Hanbury-Brown–Twiss interferometry and collectivity in p+p, p+Pb, and Pb+Pb collisions

Hanbury Brown--Twiss interferometry (HBT) provides crucial insights into both the space-time structure and the momentum-space evolution of ultrarelativistic nuclear collisions at freeze-out. In particular, the dependence of the HBT radii on the transverse pair momentum $K_T$ and the system charged multiplicity $dN_{\mathrm{ch}}/d\eta$ may reflect the mechanisms driving collective behavior in small systems. This paper argues that certain features observed in the multiplicity dependence of the HBT radii can be naturally understood if small systems evolve hydrodynamically at high-multiplicity. This study thus establishes a baseline for the multiplicity dependence of HBT in hydrodynamics which may prove useful in discriminating between competing models of collectivity in nuclear collisions.

• Publication year

  2020

• Venue

  arXiv: Nuclear Theory

• Publication date

  2020-08-04

• Fields of study

  Physics

• Identifiers
  DOI 10.1103/PHYSREVC.102.054908arXiv 2008.01709
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  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

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• No concepts are published for this paper.

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