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IEEE India Conference (INDICON)

作者： baisakhi Das Nirmalya Sundar Maiti Sukanta Das biplab K Sikdar Information Technology Gurunanak Institute of Technology Kolkata India Cellular Automata Research Lab(CARL) W.B. India Information Technology Bengal Engineering and Sc University WB India Computer Science & Tech Bengal Engineering and Sc University WB India

This work proposes efficient data (cache block) migration in Chip Multiprocessors (CMPs) realizing nonuniform cache architecture (NUCA). The scheme is developed around the modeling tool of cellular automata (CA) invented by von Neumann in 1950's. A special class of periodic boundary CA (PbCA) has been introduced to analyze the distribution of processor cores competing for a data block. It performs density classification of the instances of requests generated by different cores and then decides on the migration of requested block among the L2 cache banks. The PbCA correctly identifies the region populated with processors competing for the data block and points to the direction of data migration. It effectively realizes the quick decision on data migration as well as ensures the most accurate decision.

关键词： Discrete cosine transforms Tiles Automata Arrays Vectors System-on-chip

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Addendum to ‘Measurement of the t t ¯ production cross-section using e μ events with b-tagged jets in pp collisions at s = 7 and 8 TeV with the ATLAS detector’

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The European Physical Journal C 2016年第11期76卷 1-14页

作者： Aad, G. Abbott, b. Abdallah, J. Abdel Khalek, S. Abdinov, O. Aben, R. Abi, b. Abolins, M. AbouZeid, O. S. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, b. S. Adamczyk, L. Adams, D. L. Adelman, J. Adomeit, S. Adye, T. Agatonovic-Jovin, T. Aguilar-Saavedra, J. A. Agustoni, M. Ahlen, S. P. Ahmadov, F. Aielli, G. Akerstedt, H. Åkesson, T. P. A. Akimoto, G. Akimov, A. V. Alberghi, G. L. Albert, J. Albrand, S. Alconada Verzini, M. J. Aleksa, M. Aleksandrov, I. N. Alexa, C. Alexander, G. Alexandre, G. Alexopoulos, T. Alhroob, M. Alimonti, G. Alio, L. Alison, J. Allbrooke, b. M. M. Allison, L. J. Allport, P. P. Almond, J. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Altheimer, A. Alvarez Gonzalez, b. Alviggi, M. G. Amako, K. Amaral Coutinho, Y. Amelung, C. Amidei, D. Santos, S. P. Amor Dos Amorim, A. Amoroso, S. Amram, N. Amundsen, G. Anastopoulos, C. Ancu, L. S. Andari, N. Andeen, T. Anders, C. F. Anders, G. Anderson, K. J. Andreazza, A. Andrei, V. Anduaga, X. S. Angelidakis, S. Angelozzi, I. Anger, P. Angerami, A. Anghinolfi, F. Anisenkov, A. V. Anjos, N. Annovi, A. Antonaki, A. Antonelli, M. Antonov, A. Antos, J. Anulli, F. Aoki, M. Aperio bella, L. Apolle, R. Arabidze, G. Aracena, I. Arai, Y. Araque, J. P. Arce, A. T. H. Arguin, J-F. Argyropoulos, S. Arik, M. Armbruster, A. J. Arnaez, O. Arnal, V. Arnold, H. Arratia, M. Arslan, O. Artamonov, A. Artoni, G. Asai, S. Asbah, N. Ashkenazi, A. Åsman, b. Asquith, L. Assamagan, K. Astalos, R. Atkinson, M. Atlay, N. b. Auerbach, b. Augsten, K. Aurousseau, M. Avolio, G. Azuelos, G. Azuma, Y. baak, M. A. baas, A. bacci, C. bachacou, H. bachas, K. backes, M. backhaus, M. backus Mayes, J. badescu, E. bagiacchi, P. bagnaia, P. bai, Y. bain, T. baines, J. T. baker, O. K. balek, P. balli, F. banas, E. banerjee, Sw. bannoura, A. A. E. bansal, V. bansil, H. S. barak, L. baranov, S. P. barberio, E. L. barberis, D. barbero, M. barillari, T. barisonzi, M. barklow, T. barlow, N. barnett, b. M. barnett, R. M. barnovska, Z. baroncelli, A. barone, G. barr, A. J. barreiro, F. da CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman USA Institute of Physics Academia Sinica Taipei Taiwan LAL Université Paris-Sud and CNRS/IN2P3 Orsay France Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam The Netherlands Department of Physics Oklahoma State University Stillwater USA Department of Physics and Astronomy Michigan State University East Lansing USA Department of Physics University of Toronto Toronto Canada 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 CERN Geneva Switzerland Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden Particle Physics Department Rutherford Appleton Laboratory Didcot UK AGH University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Physics Department Brookhaven National Laboratory Upton USA Department of Physics Yale University New Haven USA Fakultät für Physik Ludwig-Maximilians-Universität München Munich Germany Institute of Physics University of Belgrade Belgrade Serbia Laboratorio de Instrumentacao e Fisica Experimental de Particulas-LIP Lisbon Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics University of Bern Bern Switzerland Department of Physics Boston University Boston USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Rome Italy Dipartimento di Fisica Università di Roma Tor Vergata Rome Italy Fysiska institutionen Lunds universitet Lund Sweden International Center for Elementary Particle Physics and Depa

The ATLAS measurement of the inclusive top quark pair ( $$t\bar{t}$$ ) cross-section $$\sigma _{t\bar{t}}$$ in proton–proton collisions at $$\sqrt{s}=8$$   $$\,\mathrm{TeV}$$ has been updated using the final 2012 luminosity calibration. The updated cross-section result is: $$\begin{aligned} \sigma _{t\bar{t}}= 242.9\pm 1.7\pm 5.5\pm 5.1\pm 4.2\,\mathrm pb, \end{aligned}$$ where the four uncertainties arise from data statistics, experimental and theoretical systematic effects, knowledge of the integrated luminosity and of the LHC beam energy. The result is consistent with theoretical QCD calculations at next-to-next-to-leading order. The measurement of the ratio of $$t\bar{t}$$ cross-sections at $$\sqrt{s}=8$$   $$\,\mathrm{TeV}$$ and $$\sqrt{s}=7$$   $$\,\mathrm{TeV}$$ , and the $$\sqrt{s}=8$$   $$\,\mathrm{TeV}$$ fiducial measurement corresponding to the experimental acceptance of the leptons, have also been updated.

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Erratum to: ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider ATLAS Collaboration

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The European Physical Journal C 2016年第3期76卷 1-14页

作者： Aad, G. Abbott, b. Abdallah, J. Abdinov, O. Aben, R. Abolins, M. AbouZeid, O. S. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, b. S. Adamczyk, L. Adams, D. L. Adelman, J. Adomeit, S. Adye, T. Affolder, A. A. Agatonovic-Jovin, T. Agricola, J. Aguilar-Saavedra, J. A. Ahlen, S. P. Ahmadov, F. Aielli, G. Akerstedt, H. Åkesson, T. P. A. Akimov, A. V. Alberghi, G. L. Albert, J. Albrand, S. Alconada Verzini, M. J. Aleksa, M. Aleksandrov, I. N. Alexa, C. Alexander, G. Alexopoulos, T. Alhroob, M. Alimonti, G. Alio, L. Alison, J. Alkire, S. P. Allbrooke, b. M. M. Allport, P. P. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Altheimer, A. Alvarez Gonzalez, b. Álvarez Piqueras, D. Alviggi, M. G. Amadio, b. T. Amako, K. Amaral Coutinho, Y. Amelung, C. Amidei, D. Amor Dos Santos, S. P. Amorim, A. Amoroso, S. Amram, N. Amundsen, G. Anastopoulos, C. Ancu, L. S. Andari, N. Andeen, T. Anders, C. F. Anders, G. Anders, J. K. Anderson, K. J. Andreazza, A. Andrei, V. Angelidakis, S. Angelozzi, I. Anger, P. Angerami, A. Anghinolfi, F. Anisenkov, A. V. Anjos, N. Annovi, A. Antonelli, M. Antonov, A. Antos, J. Anulli, F. Aoki, M. Aperio bella, L. Arabidze, G. Arai, Y. Araque, J. P. Arce, A. T. H. Arduh, F. A. Arguin, J.-F. Argyropoulos, S. Arik, M. Armbruster, A. J. Arnaez, O. Arnal, V. Arnold, H. Arratia, M. Arslan, O. Artamonov, A. Artoni, G. Asai, S. Asbah, N. Ashkenazi, A. Åsman, b. Asquith, L. Assamagan, K. Astalos, R. Atkinson, M. Atlay, N. b. Auerbach, b. Augsten, K. Aurousseau, M. Avolio, G. Axen, b. Ayoub, M. K. Azuelos, G. baak, M. A. baas, A. E. baca, M. J. bacci, C. bachacou, H. bachas, K. backes, M. backhaus, M. bagiacchi, P. bagnaia, P. bai, Y. bain, T. baines, J. T. baker, O. K. baldin, E. M. balek, P. balestri, T. balli, F. banas, E. banerjee, Sw. bannoura, A. A. E. bansil, H. S. barak, L. barberio, E. L. barberis, D. barbero, M. barillari, T. barisonzi, M. barklow, T. barlow, N. barnes, S. L. barnett, b. M. barnett, R. M. barnovska, Z. baroncelli, A. barone, G. barr, A. J. barreiro, F. barreiro Guimarães da Co CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman USA Institute of Physics Academia Sinica Taipei Taiwan Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam The Netherlands Department of Physics and Astronomy Michigan State University East Lansing USA Department of Physics University of Toronto Toronto Canada 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 Center for High Energy Physics University of Oregon Eugene USA Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Udine Italy ICTP Trieste Italy AGH University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Physics Department Brookhaven National Laboratory Upton USA Department of Physics Northern Illinois University De Kalb USA Fakultät für Physik Ludwig-Maximilians-Universität München Munich Germany Particle Physics Department Rutherford Appleton Laboratory Didcot UK Oliver Lodge Laboratory University of Liverpool Liverpool UK Institute of Physics University of Belgrade Belgrade Serbia II Physikalisches Institut Georg-August-Universität Göttingen Germany Laboratório de Instrumentação e Física Experimental de Partículas-LIP Lisbon Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Department of Physics Boston University Boston USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Rome Italy Dipartimento di Fisica Università di Roma Tor Vergata Rome Italy Fysiska institutionen Lunds universitet Lund Sweden P.N. Lebedev Institute of Physics Academy of Sciences

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Erratum to: Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector

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The European Physical Journal C 2016年第3期76卷 1-14页

作者： Aad, G. Abbott, b. Abdallah, J. Abdinov, O. Aben, R. Abolins, M. AbouZeid, O. S. Abramowicz, H. Abreu, H. Abreu, R. Abulaiti, Y. Acharya, b. S. Adamczyk, L. Adams, D. L. Adelman, J. Adomeit, S. Adye, T. Affolder, A. A. Agatonovic-Jovin, T. Agricola, J. Aguilar-Saavedra, J. A. Ahlen, S. P. Ahmadov, F. Aielli, G. Akerstedt, H. Åkesson, T. P. A. Akimov, A. V. Alberghi, G. L. Albert, J. Albrand, S. Alconada Verzini, M. J. Aleksa, M. Aleksandrov, I. N. Alexa, C. Alexander, G. Alexopoulos, T. Alhroob, M. Alimonti, G. Alio, L. Alison, J. Alkire, S. P. Allbrooke, b. M. M. Allport, P. P. Aloisio, A. Alonso, A. Alonso, F. Alpigiani, C. Altheimer, A. Alvarez Gonzalez, b. Álvarez Piqueras, D. Alviggi, M. G. Amadio, b. T. Amako, K. Amaral Coutinho, Y. Amelung, C. Amidei, D. Amor Dos Santos, S. P. Amorim, A. Amoroso, S. Amram, N. Amundsen, G. Anastopoulos, C. Ancu, L. S. Andari, N. Andeen, T. Anders, C. F. Anders, G. Anders, J. K. Anderson, K. J. Andreazza, A. Andrei, V. Angelidakis, S. Angelozzi, I. Anger, P. Angerami, A. Anghinolfi, F. Anisenkov, A. V. Anjos, N. Annovi, A. Antonelli, M. Antonov, A. Antos, J. Anulli, F. Aoki, M. Aperio bella, L. Arabidze, G. Arai, Y. Araque, J. P. Arce, A. T. H. Arduh, F. A. Arguin, J.-F. Argyropoulos, S. Arik, M. Armbruster, A. J. Arnaez, O. Arnal, V. Arnold, H. Arratia, M. Arslan, O. Artamonov, A. Artoni, G. Asai, S. Asbah, N. Ashkenazi, A. Åsman, b. Asquith, L. Assamagan, K. Astalos, R. Atkinson, M. Atlay, N. b. Auerbach, b. Augsten, K. Aurousseau, M. Avolio, G. Axen, b. Ayoub, M. K. Azuelos, G. baak, M. A. baas, A. E. bacci, C. bachacou, H. bachas, K. backes, M. backhaus, M. bagiacchi, P. bagnaia, P. bai, Y. bain, T. baines, J. T. baker, O. K. baldin, E. M. balek, P. balestri, T. balli, F. banas, E. banerjee, Sw. bannoura, A. A. E. bansil, H. S. barak, L. barberio, E. L. barberis, D. barbero, M. barillari, T. barisonzi, M. barklow, T. barlow, N. barnes, S. L. barnett, b. M. barnett, R. M. barnovska, Z. baroncelli, A. barone, G. barr, A. J. barreiro, F. barreiro Guimarães da Costa, J. bart CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman USA Institute of Physics Academia Sinica Taipei Taiwan Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam The Netherlands Department of Physics and Astronomy Michigan State University East Lansing USA Department of Physics University of Toronto Toronto Canada 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 Center for High Energy Physics University of Oregon Eugene USA Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Udine Italy ICTP Trieste Italy AGH University of Science and Technology Faculty of Physics and Applied Computer Science Kraków Poland Physics Department Brookhaven National Laboratory Upton USA Department of Physics Northern Illinois University De Kalb USA Fakultät für Physik Ludwig-Maximilians-Universität München Munich Germany Particle Physics Department Rutherford Appleton Laboratory Didcot UK Oliver Lodge Laboratory University of Liverpool Liverpool UK Institute of Physics University of Belgrade Belgrade Serbia II Physikalisches Institut Georg-August-Universität Göttingen Germany Laboratório de Instrumentação e Física Experimental de Partículas-LIP Lisbon Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Department of Physics Boston University Boston USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Rome Italy Dipartimento di Fisica Università di Roma Tor Vergata Rome Italy Fysiska institutionen Lunds universitet Lund Sweden P.N. Lebedev Institute of Physics Academy of Sciences

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Search for magnetic monopoles and stable particles with high electric charges in 8 TeV pp collisions with the ATLAS detector

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Physical Review D 2016年第5期93卷 052009-052009页

作者： G. Aad b. Abbott J. Abdallah O. Abdinov R. Aben M. Abolins O. S. AbouZeid H. Abramowicz H. Abreu R. Abreu Y. Abulaiti b. S. Acharya L. Adamczyk D. L. Adams J. Adelman S. Adomeit T. Adye A. A. Affolder T. Agatonovic-Jovin J. Agricola J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli H. Akerstedt T. P. A. Åkesson A. V. Akimov G. L. Alberghi J. Albert S. Albrand M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob G. Alimonti L. Alio J. Alison S. P. Alkire b. M. M. Allbrooke P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. Altheimer b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio K. Amako Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso N. Amram G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi P. Anger A. Angerami F. Anghinolfi A. V. Anisenkov N. Anjos A. Annovi M. Antonelli A. Antonov J. Antos F. Anulli M. Aoki L. Aperio bella G. Arabidze Y. Arai J. P. Araque A. T. H. Arce F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armbruster O. Arnaez V. Arnal H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Asai N. Asbah A. Ashkenazi b. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten M. Aurousseau G. Avolio b. Axen M. K. Ayoub G. Azuelos M. A. baak A. E. baas M. J. baca C. bacci H. bachacou K. bachas M. backes M. backhaus P. bagiacchi P. bagnaia Y. bai T. bain J. T. baines O. K. baker E. M. baldin P. balek T. balestri F. balli W. K. balunas E. banas Sw. banerjee A. A. E. bannoura H. S. bansil L. barak E. L. barberio D. barberis M. barbero T. barillari M. barisonzi T. barklow N. barlow S. L. barnes b. M. barnett R. M. barnett Z. barnovska A. baroncelli G. barone A. J. barr F. barreiro J. barreiro Guimarães da Costa R. bartoldus A. E. barton P. bartos A. basalaev A. bassalat A. basye R. L. bates S. J. batista J. R. batley M. battaglia M. bauce F. bauer H. S. ba 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 Academia Sinica Taipei Taiwan Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto ON Canada 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 Center for High Energy Physics University of Oregon Eugene Oregon USA 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 AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Physics Department Brookhaven National Laboratory Upton New York USA 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 Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Institute of Physics University of Belgrade Belgrade Serbia II Physikalisches Institut Georg-August-Universität Göttingen Germany Laboratório de Instrumentação e Física Experimental de Partículas—LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada (Spain) 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 Fysiska

A search for highly ionizing particles produced in proton-proton collisions at 8 TeV center-of-mass energy is performed by the ATLAS Collaboration at the CERN Large Hadron Collider. The data set used corresponds to an integrated luminosity of 7.0 fb−1. A customized trigger significantly increases the sensitivity, permitting a search for such particles with charges and energies beyond what was previously accessible. No events were found in the signal region, leading to production cross section upper limits in the mass range 200–2500 GeV for magnetic monopoles with magnetic charge in the range 0.5gD<|g|<2.0gD, where gD is the Dirac charge, and for stable particles with electric charge in the range 10<|z|<60. Model-dependent limits are presented in given pair-production scenarios, and model-independent limits are presented in fiducial regions of particle energy and pseudorapidity.

关键词： Particle production Hypothetical particles Magnetic monopoles Hadron colliders

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Measurement of jet charge in dijet events from s=8 TeV pp collisions with the ATLAS detector

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Physical Review D 2016年第5期93卷 052003-052003页

作者： G. Aad b. Abbott J. Abdallah O. Abdinov R. Aben M. Abolins O. S. AbouZeid H. Abramowicz H. Abreu R. Abreu Y. Abulaiti b. S. Acharya L. Adamczyk D. L. Adams J. Adelman S. Adomeit T. Adye A. A. Affolder T. Agatonovic-Jovin J. Agricola J. A. Aguilar-Saavedra S. P. Ahlen F. Ahmadov G. Aielli H. Akerstedt T. P. A. Åkesson A. V. Akimov G. L. Alberghi J. Albert S. Albrand M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander T. Alexopoulos M. Alhroob G. Alimonti L. Alio J. Alison S. P. Alkire b. M. M. Allbrooke P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani A. Altheimer b. Alvarez Gonzalez D. Álvarez Piqueras M. G. Alviggi b. T. Amadio K. Amako Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso N. Amram G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders J. K. Anders K. J. Anderson A. Andreazza V. Andrei S. Angelidakis I. Angelozzi P. Anger A. Angerami F. Anghinolfi A. V. Anisenkov N. Anjos A. Annovi M. Antonelli A. Antonov J. Antos F. Anulli M. Aoki L. Aperio bella G. Arabidze Y. Arai J. P. Araque A. T. H. Arce F. A. Arduh J-F. Arguin S. Argyropoulos M. Arik A. J. Armbruster O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Asai N. Asbah A. Ashkenazi b. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay K. Augsten M. Aurousseau G. Avolio b. Axen M. K. Ayoub G. Azuelos M. A. baak A. E. baas M. J. baca C. bacci H. bachacou K. bachas M. backes M. backhaus P. bagiacchi P. bagnaia Y. bai T. bain J. T. baines O. K. baker E. M. baldin P. balek T. balestri F. balli W. K. balunas E. banas Sw. banerjee A. A. E. bannoura L. barak E. L. barberio D. barberis M. barbero T. barillari M. barisonzi T. barklow N. barlow S. L. barnes b. M. barnett R. M. barnett Z. barnovska A. baroncelli G. barone A. J. barr F. barreiro J. barreiro Guimarães da Costa R. bartoldus A. E. barton P. bartos A. basalaev A. bassalat A. basye R. L. bates S. J. batista J. R. batley M. battaglia M. bauce F. bauer H. S. bawa J. b. beacham M. D. CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman OK United States of America Institute of Physics Academia Sinica Taipei Taiwan Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Department of Physics and Astronomy Michigan State University East Lansing MI United States of America Department of Physics University of Toronto Toronto ON Canada 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 Center for High Energy Physics University of Oregon Eugene OR United States of America 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 AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Physics Department Brookhaven National Laboratory Upton NY United States of America Department of Physics Northern Illinois University DeKalb IL United States of America Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Oliver Lodge Laboratory University of Liverpool Liverpool United Kingdom Institute of Physics University of Belgrade Belgrade Serbia II Physikalisches Institut Georg-August-Universität Göttingen Germany Laboratório de Instrumentação e Física Experimental de Partículas—LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Department of Physics Boston University Boston MA United States of America Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor Vergata Italy Diparti

The momentum-weighted sum of the charges of tracks associated to a jet is sensitive to the charge of the initiating quark or gluon. This paper presents a measurement of the distribution of momentum-weighted sums, called jet charge, in dijet events using 20.3 fb−1 of data recorded with the ATLAS detector at s=8 TeV in pp collisions at the LHC. The jet charge distribution is unfolded to remove distortions from detector effects and the resulting particle-level distribution is compared with several models. The pT dependence of the jet charge distribution average and standard deviation are compared to predictions obtained with several leading-order and next-to-leading-order parton distribution functions. The data are also compared to different Monte Carlo simulations of QCD dijet production using various settings of the free parameters within these models. The chosen value of the strong coupling constant used to calculate gluon radiation is found to have a significant impact on the predicted jet charge. There is evidence for a pT dependence of the jet charge distribution for a given jet flavor. In agreement with perturbative QCD predictions, the data show that the average jet charge of quark-initiated jets decreases in magnitude as the energy of the jet increases.

关键词： Perturbative QCD Quantum chromodynamics Quark & gluon jets

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Centrality, rapidity, and transverse momentum dependence of isolated prompt photon production in lead-lead collisions at sNN=2.76 TeV measured with the ATLAS detector

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Physical Review C 2016年第3期93卷 034914-034914页

作者： G. Aad b. Abbott J. Abdallah S. Abdel Khalek O. Abdinov R. Aben b. Abi M. Abolins O. S. AbouZeid H. Abramowicz H. Abreu R. Abreu Y. Abulaiti b. S. Acharya L. Adamczyk D. L. Adams J. Adelman S. Adomeit T. Adye T. Agatonovic-Jovin J. A. Aguilar-Saavedra M. Agustoni S. P. Ahlen F. Ahmadov G. Aielli H. Akerstedt T. P. A. Åkesson G. Akimoto A. V. Akimov G. L. Alberghi J. Albert S. Albrand M. J. Alconada Verzini M. Aleksa I. N. Aleksandrov C. Alexa G. Alexander G. Alexandre T. Alexopoulos M. Alhroob G. Alimonti L. Alio J. Alison b. M. M. Allbrooke L. J. Allison P. P. Allport J. Almond A. Aloisio A. Alonso F. Alonso C. Alpigiani A. Altheimer b. Alvarez Gonzalez M. G. Alviggi K. Amako Y. Amaral Coutinho C. Amelung D. Amidei S. P. Amor Dos Santos A. Amorim S. Amoroso N. Amram G. Amundsen C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders K. J. Anderson A. Andreazza V. Andrei X. S. Anduaga S. Angelidakis I. Angelozzi P. Anger A. Angerami F. Anghinolfi A. V. Anisenkov N. Anjos A. Annovi A. Antonaki M. Antonelli A. Antonov J. Antos F. Anulli M. Aoki L. Aperio bella R. Apolle G. Arabidze I. Aracena Y. Arai J. P. Araque A. T. H. Arce J-F. Arguin S. Argyropoulos M. Arik A. J. Armbruster O. Arnaez V. Arnal H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Asai N. Asbah A. Ashkenazi b. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. b. Atlay b. Auerbach K. Augsten M. Aurousseau G. Avolio G. Azuelos Y. Azuma M. A. baak A. E. baas C. bacci H. bachacou K. bachas M. backes M. backhaus J. backus Mayes E. badescu P. bagiacchi P. bagnaia Y. bai T. bain J. T. baines O. K. baker P. balek F. balli E. banas Sw. banerjee A. A. E. bannoura V. bansal H. S. bansil L. barak E. L. barberio D. barberis M. barbero T. barillari M. barisonzi T. barklow N. barlow b. M. barnett R. M. barnett Z. barnovska A. baroncelli G. barone A. J. barr F. barreiro J. barreiro Guimarães da Costa R. bartoldus A. E. barton P. bartos V. bartsch A. bassalat A. basye R. L. bates J. R. batley M. battaglia M. battistin F. bauer H. S. bawa M CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman OK United States of America Institute of Physics Academia Sinica Taipei Taiwan LAL Université Paris-Sud and CNRS/IN2P3 Orsay France Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Department of Physics Oklahoma State University Stillwater OK United States of America Department of Physics and Astronomy Michigan State University East Lansing MI United States of America Department of Physics University of Toronto Toronto ON Canada 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 CERN Geneva Switzerland Department of Physics Stockholm University Stockholm Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine ICTP Trieste Italy AGH University of Science and Technology Faculty of Physics and Applied Computer Science Krakow Poland Physics Department Brookhaven National Laboratory Upton NY United States of America Department of Physics Yale University New Haven CT United States of America Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Institute of Physics University of Belgrade Belgrade Serbia Laboratório de Instrumentação e Física Experimental de Partículas - LIP Lisboa Portugal Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada (Spain) Portugal Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics University of Bern Bern Switzerland Department of Physics Boston University Boston MA United States of America Joint Institute for Nuclear Research JINR Dub

Prompt photon production in sNN=2.76-TeV Pb+Pb collisions has been measured by the ATLAS experiment at the Large Hadron Collider using data collected in 2011 with an integrated luminosity of 0.14 nb−1. Inclusive photon yields, scaled by the mean nuclear thickness function, are presented as a function of collision centrality and transverse momentum in two pseudorapidity intervals, |η|<1.37 and 1.52≤|η|<2.37. The scaled yields in the two pseudorapidity intervals, as well as the ratios of the forward yields to those at midrapidity, are compared to the expectations from next-to-leading-order perturbative QCD (pQCD) calculations. The measured cross sections agree well with the predictions for proton-proton collisions within statistical and systematic uncertainties. both the yields and the ratios are also compared to two other pQCD calculations, one which uses the isospin content appropriate to colliding lead nuclei and another which includes nuclear modifications to the nucleon parton distribution functions.

关键词： Hard scattering Photon, lepton & quark production Relativistic heavy-ion collisions

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Covertness analysis of subliminal channels in legitimate communication

Covertness analysis of subliminal channels in legitimate com...

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International Conference on Advanced Computing, Networking and Security, ADCONS 2011

作者： Gururaja, H.S. Seetha, M. Koundinya, Anjan K. Department of Information Science and Engineering B.M.S. College of Engineering Bangalore India Department of Computer Science and Engineering G. Narayanamma Institute of Tech. and Science Hyderabad India Department of Computer Science and Engineering R.V. College of Engineering Bangalore India

ISBN: (纸本)9783642292798

Secure transaction over a network is one of the critical application which employs high-level cryptographic methods to secure information exchange. Secure communication merely relies on the strength of a cryptographic method. However early research in 80's have explored possibilities of various loopholes in a cryptosystem, one of which is the attacks based on subliminal channel. This was first demonstrated by G. Simmons for DSA Algorithm by planting covert or subliminal data in one of the variables in DSA. Subliminal channel user embeds the covert data in traditional cryptosystem and this is termed as backdoor - an unintended design mathematically planted in any cryptographic algorithm. Such attacks on secure network will compromise the most important attribute of network called "privacy". This paper explores all the theoretical boundaries involved with subliminal channels and proposes a new metric called "covertness index" which indicates the strength of the trapdoor or backdoor placed in the communication channels. This index assists in assessing or evolving a detection method to analyze the embodied trapdoor in a communication channel. This paper also proposes certain changes to elliptic curve model for generating randomness which is a vital step in creation of cryptographic keys in public-key cryptosystem. © 2012 Springer-Verlag.

关键词： Network security

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Supervised isomap based on pairwise constraints

Supervised isomap based on pairwise constraints

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19th International Conference on Neural Information Processing, ICONIP 2012

作者： Cheng, Jian Cheng, Can Guo, Yi-Nan School of Information and Electrical Engineering CUMT-IoT Perception Mine Research Center China University of Mining and Technology Xuzhou 221116 China CERCIA School of Computer Science University of Birmingham Edgbaston Birmingham B15 2TT United Kingdom

ISBN: (纸本)9783642344749

Most existing typical dimension reduction methods, for example Isomap algorithm, are hard to deal with the problem of violation of pairwise constraint. In this paper, a pairwise-constraint supervised Isomap algorithm (PC-SIsomap) is proposed, in which the supervised information is taken on the form of pairwise constraint introduced to geodesic distance. Mapping high-dimensional and non-linear data points to low-dimensional embedding space, PC-SIsomap can effectively take advantage of pairwise constraint information to realize dimensionality reduction. At the same time in order to solve the out-of-sample problem in manifold learning, bP neural network is employed to build a nonlinear mapping relation from the high-dimensional original data space to a low-dimensional feature space. Consequentially, support vector machine (SVM) classifiers are designed for realizing pattern classification in the low-dimensional feature space. Some experiments are executed in UCI datasets and dataset of gas safety monitoring system in coal mine, the results show that PC-SIsomap not only reduces the residual value, but also improves the classification accuracy. © 2012 Springer-Verlag.

关键词： Mapping

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A Comparative Study of back Propagation and Simulated Annealing Algorithms for Neural Net Classifier Optimization

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Procedia engineering 2012年 38卷 448-455页

作者： Subhendu Sekhar behera Subhagata Chattopadhyay B.Tech Department of Computer Science & Engineering National Institute of Science & Technology Berhampur-761008 India Professor Department of Computer Science & Engneering National Institute of Science & Technologys Berhampur-761008 India

Optimizing the convergence of a Neural Net Classifier (NNC) is an important task to increase the speed and accuracy in the decision-making process. Learning algorithms are used to facilitate such optimization process. Simulated Annealing (SA) and back propagation (bP) are two popular optimization algorithms. The objective of the study is to compare the optimization performances of SA and bP on a feed-forward NNC that relies more on bP. For the study, five standard datasets, such as WINE, IRIS, DIAbETES, TEACHING ASSISTANT EVALUATION (TAE), and GLASS are considered. Experimental results reveal that during training and testing SA has outperformed bP (except for WINE data and that is during testing only). The generalised notion is that bP is one of the best optimisers for NNC. Hence, the experimental results are interesting. The authors assume that it is due to the fact that SA is a much randomized approach to find the global solution, while bP is a gradient-based search and thus has an inclination to be trapped in the local minima. Another important reason could be that bP relies on its best learning (occurred during its training) while classifying test cases, which might not be appropriate for a new dataset. SA, on the other hand, initiates a new search with the given dataset and because of its randomized search space, is able to converge into the global minima. The paper therefore argues that for optimising in a classical NNC, SA is more efficient than bP because of its random and flexible search space.

关键词： ANN back Propagation Simulated Annealing Classification Comparison

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