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Title: Three-nucleon force effects in cross section and spin observables of elastic deuteron-proton scattering at 90 MeV/nucleon

Abstract

The cross section and several spin-dependent observables have been measured with high precision for the reaction H(d(vector sign),p(vector sign))d at 90 MeV/nucleon. Several calculations were performed based either purely on two-nucleon potentials or also including three-nucleon potentials (3NP). The cross sections are consistent with all calculations including 3NPs. However, no single calculation reproduces the analyzing powers and spin-transfer coefficients, although some spin observables are reproduced to various degrees by the different calculations. A good understanding of the spin structure of 3NP is still lacking.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;  [1];  [2];  [1];  [3];  [4];  [5]
  1. Kernfysisch Versneller Instituut (KVI), University of Groningen, Zernikelaan 25, 9747 AA, Groningen (Netherlands)
  2. Centro de Fisica Nuclear da Universidade de Lisboa, Lisbon (Portugal)
  3. (Germany)
  4. RIKEN, Institute of Physical and Chemical Research, Wako, Saitama 351-0198 (Japan)
  5. Institute of Physics, Jagiellonian University, Cracow (Poland)
Publication Date:
OSTI Identifier:
20995185
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.75.041001; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CROSS SECTIONS; DEUTERONS; MASS NUMBER; MEV RANGE 10-100; NUCLEAR FORCES; NUCLEAR REACTIONS; NUCLEI; POLARIZATION-ASYMMETRY RATIO; POTENTIALS; PROTONS; SCATTERING; SPIN; VECTORS

Citation Formats

Amir-Ahmadi, H. R., Castelijns, R., Eslami-Kalantari, M., Garderen, E. D. van, Harakeh, M. N., Kalantar-Nayestanaki, N., Kis, M., Loehner, H., Mahjour-Shafiei, M., Mardanpour, H., Messchendorp, J. G., Mukherjee, B., Shende, S. V., Woertche, H. J., Deltuva, A., Savran, D., Institut fuer Kernphysik, Technische Universitaet Darmstadt, Darmstadt, Sekiguchi, K., and Witala, H. Three-nucleon force effects in cross section and spin observables of elastic deuteron-proton scattering at 90 MeV/nucleon. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.041001.
Amir-Ahmadi, H. R., Castelijns, R., Eslami-Kalantari, M., Garderen, E. D. van, Harakeh, M. N., Kalantar-Nayestanaki, N., Kis, M., Loehner, H., Mahjour-Shafiei, M., Mardanpour, H., Messchendorp, J. G., Mukherjee, B., Shende, S. V., Woertche, H. J., Deltuva, A., Savran, D., Institut fuer Kernphysik, Technische Universitaet Darmstadt, Darmstadt, Sekiguchi, K., & Witala, H. Three-nucleon force effects in cross section and spin observables of elastic deuteron-proton scattering at 90 MeV/nucleon. United States. doi:10.1103/PHYSREVC.75.041001.
Amir-Ahmadi, H. R., Castelijns, R., Eslami-Kalantari, M., Garderen, E. D. van, Harakeh, M. N., Kalantar-Nayestanaki, N., Kis, M., Loehner, H., Mahjour-Shafiei, M., Mardanpour, H., Messchendorp, J. G., Mukherjee, B., Shende, S. V., Woertche, H. J., Deltuva, A., Savran, D., Institut fuer Kernphysik, Technische Universitaet Darmstadt, Darmstadt, Sekiguchi, K., and Witala, H. Sun . "Three-nucleon force effects in cross section and spin observables of elastic deuteron-proton scattering at 90 MeV/nucleon". United States. doi:10.1103/PHYSREVC.75.041001.
@article{osti_20995185,
title = {Three-nucleon force effects in cross section and spin observables of elastic deuteron-proton scattering at 90 MeV/nucleon},
author = {Amir-Ahmadi, H. R. and Castelijns, R. and Eslami-Kalantari, M. and Garderen, E. D. van and Harakeh, M. N. and Kalantar-Nayestanaki, N. and Kis, M. and Loehner, H. and Mahjour-Shafiei, M. and Mardanpour, H. and Messchendorp, J. G. and Mukherjee, B. and Shende, S. V. and Woertche, H. J. and Deltuva, A. and Savran, D. and Institut fuer Kernphysik, Technische Universitaet Darmstadt, Darmstadt and Sekiguchi, K. and Witala, H.},
abstractNote = {The cross section and several spin-dependent observables have been measured with high precision for the reaction H(d(vector sign),p(vector sign))d at 90 MeV/nucleon. Several calculations were performed based either purely on two-nucleon potentials or also including three-nucleon potentials (3NP). The cross sections are consistent with all calculations including 3NPs. However, no single calculation reproduces the analyzing powers and spin-transfer coefficients, although some spin observables are reproduced to various degrees by the different calculations. A good understanding of the spin structure of 3NP is still lacking.},
doi = {10.1103/PHYSREVC.75.041001},
journal = {Physical Review. C, Nuclear Physics},
number = 4,
volume = 75,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}
  • High precision cross-section data of the deuteron-proton breakup reaction at 130 MeV are presented for 72 kinematically complete configurations. The data cover a large region of the available phase space, divided into a systematic grid of kinematical variables. They are compared with theoretical predictions, in which the full dynamics of the three-nucleon (3N) system is obtained in three different ways: realistic nucleon-nucleon (NN) potentials are combined with model 3N forces (3NF's) or with an effective 3NF resulting from explicit treatment of the Delta-isobar excitation. Alternatively, the chiral perturbation theory approach is used at the next-to-next-to-leading order with all relevant NNmore » and 3N contributions taken into account. The generated dynamics is then applied to calculate cross-section values by rigorous solution of the 3N Faddeev equations. The comparison of the calculated cross sections with the experimental data shows a clear preference for the predictions in which the 3NF's are included. The majority of the experimental data points is well reproduced by the theoretical predictions. The remaining discrepancies are investigated by inspecting cross sections integrated over certain kinematical variables. The procedure of global comparisons leads to establishing regularities in disagreements between the experimental data and the theoretically predicted values of the cross sections. They indicate deficiencies still present in the assumed models of the 3N system dynamics.« less
  • High-precision cross-section data of the deuteron-proton breakup reaction at 130 MeV are presented for 72 kinematically complete configurations. The data cover a large region of the available phase space, divided into a systematic grid of kinematical variables. They are compared with theoretical predictions, in which the full dynamics of the three-nucleon (3N) system is obtained in three different ways: realistic nucleon-nucleon (NN) potentials are combined with model 3N forces (3NF's) or with an effective 3NF resulting from explicit treatment of the {delta}-isobar excitation. Alternatively, the chiral perturbation theory approach is used at the next-to-next-to-leading order with all relevant NN andmore » 3N contributions taken into account. The generated dynamics is then applied to calculate cross-section values by rigorous solution of the 3N Faddeev equations. The comparison of the calculated cross sections with the experimental data shows a clear preference for the predictions in which the 3NF's are included. The majority of the experimental data points are well reproduced by the theoretical predictions. The remaining discrepancies are investigated by inspecting cross sections integrated over certain kinematical variables. The procedure of global comparisons leads to establishing regularities in disagreements between the experimental data and the theoretically predicted values of the cross sections. They indicate deficiencies still present in the assumed models of the 3N system dynamics.« less
  • Neutron-deuteron elastic scattering cross sections are calculated at different energies using modern nucleon-nucleon (NN ) interactions and the Tucson-Melbourne three-nucleon force adjusted to the triton binding energy. Predictions based on NN forces only underestimate nucleon-deuteron data in the minima at higher energies starting around 60thinspMeV. Adding the three-nucleon forces fills up those minima and reduces the discrepancies significantly. {copyright} {ital 1998} {ital The American Physical Society}
  • The cross sections and spin observables of the pd elastic scattering have been measured at 392 MeV. The results are compared with the prediction of Faddeev calculations with and without including a three nucleon force.