Correlations between the identical. pi. /sup -/ mesons produced in. pi. /sup -/A collisions at 3. 7 GeV/c

The correlations between identical ..pi../sup -/ mesons produced in the reactions ..pi../sup -/A..--> pi../sup -/..pi../sup -/..pi../sup +/(p)+X (A is a nucleus of Al, Cu, or Pb) have been studied at an incident ..pi../sup -/ momentum of 3.7 GeV/c. The space--time characteristics of the interaction region, i.e., the characteristic dimensions and lifetime of the excited region which emits the ..pi../sup -/ mesons, have been determined.