Abstract
The method of channels separation in particle-particle collisions is presented. The kinematical fit and weights for tracks combinations are used. The Kolmogorov criterion is applied to check agreement between experimental and theoretical χ 2 distributions. The investigations were made for data of np experiment in LHEP (JINR, Dubna) and for pp collisions in GSI (Darmstadt, Germany).
Highlights
The channel separation in many experiments in particle physics is often processed using value of a missing mass
1) kinematical parameters of particles are defined with a low precision 2) its values violate conservation laws 3) kinematical parameters of a neutral particle became inaccessible
The neutron channel [1] of the 1m-H2-bubble chamber of the LHEP [2] worked in 70-90 years
Summary
The channel separation in many experiments in particle physics is often processed using value of a missing mass. 1) kinematical parameters of particles are defined with a low precision 2) its values violate conservation laws 3) kinematical parameters of a neutral particle became inaccessible. All this reasons make difficult an estimation of cross section errors. The kinematical fit and the proposed weight method allow to separate reaction channels eliminating reasons mentioned above
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