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Principal component analysis of the nonlinear coupling of harmonic modes in heavy-ion collisions

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arXiv 2017年

作者： Bożek, Piotr AGH University of Science and Technology Faculty of Physics and Applied Computer Science al. Mickiewicza 30 Krakow30-059 Poland

The principal component analysis of flow correlations in heavy-ion collisions is studied. The correlation matrix of harmonic flow is generalized to correlations involving several different flow vectors. The method can be applied to study the nonlinear coupling between different harmonic modes in a double differential way in transverse momentum or pseudorapidity. The procedure is illustrated with results from the hydrodynamic model applied to Pb+Pb collisions at √s = 2760 GeV. Three examples of generalized correlations matrices in transverse momentum are constructed corresponding to the coupling of v22 and v4, of v2v3 and v5, or of v23, v33, and v6. The principal component decomposition is applied to the correlation matrices and the dominant modes are calculated. Copyright © 2017, The Authors. All rights reserved.

关键词： Colliding beam accelerators

Erratum to: Measurement of ψ(2S) meson production in pp collisions at s=7TeV

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The European Physical Journal C 2020年第1期80卷 1-7页

作者： Aaij, R. Beteta, C. Abellán Adeva, B. Adinolfi, M. Adrover, C. Affolder, A. Ajaltouni, Z. Albrecht, J. Alessio, F. Alexander, M. Alkhazov, G. Cartelle, P. Alvarez Jr, A. A. Alves Amato, S. Amhis, Y. Anderson, J. Andrianala, F. Appleby, R. B. Archilli, F. Arrabito, L. Artamonov, A. Artuso, M. Aslanides, E. Auriemma, G. Bachmann, S. Back, J. J. Bailey, D. S. Balagura, V. Baldini, W. Barlow, R. J. Barschel, C. Barsuk, S. Barter, W. Bates, A. Bauer, Th. Bay, A. Bediaga, I. Belogurov, S. Belous, K. Belyaev, I. Ben-Haim, E. Benayoun, M. Bencivenni, G. Benson, S. Benton, J. Bernet, R. Bettler, M. O. Beuzekom, M. van Bien, A. Bifani, S. Bizzeti, A. Bjørnstad, P. M. Blake, T. Blanc, F. Blanks, C. Blouw, J. Blusk, S. Bobrov, A. Bocci, V. Bondar, A. Bondar, N. Bonivento, W. Borghi, S. Borgia, A. Bowcock, T. J. V. Bozzi, C. Brambach, T. Brand, J. van den Bressieux, J. Brett, D. Britsch, M. Britton, T. Brook, N. H. Brown, H. Bursche, A. Buytaert, J. Büchler-Germann, A. Cadeddu, S. Callot, O. Calvi, M. Gomez, M. Calvo Camboni, A. Campana, P. Carbone, A. Carboni, G. Cardinale, R. Cardini, A. Carson, L. Akiba, K. Carvalho Casse, G. Cattaneo, M. Cauet, Ch. Charles, M. Charpentier, Ph. Chiapolini, N. Chrzaszcz, M. Ciambrone, P. Ciba, K. Vidal, X. Cid Ciezarek, G. Clarke, P. E. L. Clemencic, M. Cliff, H. V. Closier, J. Coca, C. Coco, V. Cogan, J. Collins, P. Comerma-Montells, A. Constantin, F. Cook, A. Coombes, M. Corti, G. Couturier, B. Cowan, G. A. Currie, R. D’Ambrosio, C. David, P. David, P. N. Y. De Aguiar Francisco, O. De Bruyn, K. De Cian, M. De Lorenzi, F. De Miranda, J. M. De Paula, L. De Simone, P. Decamp, D. Deckenhoff, M. Degaudenzi, H. Buono, L. Del Deplano, C. Derkach, D. Deschamps, O. Dettori, F. Dickens, J. Dijkstra, H. Batista, P. Diniz Bonal, F. Domingo Donleavy, S. Dordei, F. Suárez, A. Dosil Dossett, D. Dovbnya, A. Dupertuis, F. Dzhelyadin, R. Dziurda, A. Easo, S. Egede, U. Egorychev, V. Eidelman, S. Eijk, D. van Eisele, F. Eisenhardt, S. Ekelhof, R. Eklund, L. Elsasser, Ch. Elsby, D. Pereira, D. Esperante Falab Nikhef National Institute for Subatomic Physics Amsterdam The Netherlands ICCUB Universitat de Barcelona Barcelona Spain Instituto Galego de Física de Altas Enerxías (IGFAE) Universidade de Santiago de Compostela Santiago de Compostela Spain H.H. Wills Physics Laboratory University of Bristol Bristol UK Aix Marseille Univ CNRS/IN2P3 CPPM Marseille France Oliver Lodge Laboratory University of Liverpool Liverpool UK Université Clermont Auvergne CNRS/IN2P3 LPC Clermont-Ferrand France European Organization for Nuclear Research (CERN) Geneva Switzerland School of Physics and Astronomy University of Glasgow Glasgow UK Petersburg Nuclear Physics Institute NRC Kurchatov Institute (PNPI NRC KI) Gatchina Russia INFN Sezione di Roma La Sapienza Rome Italy Universidade Federal do Rio de Janeiro (UFRJ) Rio de Janeiro Brazil Institute of Physics Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne Switzerland Physik-Institut Universität Zürich Zürich Switzerland School of Physics and Astronomy University of Manchester Manchester UK INFN Laboratori Nazionali di Frascati Frascati Italy CC-IN2P3 CNRS/IN2P3 Lyon-Villeurbanne France Institute for High Energy Physics NRC Kurchatov Institute (IHEP NRC KI) Protvino Russia Protvino Russia Syracuse University Syracuse USA Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Department of Physics University of Warwick Coventry UK Institute of Theoretical and Experimental Physics NRC Kurchatov Institute (ITEP NRC KI) Moscow Russia INFN Sezione di Ferrara Ferrara Italy LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Cavendish Laboratory University of Cambridge Cambridge UK Centro Brasileiro de Pesquisas Físicas (CBPF) Rio de Janeiro Brazil LPNHE Sorbonne Université Paris Diderot Sorbonne Paris Cité CNRS/IN2P3 Paris France School of Physics and Astronomy University of Edinburgh Edinburgh UK INFN Sezione di Firenze Firenze Italy School of Physics University

This erratum corrects measurements of the prompt and secondary (from-b).

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Search for bottom-type, vectorlike quark pair production in a fully hadronic final state in proton-proton collisions at s=13 TeV

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Physical Review D 2020年第11期102卷 112004-112004页

作者： A. M. Sirunyan A. Tumasyan W. Adam 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. Blekman 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 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. Wezenbeek 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. Wertz S. Wuyckens G. A. Alves 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 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 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. Ahmad Z. Hu Y. Wang E. Chapon G. M. Chen H. S. Chen M. Chen T. Javaid A. Kapoor D. 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

A search is described for the production of a pair of bottom-type vectorlike quarks (VLQs), each decaying into a b or b¯ quark and either a Higgs or a Z boson, with a mass greater than 1000 GeV. The analysis is based on data from proton-proton collisions at a 13 TeV center-of-mass energy recorded at the CERN LHC, corresponding to a total integrated luminosity of 137 fb−1. As the predominant decay modes of the Higgs and Z bosons are to a pair of quarks, the analysis focuses on final states consisting of jets resulting from the six quarks produced in the events. Since the two jets produced in the decay of a highly Lorentz-boosted Higgs or Z boson can merge to form a single jet, nine independent analyses are performed, categorized by the number of observed jets and the reconstructed event mode. No signal in excess of the expected background is observed. Lower limits are set on the VLQ mass at 95% confidence level equal to 1570 GeV in the case where the VLQ decays exclusively to a b quark and a Higgs boson, 1390 GeV for when it decays exclusively to a b quark and a Z boson, and 1450 GeV for when it decays equally in these two modes. These limits represent significant improvements over the previously published VLQ limits.

关键词： Bottom quark Hypothetical particles Hadron colliders

Generative adversarial network based on chaotic time series

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arXiv 2019年

作者： Naruse, Makoto Matsubara, Takashi Chauvet, Nicolas Kanno, Kazutaka Yang, Tianyu Uchida, Atsushi Department of Information Physics and Computing Graduate School of Information Science and Technology University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-8656 Japan Department of Mathematical Engineering and Information Physics Faculty of Engineering University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-8656 Japan Department of Computational Science Graduate School of System Informatics Kobe University 1- 1 Rokkodai Nada Kobe Hyogo657-8501 Japan Department of Information and Computer Sciences Saitama University 255 Shimo-Okubo Sakura-ku Saitama Saitama338-8570 Japan

Generative adversarial network (GAN) is gaining increased importance in artificially constructing natural images and related functionalities wherein two networks called generator and discriminator are evolving through adversarial mechanisms. Using deep convolutional neural networks and related techniques, high-resolution, highly realistic scenes, human faces, among others have been generated. While GAN in general needs a large amount of genuine training data sets, it is noteworthy that vast amounts of pseudorandom numbers are required. Here we utilize chaotic time series generated experimentally by semiconductor lasers for the latent variables of GAN whereby the inherent nature of chaos can be reflected or transformed into the generated output data. We show that the similarity in proximity, which is a degree of robustness of the generated images with respects to a minute change in the input latent variables, is enhanced while the versatility as a whole is not severely degraded. Furthermore, we demonstrate that the surrogate chaos time series eliminates the signature of generated images that is originally observed corresponding to the negative autocorrelation inherent in the chaos sequence. We also discuss the impact of utilizing chaotic time series in retrieving images from the trained generator. Copyright © 2019, The Authors. All rights reserved.

关键词： Generative adversarial networks

Natural measures of alignment

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arXiv 2018年

作者： Kycia, R.A. Tabor, Z. Department of Mathematics and Statistics Masaryk University Brno Czech Republic Cracow University of Technology Faculty of Physics Mathematics and Computer Science KrakówPL-31155 Poland

Natural coordinate system will be proposed. In this coordinate system alignment procedure of a device and a detector can be easily performed. This approach is generalization of previous specific formulas in the field of calibration and provide top level description of the procedure. A basic example application to linac therapy plan is also provided. Copyright © 2018, The Authors. All rights reserved.

关键词： Calibration

Erratum to: Measurement of meson production in pp collisions at

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The European Physical Journal C 2020年第1期80卷 1-7页

This erratum corrects measurements of the prompt and secondary (from-b).

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CABS-flex 2.0: a web server for fast simulations of flexibility of protein structures

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arXiv 2018年

作者： Kuriata, Aleksander Gierut, Aleksandra Maria Oleniecki, Tymoteusz Ciemny, Maciej Pawel Kolinski, Andrzej Kurcinski, Mateusz Kmiecik, Sebastian Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Warsaw Poland Faculty of Physics Astronomy and Applied Computer Science Jagiellonian University Krakow Poland College of Inter-Faculty Individual Studies in Mathematics and Natural Sciences University of Warsaw Warsaw Poland Faculty of Physics University of Warsaw Warsaw Poland

Classical simulations of protein flexibility remain computationally expensive, especially for large proteins. A few years ago, we developed a fast method for predicting protein structure fluctuations that uses a single protein model as the input. The method has been made available as the CABS-flex web server and applied in numerous studies of protein structure-function relationships. Here, we present a major update of the CABS-flex web server to version 2.0. The new features include: extension of the method to significantly larger and multimeric proteins, customizable distance restraints and simulation parameters, contact maps and a new, enhanced web server interface. CABS-flex 2.0 is freely available at http://***/CABSflex2 Copyright © 2018, The Authors. All rights reserved.

关键词： Web services

Interferometry correlations in central p+Pb collisions

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arXiv 2017年

作者： Bozek, Piotr Bysiak, Sebastian AGH University of Science and Technology Faculty of Physics and Applied Computer Science al. Mickiewicza 30 Krakow30-059 Poland

We present results on interferometry corre- lations for pions emitted in central p+Pb collisions at √sNN = 5:02 TeV in a 3+1 dimensional viscous hydro- dynamic model with initial conditions from the Glauber Monte Carlo model. The correlation function is calcu- lated as a function of the pion pair rapidity. The ex- tracted interferometry radii show a weak rapidity de- pendence, reecting the lack of boost invariance of the pion distribution. A cross-term between the out and long directions is found to be nonzero. The results ob- tained in the hydrodynamic model are in fair agreement with recent data of the ATLAS Collaboration. Copyright © 2017, The Authors. All rights reserved.

关键词： Hadrons

Search for CP violation in Ξc+ → pK−π+ decays using model-independent techniques

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arXiv 2020年

作者： Aaij, R. Abellán Beteta, C. Ackernley, T. Adeva, B. Adinolfi, M. Afsharnia, H. Aidala, C.A. Aiola, S. Ajaltouni, Z. Akar, S. Albicocco, P. Albrecht, J. Alessio, F. Alexander, M. Alfonso Albero, A. Alkhazov, G. Alvarez Cartelle, P. Alves, A.A. Amato, S. Amhis, Y. An, L. Anderlini, L. Andreassi, G. Andreotti, M. Archilli, F. Arnau Romeu, J. Artamonov, A. Artuso, M. Arzymatov, K. Aslanides, E. Atzeni, M. Audurier, B. Bachmann, S. Back, J.J. Baker, S. Balagura, V. Baldini, W. Baranov, A. Barlow, R.J. Barsuk, S. Barter, W. Bartolini, M. Baryshnikov, F. Basels, J.M. Bassi, G. Batozskaya, V. Batsukh, B. Battig, A. Battista, V. Bay, A. Becker, M. Bedeschi, F. Bediaga, I. Beiter, A. Bel, L.J. Belavin, V. Belin, S. Beliy, N. Bellee, V. Belous, K. Belyaev, I. Bencivenni, G. Ben-Haim, E. Benson, S. Beranek, S. Berezhnoy, A. Bernet, R. Berninghoff, D. Bernstein, H.C. Bertella, C. Bertholet, E. Bertolin, A. Betancourt, C. Betti, F. Bettler, M.O. Bezshyiko, I.A. Bhasin, S. Bhom, J. Bieker, M.S. Bifani, S. Billoir, P. Birnkraut, A. Bizzeti, A. Bjørn, M. Blago, M.P. Blake, T. Blanc, F. Blusk, S. Bobulska, D. Bocci, V. Boente Garcia, O. Boettcher, T. Boldyrev, A. Bondar, A. Bondar, N. Borghi, S. Borisyak, M. Borsato, M. Borsuk, J.T. Boubdir, M. Bowcock, T.J.V. Bozzi, C. Bradley, M.J. Braun, S. Brea Rodriguez, A. Brodski, M. Brodzicka, J. Brossa Gonzalo, A. Brundu, D. Buchanan, E. Büchler-Germann, A. Buonaura, A. Burr, C. Bursche, A. Butkevich, A. Butter, J.S. Buytaert, J. Byczynski, W. Cadeddu, S. Cai, H. Calabrese, R. Calero Diaz, L. Cali, S. Calladine, R. Calvi, M. Calvo Gomez, M. Camargo Magalhaes, P. Camboni, A. Campana, P. Campora Perez, D.H. Campoverde Quezada, A.F. Capriotti, L. Carbone, A. Carboni, G. Cardinale, R. Cardini, A. Carli, I. Carniti, P. Carvalho Akiba, K. Casais Vidal, A. Casse, G. Cattaneo, M. Cavallero, G. Celani, S. Cenci, R. Cerasoli, J. Chapman, M.G. Charles, M. Charpentier, P.H. Chatzikonstantinidis, G. Rio de Janeiro Brazil Rio de Janeiro Brazil Center for High Energy Physics Tsinghua University Beijing China School of Physics State Key Laboratory of Nuclear Physics and Technology Peking University Beijing China University of Chinese Academy of Sciences Beijing China Beijing China Institute of Particle Physics Central China Normal University WuhanHubei China Univ. Grenoble Alpes Univ. Savoie Mont Blanc CNRS IN2P3-LAPP Annecy France Université Clermont Auvergne CNRS/IN2P3 LPC Clermont-Ferrand France Aix Marseille Univ CNRS/IN2P3 CPPM Marseille France Université Paris-Saclay CNRS/IN2P3 IJCLab Orsay France LPNHE Sorbonne Université Paris Diderot Sorbonne Paris Cité CNRS/IN2P3 Paris France I. Physikalisches Institut RWTH Aachen University Aachen Germany Fakultät Physik Technische Universität Dortmund Dortmund Germany Heidelberg Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany School of Physics University College Dublin Dublin Ireland INFN Sezione di Bari Bari Italy INFN Sezione di Bologna Bologna Italy INFN Sezione di Ferrara Ferrara Italy INFN Sezione di Firenze Firenze Italy INFN Laboratori Nazionali di Frascati Frascati Italy INFN Sezione di Genova Genova Italy INFN Sezione di Milano-Bicocca Milano Italy INFN Sezione di Milano Milano Italy INFN Sezione di Cagliari Monserrato Italy INFN Sezione di Padova Padova Italy INFN Sezione di Pisa Pisa Italy INFN Sezione di Roma Tor Vergata Roma Italy INFN Sezione di Roma La Sapienza Roma Italy Nikhef National Institute for Subatomic Physics Amsterdam Netherlands Nikhef National Institute for Subatomic Physics VU University Amsterdam Amsterdam Netherlands Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences Kraków Poland AGH - University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Warsaw Poland Horia Hulubei National Institute of Physics and Nuclear Engineering Buchare

A first search for CP violation in the Cabibbo-suppressed Ξc+ → pK−π+ decay is performed using both a binned and an unbinned model-independent technique in the Dalitz plot. The studies are based on a sample of proton-proton collision data, corresponding to an integrated luminosity of 3.0 fb−1, and collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The data are consistent with the hypothesis of no CP violation. Copyright © 2020, The Authors. All rights reserved.

关键词： Supersymmetry