\pi^0 \pi^0 Production in Proton-Proton Collisions at Tp=1.4 GeV
High Energy Physics - Experiment
2015-05-28 v3
Abstract
The reaction pp->pppi0pi0 has been investigated at a beam energy of 1.4 GeV using the WASA-at-COSY facility. The total cross section is found to be (324 +- 21_systematic +- 58_normalization) mub. In order to to study the production mechanism, differential kinematical distributions have been evaluated. The differential distributions indicate that both initial state protons are excited into intermediate Delta(1232) resonances, each decaying into a proton and a single pion, thereby producing the pion pair in the final state. No significant contribution of the Roper resonance N*(1440) via its decay into a proton and two pions is found
Keywords
Cite
@article{arxiv.1107.0879,
title = {\pi^0 \pi^0 Production in Proton-Proton Collisions at Tp=1.4 GeV},
author = {P. Adlarson and C. Adolph and W. Augustyniak and M. Bashkanov and T. Bednarski and F. S. Bergmann and M. Berłowski and H. Bhatt and K. --T. Brinkmann and M. Büscher and H. Calén and H. Clement and D. Coderre and E. Czerwiński and E. Doroshkevich and R. Engels and W. Erven and W. Eyrich and P. Fedorets and K. Föhl and K. Fransson and F. Goldenbaum and P. Goslawski and K. Grigoryevj and C. --O. Gullström and L. Heijkenskjöld and J. Heimlich and V. Hejny and F. Hinterberger and M. Hodana and B. Höistad and M. Jacewicz and M. Janusz and A. Jany and B. R. Jany and L. Jarczyk and T. Johansson and B. Kamys and G. Kemmerling and O. Khakimova and A. Khoukaz and S. Kistryn and J. Klaja and H. Kleines and B. Kłos and F. Kren and W. Krzemień and P. Kulessa and A. Kupść and K. Lalwani and B. Lorentz and H. Machner and A. Magiera and R. Maier and B. Mariański and P. Marciniewski and M. Mikirtychiants and H. --P. Morsch and P. Moskal and B. K. Nandi and S. Niedźwiecki and H. Ohm and A. Passfeld and C. Pauly and E. Perez del Rio and Y. Petukhov and N. Piskunov and P. Pluciński and P. Podkopał and A. Povtoreyko and D. Prasuhn and A. Pricking and K. Pysz and T. Rausmann and C. F. Redmer and J. Ritman and Z. Rudy and S. Sawant and S. Schadmand and A. Schmidt and T. Sefzick and V. Serdyuk and N. Shah and M. Siemaszko and T. Skorodko and M. Skurzok and J. Smyrski and V. Sopov and R. Stassen and J. Stepaniak and G. Sterzenbach and H. Stockhorst and A. Szczurek and A. Täschner and T. Tolba and A. Trzciński and R. Varma and P. Vlasov and G. J. Wagner and W. Weglorz and U. Wiedner and A. Winnemöller and M. Wolke and A. Wrońska and P. Wüstner and P. Wurm and X. Yuan and L. Yurev and J. Zabierowski and C. Zheng and M. J. Zieliński and W. Zipper and J. Złomańczuk and P. Zuprański},
journal= {arXiv preprint arXiv:1107.0879},
year = {2015}
}
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