Role of a triangle singularity in the πN(1535) contribution to γp→pπ0η

Role of a triangle singularity in the πN(1535) contribution to γp→pπ0η We have studied the γp→pπ0η reaction paying attention to the two main mechanisms at low energies, the γp→Δ(1700)→ηΔ(1232) and the γp→Δ(1700)→πN(1535). Both are driven by the photoexcitation of the Δ(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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review C American Physical Society (APS)

Role of a triangle singularity in the πN(1535) contribution to γp→pπ0η

Preview Only

Role of a triangle singularity in the πN(1535) contribution to γp→pπ0η

Abstract

We have studied the γp→pπ0η reaction paying attention to the two main mechanisms at low energies, the γp→Δ(1700)→ηΔ(1232) and the γp→Δ(1700)→πN(1535). Both are driven by the photoexcitation of the Δ(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.
Loading next page...
1
 
/lp/aps_physical/role-of-a-triangle-singularity-in-the-n-1535-contribution-to-p-p-0-eUqIa9j1RJ
Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
0556-2813
eISSN
1089-490X
D.O.I.
10.1103/PhysRevC.96.025201
Publisher site
See Article on Publisher Site

Abstract

We have studied the γp→pπ0η reaction paying attention to the two main mechanisms at low energies, the γp→Δ(1700)→ηΔ(1232) and the γp→Δ(1700)→πN(1535). Both are driven by the photoexcitation of the Δ(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.

Journal

Physical Review CAmerican Physical Society (APS)

Published: Aug 2, 2017

There are no references for this article.

Sorry, we don’t have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now:

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off