Kaonic Deuterium Measurement with SIDDHARTA-2 on DA$\Phi $NE

Curceanu, C.; Amirkhani, A.; Baniahmad, A.; Bosnar, D.; Bragadireanu, M.; Carminati, Marco; Cargnelli, M.; Clozza, A.; Paolis, L. De; Grande, R. Del; Fabbietti, L.; Fiorini, C.; Ghio, F.; Guaraldo, C.; Iliescu, M.; Iwasaki, M.; Sandri, P. Levi; Márton, J.; Miliucci, M.; Moskal, P.; Niedźwiecki, Szymon; Okada, S.; Pietreanu, D.; Piscicchia, K.; Scordo, A.; Shi, H.; Silarski, M.; Sirghi, D.; Sirghi, F.; Skurzok, M.; Spallone, A.; Tatsuno, H.; Tüchler, M.; Doce, O. Vázquez; Widmann, E.; Zmeskal, J.

doi:10.5506/aphyspolb.51.251

Cited by 7 publications

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“…Two types of near future experiments are expected to become the driving force for the further progress of the field. First, there is an ongoing effort for an upgrade of the so-important SIDDHARTA KH experiment [69] to measure the spectrum of the Kd-system -the SIDDHARTA-2 experiment [89,90]. A comparable proposal exists for an experiment at J-PARC [91,92].…”

Section: Future Facilitiesmentioning

confidence: 99%

Review of the $${\Lambda }$$(1405) A curious case of a strangeness resonance

Mai

2021

Eur. Phys. J. Spec. Top.

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During its long-lasting history, the Λ(1405) has become a benchmark for our understanding of the SU(3) hadron dynamics. Starting with its theoretical prediction and later experimental verification, until the most recent debates on the existence of the second broad pole, it emerged as a fruitful research area sparking many theoretical and experimental developments. This review intends to provide the reader with the current status of research on the Λ( 1405)-resonance, reflecting on historical, experimental and theoretical developments. A common database for experimental results and a comparison of most recent theoretical approaches will be provided in the last two parts of this manuscript.

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Section: Future Facilitiesmentioning

confidence: 99%

Review of the $${\Lambda }$$(1405) A curious case of a strangeness resonance

Mai

2021

Eur. Phys. J. Spec. Top.

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“…The situation may change with appearance of new experimental data in the near future, e.g. those from measurements of kaonic deuterium data [59] or on the K 0 L reactions [60].…”

Section: Resultsmentioning

confidence: 99%

SU(3) flavor symmetry considerations for the $\bar{K}N$ coupled channels system

Bruns,

Cieplý

2021

Preprint

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We study the impact of SU(3) flavor symmetry breaking on the properties of dynamically generated Λ * states within an effective separable potential model describing the coupled channels KN system. The model is based on the chiral meson-baryon Lagrangian at next-to-leading order, and constitutes an improvement over a previous model developed by our group, with its applicability being extended to higher energies covering the Λ(1670) resonance region. It is demonstrated that the ratios of channel couplings to the resonant states can vary dramatically when the flavor breaking is gradually switched off, tracing a path to the restored SU(3) symmetry. We conclude that the couplings determined from physical observables cannot be used to reliably relate a given resonance to a specific flavor multiplet.

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“…The detected Λs can be produced (i) directly in the K − multi-nucleon absorption (ii) as secondary products of a Σ 0 decay ( g S  L 0 ) or a Σ conversion (S  L ¢ N N). Monte Carlo (MC) simulations of the K − 2NA, 3NA and 4NA were performed based on [14,26] for both at-rest and inflight K − captures in 12 C nuclei. In the case of the K − 2NA, three contributions were considered: (1) the QF production of the Λ(Σ 0 )p pairs, i.e.…”

Section: Details Of the Data Analysismentioning

confidence: 99%

“…The predicted s-wave K − p and K − n scattering amplitudes, and the positions of the corresponding poles, are strongly model dependent [9]. The K − p interaction at threshold is constrained by the measured shift and width of kaonic hydrogen [10] (see also [11] for a complete review); the corresponding information in the K − n channel will be extracted from the kaonic deuterium measurement [12,13]. Experimental information above the threshold, at low kaon momenta ( < p 120 MeV c K ), is strongly demanded.…”

Section: Introductionmentioning

confidence: 99%

“…In [19] the BRs and low-energy cross sections for the K − 2NA, 3NA and 4NA were extracted for K − capture on 12 C nuclei giving rise to Λp correlated production in the final state of the interaction. The detected Λp pairs can be produced in Quasi-Free (QF) processes, either with a direct Λ production, or as a result of the g S  L 0 decay.…”

Section: Introductionmentioning

confidence: 99%

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Total branching ratio of the K⁻ two-nucleon absorption in ¹²C

et al. 2020

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This work is a critical re-analysis of the results obtained by the AMADEUS collaboration, concerning the measurement of the K− multi-nucleon absorption reactions, on a 12C target, in the Λp final state (Del Grande et al 2019 Eur. Phys. J. C 79, 190). We show that a good estimate of the K− two-nucleon absorption total branching ratio can be extracted, given that the measured final state interactions and conversion reactions contain information on almost all the remaining hyperon-nucleon final state combinations. The main contribution to the total branching ratio of the K− two-nucleon absorption in Carbon is extracted from the measured ratios and is found to be , which is in agreement with recent theoretical predictions. The missing contribution, from those few channels for which a Λp pair could not be detected in the final state of the interaction, is also estimated combining both the measured branching ratios and the available theoretical information, and amounts to . All together the total branching ratio of the K− two-nucleon absorption in Carbon is found to be

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Kaonic Deuterium Measurement with SIDDHARTA-2 on DA$\Phi $NE

Cited by 7 publications

References 0 publications

Review of the $${\Lambda }$$(1405) A curious case of a strangeness resonance

Review of the $${\Lambda }$$(1405) A curious case of a strangeness resonance

SU(3) flavor symmetry considerations for the $\bar{K}N$ coupled channels system

Total branching ratio of the K⁻ two-nucleon absorption in ¹²C

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Kaonic Deuterium Measurement with SIDDHARTA-2 on DA$\Phi $NE

Cited by 7 publications

References 0 publications

Review of the $${\Lambda }$$(1405) A curious case of a strangeness resonance

Review of the $${\Lambda }$$(1405) A curious case of a strangeness resonance

SU(3) flavor symmetry considerations for the $\bar{K}N$ coupled channels system

Total branching ratio of the K− two-nucleon absorption in 12C

Contact Info

Product

Resources

About

Total branching ratio of the K⁻ two-nucleon absorption in ¹²C