Proton-proton fusion in pionless effective theory

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dc.creatorAndo, S.
dc.creatorShin, J. W.
dc.creatorHyun, C. H.
dc.creatorHong, S. W.
dc.creatorKubodera, K.
dc.date2008-01-28
dc.date.accessioned2026-07-07T11:55:37Z
dc.date.available2026-07-07T11:55:37Z
dc.descriptionThe proton-proton fusion reaction, $pp\to de^+ν$, is studied in pionless effective field theory (EFT) with di-baryon fields up to next-to leading order. With the aid of the di-baryon fields, the effective range corrections are naturally resummed up to the infinite order and thus the calculation is greatly simplified. Furthermore, the low-energy constant which appears in the axial-current-di-baryon-di-baryon contact vertex is fixed through the ratio of two- and one-body matrix elements which reproduces the tritium lifetime very precisely. As a result we can perform a parameter free calculation for the process. We compare our numerical result with those from the accurate potential model and previous pionless EFT calculations, and find a good agreement within the accuracy better than 1%.
dc.description14 pages, 5 eps figures
dc.identifierhttps://arxiv.org/abs/0801.4330
dc.identifierhttp://arxiv.org/abs/0801.4330
dc.identifierPhys.Lett.B668:187-192,2008
dc.identifierdoi:10.1016/j.physletb.2008.08.040
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205301
dc.subjectNuclear Theory
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleProton-proton fusion in pionless effective theory
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