Evidence for a directional dependence of Bose-Einstein correlations at the CERN intersecting storage rings

T. Åkesson*, M. G. Albrow, S. Almehed, O. Benary, H. Bøggild, O. Botner, H. Breuker, V. Burkert, A. A. Carter, J. R. Carter, W. E. Cleland, S. Dagan, E. Dahl-Jensen, I. Dahl-Jensen, G. Damgaard, C. W. Fabjan, U. Goerlach, K. H. Hansen, V. Hedberg, G. JarlskogR. Kroeger, K. Kulka, D. Lissauer, B. Lörstad, A. Markou, N. A. McCubbin, U. Mjörnmark, R. Møller, W. Molzon, B. S. Nielsen, L. H. Olsen, Y. Oren, I. Stumer, M. Sullivan, J. A. Thompson, E. Vella, J. Williamson, W. J. Willis, W. A. Zajc

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In pp and pp̄ collisions at the CERN Intersecting Storage Rings, a directional dependence of the size of the pion-emitting region is observed using Bose-Einstein interference between identical charged pions. The data reveal a substantially larger dimension in the direction parallel to the beam axis than in the transverse direction, indicating a prolate shape of the emission region. For αα interactions, the data are consistent with a spherical shape.

Original languageEnglish
Pages (from-to)420-424
Number of pages5
JournalPhysics Letters B
Volume187
Issue number3-4
DOIs
StatePublished - 26 Mar 1987

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