Application of the Two-Scale Model to the HERMES Data on Nuclear Attenuation

Abstract

The Two-Scale Model and its improved version were used to perform the fit to the HERMES data for $\nu$ (the virtual photon energy) and z (the fraction of $\nu$ carried by hadron) dependencies of nuclear multiplicity ratios for ${\pi }^{+}$ and ${\pi }^{-}$ mesons electro-produced on two nuclear targets (${}^{14}$N and ${}^{84}$Kr). The quantitative criterium ${\chi }^2$ was used for the first time to analyse the results of the model fit to the nuclear multiplicity ratios data. The two-parameter's fit gives satisfactory agreement with the HERMES data. Best values of the parameters were then used to calculate the $\nu$- and $z$ - dependencies of nuclear attenuation for ${\pi }^0$, K${}^{+}$, K${}^{-}$ and $\bar{p}$ produced on ${}^{84}$Kr target, and also make a predictions for $\nu$, z and the Q${}^2$ (the photon virtuality) - dependencies of nuclear attenuation data for those identified hadrons and nuclea, that will be published by HERMES.

References in corpus (1)

• Quark fragmentation to ${\pi }^{\pm }$, ${\pi }^0$, $K^{\pm }$, $p$ and $\bar{p}$ in the nuclear environment

Cited by in corpus (14)

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• Determination of electron-nucleus collision geometry with forward neutrons
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• Simple parameterization of nuclear attenuation data
• Possible influence of the two string events on the hadron formation in a nuclear environment
• Hadron formation in semi-inclusive deep inelastic lepton-nucleus scattering
• Nuclear Attenuation of high energy two-hadron system in the string model
• Study of the hadronization process in cold nuclear medium
• Average formation length in string model
• Atomic mass dependence of hadron production in semi-inclusive deep inelastic lepton-nucleus scattering
• Formation lengths of hadrons in lepto-production
• Nuclear attenuation of high energy multi-hadron systems in the string model