Speaker
Maciej Rybczynski
(Jan Kochanowski University (PL))
Description
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))
Co-author
Zbigniew Wlodarczyk
(Jan Kochanowski University)
