The quasi-fission phenomenon of double charm Tcc+ induced by nucleon

In this work, we study the reaction of a nucleon and a doubly charmed state T-cc(+). Under the assumption of the T-cc(+) as a molecular state of D* D, the reaction of the nucleon and T-cc is mediated by exchanges of pi, eta, rho, and omega meson, which results in split of T-cc state with two D mesons in final state. With the help of the effective Lagrangians, the cross section of p + T-cc(+) -> p + D+ + D-0 process is calculated, and a very large cross section can be obtained with very small incoming momentum of proton. It decrease rapidly with the increase of the momentum to about 10 mb at momenta of order of GeV. Such large cross section suggests that induced by a proton the T-cc(+) state is very easy to decay and transit to two D mesons. In the rest frame of the T-cc(+) state, an obvious accumulation of final D meson at small momentum region can be observed in predicted Dalitz plot, which is due to the molecular state interpretation of T-cc(+) state. This novel quasifission phenomenon of double charm molecular T-cc(+) state induced by a proton can be accessible at High-Luminosity Large Hadron Collider.

Automated summary

In this study, the reaction between a nucleon and a doubly charmed state T-cc(+) was investigated. The cross section of the p + T-cc(+) -> p + D+ + D-0 process was calculated, and it was observed that the T-cc(+) state can easily decay into two D mesons when induced by a proton.