Cross section fluctuations in hadronic nad nuclear collisions

20 May 2014, 16:30
spectrum (darmstadtium)



Board: I-34
Poster Correlations and Fluctuations Poster session


Maciej Rybczynski (Jan Kochanowski University (PL))


The nucleon-nucleon collision profile, being the basic entity of the wounded nucleon model, is usually adopted in the form of hard sphere or the Gaussian shape. It has been noticed recently [1] that the cross section fluctuations, given by the gamma distribution, lead to the profile function which smoothly ranges between the both, above mentioned, limiting forms. Nucleon-nucleon cross section fluctuations have been evaluated from the elastic differential cross section, multiplicity fluctuations and attenuation of cosmic rays. Energy dependence of cross section fluctuations has been compared with model predictions and other existing estimates. Examples of some initial state characteristics (fluctuations of target participants, cross sections dependence of mass number and energy, among others) of proton-nucleus and nucleus-nucleus collisions at wide range of center of mass energies demonstrating sensitivity on cross section fluctuations will be discussed. [1] M. Rybczynski and Z. Wlodarczyk, J. Phys. G41 (2014) 015106.

Primary author

Maciej Rybczynski (Jan Kochanowski University (PL))


Zbigniew Wlodarczyk (Jan Kochanowski University)

Presentation Materials