科研之友
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摘要
An experiment is proposed aiming at the unambiguous detection of mass A = 2 neutral particles via elastic scattering and neutron exchange reactions on protons in a plastic scintillating fibre detector. Di-neutrons would be produced in ordinary pi (-) absorption at rest on He-3 together with tagging protons. The basic advantages of the proposed process are the strict collinearity and opposite, and constant momenta of hypothetical di-neutrons and recoiling particles in the LAB reference frame. Moreover, the detection cross sections ((2) n + p -> p + (2) n; (2) n + p -> d + n) are calculable with three-nucleon codes based on (1) a (nn) dependent nn interactions.
- 出版日期2014-8
