Probing new physics in B -> f_0(980) K decays

We study the hadronic decay modes $B^{\pm(0)} \to f_0(980) K^{\pm(0)}$, involving a scalar and a pseudoscalar meson in the final state. These decay modes are dominated by the loop induced $b \to s \bar q q(q=s,u,d)$ penguins along with a small $b \to u$ tree level transition (for $B^+ \to f_0 K^+$) and annihilation diagrams. Therefore, the standard model expectation of direct CP violation is negligibly small and the mixing induced CP violation parameter in the mode $B^0 \to f_0 K_S$ is expected to give the same value of $\sin(2\beta)$, as extracted from $B^0 \to J/\psi K_S$ but with opposite sign. Using the generalized factorization approach we find the direct CP violation in the decay mode $B^+ \to f_0 K^+$ to be of the order of few percent. We then study the effect of the R-parity violating supersymmetric model and show that the direct CP violating asymmetry in $B^+ \to f_0(980) K^+$ could be as large as $\sim 80$ and the mixing induced CP asymmetry in $B^0 \to f_0 K_S$ (i.e., $-S_{f_0 K_S}$) could deviate significantly from that of $\sin(2 \beta)_{J/\psi K_S}$.Comment: 18 pages, 5 figures, version to appear in Phys. Rev.

Weak phase information from the color suppressed B_d^0 -> D^{*0} K^{*0} modes

The decay channels $B_d^0 \to D^{*0} K^{*0}$ are investigated for extracting weak $CKM$ phase information. These channels are described by color-suppressed tree diagrams only and are free from penguin contributions. The branching ratios for these channels are found to be $\sim \cal O$ $(10^{-5} - 10^{-6})$ which can be measured at the currently running $B$ factories. The method presented here may be well-suited to determine the phase $\gamma$.Comment: 11 pages, revised extensively, version to appear in Phys. Rev.

Manufacturer's pricing strategies in cooperative and non-cooperative advertising supply chain under retail competition

This article studies the manufacturer's pricing strategy in a supply chain with a single manufacturer and two competing retailers. The manufacturer, as a Stackelberg leader specifies wholesale prices to two retailers who face advertisement dependent demand. Based on this gaming structure, two mathematical models are developed - the cooperative advertising model where manufacturer shares a fraction of retailers' advertising costs and the non-cooperative advertising model where manufacturer does not share any retailer's advertising expenses. The optimal strategies of the manufacturer and retailers are determined and a numerical example is taken to illustrate the theoretical results derived. We show that cooperative advertising policy is beneficial not only for the participating entities but also for the entire supply chain

IIT-H provides sanitisers for the masses

The Indian Institute of Technology Hyderabad (IIT-H) has been providing nearly 100 litres of hand sanitisers per day to the Sangareddy district administration to fight the spread of coronaviru

Statistical Mechanics of DNA Rupture: Theory and Simulations

We study the effects of the shear force on the rupture mechanism on a double stranded DNA. Motivated by recent experiments, we perform the atomistic simulations with explicit solvent to obtain the distributions of extension in hydrogen and covalent bonds below the rupture force. We obtain a significant difference between the atomistic simulations and the existing results in the iterature based on the coarse-grained models (theory and simulations). We discuss the possible reasons and improve the coarse-grained model by incorporating the consequences of semi-microscopic details of the nucleotides in its description. The distributions obtained by the modified model (simulations and theoretical) are qualitatively similar to the one obtained using atomistic simulations.Comment: 18 pages, 9 figures. Accepted in J. Chem. Phys. (2013). arXiv admin note: text overlap with arXiv:1104.305

Efek Penyakit Kronis terhadap Gangguan Mental Emosional

Hasil Riset Kesehatan Dasar tahun 2007 menunjukkan 11,6% penduduk Indonesia berumur 15 tahun ke atas mengalami gangguan mental emosional. Penelitian ini bertujuan untuk mengetahui efek penyakit kronis terhadap gangguan mental emosional. Desain penelitian ini adalah potong lintang mengggunakan data Riskesdas tahun 2007. Sebanyak 660.452 responden berusia di atas 15 tahun yang tidak mengalami gangguan jiwa dijadikan sampel. Gangguan mental emosional dinyatakan ada jika responden mem-punyai paling tidak enam dari 20 gangguan. Penyakit kronis seperti tuberculosis (TB) paru, hepatitis, jantung, diabetes, kanker, dan stroke diukur melalui wawancara yang didasarkan pada diagnosis petugas kesehatan. Hasil penelitian menunjukkan bahwa dari sepuluh penderita penyakit kronis, dua sampai lima penderita akan mengalami gangguan mental emosional. Analisis regresi logistik multivariat memperlihatkan bahwa risiko gangguan mental emosional semakin tinggi bersamaan dengan semakin banyak jumlah penyakit kronis yang diderita oleh responden. Responden yang menderita satu penyakit kronis berisiko 2,6 kali lebih besar untuk mengalami gangguan mental emosional, yang menderita dua penyakit kronis berisiko 4,6 kali, yang menderita tiga penyakit kronis atau lebih berisiko 11 kali. Kementerian Kesehatan disarankan untuk mengembangkan standar pelayanan penyakit kronis terkait dengan pengurangan dampak pada gangguan mental emosional dan dibentuknya tim bimbingan teknis pelayanan penyakit kronis.Basic Health Research (Riskesdas) year 2007 showed that 11.6 percent of Indonesia's population aged 15 years and above suffering from mental emotional disorder. This study aimed to examine the effects of chronic illness to the mental emotional disorders. A cross-sectional study was performed that used Riskesdas 2007 data. Atotal of 660,452 respondents aged 15 years and over who are mentally health become sample of this study. Mental emotional disorders exist if they have at least six of the 20 disorder. Chronic diseases such as pulmonary tuberculosis, hepatitis, heart disease, diabetes, cancer, and stroke were measured based on diagnosis by health pro-fesional. The results showed that out of ten respondents with chronic illness, aproximately two to five will suffering from mental emotional disorder. Multivariat logistic regression analysis shows that the risk of developing mental emotional disorders higher as more number of chronic illnesses suffered by the respondent. Respondents suffering from one chronic disease were 2.6 times greater risk for emotional mental disorder, suffering from two chronic dis-ease have risk 4.6 times, which had three or more chronic disease risk have risk 11 times. It is suggested that the Ministry of Health to develop a standard of care of chronic diseases associated with reducing impact on the mental emotional disorders and establishment of teams for technical guidance chronic disease care

Protein Stabilized and Sustained Deliverable Nanofiber Smart Scaffold for Multiphase Tissue Regeneration

Tissue engineering (TE) represent a paradigm shift in healthcare therapies and treatments by repairing, replacing, or regenerating damaged cells and tissues in human body. Chemical cues such as growth factors (GFs) and cytokines, and there successful delivery is the key components in TE with the ability to target specific tissue regeneration