Measurements of Semileptonic KL Decay Form Factors
| dc.creator | KTeV Collaboration | |
| dc.creator | Alexopoulos, T. | |
| dc.date | 2004-06-01 | |
| dc.date.accessioned | 2026-07-07T10:28:26Z | |
| dc.date.available | 2026-07-07T10:28:26Z | |
| dc.description | We present new measurements of KL semileptonic form factors using data collected in 1997 by the KTeV (E832) experiment at Fermilab. The measurements are based 1.9 million KL->pi e nu and 1.5 million KL->pi mu nu decays. For f+(t), we measure both a linear and quadratic term lambda+' = (20.64 +- 1.75)E-3 and lambda+'' = (3.20 +- 0.69)E-3. For f0(t), we find lambda0 = (13.72 +- 1.31)E-3. These form factors are consistent with K+- form factors, suggesting that isospin symmetry breaking effects are small. We use our measured values of the form factors to evaluate the decay phase space integrals, IK(e) = 0.15350 +- 0.00105 and IK(mu) =0.10165 +- 0.00080, where errors include uncertainties arising from the form factor parametrizations. | |
| dc.description | Submitted to Phys. Rev. D; 15 pages, 14 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ex/0406003 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/0406003 | |
| dc.identifier | Phys.Rev.D70:092007,2004 | |
| dc.identifier | doi:10.1103/PhysRevD.70.092007 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/177444 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Measurements of Semileptonic KL Decay Form Factors | |
| dc.type | text |