质心能量为1.4 GeV的质子-质子碰撞中的π⁰π⁰产生
高能物理 - 实验
2015-05-28 v3
摘要
利用WASA-at-COSY装置，在1.4 GeV束流能量下研究了反应pp→ppπ⁰π⁰。总截面测得为(324 ± 21_系统 ± 58_归一化) μb。为了研究产生机制，评估了微分运动学分布。微分分布表明，两个初始态质子都被激发到中间Δ(1232)共振态，每个共振态衰变成一个质子和一个单π介子，从而在末态产生π介子对。未发现Roper共振N*(1440)通过其衰变成一个质子和两个π介子的显著贡献。
引用
@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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