Angular analyses of exclusive $\overline{B}\to X_J{\ell }_1{\ell }_2$ decays for spin $J\le 4$

Abstract

As an update to our previous calculation for spin $J\le 2$, we present the angular moments for exclusive $\overline{B}\to X_J{\ell }_1{\ell }_2$, where ${\ell }_1$ is a charged massless lepton and ${\ell }_2$ is a charged or neutral massless lepton, and $X_J$ is a mesonic system with spin $J\le 4$. The expected applications include higher resonances in the $[K\pi ]$ system in ${\overline{B}}^0\to K^{-}{\pi }^{+}{\mu }^{-}{\mu }^{+}$ at LHCb in Run~II, and in the $[\pi \pi ]$ system for $\overline{B}\to \pi \pi {\ell }^{-}{\bar{\nu }}_{\ell }$ at Belle~II. For the $J\le 2$ case, we also provide a set of consistency relations among the measured moments observables and validate them against the latest measurements from LHCb.

References in corpus (3)

• Observation of a new charged charmoniumlike state in B -> J/psi K pi decays
• New physics reach of the decay mode $\bar{B}\to {\bar{K}}^{\ast 0}{\ell }^{+}{\ell }^{-}$
• Differential branching fraction and angular moments analysis of the decay $B^0\to K^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ in the $K_{0,2}^{\ast }(1430{)}^0$ region

Cited by in corpus (1)

• Model-independent observation of exotic contributions to $B^0\to J/\psi K^{+}{\pi }^{-}$ decays