LXXV International Conference «NUCLEUS – 2025. Nuclear physics, elementary particle physics and nuclear technologies»

Diquark role in large pT baryon and multiquark exotic state production with in pp- and dd-collisions

3 Jul 2025, 16:20

20m

90(3011) (Санкт-Петербургский Государственный Университет )

Oral Section 4. Relativistic nuclear physics, high-energy and elementary particle physics. 4. Relativistic nuclear physics, high-energy and elementary particle physics: Theory

Speaker

Andrei Zelenov (Petersburg Nuclear Physics Institute of NRC "Kurchatov Institute")

Description

Scalar diquark model of proton improved by parton intrinsic transverse momentum in hadrons is able to describe the strong scaling violation in proton production large transverse momentum p⊥ within perturbative QCD with higher twists in a wide energy range: √s = 11.5 GeV at U70 (NRC KI—IHEP, Protvino), √s = 23.4 GeV at Tevatron (FNAL, Chicago), and √s = 62 GeV at ISR (CERN, Geneva) is presented. Estimates for the production of tetraquark exotic states formed by scalar diquarks for the SPD experiment at the forthcoming NICA collider (JINR, Dubna) have been obtained.

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4. V. T. Kim, A.V. Zelenov, “Diquarks for large p(t) baryon production at high energy pp-collsions”, Phys. Part. Nucl. Lett. 22, 213–218 (2025).