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Bose-Einstein correlations in pp collisions at 400 GeV/c
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| Abstract |
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| Bose-Einstein correlations among identically charged pions produced in pp collisions at 400 GeV/c are studied using the EHS spectrometer. Employing the Kopylov-Podgoretskii parametrization, the average size of the emitting region r(k) and its lifetime tau for pion production were determined to be r(k) = 1.71 +/- 0.04 fm and c-tau = 0.89 +/- 0.05 fm. The average size r(g) in terms of the Lorentz invariant Goldhaber parametrization was determined to be r(g) = 1.20 +/- 0.03 fm. A decrease of the size with increasing momentum of the pions was observed. The size and the incoherence parameter of the pion emitting region were determined as a function of the charged particle multiplicity and the momentum of the pions. Identified charged kaons were used to study Bose-Einstein correlations among identically charged kaons K+/- K+/-. The average size of the emitting region for kaon production was determined to be r(k) = 1.87 +/- 0.33 fm in terms of the Kopylov-Podgoretskii parametrization. A study of the influence of a reference sample is presented. | | |
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English
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Zeitschrift für Physik : C : particles and fields. - Berlin | |
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Berlin : 1992
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0170-9739
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54:1(1992), p. 21-32
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A1992HP40800003
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