TY  - JOUR
A1  - Vovchenko, Volodymyr
A1  - Dönigus, Benjamin
A1  - Kardan, Behruz
A1  - Lorenz, Manuel
A1  - Stöcker, Horst
T1  - Feeddown contributions from unstable nuclei in relativistic heavy-ion collisions
T2  - Physics Letters B.
N2  - We estimate the feeddown contributions from decays of unstable A=4 and A=5 nuclei to the final yields of protons, deuterons, tritons, 3He, and 4He produced in relativistic heavy-ion collisions at sNN>2.4 GeV, using the statistical model. The feeddown contribution effects do not exceed 5% at LHC and top RHIC energies due to the large penalty factors involved, but are substantial at intermediate collision energies. We observe large feeddown contributions for tritons, 3He, and 4He at sNN≲10 GeV, where they may account for as much as 70% of the final yield at the lower end of the collision energies considered. Sizable (>10%) effects for deuteron yields are observed at sNN≲4 GeV. The results suggest that the excited nuclei feeddown cannot be neglected in the ongoing and future analysis of light nuclei production at intermediate collision energies, including HADES and CBM experiments at FAIR, NICA at JINR, RHIC beam energy scan and fixed-target programmes, and NA61/SHINE at CERN. We further show that the freeze-out curve in the T-μB plane itself is affected significantly by the light nuclei at high baryochemical potential.
KW  - statistical model
KW  - light nuclei production
KW  - excited nuclei
Y1  - 2020
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/55317
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-553174
SN  - 1873-2445
SN  - 0370-2693
VL  - 809
IS  - 135746
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  -