6533b826fe1ef96bd1284d36

RESEARCH PRODUCT

Observation of short-range 3-particle correlations in e(+)e(-) annihilations at lep energies

Delphi CollaborationMaría Victoria Castillo GiménezEduardo Cortina GilAntonio Ferrer SoriaJuan A. Fuster VerdúCarmen García GarcíaJuan José Hernández ReyEmilio Higón RodríguezCarlos Lacasta LlácerFernando Martínez VidalSalvador Martí GarcíaSergio Navas ConchaJosé Salt Cairols

subject

High Energy Physics::ExperimentFísica nuclearPartícules (Física nuclear)

description

\def\tpc{three-particle correlation} \def\twopc{two-particle correlation} Measurements are presented of short range three-particle correlations in e^+ e^- annihilations at LEP using data collected by the DELPHI detector. %The jet structure is studied using three-particle correlation functions. At small values of the four-momentum difference, strong three-particle correlations are observed for like-sign (+++ and ---) and for unlike-sign (++- and +--) pion combinations which are not a consequence of two-particle correlations. A possible explanation of the observed effects in like-sign combinations is the existence of higher order Bose-Einstein interference, which significantly changes the particle distributions in jets.

10.1016/0370-2693(95)00711-shttp://dx.doi.org/10.1016/0370-2693(95)00711-S