Электронный каталог

Статья

Sharma, S.
J/*q Production in Proton-Proton Collisions at Spin Physics Detector Energies of the JINR Nuclotron-Based Ion Collider fAcility / S.Sharma, A.Aparin. – Text : electronic // Physical Review C. – 2026. – Vol. 113, No. 2. – P. L022201. – URL: https://doi.org/10.1103/xj4d-yqn7.

We investigate inclusive 𝐽/𝜓 production in proton-proton collisions at tens of GeV √𝑠 energy, relevant for forthcoming measurements with the Spin Physics Detector (SPD) at NICA. Simulations are performed using the PEGASUS event generator with transverse-momentum-dependent (TMD) gluon densities, comparing the recent KMR-based KL′⁢2025 and CCFM-based LLM′⁢2024 parametrizations. Differential cross sections in rapidity and transverse momentum exhibit smooth, stable behavior under renormalization-scale variation. Normalized 𝑝𝑇 spectra reveal distinct hardening patterns linked to the underlying gluon 𝑘&sub(𝑇) broadening in each model. The relative contributions of color-singlet and color-octet channels are also quantified, demonstrating the dominance of color-octet mechanisms in the SPD energy regime. These results provide the first detailed assessment of quarkonium production sensitivity to gluon TMDs near threshold, offering timely theoretical guidance for upcoming 𝐽/𝜓 measurements at SPD/NICA.



ОИЯИ = ОИЯИ (JINR)2026