Relativistic Corrections To The Double-spin Asymmetry Of Heavy Quarkoniun At RHIC

Since the quark model has been proposed, the particle physics communityhappened to turn the world upside down changes and the particle physics researchhasentered a new stage, The theory to make people aware of proton and neutros are notcomposed of the smallest unit of the material world, They can be subdivided intomore smaller units and physics has entered a rapid development stage.Theestablishment of the theory about quark make people have a comprehensiveunderstanding of proton and quark is composed of protons and neutrons unit neutron.People have tried to use quark theory to explain all of the particle problem. But withthe development of research, Gradually,people find the quark theory has itsdeficiencies. For example: the quark theory thinks proton is composed of quark,Proton-spin should be equal to its constituent quarks-spin.But the study found,the proton’s total spin always greater than the sum ofquarks-spin. This is the quark theory can not explain,and This is the famous" spincrisis". between the experimental observation and theoretical predictions of such alarge gap exists To solve this problem, a new theory was born-Quantumchromodynamics(QCD), The theory of quark give each quark three colors red, yellowand blue. Here is not the color of daily life,its just a physical dimension. In this waywe can have a very good interpretation of the spin crisis. Different colors havedifferent direction and dimension.So that proton’s total spin must be greater than thesum of quarks-spin.Based on the relativistic quantum color dynamics (RQCD), It also presents a nonrelativistic quantum chromodynamics(NRQCD). The non relativistic quantumchromodynamics used to describe the nature of the strong interaction.The relativisticquantum color dynamics is more consistent with the reality than the non relativisticquantum chromodynamics in the description of heavy quarkonium and nucleardecay.For example, Eight color singlet introduction of non relativistic quantumchromodynamics successfully explained the heavy quarkonium decays in thehe large transverse momentum;s “Infrared divergence”.This paper is use the non relativistic quantum color dynamics method, In theRelativistic Heavy Ion Collider(RHIC), By selecting different gluons polarizeddistribution functions. To calculate In the process of the nucleon collision heavyquarkonium’s Double-spin asymmetry. Based on the double spin asymmetryparameter research is more valuable than the study of gluon polarization cross section.Both can be used to verify the heavy quarkonium production principle, It also can beused to test nuclear gluon polarized distribution functions.