Regular Article - Theoretical Physics
The quasi-fission phenomenon of double charm induced by nucleon
Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, 210097, Nanjing, China
2 Lanzhou Center for Theoretical Physics, Lanzhou University, 730000, Lanzhou, China
3 School of Physical Science and Technology, Lanzhou University, 730000, Lanzhou, China
4 Key Laboratory of Theoretical Physics of Gansu Province, and Frontiers Science Center for Rare Isotopes, Lanzhou University, 730000, Lanzhou, China
5 Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, 730000, Lanzhou, China
Accepted: 22 April 2022
Published online: 30 April 2022
In this work, we study the reaction of a nucleon and a doubly charmed state . Under the assumption of the as a molecular state of , the reaction of the nucleon and is mediated by exchanges of , , , and meson, which results in split of state with two D mesons in final state. With the help of the effective Lagrangians, the cross section of 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 state is very easy to decay and transit to two D mesons. In the rest frame of the 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 state. This novel quasi-fission phenomenon of double charm molecular state induced by a proton can be accessible at High-Luminosity Large Hadron Collider.
© The Author(s) 2022
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