Polarized forward-backward asymmetries of the lepton pair in B → K1l+l- decay in the presence of the new physics

Double polarized forward-backward asymmetries in B -> K-1(1270, 1400)l(+)l(-) with l = mu, tau decays are studied, using the most general non-standard local four-fermi interactions, where the mass eigenstates K-1(1270) and K-1(1400) are a mixture of P-1(1) and P-3(1) states with the mixing angle theta(K). We have calculated the expressions of nine doubly polarized forward-backward asymmetries, and we show that the polarized lepton pair forward-backward asymmetries are greatly influenced by the new physics. Therefore, these asymmetries are an interesting tool for exploring the status of the new physics in the near future, particularly at the Large Hadron Collider.