Signatures of Moat Regimes in Heavy-Ion Collisions

Pisarski, Robert D.; Rennecke, Fabian

doi:10.1103/PhysRevLett.127.152302

Signatures of Moat Regimes in Heavy-Ion Collisions

Robert D. Pisarski
(
- Brookhaven
)
,
Fabian Rennecke
(
- Brookhaven
)

Mar 11, 2021

5 pages

Published in:

Phys.Rev.Lett. 127 (2021) 15, 152302

Published: Oct 5, 2021

e-Print:

2103.06890 [hep-ph]

DOI:

10.1103/PhysRevLett.127.152302 (publication)

View in:

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Abstract: (APS)

Heavy-ion collisions at small beam energies have the potential to reveal the rich phase structure of QCD at low temperature and nonzero density. In this case spatially modulated regimes with a “moat” spectrum can arise, where the minimum of the energy is over a sphere at nonzero momentum. We show that if the matter created in heavy-ion collisions freezes out in such a regime, particle numbers and their correlations peak at nonzero, instead of zero, momentum. This effect is much more dramatic for multiparticle correlations than for single-particle spectra. Our results can serve as a first guideline for a systematic search of spatially modulated phases in heavy-ion collisions.

Note:

5 pages, 3 figures; matches the published version. v3: corrected acknowledgements for RDP

heavy ion: scattering
quantum chromodynamics: critical phenomena
finite temperature
freeze-out: surface
beam: energy
momentum dependence
particle number
energy spectrum
correlation
modulation

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