Abstract
AbstractMotivated by the very recent observation of the $$B^+_c\rightarrow J/\psi +\pi ^+ +\pi ^0$$
B
c
+
→
J
/
ψ
+
π
+
+
π
0
decay using proton–proton collision data by the LHCb collaboration, we study the four-body angular distributions and the quantum entanglement effects in the $$B^+_c\rightarrow J/\psi +\pi ^+ +\pi ^0$$
B
c
+
→
J
/
ψ
+
π
+
+
π
0
associated with $$J/\psi \rightarrow \mu ^++\mu ^-.$$
J
/
ψ
→
μ
+
+
μ
-
.
The helicity angular distributions are given in the QCD effective theory and the von Neumann entropy is obtained in $$B^\pm _c\rightarrow J/\psi (\rightarrow \mu ^+\mu ^-)+\rho ^\pm (\rightarrow \pi ^\pm \pi ^0)$$
B
c
±
→
J
/
ψ
(
→
μ
+
μ
-
)
+
ρ
±
(
→
π
±
π
0
)
decay process.
Funder
Natural Science Foundation of Jiangsu Province
National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC