English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/33217
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


Electromagnetic decays of heavy baryons

AuthorsBañuls Polo, M. Carmen; Pich, Antonio ; Scimemi, Ignazio
Issue Date2000
PublisherAmerican Physical Society
CitationPhysical review D 61(9): 094009 (2000)
AbstractThe electromagnetic decays of the ground state baryon multiplets with one heavy quark are calculated using heavy hadron chiral perturbation theory. The M1 and E2 amplitudes for S*→Sγ, S*→Tγ and S⃗Tγ are separately computed. All M1 transitions are calculated up to O(1/Λχ2). The E2 amplitudes contribute at the same order for S*→Sγ, while for S*→Tγ they first appear at O(1/(mQΛχ2)) and for S⃗Tγ are completely negligible. The renormalization of the chiral loops is discussed and relations among different decay amplitudes are derived. We find that chiral loops involving electromagnetic interactions of the light pseudoscalar mesons provide a sizable enhancement of these decay widths. Furthermore, we obtain an absolute prediction for Γ(Ξc0′(*)→Ξc0γ) and Γ(Ξb-′(*)→Ξb-γ). Our results are compared to other estimates existing in the literature.
Description9 páginas, 3 figuras, 7 tablas.-- PACS number(s): 12.39.Fe, 12.39.Hg, 13.40.Hq, 14.20.Lq
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevD.61.094009
Appears in Collections:(IFIC) Artículos
Files in This Item:
File Description SizeFormat 
e094009.pdf125 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.