alpha-alpha Scattering in Halo Effective Field Theory
| dc.creator | Higa, R. | |
| dc.creator | Hammer, H. -W. | |
| dc.creator | van Kolck, U. | |
| dc.date | 2008-02-25 | |
| dc.date | 2008-09-30 | |
| dc.date.accessioned | 2026-07-07T11:48:42Z | |
| dc.date.available | 2026-07-07T11:48:42Z | |
| dc.description | We study the two-alpha-particle (alpha-alpha) system in an Effective Field Theory (EFT) for halo-like systems. We propose a power counting that incorporates the subtle interplay of strong and electromagnetic forces leading to a narrow resonance at an energy of about 0.1 MeV. We investigate the EFT expansion in detail, and compare its results with existing low-energy alpha-alpha phase shifts and previously determined effective-range parameters. Good description of the data is obtained with a surprising amount of fine-tuning. This scenario can be viewed as an expansion around the limit where, when electromagnetic interactions are turned off, the Be-8 ground state is at threshold and exhibits conformal invariance. We also discuss possible extensions to systems with more than two alpha particles. | |
| dc.description | 19 pages, 2 figures, published version | |
| dc.identifier | https://arxiv.org/abs/0802.3426 | |
| dc.identifier | http://arxiv.org/abs/0802.3426 | |
| dc.identifier | Nucl.Phys.A809:171-188,2008 | |
| dc.identifier | doi:10.1016/j.nuclphysa.2008.06.003 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/202970 | |
| dc.subject | Nuclear Theory | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | alpha-alpha Scattering in Halo Effective Field Theory | |
| dc.type | text |