Document Type
Article
Department/Program
Physics
Journal Title
Physical Review Letters
Pub Date
2016
Volume
6117
Issue
6
Abstract
Neutrino-induced charged-current coherent kaon production nu(mu)A -> mu(-)K(+)A is a rare, inelastic electroweak process that brings a K+ on shell and leaves the target nucleus intact in its ground state. This process is significantly lower in rate than the neutrino-induced charged-current coherent pion production because of Cabibbo suppression and a kinematic suppression due to the larger kaon mass. We search for such events in the scintillator tracker of MINERvA by observing the final state K+, mu(-), and no other detector activity, and by using the kinematics of the final state particles to reconstruct the small momentum transfer to the nucleus, which is a model-independent characteristic of coherent scattering. We find the first experimental evidence for the process at 3 sigma significance.
Recommended Citation
Wang, Z.; Marshall, C. M.; Bercellie, A.; Aliaga, L.; Kordosky, M.; Nelson, J. K.; Norrick, A.; and Zhang, D., Evidence of Coherent K+ Meson Production in Neutrino-Nucleus Scattering (2016). Physical Review Letters, 6117(6).
10.1103/PhysRevLett.117.061802
DOI
10.1103/PhysRevLett.117.061802
