| The Standard Model of particle physics is a theory based on the gauge theory and which purports to describe the strong, weak and electromagnetic interactions of the elementary par-ticles. It is the best theory in describing the dynamics of elementary particles, even though it has some problems, which indicates that it is not an ultimate theory but an effective theory at low scale. In the heavy flavor physics, especially for the B meson, there are many kinds of decay modes and lots of CP violation information, which can provide a very fertile ground for testing the Standard Model. In the (b(?)) system, between the excited state (?)q* meson decays and the bound state (?)q meson decays, there are many similarities and relations, which are also hopeful to be well measured in the future.In this paper, we firstly introduce the Standard Model, including the base particle, CKM matrix, unitary triangle and other basic contents. Secondly, we briefly review the theoretical framework, including the low energy effective Hamiltonian, and the extraction and evolution of Wilson coefficient. Thirdly, we introduce the effective Hamiltonian of B meson physics and the calculation approaches which are used to deal with the hadron matrix element in B meson system. Finally, we present our works and conclusions as follows.(1). Within the QCD factorization framework, we evaluate the spectator scattering and annihilation contributions in Bu,d,s ? PV decays. Firstly, for the Bu,d ? PV decays, which have been exactly measured, we perform global ?2-fits on endpoint divergences parameter-s combining many experiment data. It is found that, (i).the nonfactorizable parameter and the factorizable parameter should be considered individually, ie.XAi(?Ai,?Ai)?XAf(?Af,?Af) at 68% C.L.. (ii).for the nonfactorizable annihilation and hard spectator scattering corrections, XH(?H,?H)= XAi[?Ai,?Ai) is allowed, (iii).moreover, a relatively large annihilation parameter ?Ai,H?3 is required. Secondly, motivated by the recent LHCb measurements on (?)s0?K*+?- and (?)s0? K±k*(?) decay modes, we perform a ?2 fit on the annihilation parameters. The fitted results for Bu,d ? PV decays are also redisplayed for comparison. It is found that, due to the large experimental errors and theoretical uncertainties for Bs? PV decays, the allowed space of XAi(?Ai,?Ai) in Bu,d ? PV decays entirely overlaps with the one in Bs ? PV, which implies that the same parameters XAi(?Ai,<?Ai>?Ai) for Bu,d and Bs are still allowed at 68%C.L.. Finally, With the values of best-fit points obtained from Bu,d? PV decays, the theoretical results in-cluding the CP averaged branching fractions and CP violation of Bu,d,s ? PV decays are in good agreement with the experiment data.(2).The B* meson weak decays are studied in naive factorization approach and QCD fac-torization approach, respectively. At present, there is no experimental data and theoretical prediction of the two body nonleptonic weak decay of the excited state particle B*. In or-der to provide the theoretical reference for the future experimental measurement, B* ? PP and PV decay are studied using naive factorization approach, and the theoretical predic-tion and analysis are presented. It is found that the tree-dominated and CKM-favored de-cays have large branching fractions ? 0(10-9). Hence these decays should be sought for with priority and firstly observed at the forthcoming Belle-II. Some interesting and useful correlations between B* decays and its corresponding B decays are presented, for example RB=B((?)q0?Dq*P)/B((?)q*0?DgP)?3?B/?B*. Then, in order to obtain more precise and more reliable theoretical results of the B*? PP and B*? PV decay which have relatively large branching fraction, the (?)(s)*0?D(s)+M-(M=?,?,K*) decays are studied within the QCD factorization framework, considering gluon radiative corrections to vertex. It is found that the dependence of coefficient ?1 on the renormalization scale ? has been reduced partly when the as corrections are taken into account. |
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