https://doi.org/10.1140/epja/i2016-16350-4
Regular Article - Theoretical Physics
Effects of the high-momentum tail of nucleon momentum distribution on the isospin-sensitive observables
1
School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, China
2
Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, China
* e-mail: yonggaochan@impcas.ac.cn
Received:
2
August
2016
Accepted:
14
November
2016
Published online:
29
November
2016
Based on the Isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model, effects of the high-momentum tail (HMT) of nucleon momentum distribution in colliding nuclei on some isospin-sensitive observables are studied in the semi-central 197Au + 197Au reactions at incident beam energy of 400 MeV/nucleon. It is found that the nucleon transverse flow, the difference of neutron and proton transverse flows, the nucleon elliptic flow and the free neutron to proton ratio are all less sensitive to the HMT, while the isospin-sensitive nucleon elliptic flow difference is clearly affected by the HMT. Except at very high kinetic energies, the kinetic energy distributions of 
and charged pion ratio 
are all sensitive to the HMT.
© SIF, Springer-Verlag Berlin Heidelberg, 2016
