scholarly journals In-medium effects in strangeness production in heavy-ion collisions at (sub)threshold energies

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Taesoo Song ◽  
Laura Tolos ◽  
Joana Wirth ◽  
Joerg Aichelin ◽  
Elena Bratkovskaya
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Strangeness Production ◽  
Medium Effects ◽  
Ion Collisions ◽  
Threshold Energies

scholarly journals ON pp → pKΛ, NKΣ, ppϕ — THE BASIC INGREDIENTS FOR STRANGENESS PRODUCTION IN HEAVY ION COLLISIONS

2008 ◽  
Vol 17 (09) ◽  
pp. 1753-1764 ◽  
Author(s):  
BING-SONG ZOU ◽  
JU-JUN XIE
Keyword(s):  
Heavy Ion Collisions ◽  
Strange Quark ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Strange Quark Matter ◽  
Strangeness Production ◽  
Proper Understanding ◽  
Nuclear Equation Of State ◽  
Ion Collisions ◽  
Threshold Energies

The strangeness production in heavy ion collisions was proposed to be probes of the nuclear equation of state, Kaon potential in nuclear medium, strange quark matter and quark-gluon plasma, etc. However, to act as reliable probes, proper understanding of the basic ingredients for the strangeness production, such as pp → pK+Λ, pp → ppϕ and pp → nK+Σ+ is necessary. Recent study of these reactions clearly shows that previously ignored contributions from the spin-parity 1/2- resonances, N*(1535) and Δ*(1620), are in fact very important for these reactions, especially for near-threshold energies. It is necessary to include these contributions for getting reliable calculation for the strangeness production in heavy ion collisions.

scholarly journals THE IMPACT OF KAON POLARIZATION IN NUCLEAR MATTER ON THE K− PRODUCTION IN HEAVY-ION COLLISIONS

1996 ◽  
Vol 05 (02) ◽  
pp. 313-328 ◽  
Author(s):  
E.E. KOLOMEITSEV ◽  
D.N. VOSKRESENSKY ◽  
B. KÄMPFER
Keyword(s):  
Nuclear Matter ◽  
Cross Sections ◽  
Heavy Ion Collisions ◽  
Particle Production ◽  
Heavy Ion ◽  
Strange Particle ◽  
Intermediate Energy ◽  
Medium Effects ◽  
Ion Collisions ◽  
The Impact

The impact of the kaon polarization in nuclear matter on the K− yield in intermediate-energy heavy-ion collisions is investigated. Our scenario of the strange particle production and dynamics is based on an expanding fireball model. This allows for a proper account of in-medium effects. A relation between observed K+ and K− yields is derived. Differential K− cross-sections are calculated and compared with available experimental data taken at various collision energies. It turns out that in-medium effects can modify the K− yields by factors 2 to 5 at beam energies between 2 and 1 AGeV.

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