NMO in presence of NSI N. R. Khan Chowdhury 1 5th Nov 2019 | N. - PowerPoint PPT Presentation

NMO in presence of NSI N. R. Khan Chowdhury 1 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

Non-Standard Interactions (NSI) The Hamiltonian for time evolution of neutrino propagation in presence Non-Standard Interactions of neutrinos reads NSI modify the oscillation probabilities leading to departure in the event spectrum at the Muon survival channel Electron survival channel 2

Phenomenology of NSI P NO μμ P IO μμ 3 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

Phenomenology of NSI ϵ μτ = − 0.05 P NO μμ P IO μμ 4 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

Phenomenology of NSI ϵ μτ = − 0.05 ϵ μτ = 0.05 P NO μμ P IO μμ 5 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

Phenomenology of NSI ϵ μτ = − 0.05 ϵ μτ = 0.05 P NO μμ P IO μμ 6 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

Phenomenology of NSI ϵ μτ = − 0.05 ϵ μτ = 0.05 P NO μμ P IO μμ 7 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

NSI Implications on NMO The consequences of this feature is the uncertainty encountered in fitting of a particular mass ordering model to experimental data. 
 For instance, an experimentally observed event spectrum might look like either N NO N ν ( E , cos θ ) ν ( ϵ μτ = 0) or . N IO ν ( ϵ μτ ≠ 0) This mass ordering - sign of NSI degeneracy can make the determination of mass ordering more difficult => a higher precision is required to disentangle the mass orderings. The test statistic under consideration is [ N IO ( ϵ αβ ) − N NO ( ϵ αβ )] 2 χ 2 ( ϵ αβ ) = ∑ N NO ( ϵ αβ ) E , cos θ The toy data is simulated with different possible NSIs and the NSI parameters are treated as a systematics in the in the fit. 8 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

One-NSI The appearance channel P e 𝜈 is affected by ϵ e 𝜈 and ϵ e 𝜐 . The red dotted line gives the NMO sensitivity for Std. Oscillations. The NMO sensitivity is diluted in presence of NSI 
 ϵ e 𝜈 and ϵ e 𝜐 . 9 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

One-NSI The muon survival channel P 𝜈𝜈 is affected by ϵ 𝜈𝜐 and ϵ 𝜐𝜐 . The red dotted line gives the NMO sensitivity for Std. Oscillations. No significant impact of ϵ 𝜈𝜐 and ϵ 𝜐𝜐 is foreseen on NMO sensitivity. (The effect is washed out once marginalised over 
 the NSI parameter.) 10 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

Multiple NSIs [ N IO ( ϵ αβ ) − N NO ( ϵ αβ = 0)] 2 χ 2 ( ϵ αβ ) = ∑ The test statistic under consideration is N NO ( ϵ αβ = 0) E , cos θ The toy data is simulated assuming Std. Oscillations. NSI parameters are treated as systematics while fitting over the wrong ordering (IO). The effect of individual NSI on the NMO 
 sensitivity is estimated by releasing them 
 in succession in the fit. A dilution of 1 𝜏 in NMO sensitivity is 
 observed for a set of values of θ 23 in the 
 higher octant. 11 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

NSI with ANT ARES 12 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

NSI limits on ϵ 𝜈𝝊 with ANT ARES ARES (2007-2016) dataset containing CC- ν 𝜈 events has been used in The official 10 years ANT this analysis. Binning: 8 Bins in Log(E) ϵ [ 1.2, 2] times 17 Bins in cos θ BF points (w/o) underflow with DAT A BF for N at: 0.87656 BF for ϵ 𝜈𝜐 at: -0.00130138 BF for ϵ 𝜐𝜐 at: 0.032054 BF for 𝛦 m 232 at: 0.00306025 BF for θ 23 at: 51.0816 BF for ẟ CP at: 0 (Fixed) BF for θ 13 at: 8.41128 BF for 𝛿 at: -0.02123 ν / ¯ ν BF for at: 0.994749 BF for N 𝜈 at: 415 (Fixed) 𝜓 2 / d.of. : 131.851/ 128. 13 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

Summary/Plans Documentation: Internal note. Approval of Public plots. Writing of the thesis. NSI paper with ORCA and ANT ARES. Octant sensitivity with ORCA. 14 5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |

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