Details

Autor(en) / Beteiligte

• Ermisch, K.
• Amir-Ahmadi, H. R.
• Berg, A. M. van den
• Castelijns, R.
• Davids, B.
• Deltuva, A.
• Epelbaum, E.
• Glöckle, W.
• Golak, J.
• Harakeh, M. N.
• Hunyadi, M.
• Huu, M. A. de
• Kalantar-Nayestanaki, N.
• Kamada, H.
• Kiš, M.
• Mahjour-Shafiei, M.
• Nogga, A.
• Sauer, P. U.
• Skibiński, R.
• Witała, H.
• Wörtche, H. J.

Titel

Systematic investigation of three-nucleon force effects in elastic scattering of polarized protons from deuterons at intermediate energies

Ist Teil von

• Physical review. C, Nuclear physics, 2005-06, Vol.71 (6), Article 064004

Ort / Verlag

United States

Erscheinungsjahr

2005

Quelle

American Physical Society [PROLA]

Beschreibungen/Notizen

• The question, whether the high-quality nucleon-nucleon potentials can successfully describe the three-nucleon system, and to what extent three-nucleon forces (3NFs) play a role, has become very important in nuclear few-body physics. One kinematic region where effects because of 3NFs show up is in the minimum of the differential cross section of elastic nucleon-deuteron scattering. Another observable, which could give an indication about the contribution of the spin to 3NFs, is the vector analyzing power. To investigate the importance of 3NFs systematically over a broad range of intermediate energies, both observables of elastic proton-deuteron scattering have been measured at proton bombarding energies of 108, 120, 135, 150, 170, and 190 MeV, covering an angular range in the center-of-mass system between 30 deg. and 170 deg. The results show unambiguously the shortcomings of calculations employing only two-body forces and the necessity of the inclusion of 3NFs. They also show the limitations of the results of the present day models for few-nucleon systems at backward angles, especially at higher beam energies. New calculations based on chiral perturbation theory are also presented and compared with the data at the lowest energy.