scholarly journals U(N) GAUGED ${\mathcal N} = 2$ SUPERGRAVITY AND PARTIAL BREAKING OF LOCAL ${\mathcal N} = 2$ SUPERSYMMETRY

2006 ◽  
Vol 21 (30) ◽  
pp. 6191-6209 ◽  
Author(s):  
H. ITOYAMA ◽  
K. MARUYOSHI
Keyword(s):  
Mass Spectrum ◽  
Gauge Group ◽  
Quaternionic Manifold

We study a U (N) gauged [Formula: see text] supergravity model with one hypermultiplet parametrizing SO (4, 1)/ SO (4) quaternionic manifold. Local [Formula: see text] supersymmetry is known to be spontaneously broken to [Formula: see text] in the Higgs phase of U (1) graviphoton × U (1). Several properties are obtained of this model in the vacuum of unbroken SU (N) gauge group. In particular, we derive mass spectrum analogous to the rigid counterpart and put the entire resulting potential on this vacuum in the standard superpotential form of [Formula: see text] supergravity.

scholarly journals STUDY OF THE SU(3)c⊗SU(3)L⊗U(1)X MODEL WITH THE MINIMAL SCALAR SECTOR

2006 ◽  
Vol 21 (10) ◽  
pp. 2217-2235 ◽  
Author(s):  
DIEGO A. GUTIÉRREZ ◽  
WILLIAM A. PONCE ◽  
LUIS A. SÁNCHEZ
Keyword(s):  
Mass Spectrum ◽  
Gauge Group ◽  
Gauge Boson ◽  
Parity Violation ◽  
Discrete Symmetries ◽  
Linear Collider ◽  
Scalar Fields ◽  
Local Gauge ◽  
Fermion Fields ◽  
Scalar Sector

A study of the three-family local gauge group SU (3)c⊗ SU (3)L⊗ U (1)X with right-handed neutrinos is carried out. We use the minimal scalar sector able to break the symmetry in a proper way and produce, at the same time, masses for the fermion fields. We embed the structure into a simple gauge group and, by using experimental results from the CERN LEP, SLAC linear collider and atomic parity violation data, we also constrain relevant parameters for the new neutral and charged currents. We discuss the mass spectrum for the gauge boson sector and for the spin 1/2 particles. With the use of discrete symmetries and the introduction of extra scalar fields, a consistent mass spectrum could be constructed.

scholarly journals SPARTICLE MASS SPECTRUM IN GRAND UNIFIED THEORIES

2007 ◽  
Vol 22 (19) ◽  
pp. 3229-3259 ◽  
Author(s):  
B. ANANTHANARAYAN ◽  
P. N. PANDITA
Keyword(s):  
Mass Spectrum ◽  
Gauge Group ◽  
Gauge Groups ◽  
Grand Unified Theories ◽  
Renormalization Group Equations ◽  
The Standard Model ◽  
Unified Theories ◽  
The One ◽  
The Impact ◽  
Standard Model Gauge Group

We carry out a detailed analysis of sparticle mass spectrum in supersymmetric grand unified theories. We consider the spectroscopy of the squarks and sleptons in SU (5) and SO (10) grand unified theories, and show how the underlying supersymmetry breaking parameters of these theories can be determined from a measurement of different sparticle masses. This analysis is done analytically by integrating the one-loop renormalization group equations with appropriate boundary conditions implied by the underlying grand unified gauge group. We also consider the impact of nonuniversal gaugino masses on the sparticle spectrum, especially the neutralino and chargino masses which arise in supersymmetric grand unified theories with nonminimal gauge kinetic function. In particular, we study the interrelationships between the squark and slepton masses which arise in grand unified theories at the one-loop level, which can be used to distinguish between the different underlying gauge groups and their breaking pattern to the Standard Model gauge group. We also comment on the corrections that can affect these one-loop results.

scholarly journals Improved results for the mass spectrum of N = 1 supersymmetric SU(3) Yang-Mills theory

2018 ◽  
Vol 175 ◽  
pp. 08001 ◽  
Author(s):  
Sajid Ali ◽  
Georg Bergner ◽  
Henning Gerber ◽  
Pietro Giudice ◽  
Simon Kuberski ◽  
...  
Keyword(s):  
Mass Spectrum ◽  
Gauge Group ◽  
Preliminary Data ◽  
Gauge Coupling ◽  
Status Report ◽  
Yang Mills ◽  
Fermion Action

This talk summarizes the results of the DESY-Münster collaboration for N = 1 supersymmetric Yang-Mills theory with the gauge group SU(3). It is an updated status report with respect to our preliminary data presented at the last conference. In order to control the lattice artefacts we have now considered a clover improved fermion action and different values of the gauge coupling.

GAUGE GROUP AND PHASES OF SUPERFLUID 3He

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-50-C6-52
Author(s):  
V. L. Golo ◽  
M. I. Monastyrsky
Keyword(s):  
Gauge Group ◽  
Superfluid 3He

Phase space of mechanical systems with a gauge group

1991 ◽  
Vol 161 (2) ◽  
pp. 13-75 ◽  
Author(s):  
Lev V. Prokhorov ◽  
Sergei V. Shabanov
Keyword(s):  
Phase Space ◽  
Gauge Group ◽  
Mechanical Systems

scholarly journals Analysis of Butyl Butyrate Mass Spectrum

2018 ◽  
Vol 10 (1) ◽  
pp. 11
Author(s):  
Abdalla Mustafa Walwil
Keyword(s):  
Mass Spectrum ◽  
Proton Transfer ◽  
Educational Work ◽  
Butyl Butyrate ◽  
Chemistry Students ◽  
Double Proton Transfer

The aim of this educational work is targeting chemistry students and interested instructors. The presented work will analyze the mass spectrum of butyl butyrate (butyl butanoate). The analysis will concentrate on the mechanisms showing how the characteristic fragments are formed. The mechanisms discussed in this paper include α-cleavage, β-cleavage, McLafferty Rearrangements, first and second proton transfer, a double proton transfer. 

scholarly journals An event excess observed in the deeply bound region of the 12C (K−, p) missing-mass spectrum

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Yudai Ichikawa ◽  
Junko Yamagata-Sekihara ◽  
Jung Keun Ahn ◽  
Yuya Akazawa ◽  
Kanae Aoki ◽  
...  
Keyword(s):  
Mass Spectrum ◽  
Binding Energy ◽  
Decay Channel ◽  
Peak Shift ◽  
Bound State ◽  
Elastic Peak ◽  
Missing Mass ◽  
Decay Modes ◽  
Kaon Momentum ◽  
First Time

Abstract We have measured, for the first time, the inclusive missing-mass spectrum of the $^{12}$C$(K^-, p)$ reaction at an incident kaon momentum of 1.8 GeV/$c$ at the J-PARC K1.8 beamline. We observed a prominent quasi-elastic peak ($K^-p \rightarrow K^-p$) in this spectrum. In the quasi-elastic peak region, the effect of secondary interaction is apparently observed as a peak shift, and the peak exhibits a tail in the bound region. We compared the spectrum with a theoretical calculation based on the Green’s function method by assuming different values of the parameters for the $\bar{K}$–nucleus optical potential. We found that the spectrum shape in the binding-energy region $-300 \, \text{MeV} < B_{K} < 40$ MeV is best reproduced with the potential depths $V_0 = -80$ MeV (real part) and $W_0 = -40$ MeV (imaginary part). On the other hand, we observed a significant event excess in the deeply bound region around $B_{K} \sim 100$ MeV, where the major decay channel of $K^- NN \to \pi\Sigma N$ is energetically closed, and the non-mesonic decay modes ($K^- NN \to \Lambda N$ and $\Sigma N$) should mainly contribute. The enhancement is fitted well by a Breit–Wigner function with a kaon-binding energy of 90 MeV and width 100 MeV. A possible interpretation is a deeply bound state of a $Y^{*}$-nucleus system.

scholarly journals The prevalence of underweight in 9–10-year-old schoolchildren in Liverpool: 1998–2006

2009 ◽  
Vol 12 (7) ◽  
pp. 953-956 ◽  
Author(s):  
Lynne M Boddy ◽  
Allan F Hackett ◽  
Gareth Stratton
Keyword(s):  
Mass Spectrum ◽  
Body Mass ◽  
The Body ◽  
Fitness Testing ◽  
Policy Makers ◽  
Substantial Problem ◽  
Prevalence Of Obesity ◽  
Grade 3 ◽  
The City ◽  
Over Time

AbstractObjectiveTo estimate the prevalence of underweight between 1998 and 2006 in Liverpool schoolchildren aged 9–10 years using recently published underweight cut-off points.Design and settingStature and body mass data collected at the LiverpoolSportsLinx project’s fitness testing sessions were used to calculate BMI.SubjectsData were available on 26 782 (n13 637 boys, 13 145 girls) participants.ResultsOverall underweight declined in boys from 10·3 % in 1998–1999 to 6·9 % in 2005–2006, and all sub-classifications of underweight declined, in particular grade 3 underweight, with the most recent prevalence being 0·1 %. In girls, the prevalence of underweight declined from 10·8 % in 1998–1999 to 7·5 % in 2005–2006. The prevalence of all grades of underweight was higher in girls than in boys. Underweight showed a fluctuating pattern across all grades over time for boys and girls, and overall prevalence in 2005–2006 represents over 200 children across the city.ConclusionsUnderweight may have reduced slightly from baseline, but remains a substantial problem in Liverpool, with the prevalence of overall underweight being relatively similar to the prevalence of obesity. The present study highlights the requirement for policy makers and funders to consider both ends of the body mass spectrum when fixing priorities in child health.

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