@article { author = {Mehrban, H.}, title = {Effective Hamiltonian of Electroweak Penguin for Hadronic b Quark Decays}, journal = {Journal of Sciences, Islamic Republic of Iran}, volume = {20}, number = {2}, pages = {-}, year = {2009}, publisher = {University of Tehran}, issn = {1016-1104}, eissn = {2345-6914}, doi = {}, abstract = {In this research we work with the effective Hamiltonian and the quark model. We investigate the decay rates of matter-antimatter of quark. We describe the effective Hamiltonian theory and apply this theory to the calculation of current-current ( ), QCD penguin ( ), magnetic dipole ( ) and electroweak penguin ( ) decay rates. The gluonic penguin structure of hadronic decays is studied through the Wilson coefficients of the effective Hamiltonian. We calculate the branching ratios of the tree-level, effective Hamiltonian, effective Hamiltonian including electroweak Penguin, effective Hamiltonian including Magnetic Dipole and the effective Hamiltonian including electroweak Penguin and Magnetic Dipole quark decays , , , . We show that, the electroweak Penguin and Magnetic Dipole contributions in b quark decays are small and Current-Current operators are dominant.}, keywords = {b quark,Effective Hamiltonian,Electroweak penguin,Gluonic penguin}, url = {https://jsciences.ut.ac.ir/article_20098.html}, eprint = {https://jsciences.ut.ac.ir/article_20098_03324fe3a6b48ace781e4133686c89f6.pdf} }