TY - JOUR
T1 - Measuring analyzing powers in the three-body break-up in the dd reaction using neutron detection with plastic scintillators
AU - Ramazani-Sharifabadi, R.
AU - Mahjour-Shafiei, M.
AU - Kalantar-Nayestanaki, N.
AU - Messchendorp, J. G.
AU - Ramazani-Moghaddam-Arani, A.
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025.
PY - 2025/4/25
Y1 - 2025/4/25
N2 - We report on the analysis of analyzing power measurements for coplanar configurations in the three-body breakup of deuteron-deuteron (dd) scattering obtained with a polarized deuteron beam with a kinetic energy of 130 MeV. This analysis includes both the 2H(d→,dp)n and 2H(d→,dn)p processes. To identify the processes of interest, we reconstruct the neutron kinematics from the time-of-flight data provided by the plastic scintillators of Big-Instrument for Nuclear-Polarization Analysis (BINA). The timing information is used to determine the neutrons’ positions. Also, time-of-flight data, coupled with the laws of momentum and energy conservation is use5Pd to accurately deduce the energy of the neutrons. Also, particle identification technique is used to identify the dn combination of the 2H(d→,dn)p break-up reaction from the pn combination. Each step is meticulously validated by utilizing the protons from the 2H(d→,dp)n reaction, which are analyzed as if they were neutrons in the 2H(d→,dn)p reaction. The results of the analyzing powers of the 2H(d→,dp)n break-up reaction obtained using the procedure of the neutron-kinematics reconstruction, discussed in this paper, are presented as an overall cross-check and compared with the conventional results presented in Ramazani-Sharifabadi et al. (Eur Phys J A 56:221, 2020). Within the error bars no significant disagreement are observed between the analyzing powers of 2H(d→,dp)n and 2H(d→,dn)p processes which confirms the charge symmetry of nuclear force.
AB - We report on the analysis of analyzing power measurements for coplanar configurations in the three-body breakup of deuteron-deuteron (dd) scattering obtained with a polarized deuteron beam with a kinetic energy of 130 MeV. This analysis includes both the 2H(d→,dp)n and 2H(d→,dn)p processes. To identify the processes of interest, we reconstruct the neutron kinematics from the time-of-flight data provided by the plastic scintillators of Big-Instrument for Nuclear-Polarization Analysis (BINA). The timing information is used to determine the neutrons’ positions. Also, time-of-flight data, coupled with the laws of momentum and energy conservation is use5Pd to accurately deduce the energy of the neutrons. Also, particle identification technique is used to identify the dn combination of the 2H(d→,dn)p break-up reaction from the pn combination. Each step is meticulously validated by utilizing the protons from the 2H(d→,dp)n reaction, which are analyzed as if they were neutrons in the 2H(d→,dn)p reaction. The results of the analyzing powers of the 2H(d→,dp)n break-up reaction obtained using the procedure of the neutron-kinematics reconstruction, discussed in this paper, are presented as an overall cross-check and compared with the conventional results presented in Ramazani-Sharifabadi et al. (Eur Phys J A 56:221, 2020). Within the error bars no significant disagreement are observed between the analyzing powers of 2H(d→,dp)n and 2H(d→,dn)p processes which confirms the charge symmetry of nuclear force.
UR - http://www.scopus.com/inward/record.url?scp=105004220982&partnerID=8YFLogxK
U2 - 10.1140/epja/s10050-025-01559-9
DO - 10.1140/epja/s10050-025-01559-9
M3 - Article
AN - SCOPUS:105004220982
SN - 1434-6001
VL - 61
JO - European Physical Journal A
JF - European Physical Journal A
IS - 4
M1 - 84
ER -