Measurement of np elastic scattering at high energies and very small momentum transfers |
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| Authors: | A Arefiev A Babaev A Bamberger H-J Brundiers G Eliseev U Fischer D Friedrich Yu Galaktionov Yu Gorodkov R hartung W Heck Yu Kamyshkov V Lubimov R Maier V Plyaskin V Pojidaev K Runge O Schaile Ch Weber |
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| Institution: | 1. Institute of Theoretical and Experimental Physics (ITEP) Moscow, USSR;2. Freiburg University, Freiburg, BRD |
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| Abstract: | The np elastic differential cross section has been measured for incident neutron momenta 100–400 GeV/c in the |t| range 6 · 10?6 ? 5 · 10?1 (GeV/c)2. The np data of this experiment provide a first direct measurement of the hadronic amplitude for |t| < 10?2 (GeV/c)2, which is consistent with the extrapolations from higher |t| values. Our data for |t| < 10?4 (GeV/c)2 are consistent with a rise which can be attributed to Schwinger scattering, caused by the interaction of the neutron magnetic moment with the proton. |
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