Search: onr:"swepub:oai:DiVA.org:uu-335761" >
The branching ratio...
The branching ratio omega -> pi(+) pi(-) revisited
-
- Hanhart, C. (author)
- Forschungszentrum Jülich, Institut für Kernphysik; Forschungszentrum Jülich, Institute for Advanced Simulation; Forschungszentrum Jülich, Jülich Center for Hadron Physics
-
- Holz, S. (author)
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik
-
- Kubis, B. (author)
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik; Universität Bonn, Bethe Center for Theoretical Physics
-
show more...
-
- Kupść, Andrzej (author)
- Uppsala universitet,Kärnfysik,National Centre for Nuclear Research, High Energy Physics Department, Warsaw
-
- Wirzba, A. (author)
- Forschungszentrum Jülich, Institut für Kernphysik; Forschungszentrum Jülich, Institute for Advanced Simulation; Forschungszentrum Jülich, Jülich Center for Hadron Physics; University of California, Kohn Hall, Kavli Institute for Theoretical Physics
-
- Xiao, C. W. (author)
- Forschungszentrum Jülich, Institut für Kernphysik; Forschungszentrum Jülich, Institute for Advanced Simulation; Forschungszentrum Jülich, Jülich Center for Hadron Physics
-
show less...
-
(creator_code:org_t)
- 2017-02-14
- 2017
- English.
-
In: European Physical Journal C. - : Springer Science and Business Media LLC. - 1434-6044 .- 1434-6052. ; 77:2
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://uu.diva-port... (primary) (Raw object)
-
https://uu.diva-port...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- We analyze themost recent data for the pion vector form factor in the timelike region, employing a modelindependent approach based on dispersion theory. We confirm earlier observations about the inconsistency of different modern high-precision data sets. Excluding the BaBar data, we find an updated value for the isospin-violating branching ratio B(omega -> pi(+) pi(-)) = (1.46 +/- 0.08) x 10(-2). As a side result, we also extract an improved value for the pion vector or charge radius, root < r(V)(2)> = 0.6603(5)(4) fm, where the first uncertainty is statistical as derived from the fit, while the second estimates the possible size of nonuniversal radiative corrections. In addition, we demonstrate that modern high-quality data for the decay. eta'-> pi(+) pi(-) will allow for an even improved determination of the transition strength omega -> pi(+) pi(-).
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database