Hadronic interaction of η and η ′ mesons with protons Pawe

Hadronic interaction of η and η ′ mesons with protons Acknowledgement Accomplishment of the experiments presented in this treatise was possible only thanks to the joined effort of friends from the COSY-11 group with whom I had the luck to work during many years of my involvement at the Jagellonian University in Poland and the Research Centre Jülich in Germany. I am greatly indebted to all of them for their help. A person whom I own most and whom I revere and admire is Professor Walter Oelert, inventor of the COSY-11 facility and founder of the COSY-11 collaboration. It is only due to his great open mindedness and understanding that I could devote a lot of my time to study physics while working as a physicist. I thank you from the bottom of my heart for the time devoted, support and patience, the latter so often tried to the utmost. I am profoundly grateful to Professor Lucjan Jarczyk and Professor Walter Oelert for being my promotors in the truest sense of this word. Wise and friendly advise, encouragement and direct reprimands of Professor Lucjan Jarczyk I value more highly than I can express in words. At the last stage of completing this dissertation I was pleased to work together with talented and zealous students: Master of Science Rafa l Czy˙ zykiewicz, Master of Science Micha l Janusz, Master of Science Pawe l Klaja, Master of Science Cezary Piskor-Ignatowicz, and Master of Science Joanna Przerwa. When introducing you to the experimental technique I certainly gained more than yourselves and for an instant I will not regret the time spent together. I am especially thankful to Joanna who kindly agreed to defend our recent experimental proposal and who with her unbelievable charm and serenity made our daily work pleasurable. One of the many factors which motivated me to conduct this work was the written wish of Master of Science Peter Winter who had wanted to adress me in the acknowledgements of his PhD thesis without a negation in front of the title he had granted me in advance. Although it is probably too late, I did do my best.