Abstract
This chapter introduces the framework for flux calculations, developed over the years by the T2K Beam Working Group. This framework is used to predict the neutrino flux at ND280 and Super-K for every data-taking period, which is essential for making precise measurements of neutrino oscillation parameters. I have been the analyser responsible for producing such flux predictions in the last three oscillation measurements released by T2K [1,2,3], improving upon certain features of the existing code in the process. In addition, the flux tuning technique described here served as a starting point when developing the concept of replica target flux tuning, described in detail in Chap. 6.
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Notes
- 1.
FLUKA2011.2c has since become obsolete, and FLUKA2011.2x will be used for the next flux release.
- 2.
often with incident proton energies lower than the 30 GeV NA61 beam.
- 3.
Parametrisation named BMPT after Bonesini-Marchionni-Pietropaolo-Tabarelli de Fatis, the authors in [8].
- 4.
Here, \(r_0\) and \(r_1\) are also constants to be determined from data.
- 5.
The Lorentz invariant single particle phase space density is proportional to \(\frac{d^3\textit{\textbf{p}}}{E}\).
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Vladisavljevic, T. (2020). The T2K Flux Calculation Tuned to Thin Target Data. In: Predicting the T2K Neutrino Flux and Measuring Oscillation Parameters. Springer Theses. Springer, Cham. https://doi.org/10.1007/978-3-030-51174-6_5
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