Average formation length in string model

Abstract

The space-time scales of the hadronization process in the framework of string model are investigated. It is shown that the average formation lengths of pseudoscalar mesons, produced in semi-inclusive deep inelastic scattering (DIS) of leptons on different targets, depend from their electrical charges. In particular the average formation lengths of positively charged hadrons are larger than of negatively charged ones. This statement is fulfiled for all using scaling functions, for $z$ (the fraction of the virtual photon energy transferred to the detected hadron) larger than 0.15, for all nuclear targets and any value of the Bjorken scaling variable $x_{Bj}$. In all cases, the main mechanism is direct production of pseudoscalar mesons. Including in consideration additional mechanism of production in result of decay of resonances, leads to decrease of average formation lengths. It is shown that the average formation lengths of positively (negatively) charged mesons are slowly rising (decreasing) functions of $x_{Bj}$. The obtained results can be important, in particular, for the understanding of the hadronization process in nuclear environment.

References in corpus (5)

• Hadronization in semi-inclusive deep-inelastic scattering on nuclei
• Quark fragmentation to ${\pi }^{\pm }$, ${\pi }^0$, $K^{\pm }$, $p$ and $\bar{p}$ in the nuclear environment
• Atomic Mass Dependence of Hadron Production in Deep Inelastic Scattering on Nuclei
• Application of the Two-Scale Model to the HERMES Data on Nuclear Attenuation
• Simple parameterization of nuclear attenuation data

Cited by in corpus (3)

• Estimating the Color Lifetime of Energetic Quarks
• Average formation lengths of baryons and antibaryons in string model
• Formation lengths of hadrons in lepto-production