S-D mixing and ψ(3770)\psi(3770) production in e+e−e^+e^- annihilation and B decay and its radiative transitions

The large decay rate observed by Belle for $B^+\to\psi(3770)K^+$, which is comparable to $B^+\to\psi(3686)K^+$, might indicate either an unexpectedly large S-D mixing angle $|\theta|\approx 40^o$ or the leading role of the color-octet mechanism in D-wave charmonium production in B decay. By calculating the production rate of $\psi(3770)$ in the continuum $e^+e^-$ annihilation at $\sqrt{s}=10.6$ GeV with these two possible approaches (i.e. the large S-D mixing and the color-octet mechanism), we show that the measurement for this process at Belle and BaBar may provide a clear cut clarification for the two approaches. In addition, the radiative E1 transition ratio $\Gamma(\psi(3770)\to \gamma\chi_{c2})/\Gamma(\psi(3770)\to \gamma\chi_{c1})$ may dramatically change from $\sim$ 0.04 (for $\theta\approx 0^o$) to $\sim$ 200 (for $\theta\approx -40^o$) due to the large S-D interference effect, thus the E1 transition measurement of $\psi(3770)$ at BES and CLEO-c will also be very useful in clarifying this issue.Comment: final version to appear in Phys.Rev.D, discussion on uncertainties associated with the color-octet matrix elements is added, 16 pages, 2 figure

Study On Recovery And Utilization Of Valuable Components From Glycerol Residue

The Malaysian palm-based oleochemicals industry is growing rapidly and producing an increasing array of products like fatty acid methyl esters, fatty alcohols and glycerine. In the production of these oleochemicals, by-products are produced in which many of them are potentially useful. One of the by-products is glycerol residue which is generated by a glycerol refining plant (the glycerine source is from methanolysis of palm kernel oil). Glycerol residue is a waste under Schedule Waste SI8I of the Environmental Regulations in Malaysia. Currently, this waste is disposed off in landfills with the cost of about RM700.00/tonne. This research was therefore undertaken to characterize the glycerol residue, and to recover and utilize its valuable components. It was found that thirteen batches of glycerol residue, GRI to GR13, showed variation in the contents of glycerol, ash, moisture and matter organic non-glycerol (MONG). Salt (63.7%), glycerol (19.7%) and MONG (12.9%, mainly as soap) were the three mai

Anomalous gauge couplings of the Higgs boson at the CERN LHC: Semileptonic mode in WW scatterings

We make a full tree level study of the signatures of anomalous gauge couplings of the Higgs boson at the CERN LHC via the semileptonic decay mode in WW scatterings. Both signals and backgrounds are studied at the hadron level for the Higgs mass in the range 115 GeV to 200 GeV. We carefully impose suitable kinematical cuts for suppressing the backgrounds. To the same sensitivity as in the pure leptonic mode, our result shows that the semileptonic mode can reduce the required integrated luminosity by a factor of 3. If the anomalous couplings in nature are actually larger than the sensitivity bounds shown in the text, the experiment can start the test for an integrated luminosity of 50 inverse fb.Comment: PACS numbers updated. Version published in Phys.Rev.D79,055010(2009

Socioeconomic and lifestyle determinants of blood glucose screening in Malaysia

Background: The increase in prevalence of diabetes is a serious public health issue.It is well documented that use of blood glucose screening can help to reduce the risk of developing diabetes. Objectives: To examine the socioeconomic and lifestyle factors associated with use of blood glucose screening among Malaysian adults. Methods: Nationally representative data from 2,415 survey respondents was used. The survey was a cross sectional population-based study previously conducted by the Ministry of Health Malaysia. A logistic regression model was developed to estimate the likelihood of using blood glucose screening.Results: Age, marital status, ethnicity, income, smoking, and body mass index were significantly associated with use of blood glucose screening.In particular, older individuals, married individuals, Malays, higher income earners, non-smokers, and being obese, overweight or of normal weight were correlated with a higher likelihood of using blood glucose screening. Conclusions: It is important to acquire a better knowledge of the factors that can influence the decision of people to adopt preventive measures. Having better information regarding which groups of individuals use or do not use blood glucose screening can assist governments in developing appropriate intervention programs