Role of the N ∗ ( 1440 ) resonance in the pp → pnπ + reaction
نویسندگان
چکیده
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 Corresponding author. [email protected]; Tel: +86-10-88236162; fax: +86-10-88233085 [email protected] [email protected] [email protected]
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A ug 2 00 8 Role of the N ∗ ( 1440 ) resonance in the pp → pnπ + reaction
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 foun...
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تاریخ انتشار 2009