Three-pion correlations in sulphur-lead collisions at the CERN SPS

H Boggild,J G Boissevain,Jeremy Dodd, S Esumi, C Fabjan,D Ferenc,A Franz,D Hardtke,H Van Hecke,T J Humanic, T Ikemoto,B V Jacak,H Kalechofsky,T Kobayashi,R A Kvatadze,Y Y Lee,M Leltchouk,B Lorstad,Narihiko Maeda,Y Miake,A Miyabayashi,Michael Murray,S Nagamiya,Susumu Nishimura,G Paic,S U Pandey,F Piuz, V Polychronakos,M Potekhin,G Poulard,D Rahm, J M Rieubland,A Sakaguchi,M Sarabura,K Shigaki, J Simongillo, J Schmidtsorensen,W E Sondheim, T Sugitate,J P Sullivan,Yasunori Sumi,W Willis

PHYSICS LETTERS B（1999）

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摘要

pi(+) pi(+) pi(+) correlations from sulphur-lead collisions at 200 GeV/c per nucleon are presented as measured by the focusing spectrometer of experiment NA44 at CERN. We have investigated the three-pion correlation function at mid-rapidity and found that a genuine three-body correlation is suppressed. A possible interpretation of this result is that the emission of particles is partially coherent. (C) 1999 Elsevier Science B.V. All rights reserved.

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