The X(3872) at the Tevatron

I report results on the X(3872) from the Tevatron. Mass and other properties have been studied, with a focus on new results on the dipion mass spectrum in X -> J/PsiPi^+Pi^- decays. Dipions favor interpreting the decay as J/PsiRho, implying even C-parity for the X. Modeling uncertainties do not allow distinguishing between S- and P-wave decays of the J/PsiRho mode. Effects of Rho-Omega interference in X decay are also introduced.Comment: Contribution to PANIC05, Santa Fe, 24-28 October 2005 (4 pages, 6 plots

Origin of layer dependence in band structures of two-dimensional materials

We study the origin of layer dependence in band structures of two-dimensional materials. We find that the layer dependence, at the density functional theory (DFT) level, is a result of quantum confinement and the non-linearity of the exchange-correlation functional. We use this to develop an efficient scheme for performing DFT and GW calculations of multilayer systems. We show that the DFT and quasiparticle band structures of a multilayer system can be derived from a single calculation on a monolayer of the material. We test this scheme on multilayers of MoS$_2$, graphene and phosphorene. This new scheme yields results in excellent agreement with the standard methods at a fraction of the computation cost. This helps overcome the challenge of performing fully converged GW calculations on multilayers of 2D materials, particularly in the case of transition metal dichalcogenides which involve very stringent convergence parameters

Siparti 3-S, Triple Helix, and Social Capital in Strengthening Local Competitive Industries in Indonesia

Siparti 3-S, triple helix (TH), and social capital (SC), are perceived relevance and appropriate paradigms in the context of strengthening local competitive industry products. This article explains analytically the notion of employing these paradigms in designing, constructing, and delivering small industry em­powerment programs in Indonesia. Synthesis of Siparti 3-S generated from the author’s view and experience as a researcher and consultant on the development of small industry in East Java. Critical analysis of TH based on the orientation and goals of triple helix model (THM). The existence and roles of SC perceived as the glue and lubricant as well in the connection of Siparti 3-S and TH. The plausibility of Siparti 3-S, TH, and SC as appropriate paradigms in reaching-in and reaching-out to strengthen small industry reflected upon one of the author’s study on the success story of ASPILOW (Asosiasi Pengusaha Industri Logam Waru, Association of Waru Metal Industry Firms), Sidoarjo, East Java. Keywords: Siparti 3-S, triple helix, social capital, SILOW, ASPILO