2020 Impact factor 4.590
Particles and Fields
Eur. Phys. J. C 7, 369-381
DOI 10.1007/s100529901067

Measurements of flavour-dependent fragmentation functions in ${\bf Z^{0} \rightarrow {\rm q}\bar{\rm q}}$ events

OPAL Collaboration

K. Ackerstaff$^{\rm 8}$ et al.

$^{\rm 8}$ CERN, European Organisation for Particle Physics, CH-1211 Geneva 23, Switzerland

Received: 29 May 1998 / Published online: 25 January 1999

Abstract
Fragmentation functions for charged particles in ${\rm Z}^{0}\rightarrow
{\rm q}\bar {\rm q}$ events have been measured for bottom (b), charm (c) and light (uds) quarks as well as for all flavours together. The results are based on data recorded between 1990 and 1995 using the OPAL detector at LEP. Event samples with different flavour compositions were formed using reconstructed ${\rm D}^{*\pm}$mesons and secondary vertices. The ${\xi_{\rm p}}=\ln(1/x_{\rm p})$distributions and the position of their maxima ${\xi_{0}}$ are also presented separately for uds, c and b quark events. The fragmentation function for b quarks is significantly softer than for uds quarks.


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