Effects of N$^{*}$(1440) resonance on subthreshold kaon, antikaon and antiproton production
| dc.creator | Li, Bao-An | |
| dc.creator | Ko, Che Ming | |
| dc.creator | Li, Guoqiang | |
| dc.date | 1994-04-30 | |
| dc.date.accessioned | 2026-07-07T05:41:21Z | |
| dc.date.available | 2026-07-07T05:41:21Z | |
| dc.description | We study the effects of $N^{*}(1440)$ resonance on the production of kaons, antikaons and antiprotons in heavy-ion collisions at subthreshold energies. Using free-space widths for the $Δ(1232)$ and the $N^{*}(1440)$ resonance and free-space thresholds for particle production, it is found that the $N^{*}$-baryon interactions contribute about 10\%, 25\% and 80\% to the yield of kaon, antikaon and antiproton, respectively. Doubling the widths of resonances due to possible medium effects, both the total and the $N^{*}$ induced antiproton yield decrease by about a factor of 3. Using a reduced antiproton production threshold in a nuclear medium as a result of dropping in-medium nucleon and antiproton masses, the total and the $N^{*}$ induced antiproton yield increase by a factor of 35 and 27, respectively, and the contribution of the $N^{*}$ induced collisions is reduced to about 50\% of the total. | |
| dc.description | 11 pages, 4 figures available from the authors upon request | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9404028 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9404028 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/82541 | |
| dc.subject | Nuclear Theory | |
| dc.title | Effects of N$^{*}$(1440) resonance on subthreshold kaon, antikaon and antiproton production | |
| dc.type | text |