On the numerical closeness of the effective phenomenological electroweak mixing angle $θ$ and the $\MS$ parameter $\hatθ$
| dc.creator | Maltoni, M. | |
| dc.creator | Vysotsky, M. I. | |
| dc.date | 1998-06-25 | |
| dc.date | 1999-03-15 | |
| dc.date.accessioned | 2026-07-07T09:21:47Z | |
| dc.date.available | 2026-07-07T09:21:47Z | |
| dc.description | It happens that $s^2$ and $\hat s^2$ are equal with 0.1% accuracy, though they are split by radiative corrections and a natural estimate for their difference is 1%. This degeneracy occurs only for $m_t$ value close to $170\GeV$, so no deep physical reason can be attributed to it. However, another puzzle of the Standard Model, the degeneracy of $s_\Eff^2$ and $s^2$, is not independent of the previous one since a good physical reason exists for $s_\Eff^2$ and $\hat s^2$ degeneracy. We present explicit formulas which relate these three angles. | |
| dc.description | 10 pages, latex, 3 figures included; published on MPLA. A few numerical estimates are improved; journal-ref is added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9806483 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9806483 | |
| dc.identifier | Mod.Phys.Lett. A13 (1998) 3099-3108 | |
| dc.identifier | doi:10.1142/S0217732398003302 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/155151 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | On the numerical closeness of the effective phenomenological electroweak mixing angle $θ$ and the $\MS$ parameter $\hatθ$ | |
| dc.type | text |