195 research outputs found
Comparative analysis of the decay in the SM, SUSY and RS model with custodial protection
We comparatively analyze the rare channel in standard model, supersymmetry and Randall-Sundrum model with
custodial protection (RS). Using the parametrization of the matrix elements
entering the low energy effective Hamiltonian in terms of form factors, we
calculate the corresponding differential decay width and lepton
forward-backward asymmetry in these models. We compare the results obtained
with the most recent data from LHCb as well as lattice QCD results on the
considered quantities. It is obtained that the standard model, with the form
factors calculated in light-cone QCD sum rules, can not reproduce some
experimental data on the physical quantities under consideration but the
supersymmetry can do it. The RS model predictions are roughly the same as
the standard model and there are no considerable differences between the
predictions of these two models. In the case of differential decay rate, the
data in the range GeVc GeVc can not be
described by any of the considered models.Comment: 28 Pages, 12 Figures and 3 Table
Analysis of the semileptonic transition in topcolor-assisted technicolor (TC2) model
We comparatively analyze the flavor changing neutral current process of the
in the standard model as well as
topcolor-assisted technicolor model using the form factors calculated via light
cone QCD sum rules in full theory. In particular, we calculate the decay width,
branching ratio and lepton forward-backward asymmetry related to this decay
channel. We compare the results of the topcolor-assisted technicolor model with
those of the standard model and debate how the results of the topcolor-assisted
technicolor model depart from the standard model predictions. We also compare
our results on the differential branching ratio with recent experimental data
provided by CDF and LHCb Collaborations.Comment: 29 Pages, 16 Figures and 8 Table
Comparative analysis of the semileptonic transition in SM and different SUSY scenarios using form factors from full QCD
We work out the semileptonic
transition in standard as well as different supersymmetric models. In
particular, considering the parametrization of the matrix elements entered the
low energy effective Hamiltonian in terms of form factors in full QCD, we
calculate the amplitude and differential decay rate responsible for this decay
channel in supersymmetric models. We then use the form factors calculated via
light cone QCD sum rules in full theory to analyze the differential branching
ratio and lepton forward-backward asymmetry of this decay channel in different
supersymmetric models and compare the obtained results with those of the
standard model. We also discuss how the results of different supersymmetric
models deviate from the standard model predictions and which SUSY scenarios are
favored.Comment: 23 Pages, 8 Figures and 11 Table
Constraint on compactification scale via recently observed baryonic channel and analysis of the transition in SM and UED scenario
We obtain a lower limit on the compactification scale of extra dimension via
comparison of the branching ratio in the baryonic decay channel recently measured by CDF collaboration and our
previous theoretical study. We also use the newly available form factors
calculated via light cone QCD sum rules in full theory to analyze the flavour
changing neutral current process of the in universal extra dimension scenario in the presence of a single extra
compact dimension. We calculate various physical quantities like branching
ratio, forward-backward asymmetry, baryon polarizations and double lepton
polarization asymmetries defining the decay channel under consideration. We
also compare the obtained predictions with those of the standard model.Comment: 32 Pages, 27 Figures and one Tabl
Border skirmishes and the question of belonging: An authoethnographic account of everyday exclusion in multicultural society
Transnational migration has transformed most European countries, making the problem of how to 'integrate' an increasingly popular topic in public debates and social policy. It is assumed that as long as the newcomer learns the language, adapts to the local customs and finds work, s/he will be integrated and welcomed with open arms as a full-fledged member of society. Based on an autoethnography of our experiences as US-born, long-term and fully 'integrated' residents of the Netherlands, one of Europe's most multicultural societies, we have explored some of the subtle, well-intentioned practices of distancing and exclusion that are part of the fabric of everyday life. We will show how, contrary to the official discourse of integration, 'Dutch-ness' as a white/ethnic national identity is continuously constructed as a 'we', which excludes all 'others'. And, indeed, we have discovered that, paradoxically, the closer the 'other' comes to being completely assimilated into Dutch society, the more the symbolic borders of national belonging may need to be policed and tightened. © The Author(s) 2011
A kinetic and thermodynamic investigation into the removal of methyl orange from wastewater utilizing fly ash in different process configurations
The removal of methyl orange using coal fly ash, which is a widely available low-cost adsorbent, has been investigated. Adsorption studies for dye removal were conducted using various configurations such as batch, column and heap adsorption at various temperatures and adsorbent dosages at neutral pH. The Langmuir, Freundlich and Tempkin isotherm models were used to describe the process. The Freundlich model best represented the adsorption. Kinetic studies show the adsorption followed pseudo-second-order kinetics. Thermodynamic studies show that the process is spontaneous, endothermic and random. Column configuration was found to be the most efficient with a dye removal percentage of 99.95%, followed by heap adsorption at 99.25% removal and lastly batch configuration with 96.68% removal. Economic analysis shows that column operation would be the most effective for practical implementation
Molecular Effects of Doxycycline Treatment on Pterygium as Revealed by Massive Transcriptome Sequencing
Pterygium is a lesion of the eye surface which involves cell proliferation, migration, angiogenesis, fibrosis, and extracellular matrix remodelling. Surgery is the only approved method to treat this disorder, but high recurrence rates are common. Recently, it has been shown in a mouse model that treatment with doxycycline resulted in reduction of the pterygium lesions. Here we study the mechanism(s) of action by which doxycycline achieves these results, using massive sequencing techniques. Surgically removed pterygia from 10 consecutive patients were set in short term culture and exposed to 0 (control), 50, 200, and 500 µg/ml doxycycline for 24 h, their mRNA was purified, reverse transcribed and sequenced through Illumina’s massive sequencing protocols. Acquired data were subjected to quantile normalization and analyzed using cytoscape plugin software to explore the pathways involved. False discovery rate (FDR) methods were used to identify 332 genes which modified their expression in a dose-dependent manner upon exposure to doxycycline. The more represented cellular pathways included all mitochondrial genes, the endoplasmic reticulum stress response, integrins and extracellular matrix components, and growth factors. A high correlation was obtained when comparing ultrasequencing data with qRT-PCR and ELISA results
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