Lepton Asymmetries in Heavy Baryon Decays of Λb→Λl+l−\Lambda_b\to\Lambda l^+l^-

We study the dilepton forward-backward and the longitudinal, normal and transverse lepton polarization asymmetries in the heavy baryon decays of $\Lambda_b\to\Lambda l^+l^-$. We show that the asymmetries have a less dependence on the non-perturbative QCD effects. In the standard model, we find that the integrated forward-backward asymmetries (FBAs) and three components of the polarizations in the QCD sum rule approach (pole model) are $-0.13\ (-0.12)$and$(58.3,-9.4,-0.07)%$($(58.3,-12.6,-0.07)%$) for$\Lambda_b\to\Lambda\mu^+\mu^-$and$-0.04 (-0.03)$and$(10.9,-10.0,-0.39)%$($(10.9,-0.2,-0.34)%$) for$\Lambda_b\to\Lambda\tau^+\tau^-$, respectively.Comment: 10 pages, 9 figures, revised versio

Additions to the moss flora of Endau Rompin National Park, Johore State, peninsular Malaysia

In a recent survey of the Endau Rompin National Park (ERNP) in Johore State, 81 species and 4 varieties of mosses were documented. This increases the previous count from 62 species and 3 varieties of mosses in ERNP to 111 species and 5 varieties in total. Of these, 30 species are new records for Johore State. Rhaphidostichum bunodicarpum and Trichosteleum stigmosum are two species new to Peninsular Malaysia. Thuidium assimile is a new record for West Malesia. A new combination, Papillidiopsis aquaticum (Dix.) Boon-Chuan Ho & B.C. Tan is proposed. In terms of species composition, the pan-tropical families of Calymperaceae, Fissidentaceae, Leucobryaceae and Sematophyllaceae predominate the moss flora of ERNP

Tuning the Tadpole Improved Clover Wilson Action on Coarse Anisotropic Lattices

Wilson quark action, with tadpole improved clover term added, is studied on coarse anisotropic lattices. The bare velocity of light parameter in this action is determined non-perturbatively using the pseudo-scalar and vector meson dispersion relations for various values of the gauge coupling $\beta$ and bare quark mass parameter $\kappa$.Comment: 7 pages LateX, typeset with elsart.cls, 1 figure, 5 tables (4 more tables added), 2 references adde