First results on the energy scan of the vector Ay and tensor Ayy and Axx analyzing powers in deuteron-proton elastic scattering at Nuclotron11Dedicated to the memory of Prof. L.S.Zolin

V P Ladygin,T Uesaka,Yu V Gurchin,J-T Karachuk,A V Averyanov,S M Piyadin,P K Kurilkin,A A Terekhin,D O Krivenkov,A V Tishevsky,N B Ladygina,Ya T Skhomenko,E V Chernykh,D Enache,S G Reznikov,A N Khrenov,A N Livanov,A Yu Isupov,M Janek

doi:10.1088/1742-6596/938/1/012007

Abstract

New results on the vector Ay and tensor Ayy and Axx analyzing powers in deuteron-proton elastic scattering obtained at Nuclotron in the energy range 400-1800 MeV are presented. These data have been obtained in 2016-2017 at DSS setup at internal target station using polarized deuteron beam from new source of polarized ions. The preliminary data on the deuteron analyzing powers in in the wide energy range demonstrate the sensitivity to the short-range spin structure of the nucleon-nucleon correlations.

Highlights

One of the tools to investigate the equation-of-state (EOS) of dense nuclear matter is the study of the short range correlations (SRC) of nucleons in nuclei which is the subject of intensive theoretical and experimental works during last years
The results obtained at BNL [2], SLAC [3] and JLAB [4, 5] clearly demonstrate that more than 90% all nucleons with momenta k ≥ 300 MeV/c belong to 2N SRC; the probability for a given proton with momenta 300 ≤ k ≤ 600 MeV/c to belong to pn correlation is ∼18 times larger than for pp correlations; the probability for a nucleon to have momentum ≥ 300 MeV/c in medium nuclei is ∼25%; 3N SRC are present in nuclei with a significant probability [6]
In this paper we report new results of the energy scan of the vector Ay and tensor Ayy and Axx analyzing powers in dp- elastic scattering obtained at the Nuclotron internal target station (ITS) [10] in the energy range of 400-1800 MeV

Summary

Introduction

One of the tools to investigate the equation-of-state (EOS) of dense nuclear matter is the study of the short range correlations (SRC) of nucleons in nuclei which is the subject of intensive theoretical and experimental works during last years. The main goal of the Deuteron Spin Structure (DSS) experimental program is to obtain the information on the spin - dependent parts of two-nucleon (2N ) and three-nucleon (3N ) forces from two processes: dp- elastic scattering in a wide energy range and dp- nonmesonic breakup with two protons detection at energies 300 – 500 MeV [7, 8, 9] using the Nuclotron internal target station (ITS) [10]. In this paper we report new results of the energy scan of the vector Ay and tensor Ayy and Axx analyzing powers in dp- elastic scattering obtained at the Nuclotron ITS [10] in the energy range of 400-1800 MeV

Experimental setup at ITS

Findings

Conclusions