On Testing for New Couplings in Top Quark Decay
| dc.creator | Nelson, Charles A. | |
| dc.date | 2001-06-13 | |
| dc.date.accessioned | 2026-07-07T03:44:47Z | |
| dc.date.available | 2026-07-07T03:44:47Z | |
| dc.description | To quantitatively assay future measurements of competing observables in t --> W b decay, we consider the g_{V-A} coupling values of the helicity decay parameters versus those for "(V-A)+ Single Additional Lorentz Structures". There are 2 dynamical phase-type ambiguities. Associated with the latter (f_M + f_E) ambiguity, there are 3 very interesting numerical puzzles at the 0.1% level. This evidence for the presence of tensorial couplings in t-decay is a consequence of the empirical value of m_W/m_t and the small, but non-zero ratio m_b/m_t. Measurement of the sign of eta_L = 0.46 (SM) due to the large interference between the W longitudinal/transverse amplitudes could exclude such tensorial couplings. Similarly, measurements of eta_L and eta_L^{'} could resolve the case of a partially-hidden T-violation associated with the additional (f_M + f_E) coupling. | |
| dc.description | Talk at "IVth Rencontres du Vietnam," Physics at Extreme Energies, July 2000, Hanoi; 3 pages, 1 postscript of 2 tables | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0106137 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0106137 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/40702 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | On Testing for New Couplings in Top Quark Decay | |
| dc.type | text |