273 research outputs found
NMSGUT emergence and Trans-Unification RG flows
Consistency of trans-unification RG evolution is used to discuss the domain
of definition of the New Minimal Supersymmetric SO(10) GUT (NMSGUT). We compute
the 1-loop RGE functions, simplifying generic formulae using
constraints of gauge invariance and superpotential structure. We also calculate
the 2 loop contributions to the gauge coupling and gaugino mass and indicate
how to get full 2 loop results for all couplings. Our method overcomes
combinatorial barriers that frustrate computer algebra based attempts to
calculate SO(10) functions involving large irreps. Use of the RGEs
identifies a perturbative domain , where is the
\emph{scale of emergence} where the NMSGUT, with GUT compatible soft
supersymmetry breaking terms emerges from the strong UV dynamics associated
with the Landau poles in gauge and Yukawa couplings. Due to the strength of the
RG flows the Landau poles for gauge and Yukawa couplings lie near a cutoff
scale for the perturbative dynamics of the NMSGUT which just above
. SO(10) RG flows into the IR are shown to facilitate small gaugino masses
and generation of negative Non Universal Higgs masses squared needed by
realistic NMSGUT fits of low energy data. Running the simple canonical theory
emergent at through down to the electroweak scale enables tests of
candidate scenarios such as supergravity based NMSGUT with canonical kinetic
terms and NMSGUT based dynamical Yukawa unification.Comment: 36 pages, 1 Figure, 4 Tables, 77 equations, 42 references, RevTeX4
PDFLateX. Version published in Phys. Rev.
Baryon Stability on the Higgs Dissolution Edge : Threshold corrections and suppression of Baryon violation in the NMSGUT
Superheavy threshold corrections to the matching condition between matter
Yukawa couplings of the effective Minimal Supersymmetric Standard Model (MSSM)
and the New Minimal Supersymmetric (SO(10)) GUT(NMSGUT) provide a novel and
generic mechanism for reducing the long standing and generically problematic
operator dimension 5 Baryon decay rates. In suitable regions of the parameter
space strong wave function renormalization of the effective MSSM Higgs doublets
due to the large number of heavy fields can take the wave function
renormalization of the MSSM Higgs field close to the dissolution value
(). Rescaling to canonical kinetic terms lowers the
SO(10) Yukawas required to match the MSSM fermion data. Since the same Yukawas
determine the dimension 5 B violation operator coefficients, the associated
rates can be suppressed to levels compatible with current limits. Including
these threshold effects also relaxes the constraint operative between plet generated tree
level MSSM matter fermion Yukawas . We exhibit accurate fits of the MSSM
fermion mass-mixing data in terms of NMSGUT superpotential couplings and 5
independent soft Susy breaking parameters specified at GeV with
the claimed suppression of Baryon decay rates. As before, our s-spectra are of
the mini split supersymmetry type with large TeV, light gauginos and normal s-hierarchy. Large and soft
masses allow significant deviation from the canonical GUT gaugino mass ratios
and ensure vacuum safety. Even without optimization, prominent candidates for
BSM discovery such as the muon magnetic anomaly, and
Lepto-genesis CP violation emerge in the preferred ball park.Comment: PdfLatex. 50 pages. Version accepted for publication in Nuclear
Phys.B(2014). Available online at
http://dx.doi.org/10.1016/j.nuclphysb.2014.03.003. arXiv admin note:
substantial text overlap with arXiv:1107.296
Studies on Genetic Variability and Heritability in Bulb Onion (Allium cepa L.) in North-Western Plains of India
A study on genetic variability, heritability and genetic advance was carried out in bulb onion for 13 traits using 43 accessions. The range of variation was highest for bolting (0 to 51.30%), followed by days to maturity (110 to 155 days) and bulb weight (44 to 87.03g). Values for phenotypic coefficient of variation were higher than corresponding genotypic coefficient of variation for all the characters studied. Higher heritability estimates were obtained for plant height, leaf length, days to maturity, number of scales per bulb, polar diameter, equatorial diameter and TSS. Bolting, bulb weight, neck-to-bulb ratio and the lachrymatory factor showed moderate heritability, while, lowest values were observed for leaf girth and number of leaves per plant. Genetic advance varied from 0.06 to 21.82 for leaf girth and bolting, respectively
Evaluation of the effects of different water demand scenarios on downstream water availability: The case of Thuli river basin
Prevalence of Paramphistomum cervi in different sheep breeds of Balochistan (Pakistan)
The prevalence of Paramphistomum cervi infestation in Balochi, Babrik and Harnai sheep breeds from Balochistan (Pakistan) was studied during September to December 2010. For this purpose, rumen of slaughtered sheep in Quetta City and surroundings (n=1,200) were examined. Results showed significant differences (
Finite element analysis of material flow patterns in friction stir spot welding of AL 6082-T6 using different process parameters and tool geometries
Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.From application view point simple looking process of Friction Stir Spot Welding (FSSW) works on a complex thermo-mechanical mechanism. The strong inter-dependency of parameters responsible for heat generation and material flow like friction co-efficient, vertical force, rotational speed, tool geometry & dimensions, shear yield strength, conductivity and heat capacity etc. makes it a challenge to investigate the mechanism for FSSW process. At the start of the process, rigid solid behavior of work piece dominates. As the process proceeds, the rise in temperature due to frictional and deformation heat inputs, softens the material and it is assumed that the material transfer under the tool behaves like that of a fluid. In this part of on going research for FSW at IWS, a thermo-fluid coupled, three dimensional and transient model for quasi–steady state condition during FSSW process, is developed. The effects of different process parameters like tool geometries, rotational speed and dwell time on material flow patterns are studied experimentally and modeled, using general purpose FE software package MSC Marc®. The predicted results of the Finite Element study in terms of fluid velocity profile, nugget size and shape are compared with experimental observations carried out at IWS laboratories of TU Graz.cs201
Insight into Two ABC Transporter Families Involved in Lantibiotic Resistance
Antimicrobial peptides, which contain (methyl)-lanthionine-rings are called lantibiotics. They are produced by several Gram-positive bacteria and are mainly active against these bacteria. Although these are highly potent antimicrobials, some human pathogenic bacteria express specific ABC transporters that confer resistance and counteract their antimicrobial activity. Two distinct ABC transporter families are known to be involved in this process. These are the Cpr- and Bce-type ABC transporter families, named after their involvement in cationic peptide resistance in Clostridium difficile, and bacitracin efflux in Bacillus subtilis, respectively. Both resistance systems differentiate to each other in terms of the proteins involved. Here, we summarize the current knowledge and describe the divergence as well as the common features present in both the systems to confer lantibiotic resistance
Microscopic Study of Low Spin Yrast Levels in Even-Even Krypton Isotopes in the Variation After Projection Approach
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