Hanbury-Brown–Twiss signature for clustered substructures probing primordial inhomogeneity in hot and dense QCD matter

Fukushima, Kenji; Hidaka, Yoshimasa; Inoue, Katsuya; Shigaki, Kenta; Yamaguchi, Yorito

doi:10.1103/PhysRevC.109.L051903

Hanbury-Brown–Twiss signature for clustered substructures probing primordial inhomogeneity in hot and dense QCD matter

Kenji Fukushima
(
- Tokyo U.
)
,
Yoshimasa Hidaka
(
- Tokyo U. and
- KEK, Tsukuba and
- ERI, Tokyo and
- Sokendai, Tsukuba and
- Wako, RIKEN
)
,
Katsuya Inoue
(
- Hiroshima U. and
- Keio U. and
- Hiroshima U. (main)
)
,
Kenta Shigaki
(
- Keio U. and
- Hiroshima U. and
- Hiroshima U., GSIAS
)
,
Yorito Yamaguchi
(
- Hiroshima U. and
- Hiroshima U., GSIAS
)

Jun 30, 2023

5 pages

Published in:

Phys.Rev.C 109 (2024) 5, L051903

Published: May 7, 2024

e-Print:

2306.17619 [hep-ph]

DOI:

10.1103/PhysRevC.109.L051903 (publication)

Report number:

KEK-TH-2532,
J-PARC-TH-0290,
RIKEN-iTHEMS-Report-23

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Abstract: (APS)

We propose a novel approach to probe primordial inhomogeneity in hot and dense matter which could be realized in noncentral heavy-ion collisions. Although the Hanbury Brown and Twiss (HBT) interferometry is commonly used to infer the system size, the cluster size should be detected if substructures emerge in space. We demonstrate that a signal peak in the HBT two-particle correlation stands at the relative momentum corresponding to the spatial scale of pseudo one-dimensional modulation. We assess detectability using the data prepared by an event generator (AMPT model) with clustering implemented in the particle distribution.

Note:

5 pages, 4 figures

cluster: size
heavy ion: scattering
correlation: two-particle
dimension: 1
quantum chromodynamics: matter
Hanbury-Brown-Twiss effect
structure
Monte Carlo
modulation
interferometer

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