CAJ | 학술논문

最近BESⅡ合作组在p(-p)不变质量谱阈值附近观测到一个增强.利用协变张量方法,给出了ψ辐射衰变道ψ→γp(-p),γ∧(-∧),γ∑(-∑),γΞ(-Ξ)分波分析的理论公式.通过蒙特卡罗模拟,还给出了J/ψ→γp(-p)中光子和质子的角分布,它们可以作为将来对这些道分波分析的有用参考.
최근BESⅡ합작조재p(-p)불변질량보역치부근관측도일개증강.이용협변장량방법,급출료ψ복사쇠변도ψ→γp(-p),γ∧(-∧),γ∑(-∑),γΞ(-Ξ)분파분석적이론공식.통과몽특잡라모의,환급출료J/ψ→γp(-p)중광자화질자적각분포,타문가이작위장래대저사도분파분석적유용삼고.
Recently BESⅡcollaboration observed an enhancement near the pp invariant mass spectrum.Using the covariant tensor formalism, here we provide theoretical formulae for the partial wave analysis (PWA) of the ψ radiative decay channels ψ → γp(-p), γ∧(-∧), γ∑(-∑), γΞ(-Ξ). By performing the Monte Carlo simulation, we give the angular distributions for the photon and proton in the process of J/ψ →γp(-p), which may serve as a useful reference for the future PWA on these channels.