quark 中文意思是什麼

音標 [kwɑ:k]
quark 解釋
n. 名詞 夸克〈假設的帶電核粒子，為已知的粒子如質子及中子等的基本構成部分〉。

  1. Quark and antiquark jets are identified from the 2 - jet events in e + e ~ collisions at 91. 2gev by checking them at parton level

    結果表明，噴注內部的動力學起伏的各向異性隨著截斷參數y _ cut的變化面明顯地改變
  2. A quark ( or an antiquark ) from the projectile hadron radiates a virtual photon on impact on the target, the photon subsequently decays into a lepton pair

    入射強子中的一個夸克（或反夸克）在靶的作用下輻射出一個虛光子，虛光子再衰變成正反輕子對。
  3. This thesis studied the dynamical fluctuations inside the single jets in 2 - jet events and the quark and gluon jets in 3 - jet events carefully to explore the dynamics of strong interaction. the dynamical fluctuations inside the single - jets, the quark jets aad antiquark jets are studied using monte carlo method respectively

    本文對e ~ + e ~ -碰撞產生的2 -噴注事件中的單噴注子樣本和3 -噴注事件中的夸克噴注及膠子噴注子樣本內部的動力學起伏進行仔細地研究
  4. By comparing theoretical predictions with experimental data, one can obtain a valuable information on the form of the qq interaction potential. such information is of great practical interest, since at present it is not possible to obtain the quark - antiquark ( qq ) potential in the whole range of distances from the first principles of qcd

    夸克勢模型是其中重要的模型之一，它不僅能研究強子的基態，而且能研究激發態，但是，源於在中和大距離與qcd真空的復雜結構有關的非微擾特徵，還不可能獲得整個距離范圍內的夸克?反夸克相互作用勢。
  5. Adopting the assummation that the quark interaction is the sum of the usual one - gluon direct exchange and the mixture of linear scalar and vector potentials, we structure the relativistic corrections of order v2 / c2to the cornell potential, including the annihilation potential for the quark and antiquark of the same favors which plays the same role with the one - gluon direct exchange at short distances. the effects of the relativistic corrections on the hyperfine splittings of quarkonium states are discussed, and a good fit to the available experimental data is obtained on heavy quarkonium mass spectra

    采納庫侖勢源於單膠子直接交換，而線性禁閉源於標量和矢量的混合，同時考慮在短程區域與單膠子直接交換起同樣作用的同味正反夸克的湮滅，構造了靜態夸克-反夸克勢到v ~ 2 c ~ 2級次的完全相對論修正，並擬合計算了重介子偶素的能譜，討論了相對論修正對重介子偶素能級分裂的作用。
  6. Superpotent atom smashers will undertake the quark quest in the 1980s.

    超高效的粒子加速器將於80年代投入夸克探索的工作之中。
  7. There has been many papers to discuss the in - medium quark and gluon condensates in nuclear matter which use the models with su ( 2 ) l su ( 2 ) r sym - metry. now, we make use of the chiral model su ( 3 ) l su ( 3 ) n including the baryon octet to discuss the quark condensate < qq > in strange matter, where q is an up or down quark field. on the one hand, from the experimetal data, it is found that < qq > vac = - ( 225 25mev ) 3, on the other hand, with the hellmann - feynman theorem, quark condensate can be evaluated on the hadronic level. in this paper, we will investigate the quark condensate in strange matter with the chiral symmetry su ( 3 ) l x su ( 3 ) rspontaneous breaking lagrangian to obtain the variation of the quark condensate in the strange matter when the baryon number change. it can be applied to understand the neutron stars when the neutron star are considered to be constructed by the strange matter. because nertron stars are homogeneous and at very low temperature, we will use the mean - field approximation and zero temperature throughout this paper

    鑒于已有大量文獻討論了核物質中的夸克凝聚，本文將討論在奇異物質中的夸克凝聚。而在介質中的夸克凝聚的基本公式可由hellmann - feynman理論導出，所以運用手征對稱自發破缺拉氏量以及平均場近似，我們就可以討論在奇異物質中的夸克凝聚，由所計算的結果表明： （ 1 ）奇異物質中的夸克凝聚隨奇異物質密度的增大而單調減小。 （ 2 ） -凝聚的出現對衰減率有影響。
  8. It predicted the existence of the w and z bosons, the gluon and two of the heavier quarks ( the charm and the top quark )

    它預測了w玻色子、 z玻色子、膠子以及兩種較重的夸克（魅、頂夸克） 。
  9. In quantum chromodynamics ( qcd ), vacuum is not trivial, that is, vacuum carry quantum numbers. such a behavior is embodied by non - perturbative con - densates of quarks and gluons. since hadrons are excitations with respect to the vacuum, hadronic properties are ultimately related to properties of the vacuum. based on the vacuum structure, some hadron properties have been described well. in the low energy region, qcd has two very important proper - ties : chiral symmetry spontaneous breaking and confinement, which are closely related to the vacuum characteristics of qcd. much experiments and theoretical studies have shown that chiral symmetry spontaneous breaking is very important to understand the low - energy feature of the strongly interacting physics, and the quark condensates give an expression to chiral symmetry spontaneous breaking. according to goldstone ' s theorem, the goldstone bosons with zero mass will emerge as the chiral symmetry is spontaneously broken. there are two ways : inear and non - linear methods to carry out this constraint. in our paper, we will use the non - linear method

    大量實驗和理論研究表明，手征對稱自發破缺對于理解低能強相互作用十分重要，而夸克凝聚又是導致手征對稱自發破缺的因素。按goldstone理論，伴隨手征對稱自發破缺應該會有零質量的goldstonebosons產生。而對于這一條件的實現有線性和非線性兩種方法本文將用非線性的方法將手征對稱自發破缺應用於su （ 3 ）模型即重子八重態，得出描述其強相互作用的手征對稱自發破缺lagrange密度。
  10. Besides the formation of quark - gluon plasma, there are many mechanisms in hadron environment which lead to j / suppression

    除夸克?膠子等離子體的形成之外，強子環境中也存在各種機制導致j壓低。
  11. Hqet ( heavy quark effective theory ) makes this symmetry explicit and proves to be a desirable framework to predict the properties of heavy hadrons

    Hqet顯式的處理這種對稱性，是處理重味物理的合適的理論框架。
  12. It is natural to suppose that pomeron exchange is just the exchange of several gluons, at least two, and these gluons couple to a same single quark

    我們很自然的想到交換pomeron的過程對應于交換幾個膠子，至少應該是兩個膠子，而且這些膠子應該和質子內部的同一夸克相藕合。
  13. The hard process is included in a natural way, which offers the opportunity to calculate the parton spectra and parton density which aie closely related to the forinatioi1 of quark gluon plasma. the strict calculation is performed on the parton level, however, hadrons are finally observable particles

    而pomeron與remnant之間的關聯，以及pomeron之間的關聯，則通過補償夸克（或感應夸克）來實現? ?每當一個海夸克或一個反夸克從真空中激發出來作為pomeron的色弦端點時，它的反粒子也從真空中激發出來，進入到相鄰的remnant中。
  14. In this thesis, we derive a new quark potential by constructing the effective theory of quantum chromodynamics ( qcd ) with dilation inspired by superstring theory and study this new quark potential in heavy mesons sector

    本文構建了一種有伸縮子（ dilaton ）的量子色動力學（ qcd ）有效理論，得到了一種新的夸克相互作用勢。
  15. The huge energy - momentum of particles can be transformed into thermal energy by accelerator experiment at high energy to study perturbative vacuum of quantum chromodynamics and determine the signal of quark - gluon plasma

    在實驗上，人們通過相對論性重離子碰撞實驗把巨大的動能轉化為熱能，來研究量子色動力學的微擾真空及其所預言的夸克?膠子等離子體。
  16. One of the focuses in investigating the high energy heavy - ion collisions is to explore the existence and the properties of quark - gluon - plasraa ( qgp ) which is predicted by the strong interaction theory - quantum chromodynamics ( qcd )

    探尋強相互作作理論?量子色動力學（ qcd ）所預言的夸克膠子等離子體（ qgp ）的信號及相變性質（ ? ）直是高能核?核碰撞實驗的重要目標之一。
  17. The quark energy loss of fast quarks in nuclear matter

    高能夸克在核環境中的能量損失
  18. It doesn t mean that the up quark has any " up " property

    這些只是名字，例如上夸克沒有甚麼上的性質。
  19. For example, the analysis of precision measurements of w and z boson properties led to the accurate prediction of the top quark mass before the top quark had been directly produced

    舉個例子，在以實驗直接製造出頂夸克之前，我們就已經藉由分析w與z玻色子相關性質的精密測量，而精準預測出頂夸克的質量。
  20. His creative work firstly lies in : discovering the j particle according to the infinite and disjunctive dialectical materialism viewpoint, challenging " the quark confined ", and investigating the cosmos profounded mystery, by researching to manufacture " alpha magnetic spectrometer "

    他創造性的工作在於：根據物質無限可分的辯證唯物主義哲學觀點，發現j粒子，挑戰「夸克禁閉」 ；研製阿爾法磁譜儀，探索宇宙奧秘。
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