uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Measurement of the np -> np pi(0)pi(0) reaction in search for the recently observed d* (2380) resonance
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
Show others and affiliations
2015 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 743, 325-332 p.Article in journal (Refereed) Published
Abstract [en]

Exclusive measurements of the quasi-free np --> np pi(0)pi(0) reaction have been performed by means of dp collisions at T-d = 2.27 GeV using the WASA detector setup at COSY. Total and differential cross sections have been obtained covering the energy region root s = (2.35-2.46) GeV, which includes the region of the ABC effect and its associated d* (2380) resonance. Adding the d* resonance amplitude to that for the conventional processes leads to a reasonable description of the data. The observed resonance effect in the total cross section is in agreement with the predictions of Faldt and Wilkin as well with those of Albadajedo and Oset. The ABC effect, i.e. the low-mass enhancement in the pi(0)pi(0)-invariant mass spectrum, is found to be very modest - if present at all, which might pose a problem to some of its interpretations.

Place, publisher, year, edition, pages
2015. Vol. 743, 325-332 p.
Keyword [en]
Two-pion production, ABC effect and resonance structure, Dibaryon resonance
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-253065DOI: 10.1016/j.physletb.2015.02.067ISI: 000352147500050OAI: oai:DiVA.org:uu-253065DiVA: diva2:820145
Available from: 2015-06-11 Created: 2015-05-20 Last updated: 2015-06-11Bibliographically approved

Open Access in DiVA

fulltext(726 kB)149 downloads
File information
File name FULLTEXT01.pdfFile size 726 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Adlarsona, PatrikCalén, HansFransson, Kjell E. I.Gullström, Carl-OscarHeijkenskjöld, LenaHöistad, BoJohansson, TordKupsc, AndrzejMarciniewski, PawelPszczel, DamianPyszniak, AndrzejWolke, MagnusZlomanczuk, Jozef
By organisation
Nuclear Physics
In the same journal
Physics Letters B
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar
Total: 149 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 495 hits
ReferencesLink to record
Permanent link

Direct link