37 research outputs found
保险代理手续费监管制度思考
本文应用博弈论的方法,基于保险代理手续费率市场化的发展趋势,分析了我国保险市场的发展现状与特点,回顾了我国保险代理手续费监管制度的发展过程和存在问题,指出目前在我国推行手续费率市场化的监管政策可能引发"手续费率资源化"问题,并就保险代理手续费市场化应建立在保险费率市场化方面提出政策建议
An analysis of the reaction K+p → Q+p from 2.5 to 12.7 GeV/c
The Q-region of Kππ mass (i.e. 1.10 ≤ M(Kππ) < 1.5 GeV) is studied for the reactions K+p → K+π+π-p (≈ 77 000 events) and K+p → Kseen0 π+π0p (≈ 19 000 events). The data samples correspond to K+p interactions at fourteen beam momenta in the range 2.5 - 12.7 GeV/c. The production and the decay of the of the Kππ system are analysed as a function of the incident energy and the Kππ mass. It is shown that the differential cross section dσ/dtpp shrinks when the incident energy increases. The spin-parity is found to be predominantly 1+ for the whole Q-region and the density-matrix elements do not vary with the energy or the Kππ mass. The ratio of the number of Kρ{variant} to the number of K*π events is obtained from a fit of the decay Dalitz plot and found to be maximum for 1.25 ≤ M (Kππ) < 1.30 GeV. © 1972.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
Test of Helicity Conservation in the Reaction
SCOPUS: ar.jinfo:eu-repo/semantics/publishe
The reaction K/sup +/d to K/sup +/ pi /sup +/ pi /sup -/d at 4.6 GeV /c
The cross section is 250+or-30 mu b. A strong K* (892) signal is seen and also a broad enhancement in the Q region (M(K pi pi )<1.5 GeV) with no evidence for narrow resonances in this mass interval. The production and decay properties of these objects are studied, and comparisons made with similar reactions on protons. The properties of the angular distributions of the Q decay are very similar to those found in the related reaction on a proton target. The spin-parity of the Q system is found to be predominantly 1/sup +/ although 2/sup -/ cannot be excluded. The d pi mass distributions show an enhancement for mass values approximately 2.2 GeV; however the marked asymmetry in the corresponding decay angular distribution argues against a resonance interpretation of this effect. (23 refs)