Possible studies at the first stage of the NICA collider operation with polarized and unpolarized proton and deuteron beams

TL;DR

This paper proposes experimental studies at the initial phase of the NICA collider using polarized and unpolarized proton and deuteron beams to explore spin-dependent interactions, exotic states, and fundamental symmetries.

Contribution

It introduces specific experimental plans with the Spin Physics Detector at NICA to investigate spin effects, multiquark states, and T-invariance violation at low energies.

Findings

Potential to study spin dependence of NN interactions

Search for multiquark states at various thresholds

Test of the Standard Model via T-invariance violation

Abstract

This paper contains suggestions for experiments with usage of the Spin Physics Detector (SPD) at the first stage of the SPD NICA Programme developing at JINR. Double polarized pp-, dd- and pd- collisions at c.m.s. NN energies of 3.4-10 GeV, which will be accessible at the initial stage of experiments, allow one to study spin dependence of the NN interaction, search for multiquark states at double strangeness, charm and beauty thresholds, study the short-range structure of the deuteron. Double polarized pd scattering offer a possibility to test the Standard Model through the search for T-invariance violation.