检索结果-内蒙古大学图书馆

arXiv 2017年

作者： Donley, J.L. Kartaltepe, J. Kocevski, D. Salvato, M. Santini, P. Suh, H. Civano, F. Koekemoer, A.M. Trump, J. Brusa, M. Cardamone, C. Castro, A. Cisternas, M. Conselice, C. Croton, D. Hathi, N. Liu, C. Lucas, R.A. Nair, P. Rosario, D. Sanders, D. Simmons, B. Villforth, C. Alexander, D.M. Bell, E.F. Faber, S.M. Grogin, N.A. Lotz, J. McIntosh, D.H. Nagao, T. Los Alamos National Laboratory P.O. Box 1663 Los AlamosNM87545 United States Rochester Institute of Technology RochesterNY United States Colby College WatervilleME04901 United States Max Planck Institut für extraterrestrische Physik Giessenbachstrasse 1 Garching bei MünchenD-85748 Germany INAF-Osservatorio Astronomico di Roma via di Frascati 33 Monte Porzio Catone RomaI-00040 Italy Subaru Telescope National Astronomical Observatory of Japan 650 A’ohoku place HiloHI96720 United States Harvard-Smithsonian Center for Astrophysics 60 Garden Street CambridgeMA02138 United States Space Telescope Science Institute 3700 San Martin Drive BaltimoreMD21218 United States University of Connecticut 2152 Hillside Road U-3046 StorrsCT06269 United States INAF-Osservatorio Astronomico di Bologna via Ranzani 1 BolognaI-40127 Italy Department of Math & Science Wheelock College 200 Riverway BostonMA02215 United States Instituto de Astronomía Observatorio Astronómico Nacional. A.P. 877 EnsenadaBC22800 Mexico Universidad Autónoma de Ciudad Juárez Instituto de Ingeniería y Tecnología 1210 Plutarco Elias Calles Cd. Juarez CH32310 Mexico Instituto de Astrofisica de Canarias E-38205 La Laguna Tenerife Spain School of Physics & Astronomy University of Nottingham NottinghamNG7 2RD United Kingdom Centre for Astrophysics & Supercomputing Swinburne University of Technology P.O. Box 218 HawthornVIC3122 Australia UMR 7326 Marseille13388 France Astrophysical Observatory Department of Engineering Science and Physics City University of New York College of Staten Island 2800 Victory Boulevard Staten IslandNY10314 United States Department of Astrophysics and Hayden Planetarium American Museum of Natural History New YorkNY10024 United States Physics Program Graduate Center CUNY New YorkNY10016 United States Department of Physics and Astronomy University of Alabama Box 870324 TuscaloosaAL35487-0324 United States Institute for Astronomy Universit

While major mergers have long been proposed as a driver of both AGN activity and the MBH − σbulge relation, studies of moderate to high redshift Seyfert-luminosity AGN hosts have found little evidence for enhanced rates of interactions. However, both theory and observation suggest that while these AGN may be fueled by stochastic accretion and secular processes, high-luminosity, high-redshift, and heavily obscured AGN are the AGN most likely to be merger-driven. To better sample this population of AGN, we turn to infrared selection in the CANDELS/COSMOS field. Compared to their lower-luminosity and less obscured X-ray–only counterparts, IR-only AGN (luminous, heavily obscured AGN) are more likely to be classified as either irregular (Formula presented) or asymmetric (Formula presented) and are less likely to have a spheroidal component (Formula presented). Furthermore, IR-only AGN are also significantly more likely than X-ray–only AGN (75+−813% vs. 31+−66%) to be classified either as interacting or merging in a way that significantly disturbs the host galaxy or disturbed though not clearly interacting or merging, which potentially represents the late stages of a major merger. This suggests that while major mergers may not contribute significantly to the fueling of Seyfert luminosity AGN, interactions appear to play a more dominant role in the triggering and fueling of high-luminosity heavily obscured AGN. Copyright © 2017, The Authors. All rights reserved.

关键词： Merging

来源：评论

学校读者我要写书评

暂无评论

OISTER Optical and Near-Infrared Monitoring Observations of a Peculiar Radio-Loud Active Galactic Nucleus SDSS J110006.07+442144.3

arXiv

引用

arXiv 2017年

作者： Morokuma, Tomoki Tanaka, Masaomi Tanaka, Yasuyuki T. Itoh, Ryosuke Tominaga, Nozomu Gandhi, Poshak Pian, Elena Mazzali, Paolo Ohta, Kouji Matsumoto, Emiko Shibata, Takumi Akimoto, Hinako Akitaya, Hiroshi Ali, Gamal B. Aoki, Tsutomu Mamoru, D.O.I. Ebisuda, Nana Essam, Ahmed Fujisawa, Kenta Fukushima, Hideo Goda, Shuhei Gouda, Yuya Hanayama, Hidekazu Hashiba, Yasuhito Hashimoto, Osamu Hayashida, Kenzo Hiratsuka, Yuichiro Honda, Satoshi Imai, Masataka Inoue, Kanichiro Ishibashi, Michiko Iwata, Ikuru Izumiura, Hideyuki Kanda, Yuka Kawabata, Miho Kawaguchi, Kenji Kawai, Nobuyuki Kokubo, Mitsuru Kuroda, Daisuke Maehara, Hiroyuki Mito, Hiroyuki Mitsuda, Kazuma Miyagawa, Ryota Miyaji, Takeshi Miyamoto, Yusuke Morihana, Kumiko Moritani, Yuki Morokuma-Matsui, Kana Murakami, Kotone Murata, Katsuhiro L. Nagayama, Takahiro Nakamura, Kazuki Nakaoka, Tatsuya Niinuma, Kotaro Nishimori, Takafumi Nogami, Daisaku Oasa, Yumiko Oda, Tatsunori Ohshima, Tomohito Saito, Yoshihiko Sakata, Shuichiro Sako, Shigeyuki Sarugaku, Yuki Sawada-Satoh, Satoko Seino, Genta Sorai, Kazuo Soyano, Takao Taddia, Francesco Takahashi, Jun Takagi, Yuhei Takaki, Katsutoshi Takata, Koji Tarusawa, Kenichi Uemura, Makoto Ui, Takahiro Urago, Riku Ushioda, Kazutoshi Jun-ichi, Watanabe Watanabe, Makoto Yamashita, Satoshi Yanagisawa, Kenshi Yonekura, Yoshinori Yoshida, Michitoshi Institute of Astronomy Graduate School of Science University of Tokyo 2-21-1 Osawa Mitaka Tokyo181-0015 Japan National Astronomical Observatory of Japan National Institutes of Natural Sciences 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Hiroshima Astrophysical Science Center Hiroshima University Higashi-HiroshimaHiroshima739-8526 Japan Department of Physics Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo152-8551 Japan Department of Physical Science Hiroshima University Kagamiyama 1-3-1 Higashi-Hiroshima739-8526 Japan Department of Physics Faculty of Science and Engineering Konan University 8-9-1 Okamoto Kobe Hyogo658-8501 Japan University of Tokyo 5-1-5 Kashiwanoha Kashiwa Chiba277-8583 Japan Department of Physics and Astronomy University of Southampton Highfield SouthamptonSO17 1BJ United Kingdom Institute of Space Astrophysics and Cosmic Physics via P. Gobetti 101 BolognaI-40129 Italy Scuola Normale Superiore Piazza dei Cavalieri 7 PisaI-56126 Italy Astrophysics Research Institute Liverpool John Moores University IC2 Liverpool Science Park 146 Brownlow Hill LiverpoolL3 5RF United Kingdom Max-Planck-Institut fr Astrophysik Karl-Schwarzschild-Str. 1 GarchingD-85748 Germany Department of Astronomy Graduate School of Science Kyoto University Sakyo-ku Kyoto606-8502 Japan Nishi-Harima Astronomical Observatory Center for Astronomy University of Hyogo 407-2 Nishigaichi SayoHyogo679-5313 Japan Center for Astronomy Ibaraki University 2-1-1 Bunkyo MitoIbaraki310-8512 Japan National Research Institute of Astronomy and Geophysics 11421 Helwn Cairo Egypt Kiso Observatory Institute of Astronomy School of Science University of Tokyo 10762-30 Mitake Kiso-machi Kiso-gun Nagano397-0101 Japan Research Center for the Early Universe Graduate School of Science University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-0033 Japan The Research Institute of Time Studies Yamaguchi University 1677-1 Yoshida YamaguchiYamaguchi

We present monitoring campaign observations at optical and near-infrared (NIR) wavelengths for a radio-loud active galactic nucleus (AGN) at z = 0.840, SDSS J110006.07+442144.3 (hereafter, J1100+4421), which was identified during a flare phase in late February, 2014. The campaigns consist of three intensive observing runs from the discovery to March, 2015, mostly within the scheme of the OISTER collaboration. Optical-NIR light curves and simultaneous spectral energy distributions (SEDs) are obtained. Our measurements show the strongest brightening in March, 2015. We found that the optical-NIR SEDs of J1100+4421 show an almost steady shape despite the large and rapid intranight variability. This constant SED shape is confirmed to extend to ∼ 5 µm in the observed frame using the archival WISE data. Given the lack of absorption lines and the steep power-law spectrum of αν ∼ −1.4, where fν ∝ ναν , synchrotron radiation by a relativistic jet with no or small contributions from the host galaxy and the accretion disk seems most plausible as an optical-NIR emission mechanism. The steep optical-NIR spectral shape and the large amplitude of variability are consistent with this object being a low νpeak jet-dominated AGN. In addition, sub-arcsec resolution optical imaging data taken with Subaru Hyper Suprime-Cam does not show a clear extended component and the spatial scales are significantly smaller than the large extensions detected at radio wavelengths. The optical spectrum of a possible faint companion galaxy does not show any emission lines at the same redshift and hence a merging hypothesis for this AGN-related activity is not supported by our observations. Copyright © 2017, The Authors. All rights reserved.

关键词： Galaxies

来源：评论

学校读者我要写书评

暂无评论

In vivo evaluation of strontium-containing nanostructured carbonated hydroxyapatite 27th

In vivo evaluation of strontium-containing nanostructured ca...

引用

27th Symposium and Annual Meeting of the International Society for Ceramics in Medicine, 2015

作者： Kammer, Gabriel Maia Sartoretto, Suelen Cristina Resende, Rodrigo Uzeda, Marcelo Nascimento, Jhonathan Raphael Alves, Adriana Terezinha Calasans-Maia, José Rossi, Alexandre Granjeiro, José Mauro Calasans-Maia, Mônica Diuana Graduate Program in Dentistry Fluminense Federal University Rua Mario Santos Braga Niterói Rio de Janeiro Brazil Orthodontics Department Dentistry School Fluminense Federal University Rua Dr. Sylvio Henrique Browne Nova Friburgo Rio de Janeiro Brazil Applied Physics Department LABIOMAT Brazilian Center for Physics Research Rua Xavier Sigaud Rio de Janeiro Rio de Janeiro150 Brazil Division of Bioengineering National Institute of Metrology Quality and Technology Duque de Caxias Rio de Janeiro Brazil Department of Oral Surgery Dentistry School Fluminense Federal University Rua Mario Santos Braga 28 Niteroi Rio de Janeiro Brazil

ISBN: (纸本)9783035710403

Bone tissue is a composite material that has hydroxyapatite (HA) as its main inorganic phase component. The biological apatites have low crystallinity and contain cationic and anionic substitutions in their structure, which differ from the available synthetic ceramics. The purpose of this study is to evaluate the biocompatibility of nanostructured carbonated hydroxyapatite microspheres containing 5 wt% strontium (SrcHA) compared with the biocompatibility of carbonated hydroxyapatite (cHA), both synthesized at 37°C and non-sintered, used to control stoichiometric HA microspheres in subcutaneous tissue of mice. The biomaterials (BM) were characterized using X-ray Diffraction (XRD), Vibrational Spectroscopy in an Infrared Fourier Transform (VSIRFT) and Scanning Electron Microscopy (SEM). Forty five balb-C mice were randomly divided into four groups of 15 animals each: SrcHA, cHA, HA, and without material implantation (Sham group). All samples were histologically processed for descriptive evaluation of the biological effect. At each experimental period (1, 3 and 9 weeks), there was a higher biosorption of the tested biomaterials observed in contrast with the HA. The cHA group was the only group completely phagocytosed by macrophages and giant cells after 9 weeks. All biomaterials proved to be biocompatible, and the cHA and SrcHA 3% groups exhibited a faster bioabsorption in comparison with the control group. The doping of strontium did not cause a greater biological response after the 3 experimental periods. © 2016 Trans Tech Publications, Switzerland.

关键词： Hydroxyapatite

来源：评论

学校读者我要写书评

暂无评论

Forest unbiased galactic plane imaging survey with the nobeyama 45-m telescope (fugin) I: Project overview and initial results

arXiv

引用

arXiv 2017年

作者： Umemoto, Tomofumi Minamidani, Tetsuhiro Kuno, Nario Fujita, Shinji Matsuo, Mitsuhiro Nishimura, Atsushi Torii, Kazufumi Tosaki, Tomoka Kohno, Mikito Kuriki, Mika Tsuda, Yuya Hirota, Akihiko Ohashi, Satoshi Yamagishi, Mitsuyoshi Handa, Toshihiro Nakanishi, Hiroyuki Omodaka, Toshihiro Koide, Nagito Matsumoto, Naoko Onishi, Toshikazu Tokuda, Kazuki Seta, Masumichi Kobayashi, Yukinori Tachihara, Kengo Sano, Hidetoshi Hattori, Yusuke Onodera, Sachiko Oasa, Yumiko Kamegai, Kazuhisa Tsuboi, Masato Sofue, Yoshiaki Higuchi, Aya E. Chibueze, James O. Mizuno, Norikazu Honma, Mareki Muller, Erik Inoue, Tsuyoshi Morokuma-Matsui, Kana Shinnaga, Hiroko Ozawa, Takeaki Takahashi, Ryo Yoshiike, Satoshi Costes, Jean Kuwahara, Sho 462-2 Nobeyama Minamimaki Minamisaku Nagano384-1305 Japan 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Department of Physics Graduate School of Pure and Applied Sciences University of Tsukuba 1-1-1 Ten-nodai Tsukuba Ibaraki305-8577 Japan University of Tsukuba Tsukuba Ibaraki305-8571 Japan Graduate Schools of Science and Engineering Kagoshima University 1-21-35 Korimoto Kagoshima Kagoshima890-0065 Japan Department of Astrophysics Nagoya University Furo-cho Chikusa-ku Nagoya Aichi464-8602 Japan Department of Geoscience Joetsu University of Education Joetsu Niigata943-8512 Japan Meisei University 2-1-1 Hodokubo HinoTokyo191-0042 Japan 2-21-1 Osawa Mitaka Tokyo181-8588 Japan Department of Astronomy University of Tokyo Bunkyo-ku Tokyo113-0033 Japan Institute of Space and Astronautical Science Japan Aerospace Exploration Agency Chuo-ku Sagamihara252- 5210 Japan SKA Organization Jodrell Bank Observatory Lower Withington Macclesfield CheshireSK11 9DL United Kingdom Research Institute for Time Studies Yamaguchi University 1677-1 Yoshida YamaguchiYamaguchi753-8511 Japan Department of Physical Science Graduate School of Science Osaka Prefecture University 1-1 Gakuen-cho Naka-ku Sakai Osaka599-8531 Japan Department of Physics School of Science and Technology Kwansei Gakuin University 2-1 Gakuen SandaHyogo669-1337 Japan Faculty of Education Saitama University 255 Shimo-Okubo Sakura SaitamaSaitama388-8570 Japan Wako Saitama351-0198 Japan Department of Physics and Astronomy Faculty of Physical Sciences University of Nigeria Carver Building 1 University Road Nsukka Nigeria

The FOREST Unbiased Galactic plane Imaging survey with the Nobeyama 45-m telescope (FUGIN) project is one of the legacy projects using the new multi-beam FOREST receiver installed on the Nobeyama 45-m telescope. This project aims to investigate the distribution, kinematics, and physical properties of both diffuse and dense molecular gas in the Galaxy at once by observing 12CO, 13CO, and C18O J = 1 − 0 lines simultaneously. The mapping regions are a part of the 1st quadrant (10◦ ≤ l ≤ 50◦, |b| ≤ 1◦) and the 3rd quadrant (198◦ ≤ l ≤ 236◦, |b| ≤ 1◦) of the Galaxy, where spiral arms, bar structure, and the molecular gas ring are included. This survey achieves the highest angular resolution to date (∼20′′) for the Galactic plane survey in the CO J = 1 − 0 lines, which makes it possible to find dense clumps located farther away than the previous surveys. FUGIN will provide us with an invaluable dataset for investigating the physics of the galactic interstellar medium (ISM), particularly the evolution of interstellar gas covering galactic scale structures to the internal structures of giant molecular clouds, such as small filament/clump/core. We present an overview of the FUGIN project, observation plan, and initial results, which reveal wide-field and detailed structures of molecular clouds, such as entangled filaments that have not been obvious in previous surveys, and large-scale kinematics of molecular gas such as spiral arms. Copyright © 2017, The Authors. All rights reserved.

关键词： Surveys

来源：评论

学校读者我要写书评

暂无评论

Random close packing in protein cores

引用

Physical Review E 2016年第3期93卷 032415-032415页

作者： Jennifer C. Gaines W. Wendell Smith Lynne Regan Corey S. O'Hern Program in Computational Biology and Bioinformatics Yale University New Haven Connecticut 06520 USA Integrated Graduate Program in Physical and Engineering Biology (IGPPEB) Yale University New Haven Connecticut 06520 USA Department of Physics Yale University New Haven Connecticut 06520 USA Department of Molecular Biophysics & Biochemistry Yale University New Haven Connecticut 06520 USA Department of Chemistry Yale University New Haven Connecticut 06520 USA Department of Mechanical Engineering & Materials Science Yale University New Haven Connecticut 06520 USA Department of Applied Physics Yale University New Haven Connecticut 06520 USA

Shortly after the determination of the first protein x-ray crystal structures, researchers analyzed their cores and reported packing fractions ϕ≈0.75, a value that is similar to close packing of equal-sized spheres. A limitation of these analyses was the use of extended atom models, rather than the more physically accurate explicit hydrogen model. The validity of the explicit hydrogen model was proved in our previous studies by its ability to predict the side chain dihedral angle distributions observed in proteins. In contrast, the extended atom model is not able to recapitulate the side chain dihedral angle distributions, and gives rise to large atomic clashes at side chain dihedral angle combinations that are highly probable in protein crystal structures. Here, we employ the explicit hydrogen model to calculate the packing fraction of the cores of over 200 high-resolution protein structures. We find that these protein cores have ϕ≈0.56, which is similar to results obtained from simulations of random packings of individual amino acids. This result provides a deeper understanding of the physical basis of protein structure that will enable predictions of the effects of amino acid mutations to protein cores and interfaces of known structure.

关键词： Protein structure Proteins

来源：评论

学校读者我要写书评

暂无评论

In vivo evaluation of Zinc-containing nanostructured carbonated hydroxyapatite 27th

In vivo evaluation of Zinc-containing nanostructured carbona...

引用

27th Symposium and Annual Meeting of the International Society for Ceramics in Medicine, 2015

作者： Ribeiro, Simone Sartoretto, Suelen Cristina Resende, Rodrigo Uzeda, Marcelo Alves, Adriana Terezinha Santos, Silvia Albuquerque Pesce, Giovana Rossi, Alexandre Malta Granjeiro, José Mauro Miguel, Fúlvio Calasans-Maia, Mônica Diuana Graduate Program in Dentistry Fluminense Federal University Rua Mario Santos Braga Niterói Rio de Janeiro Brazil Applied Physics Department LABIOMAT Brazilian Center for Physics Research Rua Xavier Sigaud 150 Rio de Janeiro Rio de Janeiro Brazil Division of Bioengineering National Institute of Metrology Quality and Technology Duque de Caxias Rio de Janeiro Brazil Health Sciences Center Federal University of the Recôncavo of Bahia Santo Antônio de Jesus Bahia Brazil Department of Oral Surgery Dentistry School Fluminense Federal University Rua Mario Santos Braga 28 Niteroi Rio de Janeiro Brazil

ISBN: (纸本)9783035710403

The hydroxyapatite (HA) is a biocompatible and bioactive biomaterial used as bone substitute, however, the high crystallinity of HA and consequently its low solubility may be a limitation for its clinical use. In order to improve the biosorption of HA, the partial substitutions in the chemical structure and doping with small amounts of impurities have been study. The objective of this study was to evaluate the biocompatibility of 3% Zinc-containing nanostructured carbonated hydroxyapatite (ZncHA) compared with the carbonated hydroxyapatite (cHA), both synthesized at 37°C and non-sintered, using as control the stoichiometric HA microspheres in subcutaneous of mice. The X-ray Diffraction (XRD) and Vibrational Spectroscopy in Infra Red Fourier Transform (FTIR) were used to characterize the biomaterials. In vivo test was performed in BALB/c mice by implanting of HA, cHA and ZncHA spheres in the subcutaneous tissue for 1, and 9 weeks (n=5). The negative control consisted in incision without material implantation (Sham group). The samples were histological processed to descriptive analysis of biological effect. The microscopic analysis showed a similar granulation reaction between groups at the first experimental period. In 9 weeks there was a time dependent biosorption of cHA compared with other groups. In conclusion, the biomaterials tested were biocompatible and cHA group showed a significant biosorption in comparison with HA and ZncHA groups. The doping of zinc did not influence the biocompatibility of biomaterial, however, change the biosorption response. © 2016 Trans Tech Publications, Switzerland.

关键词： Hydroxyapatite

来源：评论

学校读者我要写书评

暂无评论

Observation of Long-Range Elliptic Azimuthal Anisotropies in s=13 and 2.76 TeV pp Collisions with the ATLAS Detector

引用

Physical Review Letters 2016年第17期116卷 172301-172301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. Artz 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. Beach 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 Ontario 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 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 inst

ATLAS has measured two-particle correlations as a function of the relative azimuthal angle, Δϕ, and pseudorapidity, Δη, in s=13 and 2.76 TeV pp collisions at the LHC using charged particles measured in the pseudorapidity interval |η|<2.5. The correlation functions evaluated in different intervals of measured charged-particle multiplicity show a multiplicity-dependent enhancement at Δϕ∼0 that extends over a wide range of Δη, which has been referred to as the “ridge.” Per-trigger-particle yields, Y(Δϕ), are measured over 2<|Δη|<5. For both collision energies, the Y(Δϕ) distribution in all multiplicity intervals is found to be consistent with a linear combination of the per-trigger-particle yields measured in collisions with less than 20 reconstructed tracks, and a constant combinatoric contribution modulated by cos(2Δϕ). The fitted Fourier coefficient, v2,2, exhibits factorization, suggesting that the ridge results from per-event cos(2ϕ) modulation of the single-particle distribution with Fourier coefficients v2. The v2 values are presented as a function of multiplicity and transverse momentum. They are found to be approximately constant as a function of multiplicity and to have a pT dependence similar to that measured in p+Pb and Pb+Pb collisions. The v2 values in the 13 and 2.76 TeV data are consistent within uncertainties. These results suggest that the ridge in pp collisions arises from the same or similar underlying physics as observed in p+Pb collisions, and that the dynamics responsible for the ridge has no strong s dependence.

关键词： Collective flow Particle & resonance production Relativistic heavy-ion collisions

来源：评论

学校读者我要写书评

暂无评论

Measurement of the Inelastic Proton-Proton Cross Section at s=13 TeV with the ATLAS Detector at the LHC

引用

Physical Review Letters 2016年第18期117卷 182002-182002页

作者： M. Aaboud G. Aad B. Abbott J. Abdallah O. Abdinov B. Abeloos R. Aben O. S. AbouZeid N. L. Abraham 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 B. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire B. M. M. Allbrooke B. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani M. Alstaty 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 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 C. Antel M. Antonelli A. Antonov 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 L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asbah A. Ashkenazi B. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. B. Atlay K. Augsten G. Avolio B. Axen M. K. Ayoub G. Azuelos M. A. Baak A. E. Baas M. J. Baca H. Bachacou K. Bachas M. Backes M. Backhaus P. Bagiacchi P. Bagnaia Y. Bai 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-S Barisits T. Barklow N. Barlow S. L. Barnes B. M. Barnett R. M. Barnett Z. Barnovska A. Baroncelli G. Barone A. J. Barr L. Barranco Navarro F. Barreiro J. Barreiro Guimarães da Costa R. Bartoldus A. E. Barton P. Bartos A. Basalaev A. Bassalat R. L. Bates S. J. Batista J. R. Batley M. Battaglia M. Bauce F. Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA University of Iowa Iowa City Iowa USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel 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 Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nu

This Letter presents a measurement of the inelastic proton-proton cross section using 60 μb−1 of pp collisions at a center-of-mass energy s of 13 TeV with the ATLAS detector at the LHC. Inelastic interactions are selected using rings of plastic scintillators in the forward region (2.07<|η|<3.86) of the detector. A cross section of 68.1±1.4 mb is measured in the fiducial region ξ=MX2/s>10−6, where MX is the larger invariant mass of the two hadronic systems separated by the largest rapidity gap in the event. In this ξ range the scintillators are highly efficient. For diffractive events this corresponds to cases where at least one proton dissociates to a system with MX>13 GeV. The measured cross section is compared with a range of theoretical predictions. When extrapolated to the full phase space, a cross section of 78.1±2.9 mb is measured, consistent with the inelastic cross section increasing with center-of-mass energy.

关键词： Particle interactions Particle production Quark & gluon jets Hadron colliders

来源：评论

学校读者我要写书评

暂无评论

Search for Higgs and Z Boson Decays to ϕγ with the ATLAS Detector

引用

Physical Review Letters 2016年第11期117卷 111802-111802页

作者： M. Aaboud G. Aad B. Abbott J. Abdallah O. Abdinov B. Abeloos R. Aben O. S. AbouZeid N. L. Abraham 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 B. Ali M. Aliev G. Alimonti J. Alison S. P. Alkire B. M. M. Allbrooke B. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani M. Alstaty 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 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 C. Antel M. Antonelli A. Antonov 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 L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asbah A. Ashkenazi B. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. B. Atlay K. Augsten G. Avolio B. Axen M. K. Ayoub G. Azuelos M. A. Baak A. E. Baas M. J. Baca H. Bachacou K. Bachas M. Backes M. Backhaus P. Bagiacchi P. Bagnaia Y. Bai 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-S Barisits T. Barklow N. Barlow S. L. Barnes B. M. Barnett R. M. Barnett Z. Barnovska A. Baroncelli G. Barone A. J. Barr L. Barranco Navarro F. Barreiro J. Barreiro Guimarães da Costa R. Bartoldus A. E. Barton P. Bartos A. Basalaev A. Bassalat R. L. Bates S. J. Batista J. R. Batley M. Battaglia M. Bauce F. Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco CPPM Aix-Marseille Université and CNRS/IN2P3 Marseille France Homer L. Dodge Department of Physics and Astronomy University of Oklahoma Norman Oklahoma USA University of Iowa Iowa City Iowa USA Institute of Physics Azerbaijan Academy of Sciences Baku Azerbaijan LAL Université Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam Netherlands Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA Department of Physics and Astronomy University of Sussex Brighton United Kingdom Raymond and Beverly Sackler School of Physics and Astronomy Tel Aviv University Tel Aviv Israel Department of Physics Technion: Israel Institute of Technology Haifa Israel 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 Join

A search for the decays of the Higgs and Z bosons to a ϕ meson and a photon is performed with a pp collision data sample corresponding to an integrated luminosity of 2.7 fb−1 collected at s=13 TeV with the ATLAS detector at the LHC. No significant excess of events is observed above the background, and 95% confidence level upper limits on the branching fractions of the Higgs and Z boson decays to ϕγ of 1.4×10−3 and 8.3×10−6, respectively, are obtained.

关键词： Electroweak interaction Leptonic, semileptonic & radiative decays Higgs bosons Strange quark Hadron colliders

来源：评论

学校读者我要写书评

暂无评论

Measurement of the ZZ Production Cross Section in pp Collisions at s=13 TeV with the ATLAS Detector

引用

Physical Review Letters 2016年第10期116卷 101801-101801页

作者： G. Aad B. Abbott J. Abdallah O. Abdinov B. Abeloos 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 B. W. Allen P. P. Allport A. Aloisio A. Alonso F. Alonso C. Alpigiani 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 L. J. Armitage O. Arnaez H. Arnold M. Arratia O. Arslan A. Artamonov G. Artoni S. Artz S. Asai N. Asbah A. Ashkenazi B. Åsman L. Asquith K. Assamagan R. Astalos M. Atkinson N. B. Atlay K. Augsten G. Avolio B. Axen M. K. Ayoub G. Azuelos M. A. Baak A. E. Baas M. J. Baca H. Bachacou K. Bachas M. Backes M. Backhaus P. Bagiacchi P. Bagnaia Y. Bai 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 L. Barranco Navarro 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 LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay France Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam The Netherlands Department of Physics and Astronomy Michigan State University East Lansing Michigan USA Santa Cruz Institute for Particle Physics University of California Santa Cruz Santa Cruz California USA 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 Department of Physics Boston University Boston Massachusetts USA Joint Institute for Nuclear Research JINR Dubna Dubna Russia INFN Sez

The ZZ production cross section in proton-proton collisions at 13 TeV center-of-mass energy is measured using 3.2 fb−1 of data recorded with the ATLAS detector at the Large Hadron Collider. The considered Z boson candidates decay to an electron or muon pair of mass 66–116 GeV. The cross section is measured in a fiducial phase space reflecting the detector acceptance. It is also extrapolated to a total phase space for Z bosons in the same mass range and of all decay modes, giving 16.7−2.0+2.2(stat)+0.9−0.7(syst)+1.0−0.7(lumi) pb. The results agree with standard model predictions.

关键词： Electroweak interaction Particle production W & Z bosons Hadron colliders Multi-purpose particle detectors

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：