检索结果-内蒙古大学图书馆

Effect of vapor bubbles on velocity fluctuations and dissipation rates in bubbly Rayleigh-Bénard convection

Physical Review E 2011年第3期84卷 036312-036312页

作者： Rajaram.Lakkaraju Laura E. Schm.dt Paolo Oresta Federico Toschi Roberto Verzicco Detlef Lohse Andrea Prosperetti Physics of Fluids Group Faculty of Science and Technology Impact and Mesa+ Institutes and J. M. Burgers Center for Fluid Dynamics University of Twente NL-7500 AE Enschede The Netherlands Dipartimento di Ingegneria dell’ Ambiente e per lo Sviluppo Sostenibile Politecnico di Bari Via De Gasperi I-74123 Taranto Italy Dipartimento di Ingegneria dell’Innovazione Universitá del Salento Via per Arnesano I-73100 Lecce Italy Department of Physics Department of Mathematics and Computer Science and J. M. Burgers Center for Fluid Dynamics Eindhoven University of Technology NL-5600 MB Eindhoven The Netherlands Department of Mechanical Engineering University of Rome “Tor Vergata” Via del Politecnico 1 I-00133 Rome Italy Department of Mechanical Engineering Johns Hopkins University Baltimore Maryland 21218 USA

Num.rical results for kinetic and therm.l energy dissipation rates in bubbly Rayleigh-Bénard convection are reported. Bubbles have a twofold effect on the flow: on the one hand, they absorb or release heat to the surrounding liquid phase, thus tending to decrease the tem.erature differences responsible for the convective m.tion; but on the other hand, the absorbed heat causes the bubbles to grow, thus increasing their buoyancy and enhancing turbulence (or, m.re properly, pseudoturbulence) by generating velocity fluctuations. This enhancem.nt depends on the ratio of the sensible heat to the latent heat of the phase change, given by the Jakob num.er, which determ.nes the dynam.cs of the bubble growth.

关键词： Energy dissipation

来源：评论

学校读者我要写书评

暂无评论

technical innovation to overcom. regulation - Use case: Term.nating fees in m.bile com.unication

Technical innovation to overcome regulation - Use case: Term...

引用

5th IEEE International Conference on m.nagem.nt of Innovation and technology, ICm.T2010

作者： Kastell, K. Faculty of Computer Science and Engineering Frankfurt University of Applied Sciences Frankfurt A. M. Germany

ISBN: (纸本)9781424465675

Regulation is an issue controversial discussed am.ng econom.sts them.elves and the com.anies affected by regulatory policies. But regulation and technical innovation, even if it is tem.orarily causing a dom.nant m.rket position, do not have to be oppositional things. This paper aim. to show incentives how com.anies could be pushed to im.lem.nt technical innovation as a m.ans to overcom. regulatory restrictions. This is shown using the exam.le of regulated term.nating fees in m.bile com.unication and how inter-provider Handover can lead to contestable m.rkets. © 2010 IEEE.

关键词： Com.erce

来源：评论

学校读者我要写书评

暂无评论

m.asurem.nts of four-lepton production at the Z resonance in pp collisions at sqrt[s] = 7 and 8 TeV with ATLAS

引用

Physical Review Letters [Phys Rev Lett] 2014年第23期112卷 231806-231806页

作者： Aad Abbott Abdallah Abdel Khalek Abdinov Aben Abi Abolins AbouZeid O Abram.wicz Abreu Abulaiti Acharya B Adam.zyk Adam. D Adelm.n Adom.it Adye Agatonovic-Jovin Aguilar-Saavedra J Agustoni Ahlen S Ahm.d Ahm.dov Aielli Akerstedt Åkesson T Akim.to Akim.v A Alberghi G Albert Albrand Alconada Verzini m.Aleksa Aleksandrov I Alexa Alexander Alexandre Alexopoulos Alhroob Alim.nti Alio Alison Allbrooke B Allison L Allport P Allwood-Spiers S Alm.nd Aloisio Alonso Alpigiani Altheim.r Alvarez Gonzalez Alviggi m.Am.ko Am.ral Coutinho Am.lung Am.dei Am.r Dos Santos S Am.rim.Am.roso Am.am.Am.ndsen Anastopoulos Ancu L Andari Andeen Anders C Anders Anderson K Andreazza Andrei Anduaga X Angelidakis Angelozzi Anger Angeram. Anghinolfi Anisenkov A Anjos Annovi Antonaki Antonelli Antonov Antos Anulli Aoki Aperio Bella Apolle Arabidze Aracena Arai Araque J Arce A Arguin J Argyropoulos Arik Arm.ruster A Arnaez Arnal Arnold Arslan Artam.nov Artoni Asai Asbah Ashkenazi Asm.n Asquith Assam.gan Astalos Atkinson Atlay N Auerbach Augsten Aurousseau Avolio Azuelos Azum. Baak m.Bacci Bachacou Bachas Backes Backhaus Backus m.yes Badescu Bagiacchi Bagnaia Bai Bain Baines J Baker O Baker Balek Balli Banas Banerjee Banfi Bangert Bannoura A Bansal Bansil H Barak Baranov S Barberio E Barberis Barbero Barillari Barisonzi Barklow Barlow Barnett B Barnett R Barnovska Baroncelli Barone Barr A Barreiro Barreiro Guim.rães da Costa Bartoldus Barton A Bartos Bartsch Bassalat Basye Bates R Batkova Batley J Battistin Bauer Bawa H Beau Beauchem.n P Beccherle Bechtle Beck H Becker Beckingham.Becot Beddall A Beddall Bedikian Bednyakov V Bee C Beem.ter L Beerm.nn T Begel Behr Belanger-Cham.agne Bell P Bell W Bella Bellagam.a Bellerive Bellom. Belloni Beloborodova O Belotskiy Beltram.llo Benary Benchekroun Bendtz Benekos Benham.ou Benhar Noccioli Benitez Garcia J Benjam.n D Bensinger J Benslam. Bentvelsen Berge Bergeaas Kuutm.nn Berger Berghaus Berglund Beringer Bernard Bernat Bernius Bernlochner F Berry Berta Bertella Bertolucci Bertsche Besana m.Besjes G Bessids 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 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 Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel CERN Geneva Switzerland Department of Physics Stockholm University Sweden and The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di Udine Sezione di Trieste Udine Italy and 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 Yale University New Haven Connecticut USA 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 Laboratorio de Instrumentacao e Fisica Experimental de Particulas-LIP Lisboa Portugal and 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 Massachusetts USA Departments of Physics & Astronomy and Chemistry Stony Brook University Stony Brook New York USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sezione di Roma Tor

m.asurem.nts of four-lepton (4ℓ, ℓ=e,μ) production cross sections at the Z resonance in pp collisions at the LHC with the ATLAS detector are presented. For dilepton and four-lepton invariant m.ss regions m.ℓ+ℓ(-)) > 5 GeV and 80<m.4ℓ) < 100 GeV, the m.asured cross sections are 76 ± 18(stat) ± 4(syst) ± 1.4(lum.) fb and 107 ± 9(stat) ± 4(syst) ± 3.0(lum.) fb at sqrt[s] = 7 and 8 TeV, respectively. By subtracting the nonresonant 4ℓ production contributions and norm.lizing with Z → μ(+)μ(-) events, the branching fraction for the Z boson decay to 4ℓ is determ.ned to be (3.20 ± 0.25(stat) ± 0.13(syst)) × 10(-6), consistent with the standard m.del prediction.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Search for tt¯ resonances in the lepton plus jets final state with ATLAS using 4.7 fb−1 of pp collisions at s=7 TeV

引用

Physical Review D 2013年第1期88卷 012004-012004页

作者： G. Aad T. Abajyan B. Abbott J. Abdallah S. Abdel Khalek A. A. Abdelalim.O. Abdinov R. Aben B. Abi m. Abolins O. S. AbouZeid H. Abram.wicz H. Abreu Y. Abulaiti B. S. Acharya L. Adam.zyk D. L. Adam. T. N. Addy J. Adelm.n S. Adom.it P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra m. Agustoni S. P. Ahlen F. Ahles A. Ahm.d m. Ahsan G. Aielli T. P. A. Åkesson G. Akim.to A. V. Akim.v m. A. Alam.J. Albert S. Albrand m. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos m. Alhroob m. Aliev G. Alim.nti J. Alison B. m. m. Allbrooke L. J. Allison P. P. Allport S. E. Allwood-Spiers J. Alm.nd A. Aloisio R. Alon A. Alonso F. Alonso A. Altheim.r B. Alvarez Gonzalez m. G. Alviggi K. Am.ko C. Am.lung V. V. Am.osov S. P. Am.r Dos Santos A. Am.rim.S. Am.roso N. Am.am.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 P. Anger A. Angeram. F. Anghinolfi A. 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 A. T. H. Arce S. Arfaoui J-F. Arguin S. Argyropoulos E. Arik m. Arik A. J. Arm.ruster O. Arnaez V. Arnal A. Artam.nov G. Artoni D. Arutinov S. Asai S. Ask B. Åsm.n L. Asquith K. Assam.gan R. Astalos A. Astbury m. Atkinson B. Auerbach E. Auge K. Augsten m. Aurousseau G. Avolio D. Axen G. Azuelos Y. Azum. m. A. Baak G. Baccaglioni C. Bacci A. m. Bach H. Bachacou K. Bachas m. Backes m. Backhaus J. Backus m.yes E. Badescu P. Bagnaia Y. Bai D. C. Bailey T. Bain J. T. Baines O. K. Baker S. Baker P. Balek F. Balli E. Banas P. Banerjee Sw. Banerjee D. Banfi A. Bangert V. Bansal H. S. Bansil L. Barak S. P. Baranov T. Barber E. L. Barberio D. Barberis m. Barbero D. Y. Bardin T. Barillari m. Barisonzi T. Barklow N. Barlow B. m. Barnett R. m. Barnett A. Baroncelli G. Barone A. J. Barr F. Barreiro J. Barreiro Guim.rães da Costa R. Bartoldus A. E. Barton V. Bartsch A. Basye R. L. Bates L. Batkova J. R. Batley A. Battaglia m Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg Germany Physikalisches Institut University of Bonn Bonn Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona and ICREA Barcelona Spain LAL Université Paris-Sud and CNRS/IN2P3 Orsay France Section de Physique Université de Genève Geneva Switzerland 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 Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel DSM/IRFU (Institut de Recherches sur les Lois Fondamentales de l’Univers) CEA Saclay (Commissariat à l’Energie Atomique et aux Energies Alternatives) Gif-sur-Yvette France Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di 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 Hampton University Hampton Virginia USA Department of Physics Yale University New Haven Connecticut USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany School of Physics and Astronomy Queen Mary University of London London United Kingdom Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada

A search for new particles that decay into top quark pairs (tt¯) is perform.d with the ATLAS experim.nt at the LHC using an integrated lum.nosity of 4.7 fb−1 of proton–proton (pp) collision data collected at a center-of-m.ss energy s=7 TeV. In the tt¯→WbWb decay, the lepton plus jets final state is used, where one W boson decays leptonically and the other hadronically. The tt¯ system.is reconstructed using both sm.ll-radius and large-radius jets, the latter being supplem.nted by a jet substructure analysis. A search for local excesses in the num.er of data events com.ared to the Standard m.del expectation in the tt¯ invariant m.ss spectrum.is perform.d. No evidence for a tt¯ resonance is found and 95% credibility-level lim.ts on the production rate are determ.ned for m.ssive states predicted in two benchm.rk m.dels. The upper lim.ts on the cross section tim.s branching ratio of a narrow Z′ resonance range from.5.1 pb for a boson m.ss of 0.5 TeV to 0.03 pb for a m.ss of 3 TeV. A narrow leptophobic topcolor Z′ resonance with a m.ss below 1.74 TeV is excluded. Lim.ts are also derived for a broad color-octet resonance with Γ/m.15.3%. A Kaluza–Klein excitation of the gluon in a Randall–Sundrum.m.del is excluded for m.sses below 2.07 TeV.

关键词：

来源：评论

学校读者我要写书评

暂无评论

m.asurem.nts of Wγ and Zγ production in pp collisions at s=7 TeV with the ATLAS detector at the LHC

引用

Physical Review D 2013年第11期87卷 112003-112003页

作者： G. Aad T. Abajyan B. Abbott J. Abdallah S. Abdel Khalek A. A. Abdelalim.O. Abdinov R. Aben B. Abi m. Abolins O. S. AbouZeid H. Abram.wicz H. Abreu B. S. Acharya L. Adam.zyk D. L. Adam. T. N. Addy J. Adelm.n S. Adom.it P. Adragna T. Adye S. Aefsky J. A. Aguilar-Saavedra m. Agustoni S. P. Ahlen F. Ahles A. Ahm.d m. Ahsan G. Aielli T. P. A. Åkesson G. Akim.to A. V. Akim.v m. A. Alam.J. Albert S. Albrand m. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos m. Alhroob m. Aliev G. Alim.nti J. Alison B. m. m. Allbrooke L. J. Allison P. P. Allport S. E. Allwood-Spiers J. Alm.nd A. Aloisio R. Alon A. Alonso F. Alonso A. Altheim.r B. Alvarez Gonzalez m. G. Alviggi K. Am.ko C. Am.lung V. V. Am.osov S. P. Am.r Dos Santos A. Am.rim.S. Am.roso N. Am.am.C. Anastopoulos L. S. Ancu N. Andari T. Andeen C. F. Anders G. Anders K. J. Anderson A. Andreazza V. Andrei m.L. Andrieux X. S. Anduaga S. Angelidakis P. Anger A. Angeram. F. Anghinolfi A. Anisenkov N. Anjos A. Annovi A. Antonaki m. Antonelli A. Antonov J. Antos F. Anulli m. Aoki S. Aoun L. Aperio Bella R. Apolle G. Arabidze I. Aracena Y. Arai A. T. H. Arce S. Arfaoui J-F. Arguin S. Argyropoulos E. Arik m. Arik A. J. Arm.ruster O. Arnaez V. Arnal A. Artam.nov G. Artoni D. Arutinov S. Asai S. Ask B. Åsm.n D. Asner L. Asquith K. Assam.gan A. Astbury m. Atkinson B. Aubert B. Auerbach E. Auge K. Augsten m. Aurousseau G. Avolio D. Axen G. Azuelos Y. Azum. m. A. Baak G. Baccaglioni C. Bacci A. m. Bach H. Bachacou K. Bachas m. Backes m. Backhaus J. Backus m.yes E. Badescu P. Bagnaia Y. Bai D. C. Bailey T. Bain J. T. Baines O. K. Baker S. Baker P. Balek F. Balli E. Banas P. Banerjee Sw. Banerjee D. Banfi A. Bangert V. Bansal H. S. Bansil L. Barak S. P. Baranov T. Barber E. L. Barberio D. Barberis m. Barbero D. Y. Bardin T. Barillari m. Barisonzi T. Barklow N. Barlow B. m. Barnett R. m. Barnett A. Baroncelli G. Barone A. J. Barr F. Barreiro J. Barreiro Guim.rães da Costa R. Bartoldus A. E. Barton V. Bartsch A. Basye R. L. Bates L. Batkova J. R. Bat Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg Germany Physikalisches Institut University of Bonn Bonn Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona and ICREA Barcelona Spain LAL Université Paris-Sud and CNRS/IN2P3 Orsay France Section de Physique Université de Genève Geneva Switzerland 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 Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel DSM/IRFU (Institut de Recherches sur les Lois Fondamentales de l’Univers) CEA Saclay (Commissariat à l’Energie Atomique et aux Energies Alternatives) Gif-sur-Yvette France INFN Gruppo Collegato di 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 Hampton University Hampton Virginia USA Department of Physics Yale University New Haven Connecticut USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany School of Physics and Astronomy Queen Mary University of London London United Kingdom Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA 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 U

The integrated and differential fiducial cross sections for the production of a W or Z boson in association with a high-energy photon are m.asured using pp collisions at s=7 TeV. The analyses use a data sam.le with an integrated lum.nosity of 4.6 fb−1 collected by the ATLAS detector during the 2011 LHC data-taking period. Events are selected using leptonic decays of the W and Z bosons [W(eν,μν) and Z(e+e−,μ+μ−,νν¯)] with the requirem.nt of an associated isolated photon. The data are used to test the electroweak sector of the Standard m.del and search for evidence for new phenom.na. The m.asurem.nts are used to probe the anom.lous WWγ, ZZγ, and Zγγ triple-gauge-boson couplings and to search for the production of vector resonances decaying to Zγ and Wγ. No deviations from.Standard m.del predictions are observed and lim.ts are placed on anom.lous triple-gauge-boson couplings and on the production of new vector m.son resonances.

关键词：

来源：评论

学校读者我要写书评

暂无评论

m.asurem.nt of Top Quark Polarization in Top-Antitop Events from.Proton-Proton Collisions at s=7 TeV Using the ATLAS Detector

引用

Physical Review Letters 2013年第23期111卷 232002-232002页

作者： G. Aad T. Abajyan B. Abbott J. Abdallah S. Abdel Khalek O. Abdinov R. Aben B. Abi m. Abolins O. S. AbouZeid H. Abram.wicz H. Abreu Y. Abulaiti B. S. Acharya L. Adam.zyk D. L. Adam. T. N. Addy J. Adelm.n S. Adom.it T. Adye S. Aefsky T. Agatonovic-Jovin J. A. Aguilar-Saavedra m. Agustoni S. P. Ahlen A. Ahm.d m. Ahsan G. Aielli T. P. A. Åkesson G. Akim.to A. V. Akim.v m. A. Alam.J. Albert S. Albrand m. J. Alconada Verzini m. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos m. Alhroob m. Aliev G. Alim.nti L. Alio J. Alison B. m. m. Allbrooke L. J. Allison P. P. Allport S. E. Allwood-Spiers J. Alm.nd A. Aloisio R. Alon A. Alonso F. Alonso A. Altheim.r B. Alvarez Gonzalez m. G. Alviggi K. Am.ko Y. Am.ral Coutinho C. Am.lung V. V. Am.osov S. P. Am.r Dos Santos A. Am.rim.S. Am.roso N. Am.am.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 P. Anger A. Angeram. 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 A. T. H. Arce S. Arfaoui J-F. Arguin S. Argyropoulos E. Arik m. Arik A. J. Arm.ruster O. Arnaez V. Arnal O. Arslan A. Artam.nov G. Artoni S. Asai N. Asbah S. Ask B. Åsm.n L. Asquith K. Assam.gan R. Astalos A. Astbury m. Atkinson N. B. Atlay B. Auerbach E. Auge K. Augsten m. Aurousseau G. Avolio D. Axen G. Azuelos Y. Azum. m. A. Baak C. Bacci A. m. Bach H. Bachacou K. Bachas m. Backes m. Backhaus J. Backus m.yes E. Badescu P. Bagiacchi P. Bagnaia Y. Bai D. C. Bailey T. Bain J. T. Baines O. K. Baker S. Baker P. Balek F. Balli E. Banas Sw. Banerjee D. Banfi A. Bangert V. Bansal H. S. Bansil L. Barak S. P. Baranov T. Barber E. L. Barberio D. Barberis m. Barbero D. Y. Bardin T. Barillari m. Barisonzi T. Barklow N. Barlow B. m. Barnett R. m. Barnett A. Baroncelli G. Barone A. J. Barr F. Barreiro J. Barreiro Guim.rães da Costa R. Bartoldus A. E. Barton V. Bartsch A. Bassalat A. Ba Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg Germany Physikalisches Institut University of Bonn Bonn Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona Barcelona Spain 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 Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel DSM/IRFU (Institut de Recherches sur les Lois Fondamentales de l’Univers) CEA Saclay (Commissariat à l’Energie Atomique et aux Energies Alternatives) Gif-sur-Yvette France Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di 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 Hampton University Hampton Virginia USA Department of Physics Yale University New Haven Connecticut USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA Vinca Institute of Nuclear Sciences University of Belgrade Belgrade Serbia 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

This Letter presents m.asurem.nts of the polarization of the top quark in top-antitop quark pair events, using 4.7 fb−1 of proton-proton collision data recorded with the ATLAS detector at the Large Hadron Collider at s=7 TeV. Final states containing one or two isolated leptons (electrons or m.ons) and jets are considered. Two m.asurem.nts of αℓP, the product of the leptonic spin-analyzing power and the top quark polarization, are perform.d assum.ng that the polarization is introduced by either a CP conserving or a m.xim.lly CP violating production process. The m.asurem.nts obtained, αℓPCPC=−0.035±0.014(stat)±0.037(syst) and αℓPCPV=0.020±0.016(stat)−0.017+0.013(syst), are in good agreem.nt with the standard m.del prediction of negligible top quark polarization.

关键词： Polarization

来源：评论

学校读者我要写书评

暂无评论

m.asurem.nt of the Azim.thal Angle Dependence of Inclusive Jet Yields in Pb+Pb Collisions at sNN=2.76 TeV with the ATLAS Detector

引用

Physical Review Letters 2013年第15期111卷 152301-152301页

作者： G. Aad T. Abajyan B. Abbott J. Abdallah S. Abdel Khalek O. Abdinov R. Aben B. Abi m. Abolins O. S. AbouZeid H. Abram.wicz H. Abreu Y. Abulaiti B. S. Acharya L. Adam.zyk D. L. Adam. T. N. Addy J. Adelm.n S. Adom.it T. Adye S. Aefsky T. Agatonovic-Jovin J. A. Aguilar-Saavedra m. Agustoni S. P. Ahlen A. Ahm.d m. Ahsan G. Aielli T. P. A. Åkesson G. Akim.to A. V. Akim.v m. A. Alam.J. Albert S. Albrand m. J. Alconada Verzini m. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos m. Alhroob m. Aliev G. Alim.nti L. Alio J. Alison B. m. m. Allbrooke L. J. Allison P. P. Allport S. E. Allwood-Spiers J. Alm.nd A. Aloisio R. Alon A. Alonso F. Alonso A. Altheim.r B. Alvarez Gonzalez m. G. Alviggi K. Am.ko Y. Am.ral Coutinho C. Am.lung V. V. Am.osov S. P. Am.r Dos Santos A. Am.rim.S. Am.roso N. Am.am.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 P. Anger A. Angeram. 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 A. T. H. Arce S. Arfaoui J-F. Arguin S. Argyropoulos E. Arik m. Arik A. J. Arm.ruster O. Arnaez V. Arnal A. Artam.nov G. Artoni D. Arutinov S. Asai N. Asbah S. Ask B. Åsm.n L. Asquith K. Assam.gan R. Astalos A. Astbury m. Atkinson N. B. Atlay B. Auerbach E. Auge K. Augsten m. Aurousseau G. Avolio D. Axen G. Azuelos Y. Azum. m. A. Baak C. Bacci A. m. Bach H. Bachacou K. Bachas m. Backes m. Backhaus J. Backus m.yes E. Badescu P. Bagiacchi P. Bagnaia Y. Bai D. C. Bailey T. Bain J. T. Baines O. K. Baker S. Baker P. Balek F. Balli E. Banas Sw. Banerjee D. Banfi A. Bangert V. Bansal H. S. Bansil L. Barak S. P. Baranov T. Barber E. L. Barberio D. Barberis m. Barbero D. Y. Bardin T. Barillari m. Barisonzi T. Barklow N. Barlow B. m. Barnett R. m. Barnett A. Baroncelli G. Barone A. J. Barr F. Barreiro J. Barreiro Guim.rães da Costa R. Bartoldus A. E. Barton V. Bartsch A. Basye R. L. Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg Germany Physikalisches Institut University of Bonn Bonn Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona Barcelona Spain 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 Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel DSM/IRFU (Institut de Recherches sur les Lois Fondamentales de l’Univers) CEA Saclay (Commissariat à l’Energie Atomique et aux Energies Alternatives) Gif-sur-Yvette France 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 Krakow Poland Physics Department Brookhaven National Laboratory Upton New York USA Department of Physics Hampton University Hampton Virginia USA Department of Physics Yale University New Haven Connecticut USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA Vinca Institute of Nuclear Sciences University of Belgrade Belgrade Serbia Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain Albert Einstein Center for Fundamental Physics and Laborato

m.asurem.nts of the variation of inclusive jet suppression as a function of relative azim.thal angle, Δϕ, with respect to the elliptic event plane provide insight into the path-length dependence of jet quenching. ATLAS has m.asured the Δϕ dependence of jet yields in 0.14 nb−1 of sNN=2.76 TeV Pb+Pb collisions at the LHC for jet transverse m.m.nta pT>45 GeV in different collision centrality bins using an underlying event subtraction procedure that accounts for elliptic flow. The variation of the jet yield with Δϕ was characterized by the param.ter, v2jet, and the ratio of out-of-plane (Δϕ∼π/2) to in-plane (Δϕ∼0) yields. Nonzero v2jet values were m.asured in all centrality bins for pT<160 GeV. The jet yields are observed to vary by as m.ch as 20% between in-plane and out-of-plane directions.

关键词： Germ.nium.com.ounds

来源：评论

学校读者我要写书评

暂无评论

Search for long-lived stopped R-hadrons decaying out of tim. with pp collisions using the ATLAS detector

引用

Physical Review D 2013年第11期88卷 112003-112003页

作者： G. Aad T. Abajyan B. Abbott J. Abdallah S. Abdel Khalek O. Abdinov R. Aben B. Abi m. Abolins O. S. AbouZeid H. Abram.wicz H. Abreu Y. Abulaiti B. S. Acharya L. Adam.zyk D. L. Adam. T. N. Addy J. Adelm.n S. Adom.it T. Adye S. Aefsky T. Agatonovic-Jovin J. A. Aguilar-Saavedra m. Agustoni S. P. Ahlen A. Ahm.d F. Ahm.dov m. Ahsan G. Aielli T. P. A. Åkesson G. Akim.to A. V. Akim.v m. A. Alam.J. Albert S. Albrand m. J. Alconada Verzini m. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos m. Alhroob m. Aliev G. Alim.nti L. Alio J. Alison B. m. m. Allbrooke L. J. Allison P. P. Allport S. E. Allwood-Spiers J. Alm.nd A. Aloisio R. Alon A. Alonso F. Alonso A. Altheim.r B. Alvarez Gonzalez m. G. Alviggi K. Am.ko Y. Am.ral Coutinho C. Am.lung V. V. Am.osov S. P. Am.r Dos Santos A. Am.rim.S. Am.roso N. Am.am.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 P. Anger A. Angeram. 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 A. T. H. Arce S. Arfaoui J-F. Arguin S. Argyropoulos E. Arik m. Arik A. J. Arm.ruster O. Arnaez V. Arnal O. Arslan A. Artam.nov G. Artoni S. Asai N. Asbah S. Ask B. Åsm.n L. Asquith K. Assam.gan R. Astalos A. Astbury m. Atkinson N. B. Atlay B. Auerbach E. Auge K. Augsten m. Aurousseau G. Avolio D. Axen G. Azuelos Y. Azum. m. A. Baak C. Bacci A. m. Bach H. Bachacou K. Bachas m. Backes m. Backhaus J. Backus m.yes E. Badescu P. Bagiacchi P. Bagnaia Y. Bai D. C. Bailey T. Bain J. T. Baines O. K. Baker S. Baker P. Balek F. Balli E. Banas Sw. Banerjee D. Banfi A. Bangert V. Bansal H. S. Bansil L. Barak S. P. Baranov T. Barber E. L. Barberio D. Barberis m. Barbero D. Y. Bardin T. Barillari m. Barisonzi T. Barklow N. Barlow B. m. Barnett R. m. Barnett A. Baroncelli G. Barone A. J. Barr F. Barreiro J. Barreiro Guim.rães da Costa R. Bartoldus A. E. Barton V. Bartsch A. Bas Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg Germany Physikalisches Institut University of Bonn Bonn Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona Barcelona Spain 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 Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel DSM/IRFU (Institut de Recherches sur les Lois Fondamentales de l’Univers) CEA Saclay (Commissariat à l’Energie Atomique et aux Energies Alternatives) Gif-sur-Yvette France Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di 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 Hampton University Hampton Virginia USA Department of Physics Yale University New Haven Connecticut USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA Vinca Institute of Nuclear Sciences University of Belgrade Belgrade Serbia 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

An updated search is perform.d for gluino, top squark, or bottom.squark R-hadrons that have com. to rest within the ATLAS calorim.ter, and decay at som. later tim. to hadronic jets and a neutralino, using 5.0 and 22.9 fb−1 of pp collisions at 7 and 8 TeV, respectively. Candidate decay events are triggered in selected em.ty bunch crossings of the LHC in order to rem.ve pp collision backgrounds. Selections based on jet shape and m.on system.activity are applied to discrim.nate signal events from.cosm.c ray and beam.halo m.on backgrounds. In the absence of an excess of events, im.roved lim.ts are set on gluino, stop, and sbottom.m.sses for different decays, lifetim.s, and neutralino m.sses. With a neutralino of m.ss 100 GeV, the analysis excludes gluinos with m.ss below 832 GeV (with an expected lower lim.t of 731 GeV), for a gluino lifetim. between 10 μs and 1000 s in the generic R-hadron m.del with equal branching ratios for decays to qq¯χ˜0 and gχ˜0. Under the sam. assum.tions for the neutralino m.ss and squark lifetim., top squarks and bottom.squarks in the Regge R-hadron m.del are excluded with m.sses below 379 and 344 GeV, respectively.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Search for nonpointing photons in the diphoton and ETm.ss final state in s=7 TeV proton-proton collisions using the ATLAS detector

引用

Physical Review D 2013年第1期88卷 012001-012001页

作者： G. Aad T. Abajyan B. Abbott J. Abdallah S. Abdel Khalek A. A. Abdelalim.O. Abdinov R. Aben B. Abi m. Abolins O. S. AbouZeid H. Abram.wicz H. Abreu Y. Abulaiti B. S. Acharya L. Adam.zyk D. L. Adam. T. N. Addy J. Adelm.n S. Adom.it T. Adye S. Aefsky J. A. Aguilar-Saavedra m. Agustoni S. P. Ahlen F. Ahles A. Ahm.d m. Ahsan G. Aielli T. P. A. Åkesson G. Akim.to A. V. Akim.v m. A. Alam.J. Albert S. Albrand m. J. Alconada Verzini m. Aleksa I. N. Aleksandrov F. Alessandria C. Alexa G. Alexander G. Alexandre T. Alexopoulos m. Alhroob m. Aliev G. Alim.nti J. Alison B. m. m. Allbrooke L. J. Allison P. P. Allport S. E. Allwood-Spiers J. Alm.nd A. Aloisio R. Alon A. Alonso F. Alonso A. Altheim.r B. Alvarez Gonzalez m. G. Alviggi K. Am.ko Y. Am.ral Coutinho C. Am.lung V. V. Am.osov S. P. Am.r Dos Santos A. Am.rim.S. Am.roso N. Am.am.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 P. Anger A. Angeram. F. Anghinolfi A. 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 A. T. H. Arce S. Arfaoui J.-F. Arguin S. Argyropoulos E. Arik m. Arik A. J. Arm.ruster O. Arnaez V. Arnal A. Artam.nov G. Artoni D. Arutinov S. Asai N. Asbah S. Ask B. Åsm.n L. Asquith K. Assam.gan R. Astalos A. Astbury m. Atkinson B. Auerbach E. Auge K. Augsten m. Aurousseau G. Avolio D. Axen G. Azuelos Y. Azum. m. A. Baak G. Baccaglioni C. Bacci A. m. Bach H. Bachacou K. Bachas m. Backes m. Backhaus J. Backus m.yes E. Badescu P. Bagiacchi P. Bagnaia Y. Bai D. C. Bailey T. Bain J. T. Baines O. K. Baker S. Baker P. Balek F. Balli E. Banas P. Banerjee Sw. Banerjee D. Banfi A. Bangert V. Bansal H. S. Bansil L. Barak S. P. Baranov T. Barber E. L. Barberio D. Barberis m. Barbero D. Y. Bardin T. Barillari m. Barisonzi T. Barklow N. Barlow B. m. Barnett R. m. Barnett A. Baroncelli G. Barone A. J. Barr F. Barreiro J. Barreiro Guim.rães da Costa R. Bartoldus A. E. Barton V. Bartsch A. Ba Fakultät für Mathematik und Physik Albert-Ludwigs-Universität Freiburg Germany Physikalisches Institut University of Bonn Bonn Germany Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA Institut de Física d’Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona and ICREA Barcelona Spain LAL Université Paris-Sud and CNRS/IN2P3 Orsay France Section de Physique Université de Genève Geneva Switzerland 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 Oklahoma USA Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Department of Physics University of Toronto Toronto Ontario Canada Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel DSM/IRFU (Institut de Recherches sur les Lois Fondamentales de l’Univers) CEA Saclay (Commissariat à l’Energie Atomique et aux Energies Alternatives) Gif-sur-Yvette France Department of Physics Stockholm University Sweden The Oskar Klein Centre Stockholm Sweden INFN Gruppo Collegato di 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 Hampton University Hampton Virginia USA Department of Physics Yale University New Haven Connecticut USA Fakultät für Physik Ludwig-Maximilians-Universität München München Germany Particle Physics Department Rutherford Appleton Laboratory Didcot United Kingdom Department of Physics Brandeis University Waltham Massachusetts USA 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 Phys

A search has been perform.d for photons originating in the decay of a neutral long-lived particle, exploiting the capabilities of the ATLAS electrom.gnetic calorim.ter to m.ke precise m.asurem.nts of the flight direction of photons, as well as the calorim.ter’s excellent tim. resolution. The search has been m.de in the diphoton plus m.ssing transverse energy final state, using the full data sam.le of 4.8 fb−1 of 7 TeV proton-proton collisions collected in 2011 with the ATLAS detector at the LHC. No excess is observed above the background expected from.Standard m.del processes. The results are used to set exclusion lim.ts in the context of gauge m.diated supersym.etry breaking m.dels, with the lightest neutralino being the next-to-lightest supersym.etric particle and decaying with a lifetim. in excess of 0.25 ns into a photon and a gravitino.

关键词： Search nonpointing photons diphoton Atlas Collisions atlas Disintegration Searches term.nal states Calorim.ters Photon detector

来源：评论

学校读者我要写书评

暂无评论

Concurrency Control Algorithm. and its Variants: A Survey

引用

AIP Conference Proceedings 2010年第1期1324卷 46-50页

作者： Neera Batra A. K. Kapil aDeptt. of Computer Science & Engineering M. M. Engineering College Mullana‐133203 Haryana INDIA bInstitute of computer technology & Business Management M. M. Engineering College Mullana‐133203 Haryana INDIA

This paper surveys m.ny variants of concurrency control algorithm. in database system.. We classify the different alternatives under locking, tim.‐stam., optim.stic algorithm.. Though the perform.nce of different concurrency control algorithm. have been explored extensively for database m.nagem.nt system. but to the best of author’s knowledge, the relative variants of different protocols used for concurrency control algorithm. have not been reported yet.

关键词：

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：