Light (anti-)nuclei and (anti-)hypertriton production in pp collisions at and 7 TeV
School of Mathematics and Physics, China University of Geosciences, 430074, Wuhan, China
2 Institute of Geophysics and Geomatics, China University of Geosciences, 430074, Wuhan, China
Accepted: 29 August 2020
Published online: 17 September 2020
Production of light (anti-)nuclei and (anti-)hypertriton within midrapidity () and GeV/c in pp interactions at = 0.90, 2.76 and 7 TeV is investigated by the dynamically constrained phase space coalescence model, combined with PACIAE model. The ALICE data for yields, ratios, as well as transverse momentum distributions of and d are well reproduced by the model simulations, meanwhile the three basic characters of , , , and are also predicted. Besides, we found the yields of light (anti-)nuclei produced are dependent upon their mass number A, namely, their yields sharply decrease with the increasing of A. The strangeness population factor is found to be about 0.7–0.8, and is comparable with the available experimental results.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2020