Influence of anisotropic Λ/Σ creation on the Ξ− multiplicity in subthreshold proton–nucleus collisions

Zétényi, M.; Wolf, Gy.

doi:10.1016/j.physletb.2018.08.054

Cited by 12 publications

(10 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A similar enhancement observed in the p+ Nb system points to effects appearing already in cold nuclear matter [27]. Production on correlated nucleon pairs or excitation of higher mass resonances with a significant decay branch to KK have been considered as possible explanations [28,29]. This reaction is just one example illustrating the importance of the data on double-strange hyperon production in nucleon-nucleon interactions close to the production threshold.…”

Section: Introductionmentioning

confidence: 80%

Production and electromagnetic decay of hyperons: a feasibility study with HADES as a phase-0 experiment at FAIR

et al. 2021

View full text Add to dashboard Cite

A feasibility study has been performed in order to investigate the performance of the HADES detector to measure the electromagnetic decays of the hyperon resonances $$\Sigma (1385)^{0}$$ Σ ( 1385 ) 0 , $$\Lambda (1405)$$ Λ ( 1405 ) and $$\Lambda (1520)$$ Λ ( 1520 ) as well as the production of double strange baryon systems $$\Xi ^{-}$$ Ξ - and $$\Lambda $$ Λ $$\Lambda $$ Λ in p + p reactions at a beam kinetic energy of $$4.5\,{\mathrm{GeV}}$$ 4.5 GeV . The existing HADES detector will be upgraded by a new Forward Detector, which extends the detector acceptance into a range of polar angles that plays a crucial role for these investigations. The analysis of each channel is preceded by a consideration of the production cross-sections. Afterwards the expected signal count rates using a target consisting of either liquid hydrogen or polyethylene are summarized.

show abstract

Section: Introductionmentioning

confidence: 80%

Production and electromagnetic decay of hyperons: a feasibility study with HADES as a phase-0 experiment at FAIR

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Proton-proton reactions at 4.5 GeV can also be used to elucidate the Ξ − (1321) production mechanism. An unexpectedly large sub-threshold production of the Ξ − resonance has indeed been measured in ArKCl and pNb reactions ( [2] and references therein) and reference measurements in the nucleon-nucleon system are needed to test possible explanations related to the contribution of high mass resonances [33]. The Ξ − is identified via its decay into Λ and π − pair, with the subsequent decay of the Λ into a pπ − pair.…”

Section: Future Hyperon Studiesmentioning

confidence: 98%

Time-Like Baryon Transitions studies with HADES

et al. 2019

View full text Add to dashboard Cite

The HADES collaboration uses the e+e− production as a probe of the resonance matter produced in collisions at incident energies of 1-3.5 GeV/nucleon at GSI. Elementary reactions provide useful references for these studies and give information on resonance Dalitz decays (R→Ne+e−). Such processes are sensitive to the structure of time-like electromagnetic baryon transitions in a kinematic range where (off-shell) vector mesons play a crucial role. Results obtained in proton-proton reactions and in a commissioning pion-beam experiment are reported and prospects for future pion beam experiments and for first hyperon Dalitz decay measurements are described. The connection with the investigations of medium effects to be continued with HADES in the next years at SIS18 and SIS100 is also discussed.

show abstract

“…Associations of the single strangeness kaon meson with the EoS have been extensively studied in the literature [8,[12][13][14][15][16]. The single strangeness Λ hyperons have been measured by the E895 and FOPI Collaborations [17][18][19], while the double strangeness Ξ − production in heavy-ion collisions has been studied extensively in the last twenty years [20][21][22][23][24][25][26][27][28][29][30]. However, their connections to the dense nuclear EoS are less studied.…”

mentioning

confidence: 99%

Double strangeness $Ξ^{-}$ production as a probe of nuclear equation of state at high densities

Yong,

Xiao,

Gao

et al. 2021

Preprint

View full text Add to dashboard Cite

Double strangeness Ξ − production in Au+Au collisions at 2, 4, and 6 GeV/nucleon incident beam energies is studied with the pure hadron cascade version of a multi-phase transport model. It is found that due to larger nuclear compression, the model with the soft equation of state (EoS) gives larger yields of both single strangeness (K + and Λ + Σ 0 ) and double strangeness Ξ − . The sensitivity of the double strangeness Ξ − to the EoS is evidently larger than that of K + or Λ + Σ 0 since the phase-space distribution of produced Ξ − is more compact compared to those of the single strangeness. The larger sensitivity of the yields ratio of Ξ − to the EoS from heavy and light systems is kept compared to that of the single strangeness. The study of Ξ − production in relativistic heavy-ion collisions provides an alternative for the ongoing heavy-ion collision program at facilities worldwide for identifying the EoS at high densities, which is relevant to the investigation of the phase boundary and onset of deconfinement of dense nuclear matter.

show abstract

Influence of anisotropic Λ/Σ creation on the Ξ− multiplicity in subthreshold proton–nucleus collisions

Cited by 12 publications

References 29 publications

Production and electromagnetic decay of hyperons: a feasibility study with HADES as a phase-0 experiment at FAIR

Production and electromagnetic decay of hyperons: a feasibility study with HADES as a phase-0 experiment at FAIR

Time-Like Baryon Transitions studies with HADES

Double strangeness $Ξ^{-}$ production as a probe of nuclear equation of state at high densities

Contact Info

Product

Resources

About