Abstract

In bubble chamber experiments at intermediate and high energies, a large fraction of one constraint fit events cannot be identified unambiguously. Studying this problem from the kinematical point of view, we found that certain types of ambiguity can be related to well defined regions of laboratory momentum plots. A relation is given between the χ 2 of a fit and the square of the pull on the missing mass squared of the corresponding hypothesis. This feature is used to treat the ambiguities in a rigorous way. A computer program has been written, which calculates the fractions of events, corresponding to the different ambiguities. Methods are indicated to correct the cross sections.

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