介子

The pions form another triplet, electrically different but otherwise alike

介子构成另一种三重态，只是电荷不同，其它方面均相同。

GeV protons originate pions, which are focused by these structures; negative ones are defocused, and the beam contains predominantly muon neutrinos from the decay of these pions.

120电子伏特质子源于pions ，这是重点，这些结构；不利的是弥散，与梁载主要介子衰变中微子从这些pions 。

By consideringthe formation time of secondary particles we have developed theparticipant nucleon model incorperating the secondary collisionsnaturally and calculated the increase of the 〓 ratio caused by thesecondary collisions of pions with target nucleons.

本论文另一研究工作就是通过考虑次级粒子的形成时间，自然地将参加者核子模型发展成为包括次级碰撞过程的模型，并根据此物理图象，计算了高能原子核一原子核碰撞过程中由于π介子与核子的次级碰撞过程而导致的次级粒子中的K+/π+比例的增加。

However, the pionic decay widths of Dsj(2317) and Dsj(2460) are too small to fit the experimental data.

但是，与现有的实验结果比较，D*sj(2317)，Dsj(2460)的π介子衰变宽度要小一个数量级。

There is clear observed evidence of collective pionic modes in nuclei, which profoundly differ from all of the previously observed collective nuclear states.

有清楚的实验证据表明，核内存在π介子的集体模式，这种集体模式与以前观测到的所有核集体运动模式截然不同。

Our calculations show that the secondary collisions ofpions with target nucleons is not enough to explain the data ofE802 collaboration.

本论文的研究结果表明：仅仅由于π介子与核子的次级碰撞过程还不足以解释E802组的实验结果。

Implications from experimental data for neutral meson mixing and the neutron electric dipole moment are well-studied.

我们也详细研究了关於中性介子的混合与中子的电偶极矩实验数据所衍生的涵义。

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We adopted the new decomposition approach of the DBHF G-matrix, which was recently proposed by Schiller and Muether and calculate the Dirac structure of the nucleon self-energy.

通过分析不同的介子交换过程我们可以发现，来自能量无关的DBHF的直接项的贡献在核子自能中占主要的部分，自能的动量相关来自交换项的贡献，而G矩阵中的短程关联项ΔG减小了自能的强度。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。