U-boson and the HyperCP exotic events
| dc.creator | Chen, Chuan-Hung | |
| dc.creator | Geng, Chao-Qiang | |
| dc.creator | Kao, Chung-Wen | |
| dc.date | 2007-08-07 | |
| dc.date | 2008-04-22 | |
| dc.date.accessioned | 2026-07-07T11:41:44Z | |
| dc.date.available | 2026-07-07T11:41:44Z | |
| dc.description | We show that the very light spin-1 gauge U-boson of the extra $U(1)'$ gauge model in the framework of the supersymmetric standard model extension can be a good candidate of the new light particle suggested by the HyperCP experiment. We demonstrate that the flavor changing neutral currents (FCNCs) for the HyperCP events in the decay of $Σ^{+}\to p μ^{+} μ^{-}$ can be generated at both tree and loop levels. In particular, we find that the loop induced $s\to d U$ transition due to the tensor-type interaction with the dimension-5 electric dipole operator plays a very important role on the FCNCs. Our explanation of the HyperCP data with the spin-1 U-boson is different from that based on a light pseudoscalar Higgs boson or sgoldstino in the literature. In particular, the U-boson involves a rich phenomenology in particle physics as well as cosmology. | |
| dc.description | 12 pages, 2 figures, refs. added, final version to appear in PLB | |
| dc.identifier | https://arxiv.org/abs/0708.0937 | |
| dc.identifier | http://arxiv.org/abs/0708.0937 | |
| dc.identifier | Phys.Lett.B663:400-404,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.04.053 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/200640 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | U-boson and the HyperCP exotic events | |
| dc.type | text |