ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Longitudinal correlations between pions inclusively produced in the target and beam fragmentation regions are studied in aK − p bubble chamber experiment at 32 GeV/c with a sensitivity of about 6.7 ev/μb. It was found that the $${{\tilde x_2 = x_2 } \mathord{\left/ {\vphantom {{\tilde x_2 = x_2 } {(1 - \left| {x_1 } \right|)}}} \right. \kern-\nulldelimiterspace} {(1 - \left| {x_1 } \right|)}}$$ distributions of charged pions with momentum fraction in the proton hemisphere with respect to a charged “trigger” pion with momentum fraction x1 do not show scaling, that those of the associated π1/π2 do not compare toK + p interactions and give indications for quark annihilation. The invariant two- and three pion longitudinal C.M. distributions show significant deviations from the naive quark recombination picture. Distinct long-range correlations observed between π− s from the proton fragmentation region and π+ s from theK − fragmentation region could imply contributions from quark exchange or quark annihilation mechanisms inK − p interactions at 32 GeV/c.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01577815
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