Measurement of antiproton annihilation on Cu, Ag and Au with emulsion films
S. Aghion, C. Amsler, A. Ariga, T. Ariga, G. Bonomi, P. Braunig, R. S. Brusa, L. Cabaret, M. Caccia, R. Caravita, F. Castelli, G. Cerchiari, D. Comparat, G. Con… 展开作者
S. Aghion, C. Amsler, A. Ariga, T. Ariga, G. Bonomi, P. Braunig, R. S. Brusa, L. Cabaret, M. Caccia, R. Caravita, F. Castelli, G. Cerchiari, D. Comparat, G. Consolati, A. Demetrio, L. Di Noto, M. Doser, A. Ereditato, C. Evans, R. Ferragut, J. Fesel, A. Fontana, S. Gerber, M. Giammarchi, A. Gligorova, F. Guatieri, S. Haider, A. Hinterberger, H. Holmestad, T. Huse, J. Kawada, A. Kellerbauer, M. Kimura, D. Krasnicky, V. Lagomarsino, P. Lansonneur, P. Lebrun, C. Malbrunot, S. Mariazzi, V. Matveev, Z. Mazzotta, S. R. Muller, G. Nebbia, P. Nedelec, M. Oberthaler, N. Pacifico, D. Pagano, L. Penasa, V. Petracek, C. Pistillo, F. Prelz, M. Prevedelli, L. Ravelli, B. Rienaecker, O. M. Rohne, A. Rotondi, M. Sacerdoti, H. Sandaker, R. Santoro, P. Scampoli, M. Simon, L. Smestad, F. Sorrentino, G. Testera, I. C. Tietje, S. Vamosi, M. Vladymyrov, E. Widmann, P. Yzombard, C. Zimmer, J. Zmeskal, N. Zurlo
The characteristics of low energy antiproton annihilations on nuclei (e.g. hadronization and product multiplicities) are not well known, and Monte Carlo simulation packages that use different models provide different descriptions of the annihilation events. In this study, we measured the particle multiplicities resulting from antiproton annihilations on nuclei. The results were compared with predictions obtained using different models in the simulation tools GEANT4 and FLUKA. For this study, we exposed thin targets (Cu, Ag and Au) to a very low energy antiproton beam from CERN's Antiproton Decelerator, exploiting the secondary beamline available in the AEgIS experimental zone. The antiproton annihilation products were detected using emulsion films developed at the Laboratory of High Energy Physics in Bern, where they were analysed at the automatic microscope facility. The fragment multiplicity measured in this study is in good agreement with results obtained with FLUKA simulations for both minimally and heavily ionizing particles.
Monitoring antiproton numbers with a CMOS detector in a dense-track environment
ETH Zurich（苏黎世联邦理工学院）；National Centre for Nuclear Research (NCBJ)（国家核研究中心）；The Pohang University of Science and Technology (POSTECH)（浦项科技大学）；Sorbonne Université（索邦大学）；Université Paris-Saclay（巴黎萨克雷大学）；Université de Strasbourg（斯特拉斯堡大学）；Stockholm University（斯德哥尔摩大学）；Institute for Basic Science（基础科学研究院）；Seoul National University（首尔大学）；Korea University Sejong Campus（高丽大学世宗校区）；University of Tokyo（东京大学）；CERN（欧洲核子研究组织）；Swansea University（斯旺西大学）
Precision measurements of the total and partial widths of the psi(2S) charmonium meson with a new complementary-scan technique in antiproton-proton annihilations
