Prospects for mass scale and inverted hierarchy in non oscillations experiments

2009 ◽  
Author(s):  
SILVIA PASCOLI
Keyword(s):  
Mass Scale ◽  
Inverted Hierarchy

scholarly journals On Q6 flavor symmetry and the breaking of μ ↔ τ symmetry

2017 ◽  
Vol 32 (28n29) ◽  
pp. 1750171 ◽  
Author(s):  
Juan Carlos Gómez-Izquierdo ◽  
F. Gonzalez-Canales ◽  
M. Mondragón
Keyword(s):  
Neutrino Mass ◽  
Mass Spectra ◽  
Mass Scale ◽  
Double Beta Decay ◽  
Supersymmetric Model ◽  
Neutrino Masses ◽  
Flavor Symmetry ◽  
Inverted Hierarchy ◽  
Mixing Angles ◽  
Good Agreement

In the simplest version of a [Formula: see text] flavored supersymmetric model, we analyze the leptonic masses and mixings in the framework of a soft breaking of the [Formula: see text] symmetry. This breaking is controlled by the inequality [Formula: see text] in the effective neutrino mass. As a consequence of this breaking, the reactor and atmospheric angles are deviate from [Formula: see text] and [Formula: see text], respectively. Such deviations can be enhanced or suppressed by the CP parities in the Majorana phases, so an analytic study is carried out to remark their importance to constrain the free parameters that accommodate the mixing angles. The normal hierarchy is completely discarded in this model, the inverted hierarchy is less favored than the degenerate one where the reactor and atmospheric angles are in good agreement with the experimental data. Additionally, the model predicts defined regions for the effective neutrino mass decay, the neutrino mass scale and the sum of the neutrino masses in the inverted and degenerate mass spectra. Thus, this model may be testable by future experiments that focus on neutrinoless double beta decay.

scholarly journals CP violations in a predictive A4 symmetry model

2020 ◽  
Vol 2020 (3) ◽  
Author(s):  
T Phong Nguyen ◽  
L T Hue ◽  
D T Si ◽  
T T Thuc
Keyword(s):  
Neutrino Mass ◽  
Branching Ratio ◽  
Mass Scale ◽  
Double Beta Decay ◽  
Inverted Hierarchy ◽  
Yukawa Couplings ◽  
Cp Violations ◽  
Physical Consequences ◽  
The Right ◽  
O 10

Abstract We will investigate numerically a seesaw model with $A_4$ flavor symmetry to find allowed regions satisfying the current experimental neutrino oscillation data, then use them to predict physical consequences. Namely, the lightest active neutrino mass is of the order of $\mathcal{O}(10^{-2})$ eV. The effective neutrino mass $|\langle m\rangle|$ associated with neutrinoless double beta decay is in the range $[0.002 \,\mathrm{eV},0.038\,\mathrm{eV}]$ and $[0.048\,\mathrm{eV},0.058\,\mathrm{eV}]$, corresponding to the normal and the inverted hierarchy schemes, respectively. Other relations among relevant physical quantities are shown, so that they can be determined if some of them are confirmed experimentally. The recent data of the baryon asymmetry of the Universe ($\eta_B$) can be explained via leptogenesis caused by the effect of the renormalization group evolution on the Dirac Yukawa couplings, provided the right-handed neutrino mass scale $M_0$ ranges from $\mathcal{O}(10^8)$ GeV to $\mathcal{O}(10^{12})$ GeV for $\tan\beta =3$. This allowed $M_0$ range is different from the scale of $\mathcal{O}(10^{13})$ GeV for other effects that also generate a consistent $\eta_B$ from leptogenesis. The branching ratio of the decay $ \mu \rightarrow\,e\gamma$ may reach future experimental sensitivity for very light values of $M_0$. Hence, it will be inconsistent with the $M_0$ range predicted from the $\eta_B$ data whenever this decay is detected experimentally.

RHYNCHOLITES AND THE PROBLEM OF NARROW AND BROAD CONCEPTION OF TAXONS

2018 ◽  
pp. 12-17 ◽  
Author(s):  
I. R. Khuzina ◽  
V. N. Komarov
Keyword(s):  
Sexual Dimorphism ◽  
Morphological Characteristics ◽  
Mass Scale ◽  
Individual Variability ◽  
Point Of View ◽  
The Other ◽  
New Taxon ◽  
Artificial System ◽  
Broad Understanding

The paper considers a point of view, based on the conception of the broad understanding of taxons. According to this point of view, rhyncholites of the subgenus Dentatobeccus and Microbeccus are accepted to be synonymous with the genus Rhynchoteuthis, and subgenus Romanovichella is considered to be synonymous with the genus Palaeoteuthis. The criteria, exercising influence on the different approaches to the classification of rhyncholites, have been analyzed (such as age and individual variability, sexual dimorphism, pathological and teratological features, degree of disintegration of material), underestimation of which can lead to inaccuracy. Divestment of the subgenuses Dentatobeccus, Microbeccus and Romanovichella, possessing very bright morphological characteristics, to have an independent status and denomination to their synonyms, has been noted to be unjustified. An artificial system (any suggested variant) with all its minuses is a single probable system for rhyncholites. The main criteria, minimizing its negative sides and proving the separation of the new taxon, is an available mass-scale material. The narrow understanding of the genus, used in sensible limits, has been underlined to simplify the problem of the passing the view about the genus to the other investigators and recognition of rhyncholites for the practical tasks.

Epidemiology of Technology Use and Mental Health in the United States

2020 ◽  
pp. 41-56
Author(s):  
Seth W. Whiting ◽  
Rani A. Hoff
Keyword(s):  
Mental Health ◽  
United States ◽  
Technology Use ◽  
New Technologies ◽  
Role Playing ◽  
The United States ◽  
Mass Scale ◽  
Online Gambling ◽  
Health Issues ◽  
Mental Health Issues

Advancements in technologies and their mass-scale adoption throughout the United States create rapid changes in how people interact with the environment and each other and how they live and work. As technologies become commonplace in society through increased availability and affordability, several problems may emerge, including disparate use among groups, which creates divides in attainment of the beneficial aspects of a technology’s use and coinciding mental health issues. This chapter briefly overviews new technologies and associated emerging applications in information communication technologies, social media networks, video games and massively multiplayer online role-playing games, and online gambling, then examines the prevalence of use among the general population and its subgroups and further discusses potential links between mental health issues associated with each technology and implications of overuse.

scholarly journals Human-Survey Interaction (HSI): A Study on Integrity of Human Data Collectors in A Mass-Scale Hajj Pilgrimage Survey

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Saiful Islam Salim ◽  
Najla Abdulrahman Al-Nabhan ◽  
Masfiqur Rahaman ◽  
Nafisa Islam ◽  
Tarik Reza Toha ◽  
...  
Keyword(s):  
Mass Scale ◽  
Human Data

scholarly journals Infrastructure governance in the post-networked city: State-led, high-tech sanitation in Addis Ababa’s condominium housing

2021 ◽  
pp. 239965442110370
Author(s):  
Liza Rose Cirolia ◽  
Tesfaye Hailu ◽  
Julia King ◽  
Nuno F da Cruz ◽  
Jo Beall
Keyword(s):  
Addis Ababa ◽  
Methodological Approach ◽  
Mass Scale ◽  
The State ◽  
Rapid Expansion ◽  
High Tech ◽  
Middle Income ◽  
Lower Middle Class ◽  
City State ◽  
Sanitation Systems

Ethiopia’s mass-scale subsidized housing delivery programme has driven the rapid expansion of middle-income, mid-rise settlements on the outskirts of Addis Ababa, requiring the provision of infrastructure to newly developed areas. In the case of the Kotari housing project, established sanitation systems were deemed inappropriate for the site, resulting in the deployment of novel technology, a Membrane Bioreactor (MBR). Such decentralised technologies contribute to the heterogenous infrastructure configurations which characterise Addis Ababa’s sanitation landscape, reflected not only in material configurations but also in how they are governed. In this paper, we use the concept of ‘infrastructure interfaces’ as an analytical device to identify the key material connection points in the system. Working across scales, we scrutinise the governance arrangements at these critical junctures: the household, the block, the condominium, and the city. Our analysis challenges established understandings of infrastructural heterogeneity driven by the private sector, either through financialized elite infrastructures or informal survivalist practices. In Kotari, the state is the driver and the target is the lower middle class. Centring the state in these infrastructure configurations provides nuance to our understanding of how heterogeneity emerges. Our methodological approach accounts for governance at various scales, providing fresh insights into the relationality of infrastructure, particularly the human/technology interface and infrastructural failures. The case shows the importance of transcending binary readings of infrastructure configurations, such as on/off grid, state/private and formal/informal. Future work on the post-network city must go beyond simply denigrating or valorising alternative modes of service delivery.

scholarly journals Plant-Based Drugs and Vaccines for COVID-19

Vaccines ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 15
Author(s):  
Nasir Mahmood ◽  
Sarah Bushra Nasir ◽  
Kathleen Hefferon
Keyword(s):  
World Economy ◽  
Virus Transmission ◽  
Mass Scale ◽  
Plant Production ◽  
Way Of Life ◽  
Vaccine Candidates ◽  
The World ◽  
Antiviral Proteins

The coronavirus SARS-CoV-2 has turned our own health and the world economy upside down. While several vaccine candidates are currently under development, antivirals with the potential to limit virus transmission or block infection are also being explored. Plant production platforms are being used to generate vaccines and antiviral proteins inexpensively and at mass scale. The following review discusses the biology and origins of the current coronavirus pandemic, and describes some of the conventional, synthetic, and plant-based approaches to address the challenge that it presents to our way of life.

scholarly journals Erratum: Can magnetized turbulence set the mass scale of stars?

2020 ◽  
Vol 500 (1) ◽  
pp. 1125-1126
Author(s):  
Dávid Guszejnov ◽  
Michael Y Grudić ◽  
Philip F Hopkins ◽  
Stella S R Offner ◽  
Claude-André Faucher-Giguère
Keyword(s):  
Mass Scale

scholarly journals Using Social Media in Tourist Sentiment Analysis: A Case Study of Andalusia during the Covid-19 Pandemic

2021 ◽  
Vol 13 (7) ◽  
pp. 3836
Author(s):  
David Flores-Ruiz ◽  
Adolfo Elizondo-Salto ◽  
María de la O. Barroso-González
Keyword(s):  
Social Media ◽  
Sentiment Analysis ◽  
Cost Savings ◽  
Mass Scale ◽  
Tourism Sector ◽  
The Social ◽  
Analytical Tools ◽  
Media Data

This paper explores the role of social media in tourist sentiment analysis. To do this, it describes previous studies that have carried out tourist sentiment analysis using social media data, before analyzing changes in tourists’ sentiments and behaviors during the COVID-19 pandemic. In the case study, which focuses on Andalusia, the changes experienced by the tourism sector in the southern Spanish region as a result of the COVID-19 pandemic are assessed using the Andalusian Tourism Situation Survey (ECTA). This information is then compared with data obtained from a sentiment analysis based on the social network Twitter. On the basis of this comparative analysis, the paper concludes that it is possible to identify and classify tourists’ perceptions using sentiment analysis on a mass scale with the help of statistical software (RStudio and Knime). The sentiment analysis using Twitter data correlates with and is supplemented by information from the ECTA survey, with both analyses showing that tourists placed greater value on safety and preferred to travel individually to nearby, less crowded destinations since the pandemic began. Of the two analytical tools, sentiment analysis can be carried out on social media on a continuous basis and offers cost savings.

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