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Comparison of Fragmentation Properties in Diffractive and Non-Diffractive Deep-Inelastic scattering at HERA |
| Reference |
D.Traynor, presented at Photon 2001, July 2001 |
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Conference paper
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| Contact |
Daniel Traynor |
| Abstract |
Fragmentation measurements are presented for diffractive and non-diffractive deep inelastic ep scattering data in the Breit frame of reference. The rapidity spectra for the diffractive event selection clearly shows the expected suppression of tracks in the target hemisphere. The average charged multiplicity in the current hemisphere, , is shown to compare well with DIS at low beta and with e^+e^- at high beta. The evolution of the peak and width of the current hemisphere fragmentation functions for charged particles is studied as a function of photon virtuality, Q, and is found to agree with results obtained in non-diffractive deep inelastic scattering. Comparison with various models of diffraction are made with the resolved pomeron model (H1 fit 2) providing the best description of the data. |
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