organokov, M. Orlando, A. Panagopoulos, V. Papalashvili, G. Papaleo, R. Pastore, C. INFN Sezione di Catania Via Santa Sofia 64 Catania95123 Italy INFN Sezione di Roma Piazzale Aldo Moro 2 Roma00185 Italy Universitat Politècnica de Catalunya Laboratori d'Aplicacions Bioacústiques Centre Tecnològic de Vilanova i la Geltrú Avda. Rambla Exposició s/n Vilanova i la Geltrú08800 Spain NCSR Demokritos Institute of Nuclear and Particle Physics Ag. Paraskevi Attikis Athens15310 Greece INFN Sezione di Genova Via Dodecaneso 33 Genova16146 Italy Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Centre for Astroparticle Physics Erwin-Rommel-Straße 1 Erlangen91058 Germany Universitat Politècnica de València Instituto de Investigación para la Gestión Integrada de las Zonas Costeras C/ Paranimf 1 Gandia46730 Spain APC Université Paris Diderot CNRS/IN2P3 CEA/IRFU Observatoire de Paris Sorbonne Paris Cité Paris75205 France INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy Università di Napoli "Federico II" Dip. Scienze Fisiche "E. Pancini" Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy Nikhef National Institute for Subatomic Physics PO Box 41882 Amsterdam1009 DB Netherlands University Mohammed V in Rabat Faculty of Sciences 4 av. Ibn Battouta B.P. 1014 R.P Rabat10000 Morocco KVI-CART University of Groningen Groningen Netherlands Aix Marseille Univ CNRS/IN2P3 CPPM Marseille France INFN Laboratori Nazionali del Sud Via S. Sofia 62 Catania95123 Italy University Mohammed I Faculty of Sciences BV Mohammed VI B.P. 717 R.P Oujda60000 Morocco Subatech IMT Atlantique IN2P3-CNRS Université de Nantes 4 rue Alfred Kastler - La Chantrerie Nantes BP20722 44307 France Università di Salerno e INFN Gruppo Collegato di Salerno Dipartimento di Fisica Via Giovanni Paolo II 132 Fisciano84084 Italy ISS Atomistilor 409 MagureleRO-077125 Romania University of Amsterdam Institute of Physics/IHEF PO Box 94216 Amsterdam1090 GE Netherlands TNO

The KM3NeT Collaboration runs a multi-site neutrino ob.ervatory in the Mediterranean Sea. Water Cherenkov particle detectors, deep in the sea and far off the coasts of France and Italy, are already taking data while incremental construction progresses. Data Acquisition Control software is operating off-shore detectors as well as testing and qualification stations for their components. The software, named Control Unit, is highly modular. It can undergo upgrades and reconfiguration with the acquisition running. Interplay with the central database of the Collaboration is obtained in a way that allows for data taking even if Internet links fail. In order to simplify the management of computing resources in the long term, and to cope with possib.e hardware failures of one or more computers, the KM3NeT Control Unit software features a custom dynamic resource provisioning and failover technology, which is especially important for ensuring continuity in case of rare transient events in multi-messenger astronomy. The software architecture relies on ubiquitous tools and broadly adopted technologies and has b.en successfully tested on several operating systems. Copyright © 2019, The Authors. All rights reserved.

关键词： Data acquisition

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Dependence of atmospheric muon rate on seawater depth measured with the first KM3NeT detection units

arXiv

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arXiv 2019年

作者： Ageron, M. Aiello, S. Ameli, F. Andre, M. Androulakis, G. Anghinolfi, M. Anton, G. Ardid, M. Aublin, J. bagatelas, C. barbarino, G. baret, b. basegmez du, S. Pree belias, A. berb.e, e. van Den, A.M. berg bertin, V. van beveren, V. biagi, S. biagioni, A. bianucci, S. billault, M. bissinger, M. de b.er, R. boumaaza, J. bourret, S. bouta, M. bouwhuis, M. bozza, C. brânzaş, H. briel, M. bruchner, M. bruijn, R. brunner, J. buis, e. buompane, R. busto, J. Cacopardo, G. Caillat, L. Calì, C. Calvo, D. Capone, A. Celli, S. Chabab, M. Chau, N. Cherubini, S. Chiarella, V. Chiarusi, T. Circella, M. Cocimano, R. Coelho, J.A.b. Coleiro, A. Colomer, M. Molla Colonges, S. Coniglione, R. Cosquer, A. Coyle, P. Creusot, A. Cuttone, G. D’Amato, C. D’Amico, A. D’Onofrio, A. Dallier, R. de Palma, M. de Sio, C. Di Palma, I. Díaz, A.F. Diego-Tortosa, D. Distefano, C. Domi, A. Donà, R. Donzaud, C. van Dooren, L. Dornic, D. Dörr, M. Durocher, M. eberl, T. van eeden, T. el bojaddaini, I. eljarrari, H. elsaesser, D. enzenhöfer, A. Fermani, P. Ferrara, G. Filipović, M.D. Fusco, L.A. Gajanana, D. Gal, T. Garcia Soto, A. Garufi, F. Gialanella, L. Giorgio, e. Giuliante, A. Gozzini, S.R. Gracia, R. Graf, K. Grasso, D. Grégoire, T. Grella, G. Grimaldi, A. Grmek, A. Guderian, D. Guerzoni, M. Guidi, C. Hallmann, S. Hamdaoui, H. van Haren, H. Heijb.er, A. Hekalo, A. Henry, S. Hernández-Rey, J.J. Hofestädt, J. Huang, F. Huesca, e. Santiago Illuminati, G. James, C.W. Jansweijer, P. Jongen, M. de Jong, M. de Jong, P. Kadler, M. Kalaczynski, P. Kalekin, O. Katz, U.F. Kayzel, F. Keller, P. Khan, N.R. Chowdhury van der Knaap, F. Koffeman, e.N. Kooijman, P. Koopstra, J. Kouchner, A. Kreter, M. Kulikovskiy, V. Meghna, K.K. Lahmann, R. Lamare, P. Larosa, G. Laurence, J. Le b.eton, R. Leone, F. Leonora, e. Levi, G. Librizzi, F. Lincetto, M. Litrico, P. Llorens, C.D. Alvarez Lonardo, A. Longhitano, F. Lopez-Coto, D. Maggi, G. Manczak, J. Mannheim, K. Aix Marseille Univ CNRS/IN2P3 CPPM Marseille France INFN Sezione di Catania Via Santa Sofia 64 Catania95123 Italy INFN Sezione di Roma Piazzale Aldo Moro 2 Roma00185 Italy Universitat Politècnica de Catalunya Laboratori d’Aplicacions Bioacústiques Centre Tecnològic de Vilanova i la Geltrú Avda. Rambla Exposició s/n Vilanova i la Geltrú08800 Spain NCSR Demokritos Institute of Nuclear and Particle Physics Ag. Paraskevi Attikis Athens15310 Greece INFN Sezione di Genova Via Dodecaneso 33 Genova16146 Italy Friedrich-Alexander-Universität Erlangen-Nürnberg Erlangen Centre for Astroparticle Physics Erwin-Rommel-Straße 1 Erlangen91058 Germany Universitat Politècnica de València Instituto de Investigación para la Gestión Integrada de las Zonas Costeras C/ Paranimf 1 Gandia46730 Spain APC Université Paris Diderot CNRS/IN2P3 CEA/IRFU Observatoire de Paris Sorbonne Paris Cité Paris75205 France INFN Sezione di Napoli Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy Università di Napoli "Federico II" Dip. Scienze Fisiche "E. Pancini" Complesso Universitario di Monte S. Angelo Via Cintia ed. G Napoli80126 Italy Nikhef National Institute for Subatomic Physics PO Box 41882 Amsterdam1009 DB Netherlands KVI-CART University of Groningen Groningen Netherlands INFN Laboratori Nazionali del Sud Via S. Sofia 62 Catania95123 Italy INFN Sezione di Pisa Largo Bruno Pontecorvo 3 Pisa56127 Italy University Mohammed V in Rabat Faculty of Sciences 4 av. Ibn Battouta B.P. 1014 RabatR.P. 10000 Morocco University Mohammed I Faculty of Sciences BV Mohammed VI B.P. 717 R.P Oujda60000 Morocco Università di Salerno e INFN Gruppo Collegato di Salerno Dipartimento di Fisica Via Giovanni Paolo II 132 Fisciano84084 Italy ISS Atomistilor 409 MagureleRO-077125 Romania University of Amsterdam Institute of Physics/IHEF PO Box 94216 Amsterdam1090 GE Netherlands TNO Technical Sciences PO Box 155 Delft2600 AD Netherlands Un

KM3NeT is a research infrastructure located in the Mediterranean Sea, that will consist of two deep-sea Cherenkov neutrino detectors. With one detector (ARCA), the KM3NeT Collaboration aims at identifying and studying TeV-PeV astrophysical neutrino sources. With the other detector (ORCA), the neutrino mass ordering will be determined by studying GeV-scale atmospheric neutrino oscillations. The first KM3NeT detection units were deployed at the Italian and French sites between 2015 and 2017. In this paper, a description of the detector is presented, together with a summary of the procedures used to calibrate the detector in-situ. Finally, the dependence of muon rate between 2232−3386 m seawater depth is compared with a parameterisation of the underwater muon flux. Copyright © 2019, The Authors. All rights reserved.

关键词： Neutrons

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100.29 Some odd series for π

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The Mathematical Gazette 2016年第549期100卷 496-500页

作者： Amrik Nimbran Paul Levrie B3/304 Palm Grove Heights Ardee City Sector 52 Gurgaon (Haryana) India122002 Faculty of Applied Engineering University of Antwerp B-2020 Antwerpen Belgium Department of Computer Science KU Leuven P.O. Box 2402 B-3001 Heverlee Belgium e-mail: paul.levrie@cs.kuleuven.be

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Logo based document image retrieval using singular value decomposition features

Logo based document image retrieval using singular value dec...

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International Conference on Signal and Information Processing (IConSIP)

作者： Umesh D. Dixit M. S. Shirdhonkar Department of Electronics & Communication Engineering B.L.D.E.A's V. P. Dr. P. G. Halakatti CET Bijapur India Department of Computer Science and Engineering B.L.D.E.A's V. P. Dr. P. G. Halakatti CET Bijapur India

ISBN: (纸本)9781509015238

Growth in information technology has increased repository of document images in various organizations, digital libraries and government offices. Logo based document image retrieval provides an easier way of searching and browsing of these documents. Duty noise, large ink blobs and choosing appropriate features are major challenges to implement logo based retrieval of document images. This paper presents a novel method for logo based document image retrieval, when a query document containing logo is given as an input. Logo from the query document is extracted based on energy contributed by connected components of document image after using Singular Value Decomposition (SVD). For retrieval of documents we propose a method using two set of features (i) Derived Singular Value Decomposition (SVD) features of extracted logo and (ii) Singular values of singular matrix after applying SVD to an extracted logo. Canberra distance is used for matching features of query document with the features of database of documents. Proposed method is tested for publicly availab.e database Tobacco-800 and results are compared with current state of art. Using derived features of SVD of an extracted logo we got 76% precision; however 84% precision is achieved for same set of documents using singular values of extracted logo.

关键词： Feature extraction Image retrieval Matrix decomposition Singular value decomposition Transforms Silicon

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Ob.ervation of the bs0→X(3872)ϕ Decay

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Physical Review Letters 2020年第15期125卷 152001-152001页

作者： A. M. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer M. Dragicevic J. erö A. escalante Del Valle R. Frühwirth M. Jeitler N. Krammer L. Lechner D. Liko T. Madlener I. Mikulec F. M. Pitters N. Rad J. Schieck R. Schöfbeck M. Spanring S. Templ W. Waltenberger C.-e. Wulz M. Zarucki V. Chekhovsky A. Litomin V. Makarenko J. Suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek M. Pieters H. Rejeb Sfar H. Van Haevermaet P. Van Mechelen S. Van Putte N. Van Remortel F. b.ekman e. S. bols S. S. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi S. Lowette I. Marchesini S. Moortgat A. Morton Q. Python S. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. Grebenyuk A. K. Kalsi I. Makarenko L. Moureaux L. Pétré A. Popov N. Postiau e. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom L. Wezenb.ek T. Cornelis D. Dobur M. Gruchala I. Khvastunov M. Niedziela C. Roskas K. Skovpen M. Tytgat W. Verbeke b. Vermassen M. Vit G. bruno F. bury C. Caputo P. David C. Delaere M. Delcourt I. S. Donertas A. Giammanco V. Lemaitre K. Mondal J. Prisciandaro A. Taliercio M. Teklishyn P. Vischia S. Wuyckens J. Zobec G. A. Alves G. Correia Silva C. Hensel A. Moraes W. L. Aldá Júnior e. belchior batista Das Chagas H. brandao Malbouisson W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima P. Rebello Teles L. J. Sanchez Rosas A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da Silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. S. Lemos P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev I. Atanasov R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. Shopova G. Sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov W. Fang Q. Guo H. Wang L. Yuan M. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China Rutgers The State University of New Jersey Piscataway New Jersey USA Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE)—Fudan University Shanghai China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Ener

Using a data sample of proton-proton collisions at s=13 TeV, corresponding to an integrated luminosity of 140 fb−1 collected by the CMS experiment in 2016–2018, the bs0→X(3872)ϕ decay is ob.erved. Decays into J/ψπ+π− and K+K− are used to reconstruct, respectively, the X(3872) and ϕ. The ratio of the product of branching fractions b[bs0→X(3872)ϕ]b[X(3872)→J/ψπ+π−] to the product b[bs0→ψ(2S)ϕ]b[ψ(2S)→J/ψπ+π−] is measured to be [2.21±0.29(stat)±0.17(syst)]%. The ratio b[bs0→X(3872)ϕ]/b[b0→X(3872)K0] is found to be consistent with one, while the ratio b[bs0→X(3872)ϕ]/b[b+→X(3872)K+] is two times smaller. This suggests a difference in the production dynamics of the X(3872) in b0 and bs0 meson decays compared to b+. The reported ob.ervation may shed new light on the nature of the X(3872) particle.

关键词： branching fraction bottom quark Strange quark Hadron colliders

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Measurements of tt¯H Production and the CP Structure of the Yukawa Interaction between the Higgs boson and Top Quark in the Diphoton Decay Channel

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Physical Review Letters 2020年第6期125卷 061801-061801页

作者： A. M. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer M. Dragicevic J. erö A. escalante Del Valle M. Flechl R. Frühwirth M. Jeitler N. Krammer I. Krätschmer D. Liko T. Madlener I. Mikulec N. Rad J. Schieck R. Schöfbeck M. Spanring W. Waltenberger C.-e. Wulz M. Zarucki V. Drugakov V. Mossolov J. Suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek M. Pieters H. Rejeb Sfar H. Van Haevermaet P. Van Mechelen S. Van Putte N. Van Remortel F. b.ekman e. S. bols S. S. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi S. Lowette I. Marchesini S. Moortgat Q. Python S. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. K. Kalsi L. Moureaux A. Popov N. Postiau e. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom T. Cornelis D. Dobur I. Khvastunov M. Niedziela C. Roskas K. Skovpen M. Tytgat W. Verbeke b. Vermassen M. Vit G. bruno C. Caputo P. David C. Delaere M. Delcourt A. Giammanco V. Lemaitre J. Prisciandaro A. Saggio P. Vischia J. Zobec G. A. Alves G. Correia Silva C. Hensel A. Moraes e. belchior batista Das Chagas W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da Silveira D. De Jesus Damiao C. De Oliveira Martins S. Fonseca De Souza H. Malbouisson J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima W. L. Prado Da Silva P. Rebello Teles L. J. Sanchez Rosas A. Santoro A. Sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da Silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. S. Lemos P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. Shopova G. Sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov W. Fang X. Gao L. Yuan M. Ahmad Z. Hu Y. Wang G. M. Chen H. S. Chen M. Chen C. H. Jiang D. Leggat H. Liao Z. Liu A. Spiezia J. Tao e. Yazgan H. Zhang S. Zhang J. Zhao A. Agapitos Y. ban G. Chen A. Levin J Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China National Centre for Physics Quaid-I-Azam University Islamabad Pakistan Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt National Institute of Chemical Physics and Biophysics Tallinn Estonia Department of Physics University of Helsinki Helsinki Finland Helsinki Institute of Physics Helsinki Finland Lappeenranta University of Technology Lappeenranta Finland IRFU CEA Un

The first ob.ervation of the tt¯H process in a single Higgs boson decay channel with the full reconstruction of the final state (H→γγ) is presented, with a significance of 6.6 standard deviations (σ). The CP structure of Higgs boson couplings to fermions is measured, resulting in an exclusion of the pure CP-odd structure of the top Yukawa coupling at 3.2σ. The measurements are based on a sample of proton-proton collisions at a center-of-mass energy s=13 TeV collected by the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb−1. The cross section times branching fraction of the tt¯H process is measured to be σtt¯Hbγγ=1.56−0.32+0.34 fb, which is compatib.e with the standard model prediction of 1.13−0.11+0.08 fb. The fractional contribution of the CP-odd component is measured to be fCPHtt=0.00±0.33.

关键词： Particle production Higgs bosons Photons Top quark

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Ob.ervation of the Production of Three Massive Gauge bosons at s=13 TeV

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Physical Review Letters 2020年第15期125卷 151802-151802页

作者： A. M. Sirunyan A. Tumasyan W. Adam F. Ambrogi T. bergauer M. Dragicevic J. erö A. escalante Del Valle R. Frühwirth M. Jeitler N. Krammer L. Lechner D. Liko T. Madlener I. Mikulec F. M. Pitters N. Rad J. Schieck R. Schöfbeck M. Spanring S. Templ W. Waltenberger C.-e. Wulz M. Zarucki V. Chekhovsky A. Litomin V. Makarenko J. Suarez Gonzalez M. R. Darwish e. A. De Wolf D. Di Croce X. Janssen T. Kello A. Lelek M. Pieters H. Rejeb Sfar H. Van Haevermaet P. Van Mechelen S. Van Putte N. Van Remortel F. b.ekman e. S. bols S. S. Chhibra J. D’Hondt J. De Clercq D. Lontkovskyi S. Lowette I. Marchesini S. Moortgat A. Morton Q. Python S. Tavernier W. Van Doninck P. Van Mulders D. beghin b. bilin b. Clerbaux G. De Lentdecker H. Delannoy b. Dorney L. Favart A. Grebenyuk A. K. Kalsi I. Makarenko L. Moureaux L. Pétré A. Popov N. Postiau e. Starling L. Thomas C. Vander Velde P. Vanlaer D. Vannerom L. Wezenb.ek T. Cornelis D. Dobur M. Gruchala I. Khvastunov M. Niedziela C. Roskas K. Skovpen M. Tytgat W. Verbeke b. Vermassen M. Vit G. bruno F. bury C. Caputo P. David C. Delaere M. Delcourt I. S. Donertas A. Giammanco V. Lemaitre K. Mondal J. Prisciandaro A. Taliercio M. Teklishyn P. Vischia S. Wuyckens J. Zobec G. A. Alves G. Correia Silva C. Hensel A. Moraes W. L. Aldá Júnior e. belchior batista Das Chagas H. brandao Malbouisson W. Carvalho J. Chinellato e. Coelho e. M. Da Costa G. G. Da Silveira D. De Jesus Damiao S. Fonseca De Souza J. Martins D. Matos Figueiredo M. Medina Jaime M. Melo De Almeida C. Mora Herrera L. Mundim H. Nogima P. Rebello Teles L. J. Sanchez Rosas A. Santoro S. M. Silva Do Amaral A. Sznajder M. Thiel e. J. Tonelli Manganote F. Torres Da Silva De Araujo A. Vilela Pereira C. A. bernardes L. Calligaris T. R. Fernandez Perez Tomei e. M. Gregores D. S. Lemos P. G. Mercadante S. F. Novaes Sandra S. Padula A. Aleksandrov G. Antchev I. Atanasov R. Hadjiiska P. Iaydjiev M. Misheva M. Rodozov M. Shopova G. Sultanov M. bonchev A. Dimitrov T. Ivanov L. Litov b. Pavlov P. Petkov A. Petrov W. Fang Q. Guo H. Wang L. Yuan M. Yerevan Physics Institute Yerevan Armenia Institut für Hochenergiephysik Wien Austria Institute for Nuclear Problems Minsk Belarus Universiteit Antwerpen Antwerpen Belgium Vrije Universiteit Brussel Brussel Belgium Université Libre de Bruxelles Bruxelles Belgium Ghent University Ghent Belgium Université Catholique de Louvain Louvain-la-Neuve Belgium Centro Brasileiro de Pesquisas Fisicas Rio de Janeiro Brazil Universidade do Estado do Rio de Janeiro Rio de Janeiro Brazil Universidade Estadual Paulista São Paulo Brazil Universidade Federal do ABC São Paulo Brazil Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences Sofia Bulgaria University of Sofia Sofia Bulgaria Beihang University Beijing China University of Illinois at Chicago (UIC) Chicago Illinois USA Department of Physics Tsinghua University Beijing China University of Virginia Charlottesville Virginia USA Institute of High Energy Physics Beijing China Massachusetts Institute of Technology Cambridge Massachusetts USA State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China The University of Kansas Lawrence Kansas USA Sun Yat-Sen University Guangzhou China Institute of Modern Physics and Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) - Fudan University Shanghai China Zhejiang University Hangzhou China Universidad de Los Andes Bogota Colombia Universidad de Antioquia Medellin Colombia University of Split Faculty of Electrical Engineering Mechanical Engineering and Naval Architecture Split Croatia University of Split Faculty of Science Split Croatia Institute Rudjer Boskovic Zagreb Croatia University of Cyprus Nicosia Cyprus Charles University Prague Czech Republic Escuela Politecnica Nacional Quito Ecuador Universidad San Francisco de Quito Quito Ecuador Academy of Scientific Research and Technology of the Arab Republic of Egypt Egyptian Network of High Energy Physics Cairo Egypt Center for High Energy Phys

The first ob.ervation is reported of the combined production of three massive gauge bosons (VVV with V=W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis is based on a data sample recorded by the CMS experiment at the CeRN LHC corresponding to an integrated luminosity of 137 fb−1. The searches for individual WWW, WWZ, WZZ, and ZZZ production are performed in final states with three, four, five, and six leptons (electrons or muons), or with two same-sign leptons plus one or two jets. The ob.erved (expected) significance of the combined VVV production signal is 5.7 (5.9) standard deviations and the corresponding measured cross section relative to the standard model prediction is 1.02−0.23+0.26. The significances of the individual WWW and WWZ production are 3.3 and 3.4 standard deviations, respectively. Measured production cross sections for the individual triboson processes are also reported.

关键词： W & Z bosons Hadron colliders

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