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arXiv 2017年

作者： Kasliwal, M.M. Nakar, E. Singer, L.P. Kaplan, D.L. Cook, D.O. van Sistine, A. Lau, R.M. Fremling, C. Gottlieb, O. Jencson, J.E. Adams, S.M. Feindt, U. Hotokezaka, K. Ghosh, S. Perley, D.A. Yu, P.-C. Piran, T. Allison, J.R. Anupama, G.C. Balasubramanian, A. Bannister, K.W. Bally, J. Barnes, J. Barway, S. Bellm, E. Bhalerao, V. Bhattacharya, D. Blagorodnova, N. Bloom, J.S. Brady, P.R. Cannella, C. Chatterjee, D. Cenko, S.B. Cobb, B.E. Copperwheat, C. Corsi, A. De, K. Dobie, D. Emery, S.W.K. Evans, P.A. Fox, O.D. Frail, D.A. Frohmaier, C. Goobar, A. Hallinan, G. Harrison, F. Helou, G. Hinderer, T. Ho, A.Y.Q. Horesh, A. Ip, W.-H. Itoh, R. Kasen, D. Kim, H. Kuin, N.P.M. Kupfer, T. Lynch, C. Madsen, K. Mazzali, P.A. Miller, A.A. Mooley, K. Murphy, T. Ngeow, C.-C. Nichols, D. Nissanke, S. Nugent, P. Ofek, E.O. Qi, H. Quimby, R.M. Rosswog, S. Rusu, F. Sadler, E.M. Schmidt, P. Sollerman, J. Steele, I. Williamson, A.R. Xu, Y. Yan, L. Yatsu, Y. Zhang, C. Zhao, W. Division of Physics Math and Astronomy California Institute of Technology 1200 East California Boulevard PasadenaCA91125 United States Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv69978 Israel Astroparticle Physics Laboratory NASA Goddard Space Flight Center Joint Space-Science Institute University of Maryland College ParkMD20742 United States Department of Physics University of Wisconsin MilwaukeeWI53201 United States The Oskar Klein Centre Department of Physics Stockholm University AlbaNova StockholmSE-106 91 Sweden Center for Computational Astrophysics Simons Foundation Flatiron Institute 162 5th Ave New YorkNY10010 United States Astrophysics Research Institute Liverpool John Moores University IC2 Liverpool Science Park 146 Browlow Hill LiverpoolL3 5RF United Kingdom Graduate Institute of Astronomy National Central University No. 300 Zhongda Rd. Zhongli Dist. Taoyuan City32001 Taiwan Racah Institute of Physics The Hebrew University of Jerusalem Jerusalem91904 Israel Sydney Institute for Astronomy School of Physics A28 University of Sydney NSW2006 Australia Indian Institute of Astrophysics II Block Koramangala Bangalore560034 India Indian Institute of Science Education and Research Dr. Homi Bhabha Road Pashan Pune411008 India Australia Telescope National Facility Commonwealth Scientific and Industrial Research Organisation Astronomy and Space Science PO Box 76 EppingNSW1710 Australia University of Colorado Boulder United States Columbia Astrophysics Laboratory Columbia University New YorkNY10027 United States P.O. Box 9 Observatory Cape Town7935 South Africa Department of Astronomy University of Washington SeattleWA98195 United States Department of Physics Indian Institute of Technology Bombay Mumbai400076 India Inter-University Centre for Astronomy and Astrophysics P O Ba 4 Ganeskhind Pune411007 India Department of Astronomy University of California BerkeleyCA94720-

Merging neutron stars offer an exquisite laboratory for simultaneously studying strong-field gravity and matter in extreme environments. We establish the physical association of an electromagnetic counterpart (EM170817) to gravitational waves (GW170817) detected from merging neutron stars. By synthesizing a panchromatic dataset, we demonstrate that merging neutron stars are a long-sought production site forging heavy elements by r-process nucleosynthesis. The weak gamma-rays seen in EM170817 are dissimilar to classical short gamma-ray bursts with ultra-relativistic jets. Instead, we suggest that breakout of a wide-angle, mildly-relativistic cocoon engulfing the jet elegantly explains the low-luminosity gamma-rays, the high-luminosity ultraviolet-optical-infrared and the delayed radio/X-ray emission. We posit that all merging neutron stars may lead to a wide-angle cocoon breakout;sometimes accompanied by a successful jet and sometimes a choked jet. Copyright © 2017, The Authors. All rights reserved.

关键词： Merging

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Erratum to: Production of π 0 and η mesons up to high transverse momentum in pp collisions at 2.76 TeV

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The European Physical Journal C 2017年第9期77卷 1-7页

作者： S. Acharya D. Adamová M. M. Aggarwal G. Aglieri Rinella M. Agnello N. Agrawal Z. Ahammed N. Ahmad S. U. Ahn S. Aiola A. Akindinov S. N. Alam D. S. D. Albuquerque D. Aleksandrov B. Alessandro D. Alexandre R. Alfaro Molina A. Alici A. Alkin J. Alme T. Alt I. Altsybeev C. Alves Garcia Prado M. An C. Andrei H. A. Andrews A. Andronic V. Anguelov C. Anson T. Antičić F. Antinori P. Antonioli R. Anwar L. Aphecetche H. Appelshäuser S. Arcelli R. Arnaldi O. W. Arnold I. C. Arsene M. Arslandok B. Audurier A. Augustinus R. Averbeck T. Awes M. D. Azmi A. Badalà Y. W. Baek S. Bagnasco R. Bailhache R. Bala A. Baldisseri M. Ball R. C. Baral A. M. Barbano R. Barbera F. Barile L. Barioglio G. G. Barnaföldi L. S. Barnby V. Barret P. Bartalini K. Barth J. Bartke E. Bartsch M. Basile N. Bastid S. Basu B. Bathen G. Batigne A. Batista Camejo B. Batyunya P. C. Batzing I. G. Bearden H. Beck C. Bedda N. K. Behera I. Belikov F. Bellini H. Bello Martinez R. Bellwied L. G. E. Beltran V. Belyaev G. Bencedi S. Beole A. Bercuci Y. Berdnikov D. Berenyi R. A. Bertens D. Berzano L. Betev A. Bhasin I. R. Bhat A. K. Bhati B. Bhattacharjee J. Bhom L. Bianchi N. Bianchi C. Bianchin J. Bielčík J. Bielčíková A. Bilandzic G. Biro R. Biswas S. Biswas J. T. Blair D. Blau C. Blume G. Boca F. Bock A. Bogdanov L. Boldizsár M. Bombara G. Bonomi M. Bonora J. Book H. Borel A. Borissov M. Borri E. Botta C. Bourjau P. Braun-Munzinger M. Bregant T. A. Broker T. A. Browning M. Broz E. J. Brucken E. Bruna G. E. Bruno D. Budnikov H. Buesching S. Bufalino P. Buhler S. A. I. Buitron P. Buncic O. Busch Z. Buthelezi J. B. Butt J. T. Buxton J. Cabala D. Caffarri H. Caines A. Caliva E. Calvo Villar P. Camerini A. A. Capon F. Carena W. Carena F. Carnesecchi J. Castillo Castellanos A. J. Castro E. A. R. Casula C. Ceballos Sanchez P. Cerello B. Chang S. Chapeland M. Chartier J. L. Charvet S. Chattopadhyay A. Chauvin M. Cherney C. Cheshkov B. Cheynis V. Chibante Barroso D. D. Chinellato S. Cho P. Chochula K. Choi M. Chojnacki S. Choudhury P. Christakoglou C. H. Christensen P. C Variable Energy Cyclotron Centre Kolkata India Nuclear Physics Institute Academy of Sciences of the Czech Republic Řež u Prahy Czech Republic Physics Department Panjab University Chandigarh India European Organization for Nuclear Research (CERN) Geneva Switzerland Dipartimento DISAT del Politecnico and Sezione INFN Turin Italy Indian Institute of Technology Bombay (IIT) Mumbai India Department of Physics Aligarh Muslim University Aligarh India Korea Institute of Science and Technology Information Taejeon South Korea Yale University New Haven USA Institute for Theoretical and Experimental Physics Moscow Russia Universidade Estadual de Campinas (UNICAMP) Campinas Brazil National Research Centre Kurchatov Institute Moscow Russia Sezione INFN Turin Italy School of Physics and Astronomy University of Birmingham Birmingham UK Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico Centro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi’ Rome Italy Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Bologna Italy Sezione INFN Bologna Italy Bogolyubov Institute for Theoretical Physics Kiev Ukraine Department of Physics and Technology University of Bergen Bergen Norway Institut für Kernphysik Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany V. Fock Institute for Physics St. Petersburg State University St. Petersburg Russia Universidade de São Paulo (USP) São Paulo Brazil Central China Normal University Wuhan China National Institute for Physics and Nuclear Engineering Bucharest Romania Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Physics Department Creighton University Omaha USA Rudjer Bošković Institute Zagreb Croatia Sezione INFN Padua Italy University of Houston Houston USA SUBATECH IMT Atlantique Université de Nan

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Line-intensity mapping: 2017 status report

arXiv

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arXiv 2017年

作者： Kovetz, E.D. Viero, M.P. Lidz, A. Newburgh, L. Rahman, M. Switzer, E. Kamionkowski, M. Aguirre, J. Alvarez, M. Bock, J. Bond, J.R. Bower, G. Bradford, C.M. Breysse, P.C. Bull, P. Chang, T.C. Cheng, Y.T. Chung, D. Cleary, K. Cooray, A. Crites, A. Croft, R. Doré, O. Eastwood, M. Ferrara, A. Fonseca, J. Jacobs, D. Keating, G. Lagache, G. Lakhlani, G. Liu, A. Moodley, K. Murray, N. Penin, A. Popping, G. Pullen, A. Reichers, D. Saito, S. Saliwanchik, B. Santos, M. Somerville, R. Stacey, G. Stein, G. Villaescusa-Navarro, F. Visbal, E. Weltman, A. Wolz, L. Zemcov, M. Department of Physics and Astronomy Johns Hopkins University 3400 N. Charles St. BaltimoreMD21218 United States Kavli Institute for Particle Astrophysics and Cosmology Stanford University 382 Via Pueblo Mall StanfordCA94305 United States Department of Physics and Astronomy University of Pennsylvania 209 South 33rd Street PhiladelphiaPA19104 United States Department of Physics Yale University New HavenCT06520 United States NASA Goddard Space Flight Center GreenbeltMD United States Canadian Institute for Theoretical Astrophysics University of Toronto 60 St. George st. TorontoONM5S 3H8 Canada Division of Physics Math and Astronomy California Institute of Technology 1200 E. California Blvd PasadenaCA91125 United States Academia Sinica Institute of Astronomy and Astrophysics 645 N. A'ohoku Place HiloHI96720 United States Jet Propulsion Laboratory California Institute of Technology 4800 Oak Grove Drive PasadenaCA91109 United States Kavli Institute for Particle Astrophysics and Cosmology Physics Department Stanford University StanfordCA94305 United States McWilliams Center for Cosmology Department of Physics Carnegie Mellon University PittsburghPA15213 United States Normale Superiore Piazza dei Cavalieri 7 Pisa56126 Italy Department of Physics and Astronomy University of the Western Cape Cape Town7535 South Africa School of Earth and Space Exploration Arizona State University 781 E Terrace Mall TempeAZ85287 United States Harvard-Smithsonian Center for Astrophysics 60 Garden Street CambridgeMA02138 United States Aix Marseille Univ CNRS LAM Laboratoire d'Astrophysique de Marseille Marseille France Department of Astronomy and Radio Astronomy Laboratory University of California BerkeleyCA94720 United States Department of Physics and McGill Space Institute McGill University MontrealQCH3A 2T8 Canada Astrophysics and Cosmology Research Unit University of KwaZulu-Natal Durban4041 South Africa European Southern Observatory Karl-

Following the first two annual intensity mapping workshops at Stanford in March 2016 and Johns Hopkins in June 2017, we report on the recent advances in theory, instrumentation and observation that were presented in these meetings and some of the opportunities and challenges that were identified looking forward. With preliminary detections of CO, [CII], Lyα and low-redshift 21cm, and a host of experiments set to go online in the next few years, the field is rapidly progressing on all fronts, with great anticipation for a flood of new exciting results. This current snapshot provides an efficient reference for experts in related fields and a useful resource for nonspecialists. We begin by introducing the concept of line-intensity mapping and then discuss the broad array of science goals that will be enabled, ranging from the history of star formation, reionization and galaxy evolution to measuring baryon acoustic oscillations at high redshift and constraining theories of dark matter, modified gravity and dark energy. After reviewing the first detections reported to date, we survey the experimental landscape, presenting the parameters and capabilities of relevant instruments such as COMAP, mmIMe, AIM-CO, CCAT-p, TIME, CONCERTO, CHIME, HIRAX, HERA, STARFIRE, MeerKAT/SKA and SPHEREx. Finally, we describe recent theoretical advances: different approaches to modeling line luminosity functions, several techniques to separate the desired signal from foregrounds, statistical methods to analyze the data, and frameworks to generate realistic intensity map simulations. Copyright © 2017, The Authors. All rights reserved.

关键词： Acoustic intensity measurement

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Effect of inner-surface roughness of conical target on laser absorption and fast electron generation

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Chinese Physics B 2014年第5期23卷 392-396页

作者：王欢曹莉华赵宗清郁明阳谷渝秋贺贤土 Center for Applied Physics and Technology Peking University Key Laboratory of High Energy Density Physics Simulation of the Ministry of Education Peking University Institute of Applied Physics and Computational Mathematics Laser Fusion Research Center China Academy of Engineering Physics Institute for Fusion Theory and Simulation Zhejiang University Institute for Theoretical Physics I Ruhr University

The effect of inner-surface roughness of conical targets on the generation of fast electrons in the laser-cone interaction is investigated using particle-in-cell simulation. It is found that the surface roughness can reduce the fast-electron number （in the energy range E 〉 1 MeV） and energy, as compared to that from a cone with smooth inner wall. A scaling law for the laser reflectivity based on the vacuum-heating model is derived. Both theory and simulation indicate that laser reflection increases with the height-to-width ratio of the periodic inner surface structure and approaches that of a smooth cone as this ratio becomes zero.

关键词： inner-surface roughness of cone target particle-in-cell simulation vacuum-heating model laserreflection

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Kaon femtoscopy in Pb-Pb collisions at sNN=2.76 TeV

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Physical Review C 2017年第6期96卷 064613-064613页

作者： S. Acharya J. Adam D. Adamová J. Adolfsson M. M. Aggarwal G. Aglieri Rinella M. Agnello N. Agrawal Z. Ahammed N. Ahmad S. U. Ahn S. Aiola A. Akindinov S. N. Alam J. L. B. Alba D. S. D. Albuquerque D. Aleksandrov B. Alessandro R. Alfaro Molina A. Alici A. Alkin J. Alme T. Alt L. Altenkamper I. Altsybeev C. Alves Garcia Prado C. Andrei D. Andreou H. A. Andrews A. Andronic V. Anguelov C. Anson T. Antičić F. Antinori P. Antonioli R. Anwar L. Aphecetche H. Appelshäuser S. Arcelli R. Arnaldi O. W. Arnold I. C. Arsene M. Arslandok B. Audurier A. Augustinus R. Averbeck M. D. Azmi A. Badalà Y. W. Baek S. Bagnasco R. Bailhache R. Bala A. Baldisseri M. Ball R. C. Baral A. M. Barbano R. Barbera F. Barile L. Barioglio G. G. Barnaföldi L. S. Barnby V. Barret P. Bartalini K. Barth E. Bartsch M. Basile N. Bastid S. Basu G. Batigne B. Batyunya P. C. Batzing I. G. Bearden H. Beck C. Bedda N. K. Behera I. Belikov F. Bellini H. Bello Martinez R. Bellwied L. G. E. Beltran V. Belyaev G. Bencedi S. Beole A. Bercuci Y. Berdnikov D. Berenyi R. A. Bertens D. Berzano L. Betev A. Bhasin I. R. Bhat A. K. Bhati B. Bhattacharjee J. Bhom L. Bianchi N. Bianchi C. Bianchin J. Bielčík J. Bielčíková A. Bilandzic G. Biro R. Biswas S. Biswas J. T. Blair D. Blau C. Blume G. Boca F. Bock A. Bogdanov L. Boldizsár M. Bombara G. Bonomi M. Bonora J. Book H. Borel A. Borissov M. Borri E. Botta C. Bourjau L. Bratrud P. Braun-Munzinger M. Bregant T. A. Broker M. Broz E. J. Brucken E. Bruna G. E. Bruno D. Budnikov H. Buesching S. Bufalino P. Buhler P. Buncic O. Busch Z. Buthelezi J. B. Butt J. T. Buxton J. Cabala D. Caffarri H. Caines A. Caliva E. Calvo Villar P. Camerini A. A. Capon F. Carena W. Carena F. Carnesecchi J. Castillo Castellanos A. J. Castro E. A. R. Casula C. Ceballos Sanchez P. Cerello S. Chandra B. Chang S. Chapeland M. Chartier S. Chattopadhyay A. Chauvin M. Cherney C. Cheshkov B. Cheynis V. Chibante Barroso D. D. Chinellato S. Cho P. Chochula M. Chojnacki S. Choudhury T. Chowdhury P. Christakoglou C. H. Christensen P. Christiansen T. Chujo S. Variable Energy Cyclotron Centre Kolkata India Physics Department Creighton University Omaha Nebraska United States Nuclear Physics Institute Academy of Sciences of the Czech Republic Řež u Prahy Czech Republic Division of Experimental High Energy Physics University of Lund Lund Sweden Physics Department Panjab University Chandigarh India European Organization for Nuclear Research (CERN) Geneva Switzerland Dipartimento DISAT del Politecnico and Sezione INFN Turin Italy Indian Institute of Technology Bombay (IIT) Mumbai India Department of Physics Aligarh Muslim University Aligarh India Korea Institute of Science and Technology Information Daejeon Republic of Korea Yale University New Haven Connecticut United States Institute for Theoretical and Experimental Physics Moscow Russia Sección Física Departamento de Ciencias Pontificia Universidad Católica del Perú Lima Peru Universidade Estadual de Campinas (UNICAMP) Campinas Brazil National Research Centre Kurchatov Institute Moscow Russia INFN Sezione di Torino Turin Italy Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico INFN Sezione di Bologna Bologna Italy Dipartimento di Fisica e Astronomia dell'Università and Sezione INFN Bologna Italy Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi' Rome Italy Bogolyubov Institute for Theoretical Physics Kiev Ukraine Department of Physics and Technology University of Bergen Bergen Norway Institut für Kernphysik Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany V. Fock Institute for Physics St. Petersburg State University St. Petersburg Russia Universidade de São Paulo (USP) São Paulo Brazil National Institute for Physics and Nuclear Engineering Bucharest Romania School of Physics and Astronomy University of Birmingham Birmingham United Kingdom Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung GmbH Darmstadt Germany Physikalisches Inst

We present the results of three-dimensional femtoscopic analyses for charged and neutral kaons recorded by ALICE in Pb-Pb collisions at sNN=2.76 TeV. Femtoscopy is used to measure the space-time characteristics of particle production from the effects of quantum statistics and final-state interactions in two-particle correlations. Kaon femtoscopy is an important supplement to that of pions because it allows one to distinguish between different model scenarios working equally well for pions. In particular, we compare the measured three-dimensional kaon radii with a purely hydrodynamical calculation and a model where the hydrodynamic phase is followed by a hadronic rescattering stage. The former predicts an approximate transverse mass (mT) scaling of source radii obtained from pion and kaon correlations. This mT scaling appears to be broken in our data, which indicates the importance of the hadronic rescattering phase at LHC energies. A kT scaling of pion and kaon source radii is observed instead. The time of maximal emission of the system is estimated by using the three-dimensional femtoscopic analysis for kaons. The measured emission time is larger than that of pions. Our observation is well supported by the hydrokinetic model predictions.

关键词： Nuclear reactions Particle correlations & fluctuations Relativistic heavy-ion collisions

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Evolution of the longitudinal and azimuthal structure of the near-side jet peak in Pb-Pb collisions at sNN=2.76 TeV

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Physical Review C 2017年第3期96卷 034904-034904页

作者： J. Adam D. Adamová M. M. Aggarwal G. Aglieri Rinella M. Agnello N. Agrawal Z. Ahammed S. Ahmad S. U. Ahn S. Aiola A. Akindinov S. N. Alam D. S. D. Albuquerque D. Aleksandrov B. Alessandro D. Alexandre R. Alfaro Molina A. Alici A. Alkin J. Alme T. Alt S. Altinpinar I. Altsybeev C. Alves Garcia Prado M. An C. Andrei H. A. Andrews A. Andronic V. Anguelov C. Anson T. Antičić F. Antinori P. Antonioli R. Anwar L. Aphecetche H. Appelshäuser S. Arcelli R. Arnaldi O. W. Arnold I. C. Arsene M. Arslandok B. Audurier A. Augustinus R. Averbeck M. D. Azmi A. Badalà Y. W. Baek S. Bagnasco R. Bailhache R. Bala S. Balasubramanian A. Baldisseri R. C. Baral A. M. Barbano R. Barbera F. Barile G. G. Barnaföldi L. S. Barnby V. Barret P. Bartalini K. Barth J. Bartke E. Bartsch M. Basile N. Bastid S. Basu B. Bathen G. Batigne A. Batista Camejo B. Batyunya P. C. Batzing I. G. Bearden H. Beck C. Bedda N. K. Behera I. Belikov F. Bellini H. Bello Martinez R. Bellwied L. G. E. Beltran V. Belyaev G. Bencedi S. Beole A. Bercuci Y. Berdnikov D. Berenyi R. A. Bertens D. Berzano L. Betev A. Bhasin I. R. Bhat A. K. Bhati B. Bhattacharjee J. Bhom L. Bianchi N. Bianchi C. Bianchin J. Bielčík J. Bielčíková A. Bilandzic G. Biro R. Biswas S. Biswas S. Bjelogrlic J. T. Blair D. Blau C. Blume F. Bock A. Bogdanov L. Boldizsár M. Bombara M. Bonora J. Book H. Borel A. Borissov M. Borri E. Botta C. Bourjau P. Braun-Munzinger M. Bregant T. A. Broker T. A. Browning M. Broz E. J. Brucken E. Bruna G. E. Bruno D. Budnikov H. Buesching S. Bufalino P. Buhler S. A. I. Buitron P. Buncic O. Busch Z. Buthelezi J. B. Butt J. T. Buxton J. Cabala D. Caffarri H. Caines A. Caliva E. Calvo Villar P. Camerini F. Carena W. Carena F. Carnesecchi J. Castillo Castellanos A. J. Castro E. A. R. Casula C. Ceballos Sanchez J. Cepila P. Cerello J. Cerkala B. Chang S. Chapeland M. Chartier J. L. Charvet S. Chattopadhyay A. Chauvin V. Chelnokov M. Cherney C. Cheshkov B. Cheynis V. Chibante Barroso D. D. Chinellato S. Cho P. Chochula K. Choi M. Chojnacki S. Choudhury P. Christakoglou C. Faculty of Nuclear Sciences and Physical Engineering Czech Technical University in Prague Prague Czech Republic Nuclear Physics Institute Academy of Sciences of the Czech Republic Řež u Prahy Czech Republic Physics Department Panjab University Chandigarh India European Organization for Nuclear Research (CERN) Geneva Switzerland Sezione INFN Turin Italy Dipartimento DISAT del Politecnico and Sezione INFN Turin Italy Indian Institute of Technology Bombay (IIT) Mumbai India Variable Energy Cyclotron Centre Kolkata India Department of Physics Aligarh Muslim University Aligarh India Korea Institute of Science and Technology Information Daejeon South Korea Yale University New Haven Connecticut 06520 USA Institute for Theoretical and Experimental Physics Moscow Russia Universidade Estadual de Campinas (UNICAMP) Campinas Brazil National Research Centre Kurchatov Institute Moscow Russia School of Physics and Astronomy University of Birmingham Birmingham United Kingdom Instituto de Física Universidad Nacional Autónoma de México Mexico City Mexico Sezione INFN Bologna Italy Centro Fermi-Museo Storico della Fisica e Centro Studi e Ricerche “Enrico Fermi ” Rome Italy Bogolyubov Institute for Theoretical Physics Kiev Ukraine Department of Physics and Technology University of Bergen Bergen Norway Faculty of Engineering Bergen University College Bergen Norway Frankfurt Institute for Advanced Studies Johann Wolfgang Goethe-Universität Frankfurt Frankfurt Germany V. Fock Institute for Physics St. Petersburg State University St. Petersburg Russia Universidade de São Paulo (USP) São Paulo Brazil Central China Normal University Wuhan China National Institute for Physics and Nuclear Engineering Bucharest Romania Research Division and ExtreMe Matter Institute EMMI GSI Helmholtzzentrum für Schwerionenforschung Darmstadt Germany Physikalisches Institut Ruprecht-Karls-Universität Heidelberg Heidelberg Germany Physics Department Creighton University Omaha Nebraska 68102

In two-particle angular correlation measurements, jets give rise to a near-side peak, formed by particles associated to a higher-pT trigger particle. Measurements of these correlations as a function of pseudorapidity (Δη) and azimuthal (Δφ) differences are used to extract the centrality and pT dependence of the shape of the near-side peak in the pT range 1applied to the data and the peak shape is quantified by the variance of the distributions. While the width of the peak in the Δφ direction is almost independent of centrality, a significant broadening in the Δη direction is found from peripheral to central collisions. This feature is prominent for the low-pT region and vanishes above 4 GeV/c. The widths measured in peripheral collisions are equal to those in pp collisions in the Δφ direction and above 3 GeV/c in the Δη direction. Furthermore, for the 10% most central collisions and 1

关键词： Jets & heavy flavor physics Nucleon-nucleon interactions Particle correlations & fluctuations Relativistic heavy-ion collisions

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Hysteresis and metastability of Bose-Einstein-condensed clouds of atoms confined in ring potentials

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Physical Review A 2015年第2期91卷 023613-023613页

作者： A. Roussou G. D. Tsibidis J. Smyrnakis M. Magiropoulos Nikolaos K. Efremidis A. D. Jackson G. M. Kavoulakis Department of Applied Mathematics University of Crete GR-71004 Heraklion Greece Institute of Electronic Structure and Laser (IESL) Foundation for Research and Technology (FORTH) N. Plastira 100 Vassilika Vouton 70013 Heraklion Crete Greece Technological Education Institute of Crete P.O. Box 1939 GR-71004 Heraklion Greece The Niels Bohr Institute and Niels Bohr International Academy Blegdamsvej 17 Copenhagen Ø Denmark

We consider a Bose-Einstein-condensed cloud of atoms which rotate in a toroidal or annular potential. Assuming one-dimensional motion, we evaluate the critical frequencies associated with the effect of hysteresis and the critical coupling for stability of the persistent currents. We perform these calculations using both the mean-field approximation and the method of numerical diagonalization of the many-body Hamiltonian which includes corrections due to the finiteness of the atom number.

关键词： HYSTERESIS BOSE-Einstein condensation MEAN field theory HAMILTONIAN mechanics WAVE functions SUPERFLUIDITY

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Production of Σ(1133885)± and Ξ(1530)0 in p–Pb collisions at √sNN = 5.02 TeV

arXiv

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arXiv 2017年

作者： Adamová, D. Aggarwal, M.M. Aglieri Rinella, G. Agnello, M. Agrawal, N. Ahammed, Z. Ahmad, S. Ahn, S.U. Aiola, S. Akindinov, A. Alam, S.N. Albuquerque, D.S.D. Aleksandrov, D. Alessandro, B. Alexandre, D. Alfaro Molina, R. Alici, A. Alkin, A. Alme, J. Alt, T. Altinpinar, S. Altsybeev, I. Alves Garcia Prado, C. An, M. Andrei, C. Andrews, H.A. Andronic, A. Anguelov, V. Anson, C. Antičić, T. Antinori, F. Antonioli, P. Anwar, R. Aphecetche, L. Appelshäuser, H. Arcelli, S. Arnaldi, R. Arnold, O.W. Arsene, I.C. Arslandok, M. Audurier, B. Augustinus, A. Averbeck, R. Azmi, M.D. Badalà, A. Baek, Y.W. Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. Ball, M. Baral, R.C. Barbano, A.M. Barbera, R. Barile, F. Barioglio, L. Barnaföldi, G.G. Barnby, L.S. Barret, V. Bartalini, P. Barth, K. Bartke, J. Bartsch, E. Basile, M. Bastid, N. Basu, S. Bathen, B. Batigne, G. Batista Camejo, A. Batyunya, B. Batzing, P.C. Bearden, I.G. Beck, H. Bedda, C. Behera, N.K. Belikov, I. Bellini, F. Bello Martinez, H. Bellwied, R. Beltran, L.G.E. Belyaev, V. Bencedi, G. Beole, S. Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R.A. Berzano, D. Betev, L. Bhasin, A. Bhat, I.R. Bhati, A.K. Bhattacharjee, B. Bhom, J. Bianchi, L. Bianchi, N. Bianchin, C. Bielčík, J. Bielčíková, J. Bilandzic, A. Biro, G. Biswas, R. Biswas, S. Blair, J.T. Blau, D. Blume, C. Boca, G. Bock, F. Bogdanov, A. Boldizsár, L. Bombara, M. Bonomi, G. Bonora, M. Book, J. Borel, H. Borissov, A. Borri, M. Botta, E. Bourjau, C. Braun-Munzinger, P. Bregant, M. Broker, T.A. Browning, T.A. Broz, M. Brucken, E.J. Bruna, E. Bruno, G.E. Budnikov, D. Buesching, H. Bufalino, S. Buhler, P. Buitron, S.A.I. Buncic, P. Busch, O. Buthelezi, Z. Butt, J.B. Buxton, J.T. Cabala, J. Caffarri, D. Caines, H. Caliva, A. Calvo Villar, E. Camerini, P. Capon, A.A. Carena, F. Carena, W. Carnesecchi, F. Castillo Castellanos, J. Castro, A.J. Casula, E.A.R. Ceballos Sanchez, C. Cerello, P. Chang, B. Deceased Georgia State University AtlantaGA United States Department of Applied Physics Aligarh Muslim University Aligarh India M.V. Lomonosov Moscow State University D.V. Skobeltsyn Institute of Nuclear Physics Moscow Russia Foundation Yerevan Armenia Benemérita Universidad Autónoma de Puebla Puebla Mexico Bogolyubov Institute for Theoretical Physics Kiev Ukraine Kolkata India Budker Institute for Nuclear Physics Novosibirsk Russia California Polytechnic State University San Luis ObispoCA United States Central China Normal University Wuhan China Centre de Calcul de l’IN2P3 Villeurbanne Lyon France Havana Cuba Madrid Spain Mexico City and Mérida Mexico Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi’ Rome Italy Chicago State University ChicagoIL United States China Institute of Atomic Energy Beijing China Islamabad Pakistan Departamento de Física de Partículas IGFAE Universidad de Santiago de Compostela Santiago de Compostela Spain Department of Physics Aligarh Muslim University Aligarh India Department of Physics Ohio State University ColumbusOH United States Department of Physics Sejong University Seoul Korea Republic of Department of Physics University of Oslo Oslo Norway Department of Physics and Technology University of Bergen Bergen Norway Dipartimento di Fisica dell’Università’La Sapienza’ and Sezione INFN Rome Italy Dipartimento di Fisica dell’Università Sezione INFN Cagliari Italy Dipartimento di Fisica dell’Università Sezione INFN Trieste Italy Dipartimento di Fisica dell’Università and Sezione INFN Turin Italy Dipartimento di Fisica e Astronomia dell’Università Sezione INFN Bologna Italy Dipartimento di Fisica e Astronomia dell’Università Sezione INFN Catania Italy Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Padova Italy Dipartimento di Fisica ‘E.R. Caianiello’ dell’Università Gruppo Collegato INFN Salerno Italy Dipartimento DISAT del Politecnico and Se

The transverse momentum distributions of the strange and double-strange hyperon resonances (Σ(1385)±, Ξ(1530)0) produced in p–Pb collisions at √sNN = 5.02 TeV were measured in the rapidity range −0.5 CMS ch/dηlabi. The mean transverse momentum values are presented as a function of hdNch/dηlabi, as well as a function of the particle masses and compared with previous results on hyperon production. The integrated yield ratios of excited to ground-state hyperons are constant as a function of hdNch/dηlabi. The equivalent ratios to pions exhibit an increase with hdNch/dηlabi, depending on their strangeness content. Copyright © 2017, The Authors. All rights reserved.

关键词： Ground state

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On a posteriori error control for the Allen-Cahn problem

On a posteriori error control for the Allen-Cahn problem

引用

作者： Georgoulis, Emmanuil H. Makridakis, Charalambos Department of Mathematics University of Leicester University Road Leicester LE1 7RH United Kingdom Department of Applied Mathematics University of Crete GR-71409 Heraklion Greece Institute for Applied and Computational Mathematics Foundation for Research and Technology-Hellas Vasilika Vouton P.O. Box 1527 GR-71110 Heraklion Greece

We derive a posteriori bounds in non-Hilbertian norms for finite element approximations to the Allen-Cahn phase field model. The derivation of the bounds relies crucially on an approximate spectral estimate for the linearised steady part of the partial differential equation, yielding only polynomial dependence on the phase separation length. A second key ingredient in the proof of the a posteriori bounds is the use of the elliptic reconstruction framework, enabling the control of the error in the L∞(Lr)-norms, r âˆˆ [2, ∞ ]. For simplicity of the presentation, only the spatially discrete method is considered here. © 2013 John Wiley & Sons, Ltd.

关键词： Phase separation

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Constraints on jet quenching in p–Pb collisions at √sNN = 5.02 TeV measured by the event-activity dependence of semi-inclusive hadron-jet distributions

arXiv

引用

arXiv 2017年

作者： Acharya, S. Adamová, D. Adolfsson, J. Aggarwal, M.M. Rinella, G. Aglieri Agnello, M. Agrawal, N. Ahammed, Z. Ahn, S.U. Aiola, S. Akindinov, A. Al-Turany, M. Alam, S.N. Albuquerque, D.S.D. Aleksandrov, D. Alessandro, B. Molina, R. Alfaro Ali, Y. Alici, A. Alkin, A. Alme, J. Alt, T. Altenkamper, L. Altsybeev, I. Andrei, C. Andreou, D. Andrews, H.A. Andronic, A. Angeletti, M. Anguelov, V. Anson, C. Antičić, T. Antinori, F. Antonioli, P. Apadula, N. Aphecetche, L. Appelshäuser, H. Arcelli, S. Arnaldi, R. Arnold, O.W. Arsene, I.C. Arslandok, M. Audurier, B. Augustinus, A. Averbeck, R. Azmi, M.D. Badalà, A. Baek, Y.W. Bagnasco, S. Bailhache, R. Bala, R. Baldisseri, A. Ball, M. Baral, R.C. Barbano, A.M. Barbera, R. Barile, F. Barioglio, L. Barnaföldi, G.G. Barnby, L.S. Barret, V. Bartalini, P. Barth, K. Bartsch, E. Bastid, N. Basu, S. Batigne, G. Batyunya, B. Batzing, P.C. Alba, J.L. Bazo Bearden, I.G. Beck, H. Bedda, C. Behera, N.K. Belikov, I. Bellini, F. Martinez, H. Bello Bellwied, R. Beltran, L.G.E. Belyaev, V. Bencedi, G. Beole, S. Bercuci, A. Berdnikov, Y. Berenyi, D. Bertens, R.A. Berzano, D. Betev, L. Bhaduri, P.P. Bhasin, A. Bhat, I.R. Bhattacharjee, B. Bhom, J. Bianchi, A. Bianchi, L. Bianchi, N. Bianchin, C. Bielčík, J. Bielčíková, J. Bilandzic, A. Biro, G. Biswas, R. Biswas, S. Blair, J.T. Blau, D. Blume, C. Boca, G. Bock, F. Bogdanov, A. Boldizsár, L. Bombara, M. Bonomi, G. Bonora, M. Borel, H. Borissov, A. Borri, M. Botta, E. Bourjau, C. Bratrud, L. Braun-Munzinger, P. Bregant, M. Broker, T.A. Broz, M. Brucken, E.J. Bruna, E. Bruno, G.E. Budnikov, D. Buesching, H. Bufalino, S. Buhler, P. Buncic, P. Busch, O. Buthelezi, Z. Butt, J.B. Buxton, J.T. Cabala, J. Caffarri, D. Caines, H. Caliva, A. Villar, E. Calvo Camacho, R.S. Camerini, P. Capon, A.A. Carena, F. Carena, W. Carnesecchi, F. Castellanos, J. Castillo Castro, A.J. Casula, E.A.R. Sanchez, C. Ceballos Chandra, S. Chang, B. Chang, W. Deceased Dipartimento DET del Politecnico di Torino Turin Italy M.V. Lomonosov Moscow State University D.V. Skobeltsyn Institute of Nuclear Physics Moscow Russia Department of Applied Physics Aligarh Muslim University Aligarh India Institute of Theoretical Physics University of Wroclaw Poland Foundation Yerevan Armenia Benemérita Universidad Autónoma de Puebla Puebla Mexico Bogolyubov Institute for Theoretical Physics Kiev Ukraine Kolkata India Budker Institute for Nuclear Physics Novosibirsk Russia California Polytechnic State University San Luis ObispoCA United States Central China Normal University Wuhan China Centre de Calcul de l’IN2P3 Villeurbanne Lyon France Havana Cuba Mexico City and Mérida Mexico Centro Fermi - Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi’ Rome Italy Chicago State University ChicagoIL United States China Institute of Atomic Energy Beijing China Chonbuk National University Jeonju Korea Republic of Islamabad Pakistan Department of Physics Aligarh Muslim University Aligarh India Department of Physics Ohio State University ColumbusOH United States Department of Physics Pusan National University Pusan Korea Republic of Department of Physics Sejong University Seoul Korea Republic of Department of Physics University of Oslo Oslo Norway Department of Physics and Technology University of Bergen Bergen Norway Dipartimento di Fisica dell’Università’La Sapienza’ and Sezione INFN Rome Italy Dipartimento di Fisica dell’Università Sezione INFN Cagliari Italy Dipartimento di Fisica dell’Università Sezione INFN Trieste Italy Dipartimento di Fisica dell’Università and Sezione INFN Turin Italy Dipartimento di Fisica e Astronomia dell’Università Sezione INFN Bologna Italy Dipartimento di Fisica e Astronomia dell’Università Sezione INFN Catania Italy Dipartimento di Fisica e Astronomia dell’Università and Sezione INFN Padova Italy Dipartimento di Fisica ‘E.R. Caianiello’ dell’Università Gruppo Co

The ALICE Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high-transverse momentum trigger hadron in p–Pb collisions at √sNN = 5.02 TeV. Jets are reconstructed from charged-particle tracks using the anti-kT algorithm with resolution parameter R = 0.2 and 0.4. A data-driven statistical approach is used to correct the uncorrelated background jet yield. Recoil jet distributions are reported for jet transverse momentum 15 chT,jet chT,jet Copyright © 2017, The Authors. All rights reserved.

关键词： Quenching

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