Status of ψ\psi (3686), ψ\psi (4040), ψ\psi (4160), Y (4260), ψ\psi (4415) and X (4630) charmonia like states

We examine the status of charmonia like states by looking into the behaviour of the energy level differences and regularity in the behaviour of the leptonic decay widths of the excited charmonia states. The spectroscopic states are studied using a phenomenological Martin-like confinement potential and their radial wave functions are employed to compute the di-leptonic decay widths. Their deviations from the expected behaviour provide a clue to consider them as admixtures of the nearby S and D states. The present analysis strongly favour \\backslash$psi \$ (3686) as admixture of $c \bar{c}$ (2S) and $c \bar{c}$g (4.1 GeV) hybrid, \\backslash$psi \$ (4040) and \$$\backslash$psi \$ (4160) as admixture states of charmonia (3S, 3D) states with mixing angle \$$\backslash$theta \$ = 11$^\circ$and 45$^\circ$respectively. We identify Y (4260) as a pure$c \bar{c}$(4S) state whose leptonic decay is predicted as 0.65 keV. While X(4630) is closer to the$c \bar{c}$(6S) state. The status of \$$\backslash$psi \$ (4415) is still not clear as it does not fit to be pure or admixture state

Properties of Light Flavour Baryons in Hypercentral quark model

The light flavour baryons are studied within the quark model using the hyper central description of the three-body system. The confinement potential is assumed as hypercentral coulomb plus power potential ($hCPP_\nu$) with power index $\nu$. The masses and magnetic moments of light flavour baryons are computed for different power index, $\nu$ starting from 0.5 to 1.5. The predicted masses and magnetic moments are found to attain a saturated value with respect to variation in $\nu$ beyond the power index $\nu>$ 1.0. Further we computed transition magnetic moments and radiative decay width of light flavour baryons. The results are in good agreement with known experimental as well as other theoretical models.Comment: Accepted in Pramana J. of Physic

Semileptonic transition of

The semileptonic transition of $$\varLambda _b$$ baryon is studied using the Hypercentral constituent quark model. The six-dimensional hyperradial $$Schr\ddot{o}dinger$$ equation is solved in the variational approach to get masses and wavefunctions of heavy baryons. The matrix elements of weak decay are written in terms of the overlap integrals of the baryon wave function. The Isgur-Wise function is determined to calculate exclusive semileptonic decay $$\varLambda _b$$$$\rightarrow$$$$\varLambda _c$$$$\ell$$$${\bar{\nu }}$$. The calculated decay rate and the branching ratio of $$\varLambda _b$$ baryon are consistent with other theoretical predictions and with the available experimental observations

Excited state mass spectra of doubly heavy baryons

We discuss the mass spectrum of $$\Omega$$ baryon with two heavy quarks and one light quark (ccs, bbs, and bcs). The main goal of the paper is to calculate the ground state masses and after that, the positive and negative parity excited states masses are also obtained within a hypercentral constituent quark model, using Coulomb plus linear potential framework. We also added a first order correction to the potential. The mass spectra up to 5S for radial excited states and 1P–5P, 1D–4D, and 1F–2F states for orbital excited states are computed for $$\Omega _{cc}$$, $$\Omega _{bb}$$, and $$\Omega _{bc}$$ baryons. Our obtained results are compared with other theoretical predictions, which could be a useful complementary tool for the interpretation of experimentally unknown heavy baryon spectra. The Regge trajectory is constructed in both the ($$n_r$$, $$M^{2}$$) and the (J, $$M^{2}$$) planes for $$\Omega _{cc}$$, $$\Omega _{bb}$$, and $$\Omega _{bc}$$ baryons and their slopes and intercepts are also determined. Magnetic moments of doubly heavy $$\Omega '$$s are also calculated

Excited state mass spectra of singly charmed baryons

Mass spectra of excited states of the singly charmed baryons are calculated using the hypercentral description of the three-body system. The baryons consist of a charm quark and light quarks (u, d and s) are studied in the framework of QCD motivated constituent quark model. The form of the confinement potential is hyper-Coloumb plus power potential with potential index $\nu$, varying from 0.5 to 2.0. The first-order correction to the confinement potential is also incorporated in this approach. The radial as well as orbital excited state masses of $\Sigma_{c}^{++}$, $\Sigma_{c}^{+}$, $\Sigma_{c}^{0}$, $\Xi_{c}^{+}$, $\Xi_{c}^{0}$, $\Lambda_{c}^{+}$, $\Omega_{c}^{0}$ baryons, are reported in this paper. We have incorporated spin-spin, spin-orbit and tensor interactions perturbatively in the present study. The semi-electronic decay of $\Omega_{c}$ and $\Xi_{c}$ are also calculated using the spectroscopic parameters of these baryons. The computed results are compared with other theoretical predictions as well as with the available experimental observations. We also construct the Regge trajectory in ($n_{r}, M^{2}$) and ($J, M^{2}$) planes for these baryons

A STUDY ON PREVALENCE OF OBESITY AMONG COLLEGE GOING GIRLS IN AGRA DISTRICT OF U.P.

Research question: What is the prevalence of obesity among urban college going girls of Agra in the age group of l8-24 years? Objectives: 1. To study the anthropometric characteristics of study subjects. 2. To study the magnitude of obesity among them. 3. To compare the prevalence of obesity by WHO & Revised Indian Guidelines. Study design: cross sectional study. Setting and participants: Nonprofessional colleges of Agra city and college going girls of l8-24 years. Study period: July to December2008. Sample size: 400 college going girls of I5-24 years. Study variable: Height, Weight, Waist circumference, Hip circumference. Results : According to WHO, 2000 guideline, the prevalence of overweight and obesity was 18.5% and 4.5% respectively. 45.5% of the subjects had normal weight and 31.5% were underweight. According to revised Indian guideline, surprisingly, 42.5% were classified as overweight/obese amongst which 23% were obese with remaining 19.5% overweight and 5 7.5% of subjects were either classified as normal (26%) or below normal (31.5%). Conclusion : Higher prevalence of obesity especially by Indian guidelines, calls for the prevention and control of this problem with prime attention