29th International Scientific Conference of Young Scientists and Specialists (AYSS-2025)

Dependence of the angular coefficients of $J/\psi$ mesons $A_{i}$ on the transverse momentum in pp collisions at $\sqrt{s_{NN}} = 10$ GeV using the Pythia model

27 Oct 2025, 18:30

2h

JINR International Conference Centre, 2 Stroiteley st.

Poster Elementary Particle Physics and High-Energy Heavy Ion Physics Poster session & Welcome drinks

Speaker

Mr Mikhail Bykovskii (National Research Nuclear University MEPhI)

Description

The angular distributions of Drell-Yan lepton pairs allow to determine precisely the dynamics of vector boson production in quantum chromodynamics. The dependence of the angular coefficients $A_{i}$ on the transverse momentum of $J/\psi$ mesons were obtained under the conditions of the first stage of the SPD experiment using the Pythia generator. The $J/\psi$ mesons produced in pp collisions at $\sqrt{s_{NN}} = 10$ GeV and decaying into a pair of muons were used in the analysis. The analysis is performed in the full phase space of decay muons. The angular coefficients are calculated in the $J/\psi$ mesons Collins-Soper reference frame.