Exploring the Inert Doublet Model through the dijet plus missing transverse energy channel at the LHC

In this study of the Inert Doublet Model (IDM), we propose that the dijet + missing transverse energy channel at the Large Hadron Collider (LHC) will be an effective way of searching for the scalar particles of the IDM. This channel receives contributions from gauge boson fusion, and $t-$channel production, along with contributions from $H^+$ associated production. We perform the analysis including study of the Standard Model (SM) background with assumed systematic uncertainty, and optimise the selection criteria employing suitable cuts on the kinematic variables to maximise the signal significance. We find that with high luminosity option of the LHC, this channel has the potential to probe the IDM in the mass range of up to about 400 GeV, which is not accessible through other leptonic channels. In a scenario with light dark matter of mass about 65 GeV, charged Higgs in the mass range of around 200 GeV provides the best possibility with a signal significance of about $2\sigma$ at an integrated luminosity of about 3000 fb$^{-1}$.Comment: 16 pages, 3 figures, pdflatex; tables modified with new selection criteria to accommodate systematics. version to appear in PL

Intramuscular (infiltrating) Lipoma

Intraoral lipomas are benign and relatively rare tumors, although they occur with higher frequencies in other areas, most especially the back, abdomen and shoulders of adults. They have no gender predilection and predominantly affect the buccal mucosa. This paper describes a case of intramuscular (infiltrating) lipoma on the buccal mucosa of a 60-year old male which is relatively rare when compared to simple lipoma of buccal mucosa, and review pertinent literature

Developing a Scale to Measure the Trend in Millet Farming and Attitude of Farmers towards Millet Cultivation

In the recent years concern for millets has been on the rise. Sources had shown that there is an existence of valid linkage between millets and poverty reduction. A study was designed to develop a scale to measure the current trend in millet farming and changing attitude of farmers towards millet cultivation. The study was conducted in Tiruvannamalai and Vellore Districts of Tamil Nadu. Twenty statements reflecting the changing trends towards millet farming were generated. Likert’s method was employed in the scale construction and the final scale comprising 10 statements was standardized

Toward a theory of interstellar turbulence. II. Strong Alfvénic turbulence

We continue to investigate the possibility that interstellar turbulence is caused by nonlinear interactions among shear Alfvén waves. Here, as in Paper I, we restrict attention to the symmetric case where the oppositely directed waves carry equal energy fluxes. This precludes application to the solar wind in which the outward flux significantly exceeds the ingoing one. All our detailed calculations are carried out for an incompressible magnetized fluid. In incompressible magnetohydrodynamics (MHD), nonlinear interactions only occur between oppositely direct waves. Paper I contains a detailed derivation of the inertial range spectrum for the weak turbulence of shear Alfvén waves. As energy cascades to high perpendicular wavenumbers, interactions become so strong that the assumption of weakness is no longer valid. Here, we present a theory for the strong turbulence of shear Alfvén waves. It has the following main characteristics. (1) The inertial-range energy spectrum exhibits a critical balance beween linear wave periods and nonlinear turnover timescales. (2) The "eddies" are elongated in the direction of the field on small spatial scales; the parallel and perpendicular components of the wave vector, k_z and k_⊥, are related by k_z ≈ k^(2/3) _⊥L^(-1/3), where L is the outer scale of the turbulence. (3) The "one-dimensional" energy spectrum is proportional to k^(-5/3) _⊥-an anisotropic Kolmogorov energy spectrum. Shear Alfvénic turbulence mixes specific entropy as a passive contaminant. This gives rise to an electron density power spectrum whose form mimics the energy spectrum of the turbulence. Radio, wave scattering by these electron density fluctuations produces anisotropic scatter-broadened images. Damping by ion-neutral collisions restricts Alfvénic turbulence to highly ionized regions of the interstellar medium. We expect negligible generation of compressive MHD waves by shear Alfvén waves belonging to the critically balanced cascade. Viscous and collisionless damping are also unimportant in the interstellar medium (ISM). Our calculations support the general picture of interstellar turbulence advanced by Higdon

Opportunities and Challenges for Producing Solar Energy in Every Indian Home – A Case Study

The energy from the sun is abundant for essential requirements of every home. But due to technological reasons, it is not so easy to use the solar energy by converting it into electrical energy efficiently in all places. The important factors which would be affecting the efficiency of the solar panels (which is presently in the range of 20% to 30%,) are the cost involved in implementing the same at each house, lack of knowledge on investment return etc. The semiconductor technology for fabricating solar cells contributes to the performance. The impurities in the semiconductor technology, the heat from the sunlight are the negative factors for the performance. The variation in the angle of sunlight incident from morning to evening is also a negative factor for the performance. The climate condition of the environment like cloudy weather which limits the sunlight falling into the panel is another limiting factor. Considering all these limiting factors this paper proposes the different modes of installation of solar energy. This paper contains the normal power requirement of the house and methods for either partial or complete solar energy installation to the individual house

Toward a theory of interstellar turbulence. I: Weak Alfvénic turbulence

We study weak Alfvénic turbulence of an incompressible, magnetized fluid in some detail, with a view to developing a firm theoretical basis for the dynamics of small-scale turbulence in the interstellar medium. We prove that resonant 3-wave interactions are absent. We also show that the Iroshnikov-Kraichnan theory of incompressible, magnetohydrodynamic turbulence-which is widely accepted-describes weak 3-wave turbulence; consequently, it is incorrect. Physical arguments, as well as detailed calculations of the coupling coefficients are used to demonstrate that these interactions are empty. We then examine resonant 4-wave interactions, and show that the resonance relations forbid energy transport to small spatial scales along the direction of the mean magnetic field, for both the shear Alfvén wave and the pseudo Alfvén wave. The threedimensional inertial-range energy spectrum of 4-wave shear Alfvén turbulence guessed from physical arguments reads E(k_z,k_⊥) ~ V_Av_LL^(-1/3) k^(-10/3) _⊥, where V_A is the Alfvén speed, and v_L is the velocity difference across the outer scale L. Given this spectrum, the velocity difference across λ_⊥ ~ k^(-1) _⊥ is V_(λ⊥) ~ v_L(λ_⊥/L)^(2/3). We derive a kinetic equation, and prove that this energy spectrum is a stationary solution and that it implies a positive flux of energy in k-space, along directions perpendicular to the mean magnetic field. Using this energy spectrum, we deduce that 4-wave interactions strengthen as the energy cascades to small, perpendicular spatial scales; beyond an upper bound in perpendicular wavenumber, k_⊥L ~ (V_A/v_L)^(3/2), weak turbulence theory ceases to be valid. Energy excitation amplitudes must be very small for the 4-wave inertial-range to be substantial. When the excitation is strong, the width of the 4-wave inertial-range shrinks to zero. This seems likely to be the case in the interstellar medium. The physics of strong turbulence is explored in Paper II

Role of Gut Probionts in Enhancing Growth and Disease Resistance in Rainbow Trout (Oncorhynchus mykiss, Walbaum) Fingerlings

Seven out of 34 isolates were selected as putative probionts. These were mixed with an equal volume of a lipid oralizer and incorporated into compounded feed pellets to achieve a dose of 5 x 107 bacterial cells•g-1 of fish food and fed to Rainbow trout Oncorhynchus mykiss fingerlings (average weight 23.69 g) for a period of 25 days. Superior growth (SGR) ranging between 0.32 to 0.57 (P<0.05) as compared to 0.05 of the control group was obtained in fingerlings maintained on the probiotic incorporated diets. A comparatively lower growth of 0.12 was obtained in group F5 but this was still higher than that of the animals maintained on a feed devoid of probiotics. Feed efficiencies ranging between 0.36 for group F5 to 1.03 for group F7 (P< 0.05) as compared to 0.08 of the control group were obtained in animals fed the probiotic feeds