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pwa 短語和例子P.W.A. =1.Public Works ...

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The first two chapter is about some basic acknowledgement of particle physic pertinent to our studying and summaries the researching state of jap decay in finding glueball , hybrids , multiple - quake state and the pwa method . the third chapter goes into particulars of how to use feyman rules to write out invariant amplitudes 第一章和第二章分別簡略介紹與粒子物理和j粒子物理相關基礎知識,并敘述了粒子物理利用j豐富的衰變道尋找膠球、混雜態和多夸克態的研究狀況。

The fourth chapter lists out partial amplitude of using the pwa method described in chapter four , then we use cern programs to calculate out and plot angular distributions and mass distribution , finally we compare the influence of different form factors . the fifth chapter adopts the same process of the third chapter to analysis the decay the last chapter summaries our work and prospects further studying fields based on this thesis 第四章利用第三章描述的方法對j ~ - ~ +衰變進行了分波分析,然后用cern程序庫中的蒙特卡羅模擬程序和paw軟件對各個分波振幅進行了數值計算和繪圖,在給出各種分波成分末態粒子不變質量分布和角分布的基礎上,分析了兩種形狀因子對不變質量分布的影響。

It takes advantages of modern computer to fit all the experimental information , hence a very powerful pwa method . in this thesis , we use this method to analysis hadrons japdecay model jap - > ( ptt - tr + and j p radioactive decay model based on the pwa amplitude , we received mass distribution of two outgoing pious and angle distribution of the outgoing particles using the cern program . finally we compared tow different form factors ( barrier factors and gauss factor ) wh ich were always used the calculating of pwa amplitude 本文采用這種分析方法給出的j強衰變j ~ - ~ +和j粒子輻射衰變j ~ - ~ +分波振幅公式,利用cern的蒙特卡羅模擬程序繪出了末態粒子的角分布和不變質量分布,對分波分析中常用的兩種動力學形狀因子(中心位壘因子和高斯壓低因子)進行了研究比較。

There are two types of pwa method , the non - relativistic paw method and the relativistic paw method which developed from 40 ' s and 50 ' s of twenty century ( including covariant tensor pwa method and helicities amplitude analysis method ) . the relativistic covariant full amplitude pwa method is a common way to search for new states in current 本文討論的相對論協變全張量振幅分波分析方法是當前分析實驗尋找新粒子態的一種常用方法,它充分利用了計算機的優勢對所有實驗信息進行擬合,是分析級聯兩體反應的一種簡單而有效的方法。

To avoid depending on special physical model and find out a universal result , one can only uses dynamical analysis to get fitting formula . pwa is just a succinct and available method that does n ' t depend on special model 為了盡量少依賴于特定的物理模型,以使分析的結果具有普遍的意義,人們通過粒子運動學分析給出截面的擬合公式,分波分析就是這樣一種不依賴于具體模型分析實驗數據的有效方法。

Our present knowledge on excited baryons comes mostly from the partial wave analysis ( pwa ) of the irn and kn scattering data before 1980 . there are many ambiguous issues in this field 但近年來這方面的研究進展緩慢,現有的研究結果主要來自二十多年前的n和kn散射實驗數據,這一領域還存在許多有待解決的問題。

To support and empower pwa to lead a normal life and encourage their full participation with the community in making response to the epidemic 支援愛滋病患者,提升他們過正常生活的能力,同時鼓勵他們全面投入社區對抗這種流行病;

To promote equal opportunities for vulnerable groups such as msm , pwa ; and ( ii ) to make the public , particularly msm better aware of hivaids 提倡弱勢社? (例如男同性戀者和愛滋病患者)應享有同等機會;以及

To enhance young people s knowledge of hivaids , preventive measures and cultivate a change of attitude towards pwa 加強青少年對愛滋病病毒愛滋病和預防措施的認識,并改變他們對愛滋病患者的態度;

To enhance young people s knowledge of hiv aids , preventive measures and cultivate a change of attitude towards pwa 加強青少年對愛滋病病毒愛滋病和預防措施的認識,并改變他們對愛滋病患者的態度

Comprehensive programme targetting msm , pwa , youth internet users , the media and the general public 以男同性戀者、愛滋病患者、使用互聯網的青少年、傳播媒介和市民大眾為服務對象的綜合計劃

Comprehensive programme targetting msm , pwa , youth internet users , the media and the general public 以男同性戀者愛滋病患者使用互聯網的青少年傳播媒介和市民大眾為服務對象的綜合計劃

Strengthen the networks of pwa with other pwa delegates from other countries ; and 加強本港愛滋病帶菌者患者與其他國家的愛滋病帶菌者患者代表的聯系;

Strengthen the networks of pwa with other pwa delegates from other countries ; and 加強本港愛滋病帶菌者患者與其他國家的愛滋病帶菌者患者代表的聯系

To promote equal opportunities for vulnerable groups such as msm , pwa ; and 提倡弱勢社例如男同性戀者和愛滋病患者應享有同等機會以及

To promote the concepts of “ wellness “ and to promote acceptance towards pwa 推廣“身心健康“的觀念,并提倡對愛滋病患者的接納;

To promote the concepts of “ wellness “ and to promote acceptance towards pwa 推廣“身心健康“的觀念,并提倡對愛滋病患者的接納

To promote care and support towards pwa among secondary students 鼓勵中學生關懷和支持愛滋病患者。

To provide care and support services for the pwa ; and 為愛滋病患者提供護理和支援服務以及