6533b86cfe1ef96bd12c8a53

RESEARCH PRODUCT

Long-range correlations in the pionization component

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Recen t ly I S R measuremen t s (1,2) of corre la t ions be tween a p ion in t he p la teau (lY=I 0 . 2 ) have been carr ied out . A typ ica l resul t is a corre la t ion func t ion which (if one holds y= fixed and the t ransverse m o m e n t u m of t he p ro ton < 1 GeV/c) has a pos i t ive va lue a t smal ler x, a zero at about x = 0.5, a rough ly cons tan t nega t ive va lue for 0.5 < x < 0.8 and approaches a large nega t ive va lue for x close to 1 (see below). In the fol lowing we shall quan t i t a t i ve ly expla in this s t ruc tu re in t e rms of a mode l which essent ial ly amoun t s to pu t t i ng f ini te-energy correct ions to a mul t ipe r iphe ra l c luster model . I n t he two-componen t p i o n i z a t i o n + d i f f r a c t i o n p ic tu re (a) for pp collisions we can wri te t he s t andard p ion-nucleon cor re la t ion func t ion in t he fo rm