Simulating core excitation in breakup reactions of halo nuclei using an effective three-body force

We extend our previous calculation of the breakup 11Be using Halo Effective Field Theory and Dynamical Eikonal Approximation to include an effective 10Be-n-target force. The force is constructed account for virtual excitation 10Be its low-lying 2+ excited state. In case on a 12C target this improves description neutron-energy angular spectra, especially in vicinity 52+ By fine-tuning range parameters three-body force, reasonable data region 32+ state can also be obtained. This sensitivity force's results from structure overlap integral that governs s-to-d-state transitions which it induces.