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

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, I; Dzelalija, M.; Eyrich, W.; Fodor, Z.; Gasik, P.; Gasparic, I; Gillitzer, A.; Grishkin, Y.; Hartmann, O. N.; Hildenbrand, K. D.; Hong, B.; Kang, T., I; Kecskemeti, J.; Kim, Y. J.; Kirejczyk, M.; Kis, M.; Koczon, P.; Kotte, R.; Lebedev, A.; Le Fevre, A.; Liu, J. L.; Manko, V; Marton, 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, V; Suzuki, K.; Tyminski, Z.; Wagner, R.; Weber, I; Widmann, E.; Wisniewski, K.; Xiao, Z. G.; Yamasaki, T.; Yushmanov, I; Wintz, R.; Zhang, Y.; Zhilin, A.; Zinyuk, V; Zmeskal, J.

doi:10.1016/j.physletb.2018.08.068

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

Muenzer, R.;
Fabbietti, L.;
Epple, E.;
Lu, S.;
Klose, P.;
... Hong, B.;
외 64명

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초록

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.

키워드

Partial wave analysis; Resonance; Hadrons; Strangeness; Scattering length; Hyperon-nucleon interaction; K+ LAMBDA-P; HYPERON PRODUCTION; BARYON-BARYON; BEAM; CHANNEL; DISTO

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

저자: 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, I; Dzelalija, M.; Eyrich, W.; Fodor, Z.; Gasik, P.; Gasparic, I; Gillitzer, A.; Grishkin, Y.; Hartmann, O. N.; Hildenbrand, K. D.; Hong, B.; Kang, T., I; Kecskemeti, J.; Kim, Y. J.; Kirejczyk, M.; Kis, M.; Koczon, P.; Kotte, R.; Lebedev, A.; Le Fevre, A.; Liu, J. L.; Manko, V; Marton, 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, V; Suzuki, K.; Tyminski, Z.; Wagner, R.; Weber, I; Widmann, E.; Wisniewski, K.; Xiao, Z. G.; Yamasaki, T.; Yushmanov, I; Wintz, R.; Zhang, Y.; Zhilin, A.; Zinyuk, V; Zmeskal, J.

DOI: 10.1016/j.physletb.2018.08.068

발행일: 2018-10-10

유형: Article

저널명: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

권: 785

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