Research State B Meson Distribution Amplitude Excitation Light Cone Under The Heavy Quark Limit

The standard model of elementary particle physics, which is built on the basis of S U(3)(?) SU(2)L (?) U(1)Y local gauge symmetry, is now the standard theoretical framework describing the basic building blocks and fundamental interactions in the nature. The SM has undergone a large mount of precise experimental test in the past half century and describes the strong, weak, electromagnetic interactions successfully. Even so, there remain some problems in the SM, too many free parameters, the existence of Higgs, the mass hierarchy of fermions, not containing the gravity, for example. All these imply that the SM is just an effective theory and there should be some new physics beyond it. Precise study on the hadronic processes is an important way to searching for new physics the SM.The B meson non-leptonic decays contain rich information and thus is an important place to testing the SM, extracting the basic parameters and searching for new physics beyond the SM. By using the heavy quark expansion and various factorization methods, one can calculate these decays systematically. In the factorization methods, the non-perturbative effects in decays are represented by the transition form factors and light-cone distribution amplitudes of the hadrons involved. The distribution amplitudes of the light mesons and transition form factors have been investigated extensively via the constituent quark model and sum rules, while the distribution amplitudes of heavy meson are not well known at present.Qiao C F el. have constructed the2-particle quark-antiquark light cone distribution ampli-tudes(DAs) for the ground state B meson(1S0) model independently by using the equation of motion and heavy quark effective theory. This thesis is devoted to study the excited B meson DAs via this method, including the vector meson B*(3S1), axial vector meson B1(1P1,3P1mix-ing) and scalar B meson (3P0). Some exact relations between2-particle and3-particle DAs are derived via the equations of motion and constraints from heavy quark symmetry. The DAs re-lations of B*relations are exactly same as those of the ground state B meson, while new results are given for B1and the scalar B meson. The quark-antiquark2-particle DAs of B1and scalar B meson are then determined model independently by solving these new relations. Similar to the ground state B meson, the leading twist DAs also contain the contributions from multi-particle states.