Nucleon-nucleon momentum correlation function for light nuclei

Abstract

Nucleon-nucleon momentum correlation function have been presented for nuclear reactions with neutron-rich or proton-rich projectiles using a nuclear transport theory, namely Isospin-Dependent Quantum Molecular Dynamics model. The relationship between the binding energy of projectiles and the strength of proton-neutron correlation function at small relative momentum has been explored, while proton-proton correlation function shows its sensitivity to the proton density distribution. Those results show that nucleon-nucleon correlation function is useful to reflect some features of the neutron- or proton-halo nuclei and therefore provide a potential tool for the studies of radioactive beam physics.Comment: Talk given at the 18th International IUPAP Conference on Few-Body Problems in Physics (FB18), Santos, Brasil, August 21-26, 2006. To appear in Nucl. Phys.

An energy sum constraint of event mixing for Bose-Einstein correlations in reactions with ππ X final states around 1 GeV

“…The main reason for this is that the event mixing method [5,6] used for BEC measurement is strongly disturbed by non-BEC factors such as global conservation laws and resonance decays [7,8]. Unlike BEC measurements in high-energy elementary-particle collisions [9][10][11][12][13][14][15][16][17][18][19] and relativistic heavy-ion collisions [20][21][22][23][24][25][26][27][28][29] with large multiplicity, significant kinematical correlations of final state particles for exclusive reactions with only two identical bosons at low energies resulting from conservation laws complicate the BEC observation [30][31][32].…”

An Event Mixing Method with Invariant-mass/energy Hierarchy Correspondence cut for Bose--Einstein Correlations in $\pi \pi X$ System

“…Bose-Einstein correlations (BEC) [1,2], generally applied in high-energy elementary particle collisions and relativistic heavy ion collisions for measuring space-time properties of particle production volume [3,4,5,6,7,8,9,10], can also be used in exclusive reactions with low multiplicity to measure the spatial extension of excited baryons generally decayed back to the ground states with two-meson emission, such as the reaction γp → N * → π 0 π 0 p at incident photon energies around 1 GeV. However, such studies are still unavailable, because the event mixing method [11,12] used for BEC measurement for low multiplicity reactions is strongly disturbed by global conservation laws and resonance decays [13,14] which may lead to significant non-BEC kinematical correlations of final state particles and make the BEC observation more complicated.…”