B decays into a scalar/tensor meson in pursuit of determining the CKM angle $\gamma$

In this work, I suggest a new way for determining the CKM angle $\gamma$ via B decays into a scalar/tensor meson without any hadronic uncertainty. The proposed idea makes profits of the two triangles formed by the $B^\pm\to (D^0,\bar D^0,D_{CP}^0) K^{\pm}{0(2)}(1430)$ decay amplitudes. The advantages in it are large CP asymmetries and the avoidance of the use of doubly Cabibbo-suppressed D decays. Branching ratios of $B^\pm\to (D^0,\bar D^0,D{CP}^0) K^{\pm}{0(2)}(1430)$areestimatedtohavetheorder$10^{-6}-10^{-5}$ and therefore measurable by the ongoing LHCb experiment and future experimental facilities. The usefulness of other related channels, for instance the neutral $B_d$ decays into $D{K}_{0(2)}^{\ast }(1430)$ and $B_s\to (D^0, \bar D^0) M$($M=f_0(980),f_0(1370), f_2’(1525), f_1(1285), f_1(1420), h_1(1180))$,the$B\to D^{\mp} a{0,2}^{\pm}$fortheextractionof$\gamma+2\beta$andthe$B_s\to D^{\mp} K_{0,2}^{*\pm}$toaccess$\gamma+2\beta_s$, is also discussed in brevity.