- 更多网络例句与介子相关的网络例句 [注：此内容来源于网络，仅供参考]
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The paper is made up of two parts:Firstly, we studied systematically the radiative decays of light vector mesons:〓in the framework of a U(3)L×U(3)〓chiral theory of mesons. In this theory, low-lying pseudo scalar, vector, axial vectormesons are introduced as the bound states of the quark fields.
全文分轻味矢量介子辐射衰变和重味矢量介子的软π衰变两部分：首先，我们在U(3)〓×U(3)〓手征介子理论的框架内，系统的研究了轻味矢量介子ρ，φ的辐射衰变〓在该理论中，低能的赝标，矢量和轴矢介子场是作为夸克场的束缚态被纳入。
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The predictions derived from our relation are in reasonable agreement with those given by many other different approaches.Based on the main assumption that a_0(980) and D*_(2317) belongto 1~3 P_0 multiplet, in the framework of Regge phenomenology andmeson-meson mixing, we suggest that a_0(980), K_0*( 1052), f_0( 1099) and f_0(530) constitute the ground scalar meson nonet.
另外，我们假定a_0(980)和D_~*(2317)态是通常的1~3P_0介子态，在Regge唯象和介子混合的框架下，我们对基态标量介子九重态可能安排进行了讨论，我们建议a_0(980)，K_0~*(1052)，f_0(1099)和f_0(530)组成基态标量介子九重态。
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At the same time, due to 2~1S_0、 3_1S_0 are the radical excitations of 1~1S_0,we can use Regge trajectory on the (n,M~2)-plane with the approximate same slope to describe the mass of isoscalar of 3~1S_0 nonet (1926MeV). The two results derive from different ways are approximate. 2 The mass of the isodoublet of 2~3S_1 nonet is analyzed in the quarkonium-quarkonium mixing scheme, the results (1584±16.7MeV) is far from the K~*(1410)(1414±15MeV). 3 Based on "glueball dominance" picture, we establish glueball-meson mass relations. For the 2~ glueball mass and 4~ glueball mass used as input parameters, these relations predict the mass of isoscalar of 1~3F_4(4~)(2076±19.66MeV).
的质量(1900±12MeV)；同时考虑到2~1S_0、3~1S_0为1~1S_0的径向激发态，在(n，M~2)雷吉轨迹图中应该具有近似相同的斜率，利用雷吉轨迹可以得到其对应质量为(1926MeV)，两种方法得到了两个十分自洽的结果。2在介子—介子混合框架下，对2~3S_1介子九重态中同位旋二重态的质量给出估计，得到(1584±16.7MeV)，这个结果相对于K~*(1410)=1414±15MeV有较大的偏离。3在胶球为主的图像下，利用介子—胶球质量关系，选择2~与4~胶球的质量作为输入参数，我们得到1~3F_44~(介子九重态中同位旋标量态？
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We investigate phenomenologically effects of the flavor-dependent quarkonia annihilation on the meson-meson mixing, and find that corrections due to the flavor-dependent quarknoia annihilation can be described by the constituent quark masses in the mixing model which holds for all the meson nonet. We also study the relation between Regge trajectory and meson spectrum, and therefore concluded that the quasi-linear Regge trajectory with the requirements of additivity of intercepts and inverse slopes can describe the meson spectroscopy with good accuracy, and it also holds for the radial excited mesons except for the bbbar mesons.
我们唯象地研究了味道有关的夸克偶素湮灭效应对混合的影响，发现味道有关的夸克偶素间的湮灭引起的修正可以通过组分夸克的质量来描述，考虑这种修正的混合模型可以用于所有的介子九重态；我们也研究了Regge轨迹和介子质量间关系，发现满足截距相加及斜率倒数相加的准线性Regge轨迹可以很好地描述介子的质量，除bbbar外，线性Regge轨迹也可以很好地描述介子激发态的质量；最后，我们借助于赝标介子和标量介子，讨论多个共振态的混合及衰变。
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In the chiral SU(3) quark model, we use the coupling between quarks and nonet scalar meson fields and nonet pseudo-scalar meson fields to describe the medium and long range interactions, and use one gluon exchange to describe the short range interaction. In the extended chiral SU(3) quark model, besides the nonet pseudo-scalar meson fields and the nonet scalar meson fields, the coupling between vector meson fields and quarks is also considered, the short range interaction can be dominately described by vector meson exchange. We investigate the nucleon-hyperon interaction in the extended chiral SU(3) quark model and study the S-wave phase shifts of N-Λ and N-Σ systems. Comparing to the results in chiral SU(3) quark model, we find that the short-range interaction could be described either by the one-gluon exchange or vector meson exchange.
在手征SU(3)夸克模型中，用夸克与标量介子九重态和赝标介子九重态场的耦合来描述中长程相互作用，单胶子交换来描述短程相互作用，推广的手征SU(3)夸克模型是在原来手征SU(3)夸克模型的基础上进一步引入了夸克和矢量介子九重态场的耦合，主要由矢量介子交换来描述短程相互作用，在推广手征SU(3)夸克模型下研究了核子－超子相互作用过程，计算了N-Λ和N-Σ相互作用的S波散射相移，通过和手征SU(3)夸克模型的结果比较，发现N-Λ和N-Σ系统的短程相互作用既可以由单胶子交换来描述，也可以由矢量介子交换来描述。
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Among mesons, the lightest and most important one is certainly the pion, thus it is no accident that its structure, properties (both in free space and in nuclear matter) and interactions with nucleons and nuclei have gotten considerable attentions in the past and again at the present time.
在各种介子中，π介子是最轻且最重要的介子，关于自由空间中π介子的结构与性质、核介质内π介子的性质、π-核子相互作用与π-核相互作用等问题，始终受到相当多的关注。
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We find the most contributions of form factors come fromΨπ,K andΨB, but the contributions ofΨσfrom the pion and the kaon meson, the contribution ofΔfrom B meson are very small, and can be neglected in most of the calculations.
结果发现π、K介子波函数中的Ψπ，K，B介子波函数中的ΨB对形状因子的贡献最大，而π、K介子波函数中的Ψσ，B介子波函数中的Δ对形状因子的影响很小，可以忽略。
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In the quarkonium-quarkoniumglueball mixing scheme, we quantitatively present the quarkonia-glueball content of the isoscalar scalar states and the isoscalar pseudoscalar states, and find that it is necessary to introduce additional glueball components in the ground isoscalar pseudoscalar mesons.
在介子—介子—胶球混合的框架下，我们定量地给出了同位旋为零的标量态和同位旋为零的赝标态的夸克-胶球内容，发现基态同位旋为零的赝标介子中有必要引入附加的赝标胶球成分，标量介子和标量胶球间存在强烈的混合。
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Finally,we discuss the mixing and decays of multi-resonances via studying the properties of the pseudoscalar and scalar mesons.For the pseudoscalar mesons, we find the eta(1410) is mainly a glueball state by studying the decays of the ground pseudoscalar mesons. For the scalar mesons, we suggest the ground mesons contain neglect
对于赝标介子，通过研究它们的衰变发现eta(1410)的主要成分是胶球，对于标量介子，借助描述五个标量介子混合的质量矩阵，通过拟合观察到的标量介子的质量，发现基态标量介子中的胶球成分可以忽略，而其径向激发态中含有比较多的胶球成分。
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The contributions ofΨp from the pion and the kaon meson, the contribution ofΨB from B meson are not very small, and can not be safely neglected for giving more resonable results of form factors.The B meson wavefunction is a major source of uncertainty in the study of B meson decays. The B→πand B→K transition form factors provide a good platform to determine the possible regions for the two typical phenomenological parametersΛandδ.
但π、K介子波函数中的Ψp和B介子波函数中的ΨB对形状因子的贡献比较大，为了获得更加合理的形状因子的结果，一般不能忽略π、K介子波函数中的Ψp和B介子波函数中的ΨB项的贡献。B介子波函数是B介子衰变中不确定性的一个主要的来源。B→π和B→K跃迁形状因子为确定两个典型的唯象参数Λ和δ提供了一个很好的平台。
- 更多网络解释与介子相关的网络解释 [注：此内容来源于网络，仅供参考]
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Fibber washer：快巴介子
Fender washer 间隔介子 | Fibber washer 快巴介子 | Internal tooth lock washer 内菊花介子
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Split lock washer：裂开型弹弓介子
Rubber washer 橡胶介子 | Split lock washer 裂开型弹弓介子 | Spring washer 弹簧介子
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meson：介子;重介子
向量介子 meson, vector | κ介子;重介子 meson, κ | 介子原子 mesonic atom
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scalar meson：純量介子= 標量介子
scalar lepton 純量輕子= 標量輕子 | scalar meson 純量介子= 標量介子 | scalar photon 純量光子= 標量光子
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meson factory：介子工厂
meson 介子 | meson factory 介子工厂 | meson theory 介子理论
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vector meson：向量介子 =矢量介子
vector field 向量場 =矢量場 | vector meson 向量介子 =矢量介子 | vector potential 向量[位]勢 =矢勢
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pion condensation：介子凝聚
pion beam 介子束 | pion condensation 介子凝聚 | pion dosimetry 介子剂量测定法
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pion beam：介子束
pion 介子 | pion beam 介子束 | pion condensation 介子凝聚
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meson, pseudoscalar：准纯介子
正介子 meson, positive | 准纯介子 meson, pseudoscalar | ρ波介子 meson, P-wave
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neutretto：中介子
5、原子虽小,原子核中尚有中微子(neutrino),超子(hyperon),介子,重电子(meson),重介子(K meson),轻介子(L meson),中介子(neutretto)等20多种,或可能有待发现新的粒子.