Abstract
Ion-ion collisions at relativistic energies have been shown recently to be a promising technique for the production of hypernuclei. In this article, we further investigate the production of light $\Lambda$ hypernuclei by use of a hybrid dynamical model, cascade-coalescence followed by Fermi breakup. The predictions are then compared with the available experimental data. The dependence of the production cross section upon the beam energy, beam mass number as well as different projectile-target combinations is investigated. In particular, we evaluate the yields and signal-over-background ratio in the invariant-mass spectrum for carbon projectiles impinging on hydrogen and carbon targets and various coincidence conditions in the experiment using the theoretical calculation as an input. It is found that comparing with carbon target, hydrogen target also leads to sizable hypernuclear yields, even for exotic species, and the hydrogen target could improve significantly signal-over-background ratio in some hypernuclear invariant mass studies.
Highlights
Hyperons (, ) are baryons containing at least one strange quark, unlike nucleons which are only composed of u and d valence quarks
We further investigate the production of light hypernuclei by use of a hybrid dynamical model: cascade coalescence followed by Fermi breakup
We present a series of calculations using the Dubna intranuclear cascade model followed by Fermi breakup to investigate theoretically the production of light hypernuclei
Summary
Hyperons ( , , , ) are baryons containing at least one strange quark, unlike nucleons (proton or neutron) which are only composed of u and d valence quarks. The glue-like role of the hyperon is expected to change the nuclear deformation [5,6], to lead to new excitation modes [6], and to shift the neutron and proton drip lines from their normal limits [7,8] They have been discovered to bind loosely unbound nuclei at the drip line,. The experiment successfully demonstrates the feasibility of producing hypernuclei in peripheral collisions Note that in this technique large fragments of projectile and target nuclei do not interact with each other intensively and form spectator residues, which might capture the hyperons if momentum matching allows. V, we comment on the signal-over-background ratio as a function of target-projectile combinations and particle coincidences in possible future experiments
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
