Rohrwild, Juergen (2007) Determination of the magnetic susceptibility of the quark condensate using radiative heavy meson decays. JOURNAL OF HIGH ENERGY PHYSICS (9): 073. ISSN 1029-8479,
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We use a light-cone sum rule (LCSR) analysis of the branching ratios of radiative meson decays to constrain the value of the magnetic susceptibility of the quark condensate chi(mu). For the first time, we use a complete set of three-particle distribution amplitudes that enables us to give a consistent prediction for the branching ratios. Further m ore we will make use of a very recent update of several non-perturbative parameters. Our final result for chi(mu = 1GeV)=2.85 +/- 0.5 GeV-2 (assuming asymptotic wave functions) agrees with the currently used value of 3.15 +/- 0.3 GeV-2.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QCD SUM-RULES; ASTERISK-B-PI; QUANTUM CHROMODYNAMICS; VACUUM; COUPLINGS; MOMENTS; PHYSICS; QCD; sum rules; phenomenological model |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 01 Dec 2020 12:38 |
| Last Modified: | 01 Dec 2020 12:38 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32297 |
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