Lepton Energy Asymmetry and Precision SUSY study at Hadron Colliders

We study the distribution of lepton pairs from the second lightest neutralino decay \tilde{\chi}^0_2-->\tilde{l}l followed by \tilde{l}\to \tilde{\chi}^0_1 l. The distribution of the ratio of lepton transverse momenta A_T shows peak structure if m_{ll}< m^{max}_{ll}/2 is required. The peak position A_T^{peak} is described by a simple function of the ino and slepton masses in the m_{ll}\sim 0 limit. When a moderate m_{ll} cut is applied, A_T^{peak} depends on the \tilde{\chi}^0_2 velocity distribution, but the dependence would be corrected by studying the lepton P_T distribution. A_T^{peak} and the edge of m_{ll} distributions are used to determine the mass parameters involved in the decay for parameters of interest to LHC experiments. For some cases the ino and slepton masses may be determined within 10% by the lepton distribution only independent of model assumptions. Correct combinations of A_{T}^{peak} and m_{ll}^{edge} would be identified even if different \tilde{\chi}^0_2 decay chains are co-existing. The analysis could be extended to the Tevatron energy scale or other cascade decays.Comment: 31 pages, 15 figure

Human Capital, Migration, and Regional Income Convergence in the Philippines

We test the convergence of real income using the Philippine regional data over the period of 1980-2000. Differences in real income across regions were large and persistent. Though regional incomes did not converge towards a common level (absolute convergence), they did converge controlling for human capital measured by average schooling years (conditional convergence). Human capital and its accumulation contributed to economic growth. People with higher human capital were more likely to move across regions. In addition, people tended to move from poor to rich regions. The absence in the absolute convergence may be due to the fact that higher human capital tended to move from poor to rich regions.

Form Explanation in Modification of Listening Input in L2 Vocabulary Learning

The effectiveness of vocabulary explanation as modifications of listening input - explicit (EE) and implicit (IE) - were investigated in contrast to unmodified (baseline, BL) condition. One hundred and nine university students from Japan listened to two texts, which included different vocabulary elaborations for 12 items. Students listened three times to each text. After each listening, they indicatec the meanings of the items. Four weeks later, a delayed posttest was administered. Positive effects of multiple listenings were found in vocabulary learning from listening input. As hypothesized, the EE condition resulted in significant superiority over the other two on the immediate posttests. However, IE was not significantly better than the BL. The findings suggested that the IE mostly remained unnoticed during the listening. On the delayed posttest, the score of EE dropped and there was no significant difference among the three conditions, though all conditions resulted in a significant increase from the pretest

Does Self-esteem Moderate the Effect of Mortality Salience on Worldview Defense in Japan?

According to terror management theory (TMT), people respond to a reminder of their inevitable death (mortality salience, MS) by defending their cultural worldview (MS hypothesis). Although the MS hypothesis has been supported in numerous studies conducted in Western cultures, it is not always supported in interdependent cultures such as Japan. Considering that TMT argues that self-esteem can also buffer death anxiety and moderate the effect of MS, careful examination of this effect is also needed. The present study examined whether such moderating effect of self-esteem would be found among Japanese through three studies. Results revealed that the moderating effect of self-esteem on the relationship between MS and worldview defense was not found. The results suggest that self-esteem does not function as a death anxiety buff er in Japan.This work was supported by special funding for the promotion of internationalization of research activities by the Japanese Group Dynamic Association

Crystal interpretation of a formula on the branching rule of types Bn, Cn, and Dn

The branching coefficients of the tensor product of finite-dimensional irreducible Uq(g)-modules, where g is so(2n + 1, C) (Bn-type), sp(2n,C) (Cn-type), and so(2n,C) (Dn-type), are expressed in terms of Littlewood-Richardson (LR) coefficients in the stable region. We give an interpretation of this relation by Kashiwara’s crystal theory by providing an explicit surjection from the LR crystal of type Cn to the disjoint union of Cartesian product of LR crystals of An−1-type and by proving that LR crystals of types Bn and Dn are identical to the corresponding LR crystal of type Cn in the stable region

存在論的恐怖に対する対処方略の選択的反応

内容の要約広島大学(Hiroshima University)博士(心理学)Doctor of Philosophy in Psychologydoctora