Partial wave analysis of the reaction p(3.5 GeV) + p → pK +Λ to search for the "ppK −2 bound state

  • Employing the Bonn–Gatchina partial wave analysis framework (PWA), we have analyzed HADES data of the reaction p(3.5 GeV) + p → pK +Λ. This reaction might contain information about the kaonic cluster “ppK −” (with quantum numbers J P = 0− and total isospin I = 1/2) via its decay into pΛ. Due to interference effects in our coherent description of the data, a hypothetical KNN (or, specifically “ppK −”) cluster signal need not necessarily show up as a pronounced feature (e.g. a peak) in an invariant mass spectrum like pΛ. Our PWA analysis includes a variety of resonant and non-resonant intermediate states and delivers a good description of our data (various angular distributions and two-hadron invariant mass spectra) without a contribution of a KNN cluster. At a confidence level of CLs = 95% such a cluster cannot contribute more than 2–12% to the total cross section with a pK +Λ final state, which translates into a production cross-section between 0.7 μb and 4.2 μb, respectively. The range of the upper limit depends on the assumed cluster mass, width and production process.

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Author:Geydar AgakishievGND, Oliver Werner Arnold, D. Belver, A. Belyaev, Jia-Chii Berger-Chen, Alberto BlancoORCiD, Michael BöhmerORCiDGND, J.L. Boyard, P. Cabanelas, S. Chernenko, A. Dybczak, Eliane EppleORCiD, Laura FabbiettiORCiDGND, Oleg Fateev, Paolo FinocchiaroORCiD, Paulo FonteORCiDGND, J. Friese, I. Fröhlich, Tetyana GalatyukORCiDGND, J.A. Garzón, Roman GernhäuserORCiDGND, Kathrin GöbelORCiDGND, Marina Golubeva, D. González-Díaz, Fedor GuberORCiD, Malgorzata Gumberidze, T. Heinz, T. Hennino, R. Holzmann, Alexander P. Ierusalimov, I. Iori, Ivashkin IvashkinORCiD, M. Jurkovic, B. Kämpfer, Tatiana L. KaravichevaORCiD, I. Koenig, W. Koenig, B.W. Kolb, G. Kornakov, R. Kotte, A. Krása, Filip KrizekORCiD, R. Krücken, H. Kuc, W. Kühn, Andrej KuglerORCiD, Tobias Kunz, Alexander KurepinORCiD, Vladimir P. Ladygin, Rafał Tomasz Lalik, Kirill LapidusORCiD, Alexei Lebedev, L. Lopes, M. Lorenz, L. Maier, Alessio MangiarottiORCiD, Jochen MarkertGND, Volker MetagORCiDGND, J. Michel, Christian Müntz, Robert Helmut MünzerORCiDGND, L. Naumann, Yvonne C. PachmayerORCiDGND, Marek PalkaORCiD, Y. Parpottas, Vladimir Pechenov, Olga Pechenova, Jerzy Pietraszko, Witold PrzygodaORCiD, Béatrice RamsteinORCiD, Andrey ReshetinORCiD, Anar RustamovORCiDGND, A. Sadovsky, Piotr SalaburaORCiD, Alexander SchmahORCiDGND, E. Schwab, Johannes Stephan SiebensonGND, Yuri G. SobolevORCiDGND, Stefano SpataroORCiD, Björn SpruckORCiDGND, Herbert Ströbele, Joachim StrothORCiD, C. Sturm, A. Tarantola, K. Teilab, Pavel Tlustý, Michael TraxlerORCiD, Haralabos TsertosORCiD, T. Vasiliev, V. Wagner, Michael WeberORCiD, Christian WendischGND, Jörn WüstenfeldGND, S. Yurevich, Y. Zanevsky, Andrei V. SarantsevGND
Parent Title (English):Physics Letters B
Place of publication:Amsterdam
Document Type:Article
Date of Publication (online):2015/01/26
Date of first Publication:2015/01/26
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Creating Corporation:HADES Collaboration
Release Date:2022/10/01
Tag:Anti-kaon–nucleon physics; Kaonic nuclei; Low energy QCD; Partial wave analysis; ppK −
Page Number:7
First Page:424
Last Page:248
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung 4.0