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Kroll, P.

A study of the γ∗ – f0(980) transition form factors

Kroll, P. (2017) A study of the γ∗ – f0(980) transition form factors. The European Physical Journal C 77 (95), pp. 1-11.

Date of publication of this fulltext: 17 Apr 2018 11:12
Article
DOI to cite this document: 10.5283/epub.37131


Abstract

The gamma*-f(0)(980) transition form factors are calculated within the QCD factorization framework. The f(0)-meson is assumed to bemainly generated through its s (s) over bar Fock component. The corresponding spin wave function of the f(0)(980) meson is constructed and, combined with a model light-cone wave function for this Fock component, used in the calculation of the form factors. In the ...

The gamma*-f(0)(980) transition form factors are calculated within the QCD factorization framework. The f(0)-meson is assumed to bemainly generated through its s (s) over bar Fock component. The corresponding spin wave function of the f(0)(980) meson is constructed and, combined with a model light-cone wave function for this Fock component, used in the calculation of the form factors. In the real-photon limit the results for the transverse form factor are compared to the large momentum-transfer data measured by the BELLE collaboration recently. It turns out that, for the momentum-transfer range explored by BELLE, the collinear approximation does not suffice, power corrections to it, modeled as quark transverse moment effects, seem to be needed. Mixing of the f(0) with the sigma(500) is also briefly discussed.



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Details

Item typeArticle
Journal or Publication TitleThe European Physical Journal C
Publisher:Springer
Place of Publication:NEW YORK
Volume:77
Number of Issue or Book Chapter:95
Page Range:pp. 1-11
Date13 February 2017
InstitutionsPhysics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer
Identification Number
ValueType
10.1140/epjc/s10052-017-4661-8DOI
KeywordsPSEUDOSCALAR MESONS; EXCLUSIVE PROCESSES; DECAYS; F(0)(980); QCD; ANNIHILATION; QUARKONIUM; COLLISIONS; PHOTON; STATES;
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-371318
Item ID37131

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