The seesaw mechanism at TeV scale in the 3-3-1 model with right-handed neutrinos

We implement the seesaw mechanism in the 3-3-1 model with right-handed neutrinos. This is accomplished by the introduction of a scalar sextet into the model and the spontaneous violation of the lepton number. We identify the Majoron as a singlet under $SU_L(2)\otimes U_Y(1)$ symmetry, which makes it safe under the current bounds imposed by electroweak data. The main result of this work is that the seesaw mechanism works already at TeV scale with the outcome that the right-handed neutrino masses lie in the electroweak scale, in the range from MeV to tens of GeV. This window provides a great opportunity to test their appearance at current detectors, though when we contrast our results with some previous analysis concerning detection sensitivity at LHC, we conclude that further work is needed in order to validate this search.Comment: about 13 pages, no figure

Spontaneous breaking of a global symmetry in a 331 model

In a 331 model in which the lepton masses arise from a scalar sextet it is possible to break spontaneously a global symmetry implying in a pseudoscalar majoron-like Goldstone boson. This majoron does not mix with any other scalar fields and for this reason it does not couple, at the tree level, neither to the charged leptons nor to the quarks. Moreover, its interaction with neutrinos is diagonal. We also argue that there is a set of the parameters in which that the model can be consistent with the invisible Z^0-width and that heavy neutrinos can decay sufficiently rapid by majoron emission having a lifetime shorter than the age of the universe.Comment: RevTex, 10 pages, one .eps figur

Desempenho de novilhos Simental alimentados com silagem de sorgo, cana-de-açúcar e palhada de arroz tratada ou não com amônia anidra.

Avaliou-se o desempenho de novilhos alimentados com dietas contendo palhada de arroz amonizada, palhada de arroz + uréia, cana-de-açúcar + uréia e silagem de sorgo. Utilizaram-se 16 novilhos, Simental PO, com peso vivo médio de 400 kg, distribuídos em delineamento inteiramente casualizado. O experimento teve duração de 88 dias, sendo 15 de adaptação e 61 dias de avaliação, divididos em três períodos de 21 dias. O consumo total de MS, que variou de 7,1 a 10,0 kg/dia, diferiu entre as dietas, registrando-se maiores consumos para os animais que receberam dietas contendo palhada de arroz amonizada e silagem de sorgo, que, por sua vez, não diferiram entre si. A conversão alimentar não diferiu entre as diferentes dietas, registrando-se valor médio de 6,6. Observou-se maior ganho de peso para os animais que receberam palhada de arroz amonizada (1,59 kg/dia) em relação à palhada mais uréia (1,25 kg/dia). O efeito da amonização, melhorando o valor nutritivo da palhada de arroz, resultou em maior consumo voluntário deste volumoso e, conseqüentemente, em maior ganho diário de peso vivo dos animais, em relação à palhada de arroz não-tratada e suplementada com uréia

MiniBooNE Results and Neutrino Schemes with 2 sterile Neutrinos: Possible Mass Orderings and Observables related to Neutrino Masses

The MiniBooNE and LSND experiments are compatible with each other when two sterile neutrinos are added to the three active ones. In this case there are eight possible mass orderings. In two of them both sterile neutrinos are heavier than the three active ones. In the next two scenarios both sterile neutrinos are lighter than the three active ones. The remaining four scenarios have one sterile neutrino heavier and another lighter than the three active ones. We analyze all scenarios with respect to their predictions for mass-related observables. These are the sum of neutrino masses as constrained by cosmological observations, the kinematic mass parameter as measurable in the KATRIN experiment, and the effective mass governing neutrinoless double beta decay. It is investigated how these non-oscillation probes can distinguish between the eight scenarios. Six of the eight possible mass orderings predict positive signals in the KATRIN and future neutrinoless double beta decay experiments. We also remark on scenarios with three sterile neutrinos. In addition we make some comments on the possibility of using decays of high energy astrophysical neutrinos to discriminate between the mass orderings in presence of two sterile neutrinos.Comment: 33 pages, 8 figures. Comments added, to appear in JHE

And after the Sensory Processing Disorders? - What answers does the DSM-5 have

Introduction: From the question of whether the diagnosis of Sensory Processing Disorder (SPD) should have classification matching in the DSM-5 or whether it constitutes a pre-morbid condition for other pathologies, a retrospective study was conducted in 2016 titled Regulatory Disturbances: The Return to the Past - Conditioners of Evolution. The study did not show a significant association between the abnormal results obtained in the SDQ scale by children with PRPS and therapeutic intervention, which allowed us to conclude that it is imperative to rethink the intervention of these cases. From these results and the lack of corresponding diagnosis in DSM-5, the present study intends to understand what possible diagnoses these children have in the latency / adolescence and adult age and what are the therapeutic interventions required. Objectives: Characterize the sample of children diagnosed with Sensory Processing Disorder who used the psychiatry consultation at the unity of infant mental health (UPI) between 2006-2013; characterize the results obtained at the follow-up; check current medical status, pharmacological therapy, other therapeutic interventions, and if they present another corresponding diagnosis in the DSM-5. Methods: Retrospective and follow-up study using the Clinical Processes of the first consultations performed between the years 2006 and 2013 at the UPI. Evaluation of the current state was made by telephone through a structured interview to the main caregivers and the application of the SDQ. The information will be submitted to statistical processing (in SPSS®), with descriptive analysis and correlation of variables. The sample is of Convenience. Results: 55 children with SPD (N=55), 47 of their caregivers answered a telephone interview (n=47). No statistically significant association was found between any SPD type and current diagnosis of ADHD nor parental perception of current state. Significant association between SPD diagnosis and abnormal results in subscales of hyperactivity (p = 0.027) and behavior problems (p = 0.017) of the SDQ. Discussion and Conclusion: The wide dispersion of diagnoses found may pose two hypotheses: SPD should be considered as an independent diagnostic category; symptomatology (alterations in the SP) can be common to different pathologies. It is important to carry out prospective studies in children diagnosed with SPD, in order to determine if it may be a future diagnostic category in the DSM.info:eu-repo/semantics/publishedVersio

High-precision αs\alpha_s measurements from LHC to FCC-ee

This document provides a writeup of all contributions to the workshop on "High precision measurements of $\alpha_s$: From LHC to FCC-ee" held at CERN, Oct. 12--13, 2015. The workshop explored in depth the latest developments on the determination of the QCD coupling $\alpha_s$ from 15 methods where high precision measurements are (or will be) available. Those include low-energy observables: (i) lattice QCD, (ii) pion decay factor, (iii) quarkonia and (iv) $\tau$ decays, (v) soft parton-to-hadron fragmentation functions, as well as high-energy observables: (vi) global fits of parton distribution functions, (vii) hard parton-to-hadron fragmentation functions, (viii) jets in $e^\pm$p DIS and $\gamma$-p photoproduction, (ix) photon structure function in $\gamma$-$\gamma$, (x) event shapes and (xi) jet cross sections in $e^+e^-$ collisions, (xii) W boson and (xiii) Z boson decays, and (xiv) jets and (xv) top-quark cross sections in proton-(anti)proton collisions. The current status of the theoretical and experimental uncertainties associated to each extraction method, the improvements expected from LHC data in the coming years, and future perspectives achievable in $e^+e^-$ collisions at the Future Circular Collider (FCC-ee) with $\cal{O}$(1--100 ab$^{-1}$) integrated luminosities yielding 10$^{12}$ Z bosons and jets, and 10$^{8}$ W bosons and $\tau$ leptons, are thoroughly reviewed. The current uncertainty of the (preliminary) 2015 strong coupling world-average value, $\alpha_s(m_Z)$ = 0.1177 $\pm$ 0.0013, is about 1\%. Some participants believed this may be reduced by a factor of three in the near future by including novel high-precision observables, although this opinion was not universally shared. At the FCC-ee facility, a factor of ten reduction in the $\alpha_s$ uncertainty should be possible, mostly thanks to the huge Z and W data samples available.Comment: 135 pages, 56 figures. CERN-PH-TH-2015-299, CoEPP-MN-15-13. This document is dedicated to the memory of Guido Altarell

Transcultural adaptation to the Brazilian Portuguese of the Postpartum Bonding Questionnaire for assessing the postpartum bond between mother and baby

The establishment of the bond between mother and baby in the postpartum period is important for ensuring the physical and psychological health of both. This short communication reports the first phase of the cross-cultural translation and adaptation to the Brazilian context of the Postpartum Bonding Questionnaire (PBQ). Four aspects of equivalence between the original scale and the Portuguese version were evaluated: the conceptual, semantic, operational and item equivalences. Literature review, the study of PBQ history, translation, expert evaluation, back-translation and pretests involving 30 mothers with children aging up to 7 months using a primary healthcare unit were conducted. Each step demonstrated the need for adjustments, which were made during the adaptation process. At the end of the study, a version of PBQ in Brazilian Portuguese equivalent to the original one was obtained, offering promise for national studies on the mother-baby bond, and its influence on health, and for use in health services

Electron impact ionization of 1-butanol: II. Total ionization cross sections and appearance energies

Experimental and theoretical data on total ionization cross sections for electron scattering by 1-butanol molecules in the energy range 10-100 eV are report in this work. The experimental data were obtained from the addition of partial ionization cross sections (PICS) of 38 cationic fragments registered using a Hiden Analytical quadrupole mass spectrometer (EPIC 300), which are reported in a companion paper (Pires et al., 2018). The theoretical data were generated using the Binary-Encounter-Bethe and independent atom model plus screening corrected additivity rule approaches. Additionally, we also report the appearance energies (AEs) and Wannier exponents for 36 of the 38 main cationic fragments observed in our experiments. Our experimental TICS data are typically found to be in good agreement with our theoretical results, and with other experimental and theoretical TICS data of 1-butanol currently available in the literature. Agreement of our AEs and the previous data, again where a comparison is possible, is also found to be satisfactory