Hadronic cross-section fluctuations and proton coherent diffractive dissociation on helium

Details Hadronic cross-section fluctuations and proton coherent diffractive dissociation on helium Hadronic cross-section fluctuations and proton coherent diffractive dissociation on helium

1995-06-14

arxiv.org/abs/nucl-th/9506010v1

Phys.Rev.C52:1189-1192,1995

Physics

Nuclear Physics

Nuclear Theory

10 pages, revtex

Scientific paper

10.1103/PhysRevC.52.R1189

The differential cross-section of inelastic coherent diffractive dissociation off nuclei $p~+~^4$He $\rightarrow X ~+ ~^4$He is expressed in terms of the relative cumulants of the cross-section distribution $P_N(\sigma)$. The theoretical result for the ratio $r=\Bigg(\frac{d\sigma_{diff}}{dt}\Bigg)^{pHe}_{t=0} \Bigg/ \Bigg(\frac{d\sigma_{diff}}{dt}\Bigg)^{pp}_{t=0}=6.8 \div 7.6$ is close to the value $r=7.1 \pm 0.75$ which we extracted from the FNAL data. These are the only $A>2$ data of this kind. The comparison provides the first confirmation of the cross-section fluctuation approach to the description of the absolute value of the inelastic diffraction cross-section off nuclei. It provides also a new constraint on the first 4 cumulants of the cross-section distribution.

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