Speaker
Description
An important tool in studying the sub-femtoscale spacetime structure of matter in ultrarelativistic heavy-ion collisions is Hanbury-Brown-Twiss (HBT) intensity interferometry of identical particles in the final state of such collisions. We propose that a variant of the entanglement enabled intensity interferometry (E2I2) framework introduced by Cotler and Wilczek can provide a powerful alter- native to HBT interferometry in extracting fundamental nonperturbative features of QCD 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 RHIC and the LHC. A preliminary analysis suggests that model-independent extract of pomeron distributions will require careful treatment of the interplay of E2I2 in the vector meson exclusive decay with the incoherent cross-section for exclusive vector meson production. The E2I2 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.
