Bose-Einstein correlations in one and two dimensions have been studied in deep inelastic ep scattering events measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb(-1). The correlations are independent of the virtuality of the exchanged photon, Q(2), in the range 0.1 < Q(2) < 8000 GeV(2). There is no significant difference between the correlations in the current and target regions of the Breit frame for Q(2) > 100 GeV(2). The two-dimensional shape of the particle-production source was investigated, and a significant difference between the transverse and the longitudinal dimensions of the source is observed. This difference also shows no Q(2) dependence. The results demonstrate that Bose-Einstein interference, and hence the size of the particle-production source, is insensitive to the hard subprocess.

Bose-Einstein correlations in one and two dimensions in deep inelastic scattering

BRUGNERA, RICCARDO;CARLIN, ROBERTO;GARFAGNINI, ALBERTO;A. Longhin;
2004

Abstract

Bose-Einstein correlations in one and two dimensions have been studied in deep inelastic ep scattering events measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb(-1). The correlations are independent of the virtuality of the exchanged photon, Q(2), in the range 0.1 < Q(2) < 8000 GeV(2). There is no significant difference between the correlations in the current and target regions of the Breit frame for Q(2) > 100 GeV(2). The two-dimensional shape of the particle-production source was investigated, and a significant difference between the transverse and the longitudinal dimensions of the source is observed. This difference also shows no Q(2) dependence. The results demonstrate that Bose-Einstein interference, and hence the size of the particle-production source, is insensitive to the hard subprocess.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2500509
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