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Title: Entanglement enabled intensity interferometry in ultrarelativistic ultraperipheral nuclear collisions

Journal Article · · Physical Review Research

An important tool in studying the subfemtoscale spacetime structure of matter in ultrarelativistic heavy-ion collisions is Hanbury Brown–Twiss (HBT) intensity interferometry of identical particles in the final state of the collisions. We propose that a variant of the entanglement enabled intensity interferometry (𝐸2⁢𝐼2) framework introduced by Cotler and Wilczek can provide a powerful alternative to HBT interferometry in extracting fundamental nonperturbative features of quantum chromodynamics at high energies. We apply this framework to demonstrate that the spatial distributions of color singlet (pomeron) configurations in nuclei are sensitive to measurements of exclusive resonant decays of 𝜌 mesons into 𝜋± pairs in ultrarelativistic ultraperipheral nuclear collisions (UPCs) at the Relativistic Heavy Ion Collider and the Large Hadron Collider. A preliminary analysis suggests that the model-independent extraction of pomeron distributions will require careful treatment of the interplay of 𝐸2⁢𝐼2 in the vector meson exclusive decay with the incoherent cross section for exclusive vector meson production. The 𝐸2⁢𝐼2 framework developed here is quite general. It can also be employed as a tool to extract information on the spin structure of pomeron couplings as well as enhance the discovery potential for rare odderon configurations from exclusive vector meson decays into few-particle final states both in UPCs and at the Electron-Ion Collider.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Kent State University, OH (United States)
Sponsoring Organization:
NSF Nuclear Theory; Simons Foundation; US-Israel Binational Science Foundation; USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
FG02-89ER40531; SC0005131; SC0012704; SC0020081; SC0024189
OSTI ID:
2511185
Report Number(s):
BNL--227520-2025-JAAM; BNL-225884-2024-JAAM
Journal Information:
Physical Review Research, Journal Name: Physical Review Research Journal Issue: 1 Vol. 7; ISSN 2643-1564
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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