Experimental and theoretical study of deuteron-proton elastic scattering for proton kinetic energies between $T_p = 882.2\;\textrm{MeV}$ and $T_p = 918.3\;\textrm{MeV}$

TL;DR

This study presents new precise measurements of deuteron-proton elastic scattering cross sections at energies around 900 MeV, and compares them with Glauber model predictions, enhancing understanding of nuclear interactions.

Contribution

It provides the first high-precision differential cross sections at these energies and tests the Glauber diffraction model with accurate nucleon-nucleon input.

Findings

Experimental cross sections agree with Glauber model at low momentum transfer.

Data covers proton energies from 882.2 MeV to 918.3 MeV.

Theoretical and experimental results align well at T_p = 900 MeV.

Abstract

New precise unpolarised differential cross sections of deuteron-proton elastic scattering have been measured at 16 different deuteron beam momenta between $p_d = 3120.17\;\textrm{MeV}/c$ and $p_d =3204.16\;\textrm{MeV}/c$ at the COoler SYnchrotron COSY of the Forschungszentrum J\"ulich. The data, which were taken using the magnetic spectrometer ANKE, cover the equivalent range in proton kinetic energies from $T_p = 882.2\;\textrm{MeV}$ to $T_p = 918.3\;\textrm{MeV}$. The experimental results are analysed theoretically using the Glauber diffraction model with accurate nucleon-nucleon input. The theoretical cross section at $T_p = 900\;\textrm{MeV}$ agrees very well with the experimental one at low momentum transfers $|t| <0.2\;(\textrm{GeV}/c)^2$.