Scaling laws of elastic proton-proton scattering differential cross sections
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Astronomy & Astrophysics↗
Engineering topics
Praszałowicz, Michał (ORCID:0000000324739646)
Publications and source records attributed to Praszałowicz, Michał (ORCID:0000000324739646).
Doubly heavy tetraquarks in the chiral quark soliton model
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Landscape of heavy baryons from the perspective of the chiral quark-soliton model
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79 ASTRONOMY AND ASTROPHYSICS↗
Scaling properties of direct photon yields in heavy ion collisions
Abstract A recent analysis from the PHENIX collaboration of available direct photon measurement results in collisions of various systems such as Au+Au, Cu+Cu, and Pb+Pb, at different beam energies ranging from 39 to 2760 GeV, has shown a universal, within experimental uncertainties, multiplicity scaling, in which direct photon $$p_{T}$$ p T -spectra for transverse momenta up to 2 GeV/ c are scaled with charged hadron pseudorapidity density at midrapidity raised to power $$\alpha =1.25$$ α = 1.25 . On the other hand, those direct photon $$p_{T}$$ p T -spectra also exhibit geometrical scaling in the similar $$p_{T}$$ p T range. Assuming power-law dependence of the scaled photon spectra for both scaling laws, we formulate two independent conditions for the power $$\alpha $$ α , which overshoot experimental data by $$\sim 10\%$$ ∼ 10 % on average. We discuss possible sources that might improve this estimate.
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗