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The differential cross section dσ/dΩ and analysing power Ay of the p→p→{pp}sπ0 reaction have been measured at COSY-ANKE at 353 MeV. The final proton pair was detected at very low excitation energy, leading to an S-wave diproton, denoted here as {pp}s. The angular dependence of both dσ/dΩ and Ay can be described in terms of s- and d-wave pion production. By using phase information from elastic pp scattering,...
In this Letter, we show that the distribution of the longitudinal momentum fraction of charged hadrons dN/dz inside jets stemming from proton–proton collisions at s=7 TeV center of mass energy can be described by a statistical jet-fragmentation model. This model combines microcanonical statistics and super-statistics induced by multiplicity fluctuations. The resulting scale dependence of the parameters...
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