Momentum dependence of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>φ</mml:mi></mml:math>-meson nuclear transparency

Hartmann, Michael; Kiselev, Yu.T.; Polyanskiy, A.; Paryev, É. Ya.; Büscher, M.; Chiladze, D.; Dymov, S.; Dzyuba, A.; Gebel, R.; Hejny, V.; Kämpfer, B.; Keshelashvili, I.; Koptev, V.; Lorentz, B.; Maeda, Yoshikazu; Magas, V. K.; Merzliakov, S.; Mikirtytchiants, S.; Nekipelov, M.; Ohm, H.; Roca, L.; Schade, H.; Serdyuk, V.; Sibirtsev, A.; Sinitsyna, V. Y.; Stein, H. J.; Ströher, H.; Trusov, S.; Valdau, Yu.; Wilkin, C.; Wüstner, P.; Ye, Q. J.

doi:10.1103/physrevc.85.035206

Cited by 40 publications

(49 citation statements)

References 43 publications

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“…The φ production was also analyzed in proton-induced reactions off different nuclear targets by the ANKE collaboration. The p + A collisions at E beam = 2.83 GeV, with A = C, Cu, Ag, and Au, were measured at the COSY accelerator by the ANKE detector, and the final state φ → K + K − was studied [15]. The discussion of these results is presented in the next Sec.…”

Section: Experimental Detection Of φ In Nuclear Mattermentioning

confidence: 99%

“…The φ, in particular, is very narrow in vacuum and is well separated from the ρ and the ω mesons, allowing for the measurement of any modifications of its mass or width in matter. To that end, several experiments have been carried out, such for photoproduction [13,14], for proton-induced [15,16] and pion-induced [17] reactions, an effort that has been accompanied by important theoretical developments to understand the modifications of the φ meson in dense nuclear matter.…”

Section: Introductionmentioning

confidence: 99%

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Strangeness in nuclei and neutron stars

Tolós

Fabbietti

2020

Progress in Particle and Nuclear Physics

188

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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.

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Section: Experimental Detection Of φ In Nuclear Mattermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Strangeness in nuclei and neutron stars

Tolós

Fabbietti

2020

Progress in Particle and Nuclear Physics

188

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“…The ϕ production in nuclei has been intensively studied both experimentally [1][2][3][4], as well as in theoretical analyses [4][5][6][7][8]. The ϕ nuclear transparency ratio, measured in proton-induced and photoproduction experiments, points to a large absorption in nuclei, consistent with widths about one order of magnitude larger than the one from its dominant decay toKK in vacuum.…”

Section: Introductionmentioning

confidence: 95%

“…[3] widths of 23 − 100 MeV are reported, even for densities of only half the normal nuclear-matter density. Since the measurement of ϕ absorption with momentum binning has been made [4], theoretical calculations of the momentum dependence of the ϕ self-energy are also of great interest.…”

Section: Introductionmentioning

confidence: 99%

In-Medium Properties of the ϕ Meson with ϕ N Resonant Contributions

Cabrera¹,

Blin²,

Vacas³

2017

Proceedings of the 14th International Conference on Meson-Nucleon Physics and the Structure of the Nucleon (MENU2016)

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Nuclear production experiments report missing absorption processes of the in-medium ϕ meson. Contributions arising from theKK cloud have already been widely studied, and therefore we investigate the ϕ-meson's properties in cold nuclear matter with the additional inclusion of resonant ϕ N interactions. Two models are considered which dynamically generate N * -like states close to the ϕ N threshold. We find that these states, together with the non-resonant part of the amplitude, contribute to the ϕ self-energy with the same order of magnitude as theKK effects. At non-vanishing nuclear density, both models lead to an additional in-medium broadening of the ϕ, up to around 50 MeV. Furthermore, at least one of the models is compatible with a mass shift to lower energies of up to 35 MeV at threshold and normal matter density. Finally, a double-peak structure appears in the spectral function due to the mixing of resonance-hole modes with the ϕ quasi-particle peak. These results converge into the direction of the experimental findings.

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“…Previously, the φ production in nuclei was studied by the KEK-PS-E325 Collaboration [23], the LEPS Collaboration at Spring8/Osaka [24], the CLAS Collaboration at the Jefferson Lab [25], and very recently by the ANKE experiment at COSY-Jülich [27]. Together with theoretical predictions [26,27] on the nuclear transparency ratio it has been concluded that the φ experiences a huge absorption in nuclei, consistent with inelastic widths about one order of magnitude higher than its dominant decay in vacuum. These results point at medium effects typically larger than predicted by hadronic models, leaving room for additional interaction processes with the nuclear medium.…”

Section: Kn Interaction In Hot and Dense Nuclear Mattermentioning

confidence: 99%

S= −1 meson-baryon interaction in hot and dense nuclear matter: chiral symmetry, many-body and unitarization for a road to GSI/FAIR

Cabrera

Tolós

Aichelin

et al. 2015

EPJ Web of Conferences

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Abstract. The dynamics of strange pseudoscalar and vector mesons in hot and dense nuclear matter is studied within a chiral unitary framework in coupled channels. Our results set up the starting point for implementations in microscopic transport approaches of heavy-ion collisions, particularly at the conditions of the forthcoming experiments at GSI/FAIR and NICA-Dubna. In theKN sector we focus on the calculation of (off-shell) transition rates for the most relevant binary reactions involved in strangeness production close to threshold energies, with special attention to the excitation of sub-threshold hyperon resonances and isospin effects (e.g.K p vsKn). We also give an overview of recent theoretical developments regarding the dynamics of strange vector mesons (K * ,K * and φ) in the nuclear medium, in connection with experimental activity from heavy-ion collisions and nuclear production reactions. We emphasize the role of hadronic decay modes and the excitation of hyperon resonances as the driving mechanisms modifying the properties of vector mesons.

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Momentum dependence of theφ-meson nuclear transparency

Cited by 40 publications

References 43 publications

Strangeness in nuclei and neutron stars

Strangeness in nuclei and neutron stars

In-Medium Properties of the ϕ Meson with ϕ N Resonant Contributions

S= −1 meson-baryon interaction in hot and dense nuclear matter: chiral symmetry, many-body and unitarization for a road to GSI/FAIR

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