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	Author	Debastiani, V.R.; Sakai, S.; Oset, E.
	Title	Role of a triangle singularity in the pi N(1535) contribution to gamma p -> p pi(0) eta			Type	Journal Article
	Year	2017	Publication	Physical Review C	Abbreviated Journal	Phys. Rev. C
	Volume	96	Issue	2	Pages	025201 - 7pp
	Keywords
	Abstract	We have studied the gamma p -> p pi(0) eta reaction paying attention to the two main mechanisms at low energies, the gamma p ->Delta(1700) -> eta Delta(1232) and the gamma p -> Delta(1700) -> pi N(1535). Both are driven by the photoexcitation of the Delta (1700) and the second one involves a mechanism that leads to a triangle singularity. We are able to evaluate quantitatively the cross section for this process and show that it agrees with the experimental determination. Yet there are some differences with the standard partial wave analysis which does not include explicitly the triangle singularity. The exercise also shows the convenience of exploring possible triangle singularities in other reactions and how a standard partial wave analysis can be extended to accommodate them.
	Address	[Debastiani, V. R.] Univ Valencia, Ctr Mixto, CSIC, Inst Invest Paterna,Dept Fis Teor, Apartado 22085, Valencia 46071, Spain, Email: vinicius.rodrigues@ific.uv.es;
	Corporate Author				Thesis
	Publisher	Amer Physical Soc	Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	2469-9985	ISBN		Medium
	Area		Expedition		Conference
	Notes	WOS:000406755100005			Approved	no
	Is ISI	yes	International Collaboration	yes
	Call Number	IFIC @ pastor @			Serial	3227
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