Speaker
Description
We study the formation of composite weekly bound particles with large transverse momentum by means of the coalescence mechanism in high-energy hadron collisions. We find the coalescence coefficient by calculating the corresponding Feynman diagrams near the kinematic boundary, taking into account the coherent nature of the process. In this approximation, we calculate the dependence of the coalescence coefficient on the emission angle and energy. We also present a physical interpretation of the obtained results.
At the nucleon level, the developed approach can be applied to describe the formation of light nuclear fragments with high transverse momentum, for example, the production of deuterons in dd collisions, which is relevant for the physics research program of SPD at NICA. At the quark level, this approach can be used to calculate Feynman diagrams describing the production of baryons with large transverse momenta near the kinematic boundary in high-energy pp and AA collisions due to the process of coherent coalescence of quarks, which is also relevant for the SPD and MPD experiments planned at the NICA collider.
The authors are grateful to Saint-Petersburg State University for research project 103821868.
