Limited local electron-lattice coupling in manganites

(Pr,Ca)MnO3 is the archetypal charge-ordered manganite, but in Pr0.48Ca0.52MnO3 we find (using convergent-beam electron diffraction and dark-field images) that the superlattice period is locally incommensurate with respect to the parent lattice, and that the superlattice orientation possesses significant local variations. This suggests that local electron-lattice coupling never overwhelmingly dominates the rich physics of manganites, even in the most extreme scenarios that produce the largest colossal magnetoresistance effects.Comment: 9 pages, 4 figures; accepted in Physical Review

Phase shift of amplitude-modulated optical signals in graphene oxide water dispersions due to thermal lens focal length oscillation

We analyze the phase shift induced in an amplitude-modulated laser beam propagating through a water dispersion of graphene oxide sheets in a fiber-to-fiber U-bench. This phase shift arises from the thermally induced nonlinear refraction in the sample. The system exhibits strong optical limiting performance for weak continuous-wave signals. A theoretical model including beam propagation and thermal lens focal length oscillation reproduces the experimental findings

Incorporación de raíz de mandioca (Manihot sculenta) en la dieta de cerdos y su efecto sobre variables productivas

En un programa de alimentación de cerdos existe una gran variedad de ingredientes que pueden utilizarse en la formulación de la dieta. El objetivo del trabajo fue verificar la conveniencia de utilizar raíz de mandioca en sustitución del maíz como recurso energético en cerdos, mediante la medición de las variables productivas consumo de alimento, ganancia diaria de peso vivo y conversión alimenticia. En el ensayo se utilizó un diseño completamente aleatorizado. Tuvo una duración de 28 días: 7 de adaptación y 21 de medición. La experiencia incluyó 12 animales y cuatro dietas: dieta base (DB) con maíz molido (71%) más concentrado proteico (29%); dietas 33%, 66% y 100%: DB a las cuales se les reemplazó el 33%, el 66% y 100% del maíz por raíz de mandioca respectivamente. El análisis estadístico se realizó con el software InfoStat/P v.2011. Los resultados indicaron que para las variables consumo de alimento (1,63-DB; 1,56-33%; 1,53-66%; 1,44-100%) y ganancia diaria de peso vivo (0,42-DB; 0,40-33%; 0,39-66%; 0,36-100%) no hubo diferencias entre los tratamientos DB, 33% y 66%, siendo a su vez iguales entre sí los tres niveles de mandioca, mientras que para la conversión (3,91-DB; 3,90-33%; 3,93-66%; 4,02-100%) no hubo diferencias entre los cuatro tratamientos (p<0,05), lo cual permite concluir que, excepto en el nivel de 100%, la inclusión de la raíz de mandioca en distintos niveles es una opción viable para la alimentación de cerdos

The STAR Time Projection Chamber: A Unique Tool for Studying High Multiplicity Events at RHIC

The STAR Time Projection Chamber (TPC) is used to record collisions at the Relativistic Heavy Ion Collider (RHIC). The TPC is the central element in a suite of detectors that surrounds the interaction vertex. The TPC provides complete coverage around the beam-line, and provides complete tracking for charged particles within +- 1.8 units of pseudo-rapidity of the center-of-mass frame. Charged particles with momenta greater than 100 MeV/c are recorded. Multiplicities in excess of 3,000 tracks per event are routinely reconstructed in the software. The TPC measures 4 m in diameter by 4.2 m long, making it the largest TPC in the world.Comment: 28 pages, 11 figure

Tenemos cita con el arte: a pilot project of visits and workshops with people affected by Alzheimer's disease in the Prado Museum, the Centro de Arte Reina Sofía Museum and the Faculty of Fine Arts at the Complutense University of Madrid

GIMUPAI is a research group comprising teachers and researchers from the Faculty of Fine Arts (University Complutense of Madrid) and the Department of Social Psychology and Anthropology (Salamanca University) who have been working in art and health projects over the last thirteen years. Recently, we have carried out Tenemos cita con el arte, part of a national research project entitled "Art education in museums and other cultural institutions as a tool for increasing the wellbeing of people affected with Alzheimer" (Ministry of the Economy and Competitiveness-EDU2013-43253-R). The main objective of the program is to make the museum‘s artworks available to people with Alzheimer‘s and their caregivers, at the same time encouraging them to participate in artistic activities and artistic creation through art workshops. Tenemos cita con el arte has been designed as a program of visits of the Prado Museum and the Centro de Arte Reina Sofia Museum. The program also has included participation in workshops on visual arts and artistic creativity in the Faculty of Fine Arts. The program was undertaken between October and December 2015 with a group of 15 participants (Alzheimer‘s patients, caregivers, and other health and social workers)

Search for heavy stable charged particles in pp collisions at ?s = 7 TeV

The result of a search at the LHC for heavy stable charged particles produced in pp collisions at s?=7TeV is described. The data sample was collected with the CMS detector and corresponds to an integrated luminosity of 3.1 pb?1. Momentum and ionization-energy-loss measurements in the inner tracker detector are used to identify tracks compatible with heavy slow-moving particles. Additionally, tracks passing muon identification requirements are also analyzed for the same signature. In each case, no candidate passes the selection, with an expected background of less than 0.1 events. A lower limit at the 95% confidence level on the mass of a stable gluino is set at 398GeV/c 2, using a conventional model of nuclear interactions that allows charged hadrons containing this particle to reach the muon detectors. A lower limit of 311 GeV/c 2 is also set for a stable gluino in a conservative scenario of complete charge suppression, where any hadron containing this particle becomes neutral before reaching the muon detectors.We are grateful to Anna Kulesza and Michael Krämer for providing the theoretical production cross sections and associated uncertainties at next-to-leading order for pair production of eg and ˜t1. We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA)

Search for resonances in the dilepton mass distribution in pp collisions at √s = 7TeV

A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at √s = 7TeV. The event samples correspond to integrated luminosities of 40 pb−1 in the dimuon channel and 35 pb−1 in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z′) or as Kaluza-Klein graviton excitations (GKK) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z′(GKK) ! ℓ+ℓ− relative to Z ! ℓ+ℓ− are presented. These limits exclude at 95% confidence level a Z′ with standard-model-like couplings below 1140 GeV, the superstring-inspired Z′ ψ below 887 GeV, and, for values of the coupling parameter k/MPl of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA)

Search for light resonances decaying into pairs of muons as a signal of new physics

A search for groups of collimated muons is performed using a data sample collected by the CMS experiment at the LHC, at a centre-of-mass energy of 7 TeV, and corresponding to an integrated luminosity of 35 pb?1 . The analysis searches for production of new low-mass states decaying into pairs of muons and is designed to achieve high sensitivity to a broad range of models predicting leptonic jet signatures. With no excess observed over the background expectation, upper limits on the production cross section times branching fraction times acceptance are set, ranging from 0.1 to 0.5 pb at the 95% CL depending on event topology. In addition, the results are interpreted in several benchmark models in the context of supersymmetry with a new light dark sector exploring previously inaccessible parameter space.We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MSI (New Zealand); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA)

Search for a W'' boson decaying to a muon and a neutrino in pp collisions at vs=7 TeV

A new heavy gauge boson, , decaying to a muon and a neutrino, is searched for in pp collisions at a centre-of-mass energy of 7 TeV. The data, collected with the CMS detector at the LHC, correspond to an integrated luminosity of 36 pb?1. No significant excess of events above the standard model expectation is found in the transverse mass distribution of the muon?neutrino system. Masses below 1.40 TeV are excluded at the 95% confidence level for a sequential standard-model-like . The mass lower limit increases to 1.58 TeV when the present analysis is combined with the CMS result for the electron channel.We wish to congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC machine. We thank the technical and administrative staff at CERN and other CMS institutes, and acknowledge support from: FMSR (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); Academy of Sciences and NICPB (Estonia); Academy of Finland, ME, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLPFAI (Mexico); PAEC (Pakistan); SCSR (Poland); FCT (Portugal); JINR (Armenia, Belarus, Georgia, Ukraine, Uzbekistan); MST and MAE (Russia); MSTD (Serbia); MICINN and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); TUBITAK and TAEK (Turkey); STFC (United Kingdom); DOE and NSF (USA)