Weak Radiative Hyperon Decays in Chiral Perturbation Theory
| dc.creator | Jenkins, Elizabeth | |
| dc.creator | Luke, Michael | |
| dc.creator | Manohar, Aneesh V. | |
| dc.creator | Savage, Martin J. | |
| dc.date | 1992-10-27 | |
| dc.date.accessioned | 2026-07-07T10:34:55Z | |
| dc.date.available | 2026-07-07T10:34:55Z | |
| dc.description | The parity-conserving $a$ and parity-violating $b$ amplitudes for weak radiative hyperon decay are studied using chiral perturbation theory. The imaginary parts of $a$ and $b$ are computed using unitarity. The real part of $b$ is dominated by a one-loop infrared divergent graph which is computed. The real part of $a$ has a large theoretical uncertainty and cannot be calculated reliably. Counterterms for the $a$ and $b$ amplitudes are classified using $CPS$ symmetry. The experimental values for decay widths and asymmetries are consistent with theory, with the exception of the asymmetry parameter for the $Σ^+ \rightarrow p γ$ decay. | |
| dc.description | 24 Pages, 7 Figures, uses harvmac | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9210265 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9210265 | |
| dc.identifier | Nucl.Phys.B397:84-104,1993 | |
| dc.identifier | doi:10.1016/0550-3213(93)90336-N | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179600 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Weak Radiative Hyperon Decays in Chiral Perturbation Theory | |
| dc.type | text |