π^0 π^0 Production in Proton-Proton Collisions at Tp=1.4 GeV
P. Adlarson, C. Adolph, W. Augustyniak, M. Bashkanov, T. Bednarski, F. S. Bergmann, M. Berłowski, H. Bhatt, K. --T. Brinkmann, M. Büscher, H. Calén, H. Clement,… 展开作者
P. Adlarson, C. Adolph, W. Augustyniak, M. Bashkanov, T. Bednarski, F. S. Bergmann, M. Berłowski, H. Bhatt, K. --T. Brinkmann, M. Büscher, H. Calén, H. Clement, D. Coderre, E. Czerwiński, E. Doroshkevich, R. Engels, W. Erven, W. Eyrich, P. Fedorets, K. Föhl, K. Fransson, F. Goldenbaum, P. Goslawski, K. Grigoryevj, C. --O. Gullström, L. Heijkenskjöld, J. Heimlich, V. Hejny, F. Hinterberger, M. Hodana, B. Höistad, M. Jacewicz, M. Janusz, A. Jany, B. R. Jany, L. Jarczyk, T. Johansson, B. Kamys, G. Kemmerling, O. Khakimova, A. Khoukaz, S. Kistryn, J. Klaja, H. Kleines, B. Kłos, F. Kren, W. Krzemień, P. Kulessa, A. Kupść, K. Lalwani, B. Lorentz, H. Machner, A. Magiera, R. Maier, B. Mariański, P. Marciniewski, M. Mikirtychiants, H. --P. Morsch, P. Moskal, B. K. Nandi, S. Niedźwiecki, H. Ohm, A. Passfeld, C. Pauly, E. Perez del Rio, Y. Petukhov, N. Piskunov, P. Pluciński, P. Podkopał, A. Povtoreyko, D. Prasuhn, A. Pricking, K. Pysz, T. Rausmann, C. F. Redmer, J. Ritman, Z. Rudy, S. Sawant, S. Schadmand, A. Schmidt, T. Sefzick, V. Serdyuk, N. Shah, M. Siemaszko, T. Skorodko, M. Skurzok, J. Smyrski, V. Sopov, R. Stassen, J. Stepaniak, G. Sterzenbach, H. Stockhorst, A. Szczurek, A. Täschner, T. Tolba, A. Trzciński, R. Varma, P. Vlasov, G. J. Wagner, W. Weglorz, U. Wiedner, A. Winnemöller, M. Wolke, A. Wrońska, P. Wüstner, P. Wurm, X. Yuan, L. Yurev, J. Zabierowski, C. Zheng, M. J. Zieliński, W. Zipper, J. Złomańczuk, P. Zuprański
利用WASA-at-COSY装置在1.4GeV束流能量下研究了pp-> pppi 0 pi 0反应。总截面为（324 ± 21_系统± 58_归一化）μ b。为了研究生产机理，对微分运动学分布进行了评价。差分分布表明，两个初始状态的质子被激发到中间德尔塔（1232）共振，每个衰变成一个质子和一个单一的π介子，从而产生π介子对在最终状态。没有发现Roper共振N*（1440）通过衰变为一个质子和两个π子的显著贡献
英文摘要：
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
The LUCIAE model predictions on the light vector meson production in proton-proton, proton-nucleus and nucleus-nucleus collisions at 158 A GeV
用LUCIAE模型对158 A GeV pp、p+Pb和Pb+Pb碰撞中产生的光矢量介子（$ρ,ω,ϕ$）进行了预测，并与实验结果进行了比较.该模型再现了数据的一般趋势，但未能描述中心Pb+Pb碰撞中高$p_T$矢量介子的产额。对158 AGeV的In+In和p+A（A从Be到U变化）碰撞也作了预测。
Cross-sections of large-angle hadron production in proton- and pion-nucleus interactions II: beryllium nuclei and beam momenta from +/- 3 GeV/c to +/-15 GeV/c
Cross-sections of large-angle hadron production in proton- and pion-nucleus interactions IV: Copper nuclei and beam momenta from +/-3 GeV/c to +/-15 GeV/c
Cross-Sections of Large-Angle Hadron Production in Proton- and Pion-Nucleus Interactions V: Lead Nuclei and Beam Momenta from +/-3 Gev/c to +/-15 Gev/c
Cross-Sections of Large-Angle Hadron Production in Proton- and Pion-Nucleus Interactions III: Tantalum Nuclei and Beam Momenta from +/-3 Gev/c to +/-15 Gev/c
Cross-Sections of Large-Angle Hadron Production in Proton- and Pion-Nucleus Interactions I: Beryllium Nuclei and Beam Momenta of +8.9 Gev/c and -8.0 Gev/c
Cross-sections of large-angle hadron production in proton- and pion-nucleus interactions VII: tin nuclei and beam momenta from \pm3 GeV/c to \pm15 GeV/c
Cross-sections of large-angle hadron production in proton-- and pion--nucleus interactions VIII: aluminium nuclei and beam momenta from {\pm}3 GeV/c to {\pm}15 GeV/c
Cross-sections of large-angle hadron production in proton- and pion-nucleus interactions VI: carbon nuclei and beam momenta from \pm 3 GeV/c to \pm 15 GeV/c
Comments on "Observation of Long-Range, Near-Side Angular Correlations in proton-proton Collisions at the LHC" by CMS Collaboration. arXiv:1009.4122[hep-ex]
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