The proton radius: From a puzzle to precision

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Hans-Werner Hammer , Ulf-G. Mei{ss}ner This is my paper · ORCID

classification hep-phhep-exhep-latnucl-exnucl-th

keywords protonradiuschargecommentdeterminationshistoryprecisionpuzzle

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We comment on the status and history of the proton charge radius determinations.

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Disentangling effects of nucleon size and nucleus structure in relativistic heavy-ion collisions
nucl-th 2025-04 conditional novelty 6.0 of 10

In AMPT simulations of 200 GeV Au+Au and O+O collisions, nucleon size smears deformation probes, but scaled v2 and scaled rho2 remain robust for deformation in heavy systems, while delta-pT fluctuation is a cleaner nu...