ϕ decay: A relevant source for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>K</mml:mi><mml:mrow><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>production at energies available at the GSI Schwerionen-Synchrotron (SIS)?

Agakishiev, G.; Bałanda, A.; Bannier, B.; Bassini, R.; Belver, D.; Belyaev, A.; Blanco, A.; Böhmer, M.; Boyard, J. L.; Braun‐Munzinger, P.; Cabanelas, P.; Castro, E.; Chernenko, S.; Christ, T.; Destefanis, M.; Díaz, Julio Pérez; Dohrmann, F.; Dybczak, A.; Eberl, T.; Fabbietti, L.; Fateev, O.; Finocchiaro, P.; Fonte, P.; Friese, J.; Fröhlich, I.; Galatyuk, T.; Garzón, J. A.; Gernhäuser, R.; Gil, A.; Gilardi, C.; Golubeva, M.; González-Díaz, D.; Guber, F.; Heilmann, Manuel; Heinz, T.; Hennino, T.; Holzmann, R.; Ierusalimov, A.; Iori, I.; Ivashkin, A.; Jurković, M.; Kämpfer, B.; Kanaki, K.; Karavicheva, T.; Kirschner, D.; Köenig, I.; Koenig, W.; Kolb, B. W.; Kötte, R.; Křížek, F.; Krücken, R.; Kühn, W.; Куглер, А.; Kurepin, A.; Lang, S.; Lange, J. S.; Lapidus, K.; Liu, T.; Lopes, L.; Lorenz, M.; Maier, L.; Mangiarotti, A.; Markert, J.; Metag, V.; Michalska, B.; Michel, J.; Mishra, D.; Morinière, E.; Mousa, J.; Müntz, C.; Naumann, L.; Otwinowski, J.; Pachmayer, Y.; Pałka, M.; Parpottas, Y.; Pechenov, V.; Pechenova, O.; Cavalcanti, T. Pérez; Pietraszko, J.; Przygoda, W.; Ramstein, B.; Reshetin, A.; Roy‐Stéphan, M.; Rustamov, A.; Sadovsky, A.; Sailer, B.; Salabura, P.; Schmah, A.; Schwab, E.; Sobolev, Yu. G.; Spataro, S.; Spruck, B.; Ströbele, H.; Stroth, J.; Sturm, C.; Sudol, M.; Tarantola, A.; Teilab, K.; Tlustý, P.; Traxler, M.; Trębacz, R.; Tsertos, H.; Wagner, V.; Weber, M.; Wiśniowski, M.; Wójcik, Tomasz; Wüstenfeld, J.; Yurevich, S.; Zanevsky, Y.; Zhou, Pei; Zumbruch, P.

doi:10.1103/physrevc.80.025209

Cited by 77 publications

(27 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[37]) and kinetic slope parameters in the range of 70-95 MeV [37], that is, of similar magnitude. In particular, the slope at midrapidity of the φ meson was found to be 84 ± 8 MeV in the K + K − channel [35]. Unfortunately, our statistics is not large enough to allow a tight selection around the ω pole mass and thus obtain the slope for a clean ω sample.…”

Section: Dielectron M ⊥ Distributionsmentioning

confidence: 90%

“…In particular, from our K + − K − correlation analysis [35], a LVL1 φ multiplicity of M φ = [2.6 ± 0.7(stat) ± 0.1(sys)] × 10 −4 has been found, as well as a transverse-mass slope at midrapidity of T φ = 84 ± 8 MeV. Together with the ω multiplicity, this gives a φ/ω ratio of R φ/ω = 0.043 +0.050 −0.015 (stat) ± 0.011(sys).…”

Section: High-mass Pairs From ω Decaysmentioning

confidence: 95%

“…The peak width is dominated by the HADES mass resolution σ/M at the ω pole mass of 3%. Finally, its integral has been corrected for the branching ratio of the direct e + e − decay [34] as well as for the acceptance of 0.29 (obtained from a Pluto simulation done for a thermal source with a temperature of T = 84 ± 2 MeV, as found in our φ → K + K − analysis [35] for the φ meson). This resulted in a normalized yield of N ω /N π 0 = (1.9 ± 0.8) × 10 −3 , corresponding to an ω LVL1 multiplicity of M LVL1 ω = (6.7 ± 2.8) × 10 −3 .…”

Section: High-mass Pairs From ω Decaysmentioning

confidence: 99%

See 2 more Smart Citations

Dielectron production in Ar + KCl collisions at 1.76AGeV

Agakishiev¹,

Bałanda²,

Belver³

et al. 2011

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

We present results on dielectron production in 40 Ar + KCl collisions at 1.76A GeV. For the first time ω mesons could be reconstructed in a heavy-ion reaction at a bombarding energy which is well below the production threshold in free nucleon-nucleon collisions. The ω multiplicity has been extracted and compared to the yields of other particles, in particular of the φ meson. At intermediate e + e − invariant masses, we find a strong enhancement of the pair yield over a reference spectrum from elementary nucleon-nucleon reactions, suggesting the onset of nontrivial effects of the nuclear medium. Transverse-mass spectra and angular distributions have been reconstructed in three invariant mass bins. In the former unexpectedly large slopes are found for high-mass pairs. The latter, in particular the helicity-angle distributions, are largely consistent with expectations for a pair cocktail dominated at intermediate masses by Dalitz decays.

show abstract

Section: Dielectron M ⊥ Distributionsmentioning

confidence: 90%

Section: High-mass Pairs From ω Decaysmentioning

confidence: 95%

Section: High-mass Pairs From ω Decaysmentioning

confidence: 99%

See 1 more Smart Citation

Dielectron production in Ar + KCl collisions at 1.76AGeV

Agakishiev¹,

Bałanda²,

Belver³

et al. 2011

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…26 represent the measurements for Au+Au collisions. This enhancement of the ratio was interpreted by the HADES [172] and FOPI collaborations as the evidence of a strong feed-down from the φ production to the K − production, down-scaling the importance of processes driven by strangeness-exchange, such as Λ + π → K − + N for the K − production [173,174]. This interpretation was also supported by the fact that, by looking at the p T distributions obtained for K + , K − and φ in Au + Au collisions at 1.23 AGeV measured by HADES and interpreting the slope of the spectra as kinematic temperatures, the K − slope resembles a mixture of K + and φ slopes, with weights consistent with the φ/K − ratio [170].…”

Section: Experimental Detection Of φ In Nuclear Mattermentioning

confidence: 98%

Strangeness in nuclei and neutron stars

Tolós

Fabbietti

2020

Progress in Particle and Nuclear Physics

Self Cite

173

View full text Add to dashboard Cite

We review the present status of the experimental and theoretical developments in the field of strangeness in nuclei and neutron stars. We start by discussing theKN interaction, that is governed by the presence of the Λ(1405). We continue by showing the two-pole nature of the Λ(1405), and the production mechanisms in photon-, pion-, kaon-induced reactions as well as proton-proton collisions, while discussing the formation ofKN N bound states. We then move to the theoretical and experimental analysis of the properties of kaons and antikaons in dense nuclear matter, paying a special attention to kaonic atoms and the analysis of strangeness creation and propagation in nuclear collisions. Next, we examine the φ meson and the advances in photoproduction, protoninduced and pion-induced reactions, so as to understand its properties in dense matter. Finally, we address the dynamics of hyperons with nucleons and nuclear matter, and the connection to the phases of dense matter with strangeness in the interior of neutron stars.

show abstract

“…From comparisons with transport-model simulations an average repulsive potential of 20 ± 5 MeV was inferred. The HADES Collaboration reported on a measurement of K 0 S in a mediumsized colliding system, Ar + KCl, at a beam energy of 1.76 GeV/nucleon [10] (see also [11] for the K + data). An average potential value of 39 +8 −2 MeV was inferred from these data.…”

Section: Introductionmentioning

confidence: 99%

Medium effects in proton-inducedK0production at 3.5 GeV

Agakishiev¹,

Arnold²,

Belver³

et al. 2014

Phys. Rev. C

Self Cite

View full text Add to dashboard Cite

We present the analysis of the inclusive K 0 production in p + p and p + Nb collisions measured with the HADES detector (GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt) at a beam kinetic energy of 3.5 GeV. Data are compared to the Giessen Boltzmann-Uehling-Uhlenbeck (GiBUU) transport model. The data suggest the presence of a repulsive momentum-dependent kaon potential as predicted by the chiral perturbation theory (ChPT). For the kaon at rest and at normal nuclear density, the ChPT potential amounts to ≈35 MeV. A detailed tuning of the kaon production cross sections implemented in the model has been carried out to reproduce the experimental data measured in p + p collisions. The uncertainties in the parameters of the model were examined with respect to the sensitivity of the experimental results from p + Nb collisions to the in-medium kaon potential.

show abstract

ϕ decay: A relevant source forK−production at energies available at the GSI Schwerionen-Synchrotron (SIS)?

Cited by 77 publications

References 58 publications

Dielectron production in Ar + KCl collisions at 1.76AGeV

Dielectron production in Ar + KCl collisions at 1.76AGeV

Strangeness in nuclei and neutron stars

Medium effects in proton-inducedK0production at 3.5 GeV

Contact Info

Product

Resources

About