Work

Double Parton Scattering Versus Jet Quenching

Year: 2024

Type: article

Abstract: A novel observable, the double nuclear modification factor, is proposed to probe simultaneously the initial and final state effects in nucleus–nucleus collisions. An interesting competition between the combinatorial enhancement in the double parton scattering and the suppression due to parton energy loss can be observed in the production rate of two hard particles. In particular, the production of $$J{\text{/}}\psi $$ mesons in association with a W boson is not suppressed but is enhanced in the region of moderate transverse momenta, unlike the case of unassociated (inclusive) $$J{\text{/}}\psi $$ production. At the same time, in the region of high enough transverse momenta the nuclear modification factor for associated $$J{\text{/}}\psi + W$$ production converges to that of unassociated $$J{\text{/}}\psi $$ .

Source: Journal of Experimental and Theoretical Physics Letters

DOI: 10.1134/s0021364024601064

Authors: S. P. Baranov, A. V. Lipatov, M. A. Malyshev, A. M. Snigirev

Institutions: P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Lomonosov Moscow State University, Joint Institute for Nuclear Research, Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Russian Science Foundation

Awards: G3037392893, G5123538135