Constraints on R-parity violating couplings from lepton universality
| dc.creator | Lebedev, Oleg | |
| dc.creator | Loinaz, Will | |
| dc.creator | Takeuchi, Tatsu | |
| dc.date | 1999-10-21 | |
| dc.date | 1999-12-10 | |
| dc.date.accessioned | 2026-07-07T04:08:26Z | |
| dc.date.available | 2026-07-07T04:08:26Z | |
| dc.description | We analyze the one loop corrections to leptonic W and Z decays in an R-parity violating extension to the Minimal Supersymmetric Standard Model (MSSM). We find that lepton universality violation in the Z line-shape variables alone would strengthen the bounds on the magnitudes of the lambda' couplings, but a global fit on all data leaves the bounds virtually unchanged at |lambda'_{33k}| < 0.42 and |lambda'_{23k}| < 0.50 at the 2 sigma level. Bounds from W decays are less stringent: |lambda'_{33k}| < 2.4 at 2 sigma, as a consequence of the weaker Fermilab experimental bounds on lepton universality violation in W decays. We also point out the potential of constraining R-parity violating couplings from the measurement of the Upsilon invisible width. | |
| dc.description | 26pages, 8 postscript figures, REVTeX. Updated references. Typos corrected | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9910435 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9910435 | |
| dc.identifier | Phys.Rev. D61 (2000) 115005 | |
| dc.identifier | doi:10.1103/PhysRevD.61.115005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/49529 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Constraints on R-parity violating couplings from lepton universality | |
| dc.type | text |