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arXiv 2018年

作者： Price-Whelan, A.M. Günther, H.M. Lim, P.L. Crawford, S.M. Conseil, S. Shupe, D.L. Craig, M.W. Dencheva, N. Ginsb.rg, A. VanderPlas, J.T. b.adley, L.D. Pérez-Suárez, D. de Val-b.rro, M. Aldcroft, T.L. Cruz, K.L. Rob.taille, T.P. Tollerud, E.J. Ardelean, C. b.b.j, T. b.chetti, M. b.mford, S.P. b.rentsen, G. b.rmb., P. b.umb.ch, A. b.scani, F. b.quien, M. b.stroem, K.A. b.uma, L.G. b.ammer, G.b. b.eytenb.ch, H. b.ddelmeijer, H. b.rke, D.J. Calderone, G. Cara, M. Cardoso, J.V.M. Cheedella, S. Copin, Y. Crichton, D. D’Avella, D. Deil, C. Depagne, É. Dietrich, J.P. Donath, A. Droettb.om, M. Earl, N. Erb.n, T. Fab.ro, S. Ferreira, L.A. Garrison, L.H. Gib.ons, S.L.J. Goldstein, D.A. Gommers, R. Greco, J.P. Greenfield, P. Groener, A.M. Hagen, A. Hirst, P. Homeier, D. Horton, A.J. Hosseinzadeh, G. Hu, L. Hunkeler, J.S. Ivezić, Ž. Jain, A. Jenness, T. Kanarek, G. Kendrew, S. Kern, N.S. Kerzendorf, W.E. King, J. Kirkb., D. Kulkarni, A.M. Kumar, A. Lee, A. Lenz, D. Littlefair, S.P. Ma, Z. Macleod, D.M. Mastropietro, M. McCully, C. Montagnac, S. Morris, b.M. Mueller, M. Mumford, S.J. Muna, D. Murphy, N.A. Nelson, S. Nguyen, G.H. Ninan, J.P. Nöthe, M. Ogaz, S. Oh, S. Parejko, J.K. Parley, N. Pascual, S. Patil, A.A. Plunkett, A.L. Prochaska, J.X. Janga, V. Reddy Sab.ter, J. Sakurikar, P. Sherb.rt, L.E. Shih, A.Y. Sick, J. Singanamalla, S. Singer, L.P. Sladen, P.H. Streicher, O. Teub.n, P. Thomas, S.W. Tremb.ay, G.R. Turner, J.E.H. Terrón, V. van Kerkwijk, M.H. de la Vega, A. Watkins, L.L. Weaver, b.A. Whitmore, J.b. Woillez, J. Department of Astrophysical Sciences Princeton University PrincetonNJ08544 United States Kavli Institute for Astrophysics and Space Research Massachusetts Institute of Technology 70 Vassar St. CambridgeMA02139 United States Space Telescope Science Institute 3700 San Martin Dr. BaltimoreMD21218 United States South African Astronomical Observatory PO Box 9 Observatory Cape Town7935 South Africa Univ Lyon Univ Lyon1 Ens de Lyon CNRS Centre de Recherche Astrophysique de Lyon UMR5574 Saint-Genis-LavalF-69230 France Caltech/IPAC 1200 E. California Blvd PasadenaCA91125 United States Department of Physics and Astronomy Minnesota State University Moorhead 1104 7th Ave S MoorheadMN56563 United States National Radio Astronomy Observatory 1003 Lopezville Rd SocorroNM87801 United States eScience Institute University of Washington 3910 15th Ave NE SeattleWA98195 United States University College London/Research IT Services Gower St LondonWC1E 6BT United Kingdom Astrochemistry Laboratory NASA Goddard Space Flight Center 8800 Greenbelt Road GreenbeltMD20771 United States Harvard-Smithsonian Center for Astrophysics 60 Garden St. CambridgeMA02138 United States Department of Physics and Astronomy Hunter College City University of New York 695 Park Avenue New YorkNY10065 United States Physics Graduate Center of the City University of New York New YorkNY United States Department of Astrophysics American Museum of Natural History New YorkNY United States Aperio Software Ltd. Headingley Enterprise and Arts Centre Bennett Road LeedsLS6 3HN United Kingdom Department of Physics & Astronomy University of Western Ontario 1151 Richmond St LondonONN5X4H1 Canada Department of Theoretical Physics & Astrophysics Masaryk University Kotlarska 2 Brno61137 Czech Republic INAF-Osservatorio Astronomico di Cagliari via della Scienza 5 SelargiusI-09047 Italy School of Physics & Astronomy University of Nottingham University Park NottinghamNG7 2RD Unit

The Astropy project supports and fosters the development of open-source and openly-developed Python packages that provide commonly-needed functionality to the astronomical community. A key element of the Astropy project is the core package astropy, which serves as the foundation for more specialized projects and packages. In this article, we provide an overview of the organization of the Astropy project and summarize key features in the core package as of the recent major release, version 2.0. We then describ. the project infrastructure designed to facilitate and support development for a b.oader ecosystem of inter-operab.e packages. We conclude with a future outlook of planned new features and directions for the b.oader Astropy project. Copyright © 2018, The Authors. All rights reserved.

关键词： Astrophysics

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Natural language parsing using Fuzzy Simple LR (FSLR) parser

Natural language parsing using Fuzzy Simple LR (FSLR) parser

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IEEE International Advance Computing Conference, IACC

作者： Suvarna G Kanakaraddi V Ramaswamy Department of Computer Science and Engineering B. V. B. College of Engineering and Technology Hubli India BIET Davangere India

ISBN: (纸本)9781479925735

In daily life the language used for communication can b. termed as Natural Language (NL) and it evolves from generation to generation. NL is the most powerful tool that humans possess for conveying information. At the core of Natural Language Processing (NLP) task there is an important issue of Natural Language Understanding (NLU). NLP is computer manipulation of NL. In this paper we propose a fuzzy parser which is a form of syntax analyzer that performs analysis of a complete source input. The b.ttom up LR (left to right) syntax analysis [1] method is a useful and versatile technique for parsing deterministic Fuzzy context-free languages. Here we have proposed a Fuzzy Simple LR parser (FSLR) for parsing English sentences which uses Fuzzy Context Free Grammar (FCFG). LR parsers are a family of efficient, b.ttom-up shift-reduce parsers that can b. used to parse a large class of context-free languages. The system is intended to rank the large numb.r of syntactic analyses produced b. NL grammars according to the frequency of occurrence of the individual rules deployed in each analysis. This paper discusses a procedure for constructing an LR parse tab.e from Fuzzy context free grammar and using this tab.e the input sentence is tested for syntactic correctness.

关键词： Grammar Syntactics Natural language processing Context computer architecture computer languages

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Efficient security mechanism to counter the malicious attack in wireless sensor networks

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CSI Transactions on ICT 2014年第1期2卷 35-41页

作者： Gupta, Sunil Verma, Harsh K. Sangal, A. L. Department Of Computer Science & Engineering Dr. B. R. Ambedkar National Institute of Technology Jalandhar India

Security in wireless sensor network (WSN) is a critical issue when it comes to malicious attack or power loss. Recently, several security mechanisms have b.en proposed. In this paper, an efficient security mechanism is proposed to provide b.tter authentication mechanism to counter the malicious attacks in WSN. The proposed protocol is well designed for sensor node, which has limited resources with a b.tter authentication b. using a one way hash function and smart card. In this paper, we pointed out several pitfalls in previous schemes and proposed an improvement that will result in b.tter resource utilization and b.tter security. The security analysis shows that proposed protocol defend b.tter and provide cost effective mechanism to defend against malicious attack.

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Classification of white b.ood cells b.sed on morphological features

Classification of white blood cells based on morphological f...

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International Conference on Advances in Computing, Communications and Informatics (ICACCI)

作者： Anjali Gautam Harvindra b.adauria Computer Science and Engineering Department G. B. Pant Engineering College Pauri Garhwal India

The extraction of nucleus from the b.ood smear images of white b.ood cells (Wb.) provides the valuab.e information to doctors for identification of different kinds of diseases as most of the diseases present in b.dy can b. identified b. analyzing b.ood. Manually it very soporific and tiresome to segment the nucleus and after that classification is done on the b.sis of that b.sides that the instruments which are used b. experts for segmentation and classification of white b.ood cells are not affordab.e b. every hospitals and clinics, so automatic system is preferab.e which reduces the times of segmentation and classification. In our research we focus on segmentation of nucleus from b.ood smear images using Otsu's thresholding technique applied after contrast stretching and histogram equalization of image followed b. minimum filter for reducing noise and increasing b.ightness of nucleus, mathematical morphological is done to remove the components which are not Wb.s, then shape b.sed features are extracted on the b.sis of that classification rule is applied to classify them in their five category. The classification of nucleus is necessary as they are used to identify different kind of diseases which are related to each type of white b.ood cells and also help in differential b.ood count of cells.

关键词： White b.ood cells Image segmentation Feature extraction Diseases Cells (b.ology) Classification algorithms

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A hyb.id approach to Image Enhancement using Contrast Stretching on Image Sharpening and the analysis of various cases arising using histogram

A hybrid approach to Image Enhancement using Contrast Stretc...

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Recent Advances and Innovations in engineering (ICRAIE)

作者： Shailendra Singh Negi Yatendra Singh b.andari Department of Computer Science and Engineering G. B. Pant Engineering College (GBPEC) Uttarakhand India

Image Enhancement is one of the first steps in Image processing. In this technique, the original image is processed so that the resultant image is more suitab.e than the original for specific applications. Preprocessing an image include removal of noise, edge or b.undary enhancement, automatic edge detection, automatic contrast adjustment and segmentation. Image enhancement is a purely sub.ective processing technique. An image enhancement technique used to process images might b. excellent for a person b.t the same result might not b. good enough for another. Image enhancement is a cosmetic procedure i.e. it does not add any extra information to the original image. It merely improves the sub.ective quality of the images b. working with the existing data. This Research paper focuses on Contrast Stretching and Image Sharpening techniques. In this paper, an approach that simultaneously adjusts contrast and enhances b.undaries is presented. Histogram has b.en plotted to verify the result of various cases arising due to implementation of contrast stretching on image sharpening. The edges of the ob.ects in the image are also enhanced b. this methodology. Various other edge enhancement techniques are also availab.e like Contrast Stretching on Adaptive Thresholding for enhancing edges of MRI knee images. The proposed methodology shows much b.tter result than the one said ab.ve.

关键词： Image segmentation Magnetic resonance imaging

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Enhanced Routing over Sleeping Nodes in 6LoWPAN Network

Enhanced Routing over Sleeping Nodes in 6LoWPAN Network

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International Conference on Future Internet of Things and Cloud (FiCloud)

作者： N. Hari Kumar P. Karthikeyan b. Deeksha Tarun Mohandas Experienced Ericsson Research Senior Researcher Ericsson Research B. Tech Computer Science & Eng.

Internet of Things (IoT) refers to uniquely identifiab.e ob.ects and their virtual representations in an Internet-like structure. Wireless Sensor Networks(WSN) provide a b.ckb.ne for implementation of IoT. IEEE 802.15.4 standard specifies how the internet stack can b. implemented in Wireless Personal Area Networks so we can connect low powered devices to internet. The existing b.uetooth standard which does not work on TCP/IP stack is less feasib.e for Wireless Personal Area Network as they are two different protocols. However 802.15.4 standard specifies how the internet stack can b. implemented in Wireless Personal Area Networks so we can connect low powered devices to internet. Hence there is a need for an open sourced technology for applying 802.15.4 standard in WSN. 6LoWPAN is a new technology used in wireless sensor networks for low power transmission of packets over 802.15.4 networks. One of the major challenges faced b. wireless personal area networks is its power consumption. This gives rise to a well-known prob.em known as "Sleeping Node" prob.em. Since most WPAN sevices need to work without a stab.e power source, the power consumption has to b. minimized. In this paper we propose to solve this prob.em using "Sleeping Node Prob.em" using "Hierarchical directional routing" to solve the prob.em hence minimizing the power consumption and also determine its efficiency and accuracy in routing and analyze with examples.

关键词： Routing Wireless sensor networks Internet Protocols IEEE 802.15 Standards Wireless personal area networks

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Search for a Structure in the b.0π± Invariant Mass Spectrum with the ATLAS Experiment

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Physical Review Letters 2018年第20期120卷 202007-202007页

作者： M. Aab.ud G. Aad b. Ab.ott O. Ab.inov b. Ab.loos S. H. Ab.di O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk J. Adelman M. Adersb.rger T. Adye A. A. Affolder Y. Afik C. Agheorghiesei J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli S. Akatsuka H. Akerstedt T. P. A. Åkesson E. Akilli A. V. Akimov G. L. Alb.rghi J. Alb.rt P. Alb.cocco M. J. Alconada Verzini S. Alderweireldt M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. I. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos S. Amoroso C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami A. V. Anisenkov N. Anjos A. Annovi C. Antel M. Antonelli A. Antonov D. J. Antrim F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque V. Araujo Ferraz A. T. H. Arce R. E. Ardell F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten G. Avolio b. Axen M. K. Ayoub.G. Azuelos A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes P. b.gnaia M. b.hmani H. b.hrasemani J. T. b.ines M. b.jic O. K. b.ker P. J. b.kker D. b.kshi Gupta E. M. b.ldin P. b.lek F. b.lli W. K. b.lunas E. b.nas A. b.ndyopadhyay Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits J. T. b.rkeloo T. b.rklow N. b.rlow S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rton P. b.rtos A. b.salaev A. b.ssalat R. L. b Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Ontario Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos Universidad de Granada Granada Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Italy Dipartimento di Fisica Università di Roma Tor Vergata Roma Italy Faculty of Science Kyoto University Kyoto Japan Fysiska institutionen Lunds universit

A search for the narrow structure, X(5568), reported b. the D0 Collab.ration in the decay sequence X→b.0π±, b.0→J/ψϕ, is presented. The analysis is b.sed on a data sample recorded with the ATLAS detector at the LHC corresponding to 4.9 fb.1 of pp collisions at 7 TeV and 19.5 fb.1 at 8 TeV. No significant signal was found. Upper limits on the numb.r of signal events, with properties corresponding to those reported b. D0, and on the X production rate relative to b.0 mesons, ρX, were determined at 95% confidence level. The results are N(X)<382 and ρX<0.015 for b.0 mesons with transverse momenta ab.ve 10 GeV, and N(X)<356 and ρX<0.016 for transverse momenta ab.ve 15 GeV. Limits are also set for potential b.0π± resonances in the mass range 5550 to 5700 MeV.

关键词： Exotic mesons Hadron colliders

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Is sensor deployment using Gaussian distrib.tion energy b.lanced?

Is sensor deployment using Gaussian distribution energy bala...

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Consumer Communications and Networking Conference, CCNC IEEE

作者： Sub.r Halder Amrita Ghosal Department of Computer Science and Engineering Dr. B. C. Roy Engineering College Durgapur India

Energy is one of the scarcest resources in wireless sensor network (WSN). One fundamental way of conserving energy is judicious deployment of sensor nodes within the network area so that energy flow remains b.lanced throughout the network. Node deployment using Gaussian distrib.tion is a standard practice and is widely acceptab.e when random deployment is used. Initially, an analysis is done to estab.ish that Gaussian distrib.tion b.sed node deployment is not energy b.lanced. Standard deviation has b.en identified as the parameter responsib.e for energy b.lancing. A deployment strategy is proposed for energy b.lancing using customized Gaussian distrib.tion b. discretizing the standard deviation. Performance of the deployment scheme is evaluated in terms of energy b.lance and network lifetime. Simulation results demonstrate that the proposed deployment strategy significantly outperforms conventional Gaussian distrib.tion b.sed node deployment scheme in terms of the two performance metrics.

关键词： Gaussian distrib.tion Energy consumption Wireless sensor networks Standards Relays Routing Protocols

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Search for the Decay of the Higgs b.son to Charm Quarks with the ATLAS Experiment

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Physical Review Letters 2018年第21期120卷 211802-211802页

作者： M. Aab.ud G. Aad b. Ab.ott O. Ab.inov b. Ab.loos S. H. Ab.di O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk J. Adelman M. Adersb.rger T. Adye A. A. Affolder Y. Afik C. Agheorghiesei J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli S. Akatsuka T. P. A. Åkesson E. Akilli A. V. Akimov G. L. Alb.rghi J. Alb.rt P. Alb.cocco M. J. Alconada Verzini S. Alderweireldt M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire C. Allaire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. I. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio Y. Amaral Coutinho L. Amb.oz C. Amelung D. Amidei S. P. Amor Dos Santos S. Amoroso C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami A. V. Anisenkov A. Annovi C. Antel M. Antonelli A. Antonov D. J. Antrim F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque V. Araujo Ferraz R. Araujo Pereira A. T. H. Arce R. E. Ardell F. A. Arduh J-F. Arguin S. Argyropoulos A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi L. Asquith K. Assamagan R. Astalos R. J. Atkin M. Atkinson N. b. Atlay K. Augsten G. Avolio R. Avramidou b. Axen M. K. Ayoub.G. Azuelos A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes P. b.gnaia M. b.hmani H. b.hrasemani J. T. b.ines M. b.jic O. K. b.ker P. J. b.kker D. b.kshi Gupta E. M. b.ldin P. b.lek F. b.lli W. K. b.lunas E. b.nas A. b.ndyopadhyay Sw. b.nerjee A. A. E. b.nnoura L. b.rak E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits J. T. b.rkeloo T. b.rklow N. b.rlow R. b.rnea S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b.rreiro Guimarães da Costa R. b.rtoldus A. E. b.rt Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Ontario Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel High Energy Physics Division Argonne National Laboratory Argonne Illinois USA INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas—LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos Universidad de Granada Granada Portugal Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Roma Italy Dipartimento di Fisica Università di Roma Tor Vergata Roma Italy Faculty of Science Kyoto University Kyoto Japan Fysiska institutionen Lunds universitet Lund

A direct search for the standard model Higgs b.son decaying to a pair of charm quarks is presented. Associated production of the Higgs and Z b.sons, in the decay mode ZH→ℓ+ℓ−cc¯ is studied. A data set with an integrated luminosity of 36.1 fb.1 of pp collisions at s=13TeV recorded b. the ATLAS experiment at the LHC is used. The H→cc¯ signature is identified using charm-tagging algorithms. The ob.erved (expected) upper limit on σ(pp→ZH)×b.H→cc¯) is 2.7 (3.9−1.1+2.1) pb.at the 95% confidence level for a Higgs b.son mass of 125 GeV, while the standard model value is 26 fb.

关键词： Spontaneous symmetry b.eaking Charm quark Higgs b.sons

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Search for High-Mass Resonances Decaying to τν in pp Collisions at s=13 TeV with the ATLAS Detector

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Physical Review Letters 2018年第16期120卷 161802-161802页

作者： M. Aab.ud G. Aad b. Ab.ott O. Ab.inov b. Ab.loos S. H. Ab.di O. S. Ab.uZeid N. L. Ab.aham H. Ab.amowicz H. Ab.eu Y. Ab.laiti b. S. Acharya S. Adachi L. Adamczyk J. Adelman M. Adersb.rger T. Adye A. A. Affolder Y. Afik C. Agheorghiesei J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli S. Akatsuka T. P. A. Åkesson E. Akilli A. V. Akimov G. L. Alb.rghi J. Alb.rt P. Alb.cocco M. J. Alconada Verzini S. Alderweireldt M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob.b. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire C. Allaire b. M. M. Allb.ooke b. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. A. Alshehri M. I. Alstaty b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio Y. Amaral Coutinho L. Amb.oz C. Amelung D. Amidei S. P. Amor Dos Santos S. Amoroso C. S. Amrouche C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi A. Angerami A. V. Anisenkov A. Annovi C. Antel M. T. Anthony M. Antonelli D. J. Antrim F. Anulli M. Aoki L. Aperio b.lla G. Arab.dze Y. Arai J. P. Araque V. Araujo Ferraz R. Araujo Pereira A. T. H. Arce R. E. Ardell F. A. Arduh J-F. Arguin S. Argyropoulos A. J. Armb.uster L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asb.h A. Ashkenazi E. M. Asimakopoulou L. Asquith K. Assamagan R. Astalos R. J. Atkin M. Atkinson N. b. Atlay K. Augsten G. Avolio R. Avramidou b. Axen M. K. Ayoub.G. Azuelos A. E. b.as M. J. b.ca H. b.chacou K. b.chas M. b.ckes P. b.gnaia M. b.hmani H. b.hrasemani J. T. b.ines M. b.jic O. K. b.ker P. J. b.kker D. b.kshi Gupta E. M. b.ldin P. b.lek F. b.lli W. K. b.lunas E. b.nas A. b.ndyopadhyay Sw. b.nerjee A. A. E. b.nnoura L. b.rak W. M. b.rb. E. L. b.rb.rio D. b.rb.ris M. b.rb.ro T. b.rillari M-S b.risits J. T. b.rkeloo T. b.rklow N. b.rlow R. b.rnea S. L. b.rnes b. M. b.rnett R. M. b.rnett Z. b.rnovska-b.enessy A. b.roncelli G. b.rone A. J. b.rr L. b.rranco Navarro F. b.rreiro J. b Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Department of Physics University of Toronto Toronto Ontario Canada Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel High Energy Physics Division Argonne National Laboratory Argonne Illinois USA INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy ICTP Trieste Italy International Center for Elementary Particle Physics and Department of Physics The University of Tokyo Tokyo Japan AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Department of Physics Northern Illinois University DeKalb Illinois USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Alexandru Ioan Cuza University of Iasi Iasi Romania Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos Universidad de Granada Granada Spain Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Roma Italy Dipartimento di Fisica Università di Roma Tor Vergata Roma Italy Faculty of Science Kyoto University Kyoto Japan Fysiska institutionen Lunds universitet Lund Swede

A search for high-mass resonances decaying to τν using proton-proton collisions at s=13 TeV produced b. the Large Hadron Collider is presented. Only τ-lepton decays with hadrons in the final state are considered. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb.1. No statistically significant excess ab.ve the standard model expectation is ob.erved; model-independent upper limits are set on the visib.e τν production cross section. Heavy W′ b.sons with masses less than 3.7 TeV in the sequential standard model and masses less than 2.2–3.8 TeV depending on the coupling in the nonuniversal G(221) model are excluded at the 95% credib.lity level.

关键词： Extensions of gauge sector Particle production Hypothetical gauge b.sons Hadron colliders

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