Since the early days of the quark model, hadron spectroscopy has remained central to our understanding of QCD. High precision data on various reactions that have recently been collected from experiments at CERN, JLab,B- and charm factories have produced tantalizing evidence for the existence of exo...
Isospin violation in phi, J/psi, psi-prime ---> omega pi0 via hadronic loops. 来自 Semantic Scholar 喜欢 0 阅读量: 54 作者:G Li,Z Qiang,BS Zou 摘要: In this work, we study the isospin-violating decay of phi-->omegapi0 and quantify the electromagnetic (EM) transitions and ...
For example, the observation of \Gamma (J/\psi \rightarrow f_0 \omega ) \simeq \frac{1}{2}\Gamma (J/\psi \rightarrow f_0 \phi ) [87] clearly shows the existence of the non-strange and strange quark content. Therefore, f_0(980) should be a mixture of n {\bar{n}}=\frac...
摘要: 本文对J/psi衰变中的两个阈附近的奇异现象, 即J/psi-omega pi pi衰变中的"b_1疑难"和 J/psi-K anti-K pi衰变中的K anti-K阈增强进行了研究.我们主要讨论了阈下的S道rho交换对这两个道的影响.考虑到rho的质量大概在omega pi和K anti-K的阈值下超过150 MeV的地方,并且rho...
相信每个人上学时,老师讲到这些符号的发音都不一样,快来看看你听到的是什么吧。 变化量符号 求和符号 介电常数 角度或氦核 角度 正弦 余弦 到底是重音在前, 还是重音在后啊... 正切 余切 角1 看了这么多读音,下面我们科普一下所有希腊符号的读音吧。
• Ιι(Iota)• Κκ(Kappa)• Λλ(Lambda)• Μμ(Mu)• Νν(Nu)• Ξξ(Xi)• Οο(Omicron)• Ππ(Pi)• Ρρ(Rho)• Σσ/ς(Sigma)• Ττ(Tau)• Υυ(Upsilon)• Φφ(Phi)• Χχ(Chi)• Ψψ(Psi)• Ωω(Omega) #希腊语学习 ...
Posted inAlpha Delta Pi,Beta Theta Pi,Phi Delta Theta,Phi Kappa Psi,Sigma Phi Epsilon|TaggedAlpha Delta Pi,Beta Theta Pi,Chuck Stenzel,Eileen Stevens. C.H.U.C.K.,hazing,Max Gruver,Phi Delta Theta,Phi Kappa Psi,Sigma Phi Epsilon,Tim Piazza|Comments Offon Hazing Has No Place in Fraterni...
The decay J/psi ->(N) over barN pi provides an effective isospin 1/2 filter for the pi N system due to isospin conservation. Using 58x10(6) J/psi decays collected with the Beijing Electromagnetic Spectrometer at the Beijing Electron Positron Collider, more than 100 thousand J/psi -> p...
{ensuremath{-}}{ensuremath{pi}}^{0}ensuremath{gamma}$ events have been selected and the branching fraction $mathcal{B}(J/ensuremath{psi}ensuremath{rightarrow}{ensuremath{pi}}^{+}{ensuremath{pi}}^{ensuremath{-}}{ensuremath{pi}}^{0})=(2.18ifmmodepmelsetextpmfi{}0.19)%$ has been ...
\begin{aligned} S_{\psi \phi }= \sin (2|\beta _s|-2\phi _{B_s}) \end{aligned} (24) where the phases \beta _s and \phi _{B_s} are defined by \begin{aligned} V_{ts}= - |V_{ts}|e^{-i\beta _s}, \quad 2\phi _{B_s} = -\theta ^{B_s}_S \end{aligned}...