The production of light(anti-)nuclei in high-energy collisions has long posed an apparent paradox:How can loosely bound systems such as the anti-deuteron with a binding energy of only 2.23 MeV be formed and survive in...The production of light(anti-)nuclei in high-energy collisions has long posed an apparent paradox:How can loosely bound systems such as the anti-deuteron with a binding energy of only 2.23 MeV be formed and survive in the extreme hot and dense hadronic environment emerging from proton–proton(pp)and heavy-ion collisions,where characteristic thermal energies exceed 100 MeV?A new femtoscopy analysis published on Nature[1]by the ALICE Collaboration at the Large Hadron Collider(LHC)delivers the clearest answer to date.展开更多
The measurement of momentum correlations of identical pions serves as a fundamental tool for probing the space-time properties of a particle-emitting source created in high-energy collisions.Recent experimental result...The measurement of momentum correlations of identical pions serves as a fundamental tool for probing the space-time properties of a particle-emitting source created in high-energy collisions.Recent experimental results have shown that in pp collisions,the size of the one-dimensional primordial source depends on the transverse mass(m_(T))of the hadron pairs,following a common scaling behavior similar to that observed in Pb-Pb collisions.In this study,a systematic analysis of the π-π source and correlation functions was performed using the multiphase transport model(AMPT)to understand the properties of the emitting source created in high-multiplicity pp collisions at√s=13 TeV.The mT-scaling behavior and pion emission source radii measured by the ALICE experiment can be described well by a model with a subnucleon structure.This work sheds new light on the effective size of the π-π emission source and the study of intensity interferometry in small systems using a transport model.展开更多
基金supported in part by the National Key Research and Development Project of China(No.2024YFA1612500)the National Natural Science Foundation of China(Nos.12422509,12375121,12547102)。
文摘The production of light(anti-)nuclei in high-energy collisions has long posed an apparent paradox:How can loosely bound systems such as the anti-deuteron with a binding energy of only 2.23 MeV be formed and survive in the extreme hot and dense hadronic environment emerging from proton–proton(pp)and heavy-ion collisions,where characteristic thermal energies exceed 100 MeV?A new femtoscopy analysis published on Nature[1]by the ALICE Collaboration at the Large Hadron Collider(LHC)delivers the clearest answer to date.
基金the National Natural Science Foundation of China(Nos.12061141008,12147101,and 12322508)the Science and Technology Commission of Shanghai Municipality(23590780100)+1 种基金LZ acknowledges the support of the Fundamental Research Funds for the Central UniversitiesChina University of Geosciences(Wuhan),with No.G1323523064.
文摘The measurement of momentum correlations of identical pions serves as a fundamental tool for probing the space-time properties of a particle-emitting source created in high-energy collisions.Recent experimental results have shown that in pp collisions,the size of the one-dimensional primordial source depends on the transverse mass(m_(T))of the hadron pairs,following a common scaling behavior similar to that observed in Pb-Pb collisions.In this study,a systematic analysis of the π-π source and correlation functions was performed using the multiphase transport model(AMPT)to understand the properties of the emitting source created in high-multiplicity pp collisions at√s=13 TeV.The mT-scaling behavior and pion emission source radii measured by the ALICE experiment can be described well by a model with a subnucleon structure.This work sheds new light on the effective size of the π-π emission source and the study of intensity interferometry in small systems using a transport model.
