| 1. | the half life of the uncharged pion is 6×s.
中性兀介子的半衰期为6秒。 |
| 2. | the antiparticle of the π°is indistinguishable from the π°.
介子的反粒子同本身是无法区分的。 |
| 3. | " for his prediction of the existence of mesons on the basis of theoretical work on nuclear forces
提出核子的介子理论并预言介子的存在 |
| 4. | Read chap . 5 of your text book to complement our discussion of heavy mesons in chiral perturbation theory
10阅读教材第五章以补充关于手征微扰理论中重介子的讨论。 |
| 5. | Meanwhile we find that decay constant fn and the tt mass mv monotonously decrease as nuclear matter density increases
我们同时发现介子的衰变常数f _和质量m _随着核物质密度_ n的增加而单调递减。 |
| 6. | Using the effective action we got in a nuclear matter , we calculate the decay constant / ? and tt mass m - jf as functions of the chemical potential
利用我们得到的核物质中的有效作用量，我们计算了介子的衰变常数和质量，他们都是化学势的函数。 |
| 7. | Second , the quark potential has to be at present determined phe - nomenologically due to qcd nonperturbation and the mechanism of quark confinement is still in search
尹其次，由于夸克势只能唯象地得到，夸克禁闭机制及其对重介子的影响仍在探索之中 |
| 8. | We obtain the mass spectra of heavy mesons by solving salpeter equation and the schrbdinger equation in a unified way , respectively . then , we discuss the effects of relativistic kinetic energy on heavy mesons
) dinger方程，给出了重介子的能谱，并讨论了相对论动能修正对重介子能谱的影响。 |
| 9. | It is indicated that the radius parameter is insensitive to the spatial shape of the edge zone of source and is mainly affected by the size of the central zone of pions emitted in high energy heavy - ion collisions
结果表明，半径参数主要取决于高能重离子碰撞中多数介子产生的中间区域；对产生介子的边缘区域的空间分布形状不敏感。 |
| 10. | In this paper , which is about p + a p " + a " + reaction process , exciting the n * ( 1440 ) in the projectile of protron mediated by an isoscalar ( cr ) exchange , we continued to work in the framework of effective theory
本文在以标量介子作为交换介子的有效理论框架下，在完全相对论的基础上，研究了p + a p + a +反应模型中，在入射粒子p上产生共振激发态n ~ * ( 1440 )的反应过程。 |
