A note on the determination of light quark masses
| dc.creator | Deandrea, A. | |
| dc.creator | Nehme, A. | |
| dc.creator | Talavera, P. | |
| dc.date | 2008-03-20 | |
| dc.date | 2008-07-24 | |
| dc.date.accessioned | 2026-07-07T11:49:14Z | |
| dc.date.available | 2026-07-07T11:49:14Z | |
| dc.description | We provide a model-independent determination of the quantity B_0(m_d-m_u). Our approach rests only on chiral symmetry and data from the decay of the eta into three neutral pions. Since the low-energy prediction at next-to-leading order fails to reproduce the experimental results, we keep the strong interaction correction as an unknown parameter. As a first step, we relate this parameter to the quark mass difference using data from the Dalitz plot. A similar relation is obtained using data from the decay width. Combining both relations we obtain B_0(m_d-m_u)=(4495+/-440) MeV^2. The preceding value, combined with lattice determinations, leads to the values m_u(2 GeV)=(2.9+/-0.8) MeV and m_d(2 GeV)=(4.7+/-0.8) MeV. | |
| dc.description | 8 pages, 1 figure, updated version with all detailed formulas, title slighly changed | |
| dc.identifier | https://arxiv.org/abs/0803.2956 | |
| dc.identifier | http://arxiv.org/abs/0803.2956 | |
| dc.identifier | Phys.Rev.D78:034032,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.034032 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/203165 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | A note on the determination of light quark masses | |
| dc.type | text |