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Determination of N* amplitudes from associated strangeness production in p plus p collisions

Authors
Muenzer, R.Fabbietti, L.Epple, E.Lu, S.Klose, P.Hauenstein, F.Herrmann, N.Grzonka, D.Leifels, Y.Maggiora, M.Pleiner, D.Ramstein, B.Ritman, J.Roderburg, E.Salabura, P.Sarantsev, A.Basrak, Z.Buehler, P.Cargnelli, M.Caplar, R.Clement, H.Czerwiakowa, O.Deppner, IDzelalija, M.Eyrich, W.Fodor, Z.Gasik, P.Gasparic, IGillitzer, A.Grishkin, Y.Hartmann, O. N.Hildenbrand, K. D.Hong, B.Kang, T., IKecskemeti, J.Kim, Y. J.Kirejczyk, M.Kis, M.Koczon, P.Kotte, R.Lebedev, A.Le Fevre, A.Liu, J. L.Manko, VMarton, J.Matulewicz, T.Piasecki, K.Rami, F.Reischl, A.Ryu, M. S.Schmidt, P.Seres, Z.Sikora, B.Sim, K. S.Siwek-Wilczynska, K.Smolyankin, VSuzuki, K.Tyminski, Z.Wagner, R.Weber, IWidmann, E.Wisniewski, K.Xiao, Z. G.Yamasaki, T.Yushmanov, IWintz, R.Zhang, Y.Zhilin, A.Zinyuk, VZmeskal, J.
Issue Date
10-10월-2018
Publisher
ELSEVIER SCIENCE BV
Keywords
Partial wave analysis; Resonance; Hadrons; Strangeness; Scattering length; Hyperon-nucleon interaction
Citation
PHYSICS LETTERS B, v.785, pp.574 - 580
Indexed
SCIE
SCOPUS
Journal Title
PHYSICS LETTERS B
Volume
785
Start Page
574
End Page
580
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/72498
DOI
10.1016/j.physletb.2018.08.068
ISSN
0370-2693
Abstract
We present the first determination of the energy-dependent amplitudes of N* resonances extracted from their decay in K Lambda pairs in p+p -> pK(+)Lambda reactions. A combined Partial Wave Analysis of seven data samples with exclusively reconstructed p+p -> pK(+)Lambda events measured by the COSY-TOF, DISTO, FOPI and HADES Collaborations in fixed target experiments at kinetic energies between 2.14 to 3.5 GeV is used to determine the amplitude of the resonant and non-resonant contributions into the associated strangeness final state. The contribution of seven N* resonances with masses between 1650 MeV/c(2) and 1900 MeV/c(2)for an excess energy between 0 and 600 MeV has been considered. The Sigma-p cusp and final state interactions for the p-Lambda channel are also included as coherent contributions in the PWA. The N* contribution is found to be dominant with respect to the phase space emission of the pK(+)Lambda final state at all energies demonstrating the important role played by both N* and interference effects in hadronhadron collisions. (C) 2018 The Author(s). Published by Elsevier B.V.
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