# ICHEP 2016 Chicago

3-10 August 2016
Chicago IL USA
US/Central timezone
There is a live webcast for this event.

## Single Pion Production in Neutrino-Nucleon Reactions

Aug 8, 2016, 6:30 PM
2h
Riverwalk A/B

### Riverwalk A/B

Poster Neutrino Physics

### Speaker

Monireh Kabirnezhad

### Description

This work represents an extension of the single pion production model proposed by [D. Rein][3]. The model consists of resonant pion production ([Rein-Sehgal][1] model and based on helicity amplitudes) and non-resonant background contributions coming from three born diagrams in the helicity basis. The new work includes **lepton mass effects**, and non-resonance interaction is described by **five diagrams** as it is proposed in [HNV paper][4]. The main challenge of this work has been to calculate them in the helicity basis in order to evaluate the **interference effect** of resonant and non-resonant interactions. The present model can describe single pion production in neutrino and anti-neutrino induced charged current interactions, i.e. $$\nu_{\mu} + p \longrightarrow \mu^{-} p \pi^{+}~~~~,~~~~~~~~ \bar\nu_{\mu} + p \longrightarrow \mu^{+} p \pi^{-}$$ $$\nu_{\mu} + n \longrightarrow \mu^{-} n \pi^{+}~~~,~~~~~~~~\bar\nu_{\mu} + n \longrightarrow \mu^{+} n \pi^{-}$$ $$\nu_{\mu} + n \longrightarrow \mu^{-} p \pi^{0}~~~~,~~~~~~~~\bar\nu_{\mu} + p \longrightarrow \mu^{+} n \pi^{0}$$ The model prediction is in good agreement with all existing bubble chamber neutrino and anti-neutrino data with **W<2 GeV** cut. The comparisons are performed for angular and W distributions, $Q^{2}$-differential cross-section and integrated cross-section for different channels. A model that has better agreements with data can reduce the uncertainties in neutrino oscillation measurements which is the main goal of neutrino experiments. [1]: https://inspirehep.net/record/155538 [3]: https://inspirehep.net/record/252248 [4]: https://inspirehep.net/record/742678

### Primary author

Monireh Kabirnezhad