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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 |
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| 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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