A data-driven approach to {{\rm{\pi }}}^{0},{\rm{\eta }} and {{\rm{\eta }}}^{\prime} single and double Dalitz decays
Abstract
The dilepton invariant mass spectra and integrated branching ratios of the single and double Dalitz decays {\mathscr{P}}\to {{{l}}}+{{{l}}}-{{γ }} and {\mathscr{P}}\to {{{l}}}+{{{l}}}-{{{l}}}+{{{l}}}- ({\mathscr{P}}={{{π }}}0,{{η }},{{{η }}}\prime; {{l}}={{e}} or {{μ }}) are predicted by means of a data-driven approach based on the use of rational approximants applied to {{{π }}}0,{{η }} and {{{η }}}\prime transition form factor experimental data in the space-like region.
Supported by the FPI scholarship BES-2012-055371 (S.G-S), the Secretaria d’Universitats i Recerca del Departament d’Economia i Coneixement de la Generalitat de Catalunya under grant 2014 SGR 1450, the Ministerio de Ciencia e Innovación under grant FPA2011-25948, the Ministerio de Economía y Competitividad under grants CICYT-FEDER-FPA 2014-55613-P and SEV-2012-0234, the Spanish Consolider-Ingenio 2010 Program CPAN (CSD2007-00042), and the European Commission under program FP7-INFRASTRUCTURES-2011-1 (283286) S.G-S also Received Support from the CAS President’s International Fellowship Initiative for Young International Scientist (2017PM0031)- Publication:
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Chinese Physics C
- Pub Date:
- January 2018
- DOI:
- 10.1088/1674-1137/42/2/023109
- arXiv:
- arXiv:1511.04916
- Bibcode:
- 2018ChPhC..42b3109E
- Keywords:
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- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- 18 pages, 11 figures. This version matches the published version