Scalar and vector self-energies of heavy baryons in nuclear medium

K. Azizi; N. Er; H. Sundu

doi:10.1016/j.nuclphysa.2017.02.007

paper

Scalar and vector self-energies of heavy baryons in nuclear medium

arXiv:1605.05535 · doi:10.1016/j.nuclphysa.2017.02.007

Abstract

The in-medium sum rules are employed to calculate the shifts in the mass and residue as well as the scalar and vector self-energies of the heavy $I^_{Q}, I^£_{Q}$ and $I^_{Q}$ baryons, with Q being $b$ or $c$ quark. The maximum shift in mass due to nuclear matter belongs to the $I^£_{c}$ baryon and it is found to be $I^ m_{I^£_{c}} = - 936 M e V$ . In the case of residue, it is obtained that the residue of $I^£_{b}$ baryon is maximally affected by the nuclear medium with the shift $I^ I^»_{I^£_{b}} = - 0.014 G e V^{3}$ . The scalar and vector self-energies are found to be $I^£_{I^_{b}}^{S} = 653 M e V$ , $I^£_{I^£_{b}}^{S} = - 614 M e V$ , $I^£_{I^_{b}}^{S} = - 17 M e V$ , $I^£_{I^_{c}}^{S} = 272 M e V$ , $I^£_{I^£_{c}}^{S} = - 936 M e V$ , $I^£_{I^_{c}}^{S} = - 5 M e V$ and $I^£^{I^} ½_{I^_{b}} = 436 \pm 148 M e V$ , $I^£^{I^} ½_{I^£_{b}} = 382 \pm 129 M e V$ , $I^£^{I^} ½_{I^_{b}} = 15 \pm 5 M e V$ , $I^£^{I^} ½_{I^_{c}} = 151 \pm 45 M e V$ , $I^£^{I^} ½_{I^£_{c}} = 486 \pm 144 M e V$ and $I^£^{I^} ½_{I^_{c}} = 1.391 \pm 0.529 M e V$ .

13 Pages, 11 Figures and 5 Tables