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Nuclear attenuation of the multi-hadron systems in the string model is considered. The improved two-scale model with set of parameters obtained recently for the single hadron attenuation is used for calculation of the multiplicity ratios of…

High Energy Physics - Phenomenology · Physics 2013-05-29 L. Grigoryan

Nuclear attenuation of the two-hadron system is considered in the string model. The two-scale model and its improved version with two different choices of constituent formation time and sets of parameters obtained earlier for the single…

High Energy Physics - Phenomenology · Physics 2008-11-26 N. Akopov , L. Grigoryan , Z. Akopov

We present a detailed theoretical investigation of hadron attenuation in deep inelastic scattering (DIS) off complex nuclei in the kinematic regime of the HERMES experiment. The analysis is carried out in the framework of a probabilistic…

Nuclear Theory · Physics 2016-09-08 T. Falter , W. Cassing , K. Gallmeister , U. Mosel

We discuss nuclear modification of fragmentation functions in the context of the so-called ``rescaling models''. These models implement partial deconfinement inside nuclei by modifying the fragmentation functions perturbatively. We apply…

Nuclear Theory · Physics 2009-11-07 Alberto Accardi , Hans J. Pirner

We investigate hadron production in deep inelastic lepton-nucleus scattering in the kinematic regime of the HERMES experiment. Our calculations are carried out in the framework of a BUU transport model which contains the Lund event…

Nuclear Theory · Physics 2017-08-23 T. Falter , K. Gallmeister , U. Mosel

We investigate the attenuation of hadrons in deep inelastic lepton-nucleus scattering in the kinematical regime of the HERMES and Jefferson Lab experiments. The calculation is carried out in the framework of a BUU transport model. Our…

Nuclear Theory · Physics 2009-11-11 T. Falter , W. Cassing , K. Gallmeister , U. Mosel

Predictions for semi-inclusive deep inelastic lepton-nucleus scattering are presented. Both the effects of gluon radiation by the struck quark and the absorption of the produced hadron are considered. The gluon radiation covers a larger…

Nuclear Theory · Physics 2009-11-07 Alberto Accardi , Valeria Muccifora , Hans-Juergen Pirner

We investigate hadron attenuation in deep-inelastic lepton scattering off complex nuclei in the kinematic regime of the HERMES experiment. Our transport theoretical simulations reveal strong prehadronic final state interactions of the…

Nuclear Theory · Physics 2007-05-23 T. Falter , W. Cassing , K. Gallmeister , U. Mosel

To analyse ultrarelativistic nuclear interactions, usually either dynamical models like the string model are employed, or a thermal treatment based on hadrons or quarks is applied. String models encounter problems due to high string…

Nuclear Theory · Physics 2016-09-08 Klaus WERNER , Joerg AICHELIN

We investigate hadron formation in deep inelastic lepton scattering on N, Kr and Xe nuclei in the kinematic regime of the HERMES experiment. The elementary electron-nucleon interaction is described within the event generator PYTHIA while a…

Nuclear Theory · Physics 2009-11-10 T. Falter , W. Cassing , K. Gallmeister , U. Mosel

The influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep inelastic scattering has been studied by the HERMES experiment at DESY using 27.5 GeV positrons. A substantial reduction of the multiplicity of…

High Energy Physics - Experiment · Physics 2019-08-14 Valeria Muccifora

One of the basic assumptions of the string model is that as a result of a DIS in nucleus a single string arises, which then breaks into hadrons. However the pomeron exchange considered in this work, leads to the production of two strings in…

High Energy Physics - Phenomenology · Physics 2008-11-26 N. Akopov , L. Grigoryan , Z. Akopov

Nuclear model effects in neutrino-nucleus quasielastic scattering are studied within the distorted wave impulse approximation, using a relativistic shell model to describe the nucleus, and comparing it with the relativistic Fermi gas. Both…

Nuclear Theory · Physics 2007-05-23 Chiara Maieron

For the first time, the nuclear attenuation of three hadron systems is studied in neutrino-induced reactions using the data obtained with SKAT bubble chamber. The strongest attenuation (R_3 ~ 0.6) is observed for a system carrying an…

High Energy Physics - Experiment · Physics 2011-08-09 N. M. Agababyan , L. Grigorian , N. Grigoryan , H. Gulkanyan , A. A. Ivanilov , Zh. Karamyan , V. A. Korotkov

We propose a new criterium for saturation of the density of partons both in nucleons and nuclei. It is applicable to any multiple scattering model which would be used to compute the number of strings exchanged in $ep$ and $eA$ collisions.…

High Energy Physics - Phenomenology · Physics 2009-10-31 N. Armesto , C. A. Salgado

The influence of the nuclear medium on the production of charged hadrons in semi-inclusive deep-inelastic scattering has been studied by the HERMES experiment at DESY using a 27.5 GeV positron beam. The differential multiplicity of charged…

High Energy Physics - Experiment · Physics 2009-01-07 HERMES Collaboration , A. Airapetian

I review a recently proposed scaling analysis of hadron suppression in Deeply Inelastic Scattering on nuclear targets measured at the HERMES experiment. The analysis can distinguish 2 competing explanations for the observed suppression,…

Nuclear Theory · Physics 2008-11-26 Alberto Accardi

Hadron production in lepton-nucleus deep inelastic scattering is studied in an absorption model. In the proposed model, the early stage of hadronization in the nuclear medium is dominated by prehadron formation and absorption, controlled by…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Accardi , D. Grunewald , V. Muccifora , H. J. Pirner

Based on the nuclear attenuation data obtained by the HERMES experiment on nitrogen and krypton nuclei, it is shown that the nuclear attenuation $R_M^{h}$ can be parametrised in a form of a linear polynomial $P_1=a_{11}$ + $\tau a_{12}$,…

High Energy Physics - Phenomenology · Physics 2008-12-18 N. Akopov , L. Grigoryan , Z. Akopov

The improved two-scale model with symmetric Lund distribution function is used to perform the fit to the semi-inclusive deep-inelastic scattering (SIDIS) data on nuclear targets of HERMES experiment at DESY. The ratio of hadron multiplicity…

High Energy Physics - Phenomenology · Physics 2012-08-14 L. Grigoryan
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