Isospin decomposition of the photoproduced ¦²¦Ð system near the

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• 作者：R.A. Schumacher ; K. Moriya
• 关键词：Hyperon ; Photoproduction ; Line shape ; ¦«(1405)¦«(1405)
• 刊名：Nuclear Physics A
• 出版年：2013
• 出版时间：20 September, 2013
• 年：2013
• 卷：914
• 期：Complete
• 页码：51-59
• 全文大小：363 K

文摘

Recent experimental results for the reaction from CLAS at Jefferson Lab are discussed. It was found that the mass distributions or ¡°line shapes¡± of the three charge combinations , and differ significantly. Our results show that the , as the constituent of the reaction, must be accompanied by an component. We discuss phenomenological fits to the data to test the possible forms and magnitudes of these amplitudes. A two-amplitude fit of Breit-Wigner form to the channel alone works quite well. The addition of a single amplitude works fairly well to model all the line shapes simultaneously.