Low energy Antikaon-nucleon/nuclei interaction studies by AMADEUS

K. Piscicchia, M. Cargnelli, C. Curceanu, R. Del Grande, L. Fabbietti, C. Guaraldo, J. Marton, P. Moskal, A. Scordo, M. Silarski, D. Sirghi, M. Skurzok, I. Tucakovic, O. Vazquez Doce, S. Wycech, E. Widmann, J. Zmeskal

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Abstract

The AMADEUS experiment at the DAΦNE collider of LNF-INFN deals with the investigation of the at-rest, or low-momentum, K- interactions in light nuclear targets, with the aim to constrain the low energy QCD models in the strangeness sector. The 0 step of the experiment consisted in the reanalysis of the 2004/2005 KLOE data, exploiting K- absorptions in H, 4He, 9Be and 12C, leading to the first invariant mass spectroscopic study with very low momentum (about 100 MeV) in-flight K- captures. With AMADEUS step 1, a dedicated pure carbon target was implemented in the central region of the KLOE detector, providing a high statistic sample of pure at-rest K- nuclear interaction. The first measurement of the nonresonant transition amplitude/AK-n→λπ-/at √s = 33 MeV below the K̄N threshold is presented, in relation with the Λ(1405) properties studies.

Original languageEnglish
Pages (from-to)609-616
Number of pages8
JournalActa Physica Polonica B, Proceedings Supplement
Volume11
Issue number3
DOIs
StatePublished - 2018

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