Spectroscopy in beauty decays at the LHCb experiment

Abstract

The beauty hadron decays is unique laboratory to study charmonium and charmonium-like states, such as the ${\chi }_{c1}(3872)$ meson, other exotic states and the tensor D-wave ${\psi }_2(3823$) states. However the nature of many exotic charmonium-like candidates are still unknown. The most recent LHCb results related to b-hadron decays to charmonium states and obtained using large data samples collected during the Run 1 and Run 2 periods are presented. This includes the most precise determination of the mass and width of the ${\chi }_{c1}(3872)$ state using the $B^{+}\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}$ decays, observation of a resonant structure denoted as X(4740) in the $J/\psi \varphi$ mass spectrum from $B_s^0\to J/\psi {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$ decays and the precise measurement of the $B_s^0$ meson mass.

Talk at XXVII Cracow EPIPHANY Conference on future of particle physics

Cited by in corpus (1)

• Light meson emissions of the selected charmonium-like states within compact tetraquark configurations