Scattering length measurements from radiative pion capture and neutron-deuteron breakup
The neutron-neutron and neutron-proton 1So scattering lengths ann and anp, respectively, were determined simultaneously from the neutron-deuteron breakup reaction. Their comparison with the recommended values obtained from "two-body" reactions gives a measure of the importance of three-nucleon force effects in the three-nucleon continuum. In order to check on the result obtained for ann from the "two-body" π--d capture reaction, a new measurement was performed at LANL. Preliminary results of the three experiments are given.
Tornow, W; Carman, TS; Chen, Q; Gibbs, WR; Gibson, BF; González Trotter, DE; Howell, CR; Hussein, AH; Mertens, G; Moore, CF; Morris, C; Obst, A; Pasyuk, E; Roper, CD; Salinas, F; Schmidt, D; Setze, HR; Slaus, I; Sterbenz, S; Tang, H; Walter, RL; Whiteley, CR; Witala, H; Zhou, Z
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