- 作者: 閻愛德
- 作者服務機構: 國立清華大學物理研究所
- 中文摘要: 在此篇論文中,我們對高能強子互撞之單粒子分佈,從現象學的觀點作了一個相當詳盡的研討,其中內容包括(一)早比度(Early Scaling)和x變數,在這一節中我們將常用的x,X, xR 三個變數作了一個比較,發現x是其中最好的一個變數,因為利用此一變數,則帶有奇特量子數(Exotic quanturn number)的反應其單粒子分佈在能量相當低時即趨向其極限分佈(二)一般高能理論均要求在x趨近於1時應滿足的形式,我們發現這個形式不僅是在X→1時正確,實際上這個形式是在整個實驗能達到的區域均相當地正確(三)我們發現克銳爾(Carey)等人提出之分解律(Factorization):只是大致正確,而不是很準確地對,同時我們也發現此一分解律,是被低階共鳴子的蛻變所破壞(四)當我們固定了x,而來研討橫軸動量(Transverse momentum)之分佈時,我們發現在整個的橫軸動量區域中,其分佈均可以一橫軸動量之乘方表出,這是與平常一般認為的單粒子橫軸動量分佈在橫軸動量小時需用橫軸動量的冪方表示,只有當橫軸動量大時方可以其乘方表出不同。由於此一發現我們相信單粒子之橫軸動量分佈與強子的形態係數(Form factor)有著密切的關係。我們由於這個利用現象學方法之研討發現在不同區域(大x,小x,大p+, 小p+)之單粒子包容分佈之間是有著極密切之關係而且是相連的,此一結論與卑而肯及庫格(Bjorken and Kogut)提出之「對應律」(Correspondance Principle)相吻合。
- 英文摘要: In this paper,we make a comprehensive study of the single Particleinclusive distribution in high energy hadron-hadron collisions from thephenomenologieal Point of view. Topics discussed inelude:(i)Early sealing and x variable,(ii)With p+fixed, E is fitted to. We found that the fit Could be extendedto the small x region.Significances of this point are also diseussed,(iii)It has been suggested by Carey et al taht the factorizability . We have examined this Proposal is detail.We found thisfactorization is only qualitatively valid.The connection between thebreakdown of this factorizability and the low-lying resonances will bediseussed,(iv)With x fixed at different values,we have studied thetransverse momentun,dependence of the inclusive distributions.We foundthat a power law dependence of P can fit both the large P and smallP+ regions.An important conclusion of this study is that different regionsin the single particle inclusive distributions,such as the large x and smallx regions,largeP and small p regions are closely related.This phenomen-ological study provides a confirmation of the "correspondence principle"of Bjorken and Kogut.
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