The evolution of the number density of compact galaxies

We compare the number density of compact (small size) massive galaxies at low and high redshift using our Padova Millennium Galaxy and Group Catalogue (PM2GC) at z=0.03-0.11 and the CANDELS results from Barro et al. (2013) at z=1-2. The number density of local compact galaxies with luminosity weighted (LW) ages compatible with being already passive at high redshift is compared with the density of compact passive galaxies observed at high-z. Our results place an upper limit of a factor ~2 to the evolution of the number density and are inconsistent with a significant size evolution for most of the compact galaxies observed at high-z. The evolution may be instead significant (up to a factor 5) for the most extreme, ultracompact galaxies. Considering all compact galaxies, regardless of LW age and star formation activity, a minority of local compact galaxies (<=1/3) might have formed at z<1. Finally, we show that the secular decrease of the galaxy stellar mass due to simple stellar evolution may in some cases be a non-negligible factor in the context of the evolution of the mass-size relation, and we caution that passive evolution in mass should be taken into account when comparing samples at different redshifts.Comment: ApJ in pres

A New SUSY mass reconstruction method at the CERN LHC

We propose a new mass reconstruction technique for SUSY processes at the LHC. The idea is to completely solve the kinematics of the SUSY cascade decay by using the assumption that the selected events satisfy the same mass shell conditions of the sparticles involved in the cascade decay. Using this technique, we study the measurement of the mass of the bottom squarks in the cascade decay of the gluino. Based on the final state including two high p_T leptons and two b-jets, we investigate different possible approaches to the mass reconstruction of the gluino and the two bottom squarks. In particular we evaluate the performance of different algorithms in discriminating two bottom squark states with a mass difference as low as 5%.Comment: Revtex 16 pages, 8 figure

Bimagnon studies in cuprates with Resonant Inelastic X-ray Scattering at the O K edge. II - The doping effect in La2-xSrxCuO4

We present RIXS data at O K edge from La2-xSrxCuO4 vs. doping between x=0.10 and x=0.22 with attention to the magnetic excitations in the Mid-Infrared region. The sampling done by RIXS is the same as in the undoped cuprates provided the excitation is at the first pre-peak induced by doping. Note that this excitation energy is about 1.5 eV lower than that needed to see bimagnons in the parent compound. This approach allows the study of the upper region of the bimagnon continuum around 450 meV within about one third of the Brilluoin Zone around \Gamma. The results show the presence of damped bimagnons and of higher even order spin excitations with almost constant spectral weight at all the dopings explored here. The implications on high Tc studies are briefly addressed

Evaluating parenting capacity: Validity problems with the MMPI, PAI, CAPI and ratings of child adjustment

Practitioners who conduct assessments of parenting capacity for the courts are faced with the challenge of determining the extent to which positive self-presentation by parents distorts test findings. This study examined positive self-presentation bias on commonly used psychological tests in cases referred following removal of children from the home because of abuse or neglect. Substantial positive self-presentation bias was apparent on the measures examined, and parents who presented themselves positively on one test tended to do so on others. Intellectual functioning did not account for these findings. The results demonstrate the pervasive problem of positive self-presentation bias in compromising the validity of test results in this population. Recommendations for conducting clinical assessments with this population are offered, including direction for the use and interpretation of psychological tests

New Epicenters for Production Development in Port Cities: The Digital Innovation Hub in Genoa

In the framework of infrastructural upgrading that the port city of Genoa has been going through for at least two decades, the episode of the Erzelli Science and Technology Park represents a unicum for geographic location, functional programme, implementation process, and actors involved. Located on the hill of the eponymous name, the Park hosts the Liguria Digital Innovation Hub, responding to a need for delocalisation and territorial aggregation of large activities related to technology, production, the service sector and scientific research. The contribution explores how the realization of the Park addresses critical issues related to accessibility and to the attractiveness of the territories, declining the theme of development epicenters from a technological, productive and tertiary point of view

The concentration-mass relation of clusters of galaxies from the OmegaWINGS survey

The relation between a cosmological halo concentration and its mass (cMr) is a powerful tool to constrain cosmological models of halo formation and evolution. On the scale of galaxy clusters the cMr has so far been determined mostly with X-ray and gravitational lensing data. The use of independent techniques is helpful in assessing possible systematics. Here we provide one of the few determinations of the cMr by the dynamical analysis of the projected-phase-space distribution of cluster members. Based on the WINGS and OmegaWINGS data sets, we used the Jeans analysis with the MAMPOSSt technique to determine masses and concentrations for 49 nearby clusters, each of which has ~60 spectroscopic members or more within the virial region, after removal of substructures. Our cMr is in statistical agreement with theoretical predictions based on LambdaCDM cosmological simulations. Our cMr is different from most previous observational determinations because of its flatter slope and lower normalization. It is however in agreement with two recent cMr obtained using the lensing technique on the CLASH and LoCuSS cluster data sets. In the future we will extend our analysis to galaxy systems of lower mass and at higher redshifts.Comment: Astronomy & Astrophysics in press. 11 pages, 6 figure

Quartic anomalous couplings at LEP

The search for quartic anomalous gauge couplings at LEP requires appropriate predictions for the radiative processes e+ e- \to \nu\bar\nu \gamma\gamma, e+ e- \to q\bar{q}\gamma\gamma and e+ e- \to 4 fermions+\gamma. Matrix elements are exactly computed at the tree level, and the effects of anomalous couplings and initial-state radiation are included. Comparisons with results and approximations existing in the literature are shown and commented. Improved versions of the event generators NUNUGPV and WRAP are made available for experimental analysis.Comment: LaTeX, 12 pages, 5 figures. Minor changes, version to appear in Phys. Lett.

Higgs signals and hard photons at the Next Linear Collider: the ZZZZ-fusion channel in the Standard Model

In this paper, we extend the analyses carried out in a previous article for $WW$-fusion to the case of Higgs production via $ZZ$-fusion within the Standard Model at the Next Linear Collider, in presence of electromagnetic radiation due real photon emission. Calculations are carried out at tree-level and rates of the leading order (LO) processes e^+e^-\rightarrow e^+e^- H \ar e^+e^- b\bar b and e^+e^-\rightarrow e^+e^- H \ar e^+e^- WW \ar e^+e^- \mathrm{jjjj} are compared to those of the next-to-leading order (NLO) reactions e^+e^-\rightarrow e^+e^- H (\gamma)\ar e^+e^- b\bar b \gamma and e^+e^-\rightarrow e^+e^- H (\gamma)\ar e^+e^- WW (\gamma) \ar e^+e^- \mathrm{jjjj}\gamma, in the case of energetic and isolated photons.Comment: 12 pages, LaTeX, 5 PostScript figures embedded using epsfig and bitmapped at 100dpi, complete paper including high definition figures available at ftp://axpa.hep.phy.cam.ac.uk/stefano/cavendish_9611.ps or at http://www.hep.phy.cam.ac.uk/theory/papers

Atividade respiratória, produção de etileno e vida útil de repolho (Brassica oleracea, var. capitata) minimamente processado em atmosfera controlada.

Com o objetivo de avaliar a atividade respiratória e a produção de etileno do repolho inteiro e minimamente processado e a vida útil do repolho mimimamente processado em atmosfera controlada, realizaram-se dois experimentos em etapas seqüenciais. Na primeira etapa, avaliaram-se a atividade respiratória e a produção de etileno do repolho inteiro e minimamente processado, em sistema fechado, nas temperaturas de 5 ºC e 10 ºC. Na segunda etapa, avaliou-se a vida útil do repolho minimamente processado em atmosfera controlada. O produto foi submetido a fluxo contínuo de misturas gasosas ternárias, com concentrações de 2% a 10% de O2 e de 3% a 10% de CO2, previamente umidificadas, na temperatura de 5 ºC por 10 dias. Como controle, foi utilizado o ar atmosférico. A atividade respiratória do repolho inteiro e minimamente processado, armazenado a 5 ºC, foi significativamente menor que a do armazenado a 10 ºC, sendo que, em ambas as temperaturas, o repolho minimamente processado foi o que obteve a maior atividade respiratória com relação ao repolho inteiro. Não foi detectada a produção de etileno pelo método de análise utilizado. A atmosfera controlada não prolongou a vida útil do repolho minimamente processado nas concentrações de 2% a 10% de oxigênio e de 3% a 10% de dióxido de carbono