Improved KL->pi e nu Form Factor and Phase Space Integral with Reduced Model Uncertainty
Loading...
Date
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
Using the published KTeV sample of 2 million KL-> pi e nu decays and a new form factor expansion with a rigorous bound on higher order terms, we present a new determination of the KL->pi e nu form factor and phase space integral. Compared to the previous KTeV result, the uncertainty in the new form factor expansion is negligible and results in an overall uncertainty in the phase space integral (IKe) that is a factor of two smaller: IKe = 0.15392 +- 0.00048 \.
3 pages, 2 figures, submitted to PRD Rapid Communication
3 pages, 2 figures, submitted to PRD Rapid Communication