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Direct, Resonant Production of States with Positive Charge Conjugation in Electron-Positron Annihilation.
- Source :
-
EPJ Web of Conferences . 10/18/2019, Vol. 218, p1-7. 7p. - Publication Year :
- 2019
-
Abstract
- Recent theory results on direct production of resonances with positive charge conjugationin electron-positron annihilation are reviewed. The strong modeldependence is emphasized, with predictions varying between 0.03 eV and 0.43 eV for the charmonium state with JPC = 1++ and between0.16 eV and4.25 eV for the state with JPC =2++. For the state with JPC = 0++ the cross section is of O ( m e 2 / M x 2) $ \left({\mathop m\nolimits_e^2 /\mathop M\nolimits_x^2 } \right) $ and thus negligeable for all practical purpose. The importance of the relative phase of the production amplitude is emphasized. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21016275
- Volume :
- 218
- Database :
- Academic Search Index
- Journal :
- EPJ Web of Conferences
- Publication Type :
- Conference
- Accession number :
- 139291887
- Full Text :
- https://doi.org/10.1051/epjconf/201921802010