Электронный каталог

Статья

Baranov, S.P.
Forward J/*q + J/*q and J/*q + *q' Production with High-Energy Factorization / S.P.Baranov, A.V.Lipatov, A.A.Prokhorov, [a.o.] // Physical Review D [Electronic resource]. – 2024. – Vol. 110, No. 5. – P. 054001. – URL: https://doi.org/10.1103/PhysRevD.110.054001. – Bibliogr.: 44.

We calculate the cross sections of associated 𝐽/𝜓+𝜓′ and 𝐽/𝜓+𝐽/𝜓 production in 𝑝⁢𝑝 collisions at √𝑠=13  TeV in the forward kinematic region. The high-energy factorization (𝑘&sub(𝑇)-factorization) framework supplemented with the Catani-Ciafaloni-Fiorani-Marchesini evolution of gluon densities in a proton is applied. We demonstrate that the latest data on 𝐽/𝜓+𝐽/𝜓 production and first experimental data on 𝐽/𝜓+𝜓′ events taken very recently by the LHCb Collaboration can be described well by the color singlet terms and contributions from double parton scattering (DPS) with the standard choice for 𝜎&sub(eff) parameter. The relative production rate 𝜎⁢(𝐽/𝜓+𝜓′)/𝜎⁢(𝐽/𝜓+𝐽/𝜓) is found to be sensitive to the DPS terms as well as to feeddown contributions.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 324.1д - Квантовая хромодинамика$
Бюллетени = 47/024