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Based on our previous study of the QCD inspired eikonalized model for describing vector meson photoproduction, pp, and \(\bar p\) p elastic scattering at high energies, we apply the mode to high energy K ± p elastic scattering. The total cross section σ tot(s), differential cross section dσ/dt, the ratio of the real part to imaginary part of the forward scattering amplitude ρ(s), and nuclear slope parameter function β(s) are calculated in the model. Our results show that the theoretical prediction for σ tot(s) is in a good agreement with the experimental data within error bars of the data. For the other theoretical predictions there are no data to test the predictive power of the model. We need the corresponding experimental data to examinate the validity of our QCD inspired eikonalized model. However, our calculations clearly show that the Odderon exchange in the process makes a significant contribution to the observable of ρ(s) and β(s). Therefore, we may conclude that there is a good opportunity to find the QCD Odderon in the K ± p elastic scattering at high energies. 相似文献
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Based on the fully dressed quark propagator and chiral perturbation theory, we study the ratio of the strange quark mass ms to up or down quark mass mu,d . The ratio is related to the determination of quark masses which are fundamental input parameters of QCD Lagrangian in the Standard Model of particle physics and can not be directly measured since the quark is confined within a hadron. An accurate determination of these QCD free parameters is extremely important for both phenomenological and theoretical applications. We begin with a brief introduction to the non-perturbation QCD theory, and then study the mass ratio in the framework of the chiral perturbation theory (χPT) with a parameterized fully dressed quark propagator which describes confining fully dressed quark propagation and is analytic everywhere in the finite complex p2-plane and has no Lehmann representation so there are no quark production thresholds in any theoretical calculations of observable data. Our prediction for the ratio ms/mu,d is consistent with other model predictions such as Lattice QCD, instanton model, QCD sum rules and the empirical values used widely in the literature. As a by-product of this study, our theoretical results, together with other predictions of physical quantities that used this quark propagator in our previous publications, clearly show that the parameterized form of the fully dressed quark propagator is an applicable and reliable approximation to the solution of the Dyson-Schwinger Equation of quark propagator in the QCD. 相似文献
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利用传输矩阵法,研究周期不对称度对光子晶体透射谱的影响,结果表明:当周期不对称度为零时,光子晶体透射峰随着周期数的增大而变得越精细,但其透射率均为100%不变;当周期不对称度为不等于零的恒定值时,光子晶体透射峰的透射率低于100%,但随着周期数的增大,透射峰仅变得精细而透射率不变;光子晶体透射峰的透射率随着周期不对称度增大而下降,而且不对称度越大,透射率下降越快,同时透射峰变窄的速度也越快。周期不对称度对光子晶体透射谱的影响规律,为光子晶体模型的构造和设计制备等提供方法依据。 相似文献
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利用传输矩阵法理论,通过数值计算模拟的方法,研究双负介质对一维光子晶体透射能带谱的影响。结果表明:当C介质由双正介质变成双负介质时,光子晶体(CBAABC)n的禁带、能带和光子晶体(AB)m(CBAABC)n(BA)m的透射峰均出现明显的简并现象,即前者相邻多禁带和多能带结构简并为较宽的单禁带和单能带结构,后者的透射峰由2n+1条简并成2n-1条;当双负介质C的光学厚度负值减小时,光子晶体(AB)m(CBAABC)n(BA)m的透射峰向禁带中心靠拢,出现简并趋势。双负介质对光子晶体透射能带谱的简并效应,为光子晶体设计光学滤波器件、光学开关等提供参考。 相似文献
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Ji-huan PAN 《Frontiers of Physics》2010,5(2):215
Based on our previous study of the QCD inspired eikonalized model for describing vector meson photoproduction, pp , and p ˉ p elastic scattering at high energies, we apply the mode to high energy K ±p elastic scattering. The total cross section σ tot(s ), differential cross section dσ /dt , the ratio of the real part to imaginary part of the forward scattering amplitude ρ (s ), and nuclear slope parameter function β (s ) are calculated in the model. Our results show that the theoretical prediction for σ tot(s ) is in a good agreement with the experimental data within error bars of the data. For the other theoretical predictions there are no data to test the predictive power of the model. We need the corresponding experimental data to examinate the validity of our QCD inspired eikonalized model. However, our calculations clearly show that the Odderon exchange in the process makes a significant contribution to the observable of ρ (s ) and β (s ). Therefore, we may conclude that there is a good opportunity to find the QCD Odderon in the K ±p elastic scattering at high energies. 相似文献