Direct experimental access to the early stages

The gap

Evidence profile

Sourced from the stated research gap and future-work section of the source papers, classified as general, spanning 3 journals.

Supporting evidence — 3 representative gaps

• Analysis of transverse momentum spectra and rapidity spectra of identifiable particles produced in Proton+Proton collisions at beam momenta from 20A to 158A GeV/c (2026) · Frontiers in Physics · doi

  Direct experimental access to the early stages and interior of heavy-ion collisions remains unattainable. Theoretical investigations into identified particles have intensified, focusing on observables such as transverse momentum and rapidity.

  generalstated research gap
  Keywords: direct experimental access early stages interior heavy-ion collisions
• The shape of differential radial flow v0(pT), not its zero-crossing, carries physical information (2026) · Nuclear Science and Techniques · doi

  Further study of the nature of radial flow in heavy-ion collisions is needed. Experimental verification of the results is required. The development of new methods for analyzing radial flow that account for global multiplicity fluctuations is necessary.

  generalfuture-work sectionevidence 5/5
  Keywords: further study nature radial flow heavy-ion collisions needed
• Longitudinal flow decorrelation in heavy-ion collision at RHIC energies using a multi-phase transport model (2026) · Modern Physics Letters A · doi

  Future studies can build upon the current study by measuring the longitudinal flow decorrelation parameters in other collision systems. Future studies can use the AMPT model to simulate heavy-ion collisions and measure the factorization ratios of the second and third order flow harmonics. Future studies can explore the properties of the QGP medium and the dynamics of heavy-ion collisions.

  generalfuture-work sectionevidence 5/5
  Keywords: future studies build upon current study measuring longitudinal

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