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Abstract: The total cross section of the $pp\to pp\pi^0$ reaction near threshold iscalculated in pionless effective field theory with a di-baryon and externalpions. The amplitudes for a leading one-body and subleading contact neutralpion production vertex are obtained including the initial and final stateinteractions. After estimating a low-energy constant in the contact vertex, wecompare our results for the total cross section with the experimental data.



Autor: Shung-ichi Ando Sungkyunkwan U.

Fuente: https://arxiv.org/







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