Speaker
Description
Kaon production cross sections provide an important constraint on $K^+$ production by atmospheric neutrinos in current and future proton decay searches. Modern neutrino-nucleus event generators largely depend on theoretical models for the descriptions of backgrounds due to kaons and need to be verified by measurements.
We search for $K^+$ production in charged-current neutrino interactions inside the scintillator-based fine-grained detector of the T2K experiment. The event rate for these processes is low compared to pion production channels because of Cabibbo suppression and the relatively large kaon mass. T2K measures this process at low neutrino energies close to the threshold for strangeness production where existing measurements from bubble chambers have limited statistics. Events with a $K^+$ are identified in T2K by studying the energy deposition of tracks in the Time Projection Chamber. This poster will show the latest results for the selected kaon sample together with comparisons to different models. It will also discuss the method used to estimate the backgrounds and evaluate a one-bin cross section in the restricted phase-space.
| Poster prize | No |
|---|---|
| Given name | Katarzyna |
| Surname | Kowalik |
| First affiliation | National Centre for Nuclear Research |
| Institutional email | Katarzyna.Kowalik@ncbj.gov.pl |
| Gender | Female |
| Collaboration (if any) | T2K Collaboration |
