6 research outputs found
ConservaciĂłn y restauraciĂłn de arte contemporĂĄneo: Los fondos del MACVAC
El presente artĂculo pretende mostrar la complejidad de la conservaciĂłn restauraciĂłn del arte contemporĂĄneo, a travĂ©s de reflexiones, planteamientos, criterios, entrevistas con artistas y soluciones planteadas en torno a la recuperaciĂłn de varias obras pertenecientes a los fondos del MACVAC.This article attempts to show the complexity of the conservation/restoration of contemporary art, through reflections, approaches, criteria, artist interviews and considered solutions on the recovery of several pieces of art works from the MACVAC vault
Charged-particle multiplicities in pp interactions at root s=900 GeV measured with the ATLAS detector at the LHC
22 pĂĄginas, 4 figuras, 1 tabla.-- et al.(ATLAS Collaboration).-- arXiv:1003.3124v2The first measurements from proton-proton collisions recorded with the ATLAS detector at the LHC are presented. Data were collected in December 2009 using a minimum-bias trigger during collisions at a centre-of-mass energy of 900 GeV. The charged-particle multiplicity, its dependence on transverse momentum and pseudorapidity. and the relationship between mean transverse momentum and charged-particle multiplicity are measured for events with at least one charged particle in the kinematic range vertical bar eta vertical bar 500 MeV. The measurements are compared to Monte Carlo models of proton-proton collisions and to results from other experiments at the same centre-of-mass energy. The charged-particle multiplicity per event and unit of pseudorapidity eta = 0 is measured to be 1.333 +/- 0.003(stat.) +/- 0.040(syst.), which is 5-15% higher than the Monte Carlo models predict.We are greatly indebted to all CERNâs departments and to the LHC
project for their immense efforts not only in building the LHC, but also
for their direct contributions to the construction and installation of the ATLAS
detector and its infrastructure. All our congratulations go to the LHC
operation team for the superb performance during this initial data-taking period. We acknowledge equally warmly all our technical colleagues in the
collaborating Institutions without whom the ATLAS detector could not have
been built. Furthermore we are grateful to all the funding agencies which
supported generously the construction and the commissioning of the ATLAS
detector and also provided the computing infrastructure.
The ATLAS detector design and construction has taken about fifteen
years, and our thoughts are with all our colleagues who sadly could not see
its final realisation.
We acknowledge the support of ANPCyT, Argentina; Yerevan Physics
Institute, Armenia; ARC and DEST, Australia; Bundesministerium fĂŒr Wissenschaft
und Forschung, Austria; National Academy of Sciences of Azerbaijan;
State Committee on Science & Technologies of the Republic of Belarus;
CNPq and FINEP, Brazil; NSERC, NRC, and CFI, Canada; CERN; CONICYT,
Chile; NSFC, China; COLCIENCIAS, Colombia; Ministry of Education,
Youth and Sports of the Czech Republic, Ministry of Industry and
Trade of the Czech Republic, and Committee for Collaboration of the Czech
Republic with CERN; Danish Natural Science Research Council and the
Lundbeck Foundation; European Commission, through the ARTEMIS Research
Training Network; IN2P3-CNRS and Dapnia-CEA, France; Georgian
Academy of Sciences; BMBF, HGF, DFG and MPG, Germany; Ministry of
Education and Religion, through the EPEAEK program PYTHAGORAS II
and GSRT, Greece; ISF, MINERVA, GIF, DIP, and Benoziyo Center, Israel;
INFN, Italy; MEXT, Japan; CNRST, Morocco; FOM and NWO, Netherlands;
The Research Council of Norway; Ministry of Science and Higher
Education, Poland; GRICES and FCT, Portugal; Ministry of Education and
Research, Romania; Ministry of Education and Science of the Russian Federation
and State Atomic Energy Corporation âRosatomâ; JINR; Ministry
of Science, Serbia; Department of International Science and Technology Cooperation,
Ministry of Education of the Slovak Republic; Slovenian Research
Agency, Ministry of Higher Education, Science and Technology, Slovenia;
Ministerio de EducaciĂłn y Ciencia, Spain; The Swedish Research Council,
The Knut and Alice Wallenberg Foundation, Sweden; State Secretariat for
Education and Science, Swiss National Science Foundation, and Cantons of
Bern and Geneva, Switzerland; National Science Council, Taiwan; TAEK,
Turkey; The Science and Technology Facilities Council and The Leverhulme
Trust, United Kingdom; DOE and NSF, United States of America.Peer reviewe
Search for WZ resonances in the fully leptonic channel using pp collisions at s=8 TeV with the ATLAS detector
A search for resonant WZ production in the âÎœâ'â' (â,â'=e,ÎŒ) decay channel using 20.3 fb-1 of s=8TeV pp collision data collected by the ATLAS experiment at LHC is presented. No significant deviation from the Standard Model prediction is observed and upper limits on the production cross sections of WZ resonances from an extended gauge model W' and from a simplified model of heavy vector triplets are derived. A corresponding observed (expected) lower mass limit of 1.52 (1.49) TeV is derived for the W' at the 95% confidence level.Peer Reviewe
Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in âs = 8 TeV pp collisions with the ATLAS detector
Aad, G. et al.A search for the direct production of charginos and neutralinos in final states with three leptons and missing transverse momentum is presented. The analysis is based on 20.3 fbâ1 of sâ = 8 TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with the Standard Model expectations and limits are set in R-parity-conserving phenomenological Minimal Supersymmetric Standard Models and in simplified supersymmetric models, significantly extending previous results. For simplified supersymmetric models of direct chargino (Ï˱1) and next-to-lightest neutralino (ÏË02) production with decays to lightest neutralino (ÏË01) via either all three generations of sleptons, staus only, gauge bosons, or Higgs bosons, (Ï˱1) and (ÏË02) masses are excluded up to 700 GeV, 380 GeV, 345 GeV, or 148 GeV respectively, for a massless (ÏË01).We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW and NCN, Poland; GRICES and FCT, Portugal; MNE/IFA, Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZËS, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey.Peer reviewe
Measurement of the production cross section of prompt J/Ï mesons in association with a W ± boson in pp collisions at âs = 7 TeV with the ATLAS detector
Aad, G. et al.The process pp â W ± J/Ï provides a powerful probe of the production mechanism of charmonium in hadronic collisions, and is also sensitive to multiple parton interactions in the colliding protons. Using the 2011 ATLAS dataset of 4.5 fbâ1 of sâ = 7 TeV pp collisions at the LHC, the first observation is made of the production of W ± + prompt J/Ï events in hadronic collisions, using W ± â ΌΜ ÎŒ and J/Ï â ÎŒ + ÎŒ â. A yield of 27.4+7.5â6.5 W ± + prompt J/Ï events is observed, with a statistical significance of 5.1Ï. The production rate as a ratio to the inclusive W ± boson production rate is measured, and the double parton scattering contribution to the cross section is estimated.We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW and NCN, Poland; GRICES and FCT, Portugal; MNE/IFA, Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZËS, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America.Peer reviewe
AnĂ lisi i aplicacions del nebulitzador per ultrasons sobre obra pictĂČrica i grĂ fica
El present article tracta sobre lâaplicaciĂł dels nebulitzadors per ultrasons en el camp dels bĂ©ns culturals, realitzant dâuna manera didĂ ctica un recorregut a travĂ©s dels fonaments de la tĂšcnica, la histĂČria del seu Ășs i les principals aplicacions. Inclou, dâaltra banda, algunes pautes per treballar amb aquests aparells, els seus avantatges i desavantatges, aixĂ com unes conclusions i una bibliografia bĂ sica, a lâespera que puguin ser dâutilitat prĂ ctica per a aquells interessats en el tema.