Test of exotic scalar and tensor interactions in K_e3 decay using stopped positive kaons
High Energy Physics - Experiment
2011-01-20 v1
Abstract
The form factors of the decay K+ --> pi0 e+ nu (K_e3) have been determined from the comparison of the experimental and Monte Carlo Dalitz distributions containing about 10^5 K_e3 events. The following values of the parameters were obtained: lambda_+ = 0.0278 +- 0.0017(stat) +- 0.0015(syst), f_S/f_+(0) = 0.0040 +- 0.0160(stat) +- 0.0067(syst) and f_T/f_+(0) = 0.019 +- 0.080(stat) +- 0.038(syst). Both scalar f_S and tensor f_T form factors are consistent with the Standard Model predictions of zero values.
Keywords
Cite
@article{arxiv.hep-ex/0111048,
title = {Test of exotic scalar and tensor interactions in K_e3 decay using stopped positive kaons},
author = {A. S. Levchenko},
journal= {arXiv preprint arXiv:hep-ex/0111048},
year = {2011}
}
Comments
10 pages, 5 figures, contributed to the proceedings of NANP Conference, Dubna, June 19-23, 2001