Title of article
Role of the image resonance in the image reaction Original Research Article
Author/Authors
Zhen Ouyang، نويسنده , , Ju-Jun Xie، نويسنده , , Bing-Song Zou ، نويسنده , , Hu-Shan Xu، نويسنده ,
Issue Information
هفته نامه با شماره پیاپی سال 2009
Pages
15
From page
220
To page
234
Abstract
New measurement by CELSIUS-WASA Collaboration on the pp→pnπ+ reaction reveals clear evidence for the presence of the Roper resonance N∗(1440) which has been ignored in previous theoretical calculations. In this article, based on an effective Lagrangian approach and available knowledge on the Roper resonance, we investigate the role of the Roper resonance for the pp→pnπ+ reaction. It is found that the contribution from the Roper resonance N∗(1440) becomes significant for kinetic energy above 1.1 GeV, consistent with the new experimental observation. The t-channel σ-meson exchange is dominant for the production of the Roper resonance.
Keywords
N?(1440) resonance , Effective Lagrangian approach , pp collision , Pion production
Journal title
Nuclear physics A
Serial Year
2009
Journal title
Nuclear physics A
Record number
1205793
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