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K∗(892)+ production in proton-proton collisions at Ebeam=3.5 GeV

  • G. Agakishiev
  • , O. Arnold
  • , D. Belver
  • , A. Belyaev
  • , J. C. Berger-Chen
  • , A. Blanco
  • , M. Böhmer
  • , J. L. Boyard
  • , P. Cabanelas
  • , S. Chernenko
  • , A. Dybczak
  • , E. Epple
  • , L. Fabbietti
  • , O. Fateev
  • , P. Finocchiaro
  • , P. Fonte
  • , J. Friese
  • , I. Fröhlich
  • , T. Galatyuk
  • , J. A. Garzón
  • R. Gernhäuser, K. Göbel, M. Golubeva, D. González-Díaz, F. Guber, M. Gumberidze, T. Heinz, T. Hennino, R. Holzmann, A. Ierusalimov, I. Iori, A. Ivashkin, M. Jurkovic, B. Kämpfer, T. Karavicheva, I. Koenig, W. Koenig, B. W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, A. Krása, F. Krizek, R. Krücken, H. Kuc, W. Kühn, A. Kugler, T. Kunz, A. Kurepin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, L. Maier, A. Mangiarotti, J. Markert, V. Metag, J. Michel, D. Mihaylov, C. Müntz, R. Münzer, L. Naumann, Y. C. Pachmayer, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, J. Pietraszko, W. Przygoda, B. Ramstein, A. Reshetin, A. Rustamov, A. Sadovsky, P. Salabura, A. Schmah, E. Schwab, J. Siebenson, Yu G. Sobolev, S. Spataro, B. Spruck, H. Ströbele, J. Stroth, C. Sturm, O. Svoboda, A. Tarantola, K. Teilab, P. Tlusty, M. Traxler, H. Tsertos, T. Vasiliev, V. Wagner, M. Weber, C. Wendisch, J. Wüstenfeld, S. Yurevich, Y. Zanevsky
  • Joint Inst. for Nuclear Research
  • Cluster of Excellence E-conversion
  • Technical University of Munich
  • Universidad de Santiago de Compostela
  • LIP-Laboratorio de Instrumentacao e Fisica Experimental de Particulas
  • CNRS/IN2P3 and Université Paris 11
  • Jagiellonian University
  • Laboratori Nazionali Del Sud
  • Coimbra Polytechnic - ISEC
  • Johann Wolfgang Goethe University
  • Technische Universität Darmstadt
  • GSI Helmholtz Center
  • Institute for Nuclear Research of the Russian Academy of Sciences
  • INFN Sezione di Milano
  • University of Milan
  • HelmholtzZentrum Dresden-Rossendorf
  • Technische Universität Dresden
  • Nuclear Physics Institute of the Cas
  • Justus-Liebig-Universität Gießen
  • ITEP
  • the University of Utrecht
  • University of Cyprus
  • Frederick University
  • Lawrence Berkeley National Laboratory
  • University of Torino

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We present results on the K∗(892)+ production in proton-proton collisions at a beam energy of E=3.5 GeV, which is hitherto the lowest energy at which this mesonic resonance has been observed in nucleon-nucleon reactions. The data are interpreted within a two-channel model that includes the three-body production of K∗(892)+ associated with the Λ or Σ hyperon. The relative contributions of both channels are estimated. Besides the total cross section σ(p+p→K∗(892)++X)=9.5±0.9-0.9+1.1±0.7μb, which adds a new data point to the excitation function of the K∗(892)+ production in the region of low excess energy, transverse momenta and angular spectra are extracted and compared with the predictions of the two-channel model. The spin characteristics of K∗(892)+ are discussed as well in terms of the spin-alignment.

Original languageEnglish
Article number024903
JournalPhysical Review C - Nuclear Physics
Volume92
Issue number2
DOIs
StatePublished - 6 Aug 2015

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