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
5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
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The Hamiltonian for time evolution of neutrino propagation in presence Non-Standard Interactions
NSI modify the oscillation probabilities leading to departure in the event spectrum at the 2
Muon survival channel Electron survival channel
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5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
μμ
μμ
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5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
μμ
μμ ϵμτ = − 0.05
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5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
ϵμτ = − 0.05 ϵμτ = 0.05
μμ
μμ
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5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
ϵμτ = − 0.05 ϵμτ = 0.05
μμ
μμ
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5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
ϵμτ = − 0.05 ϵμτ = 0.05
μμ
μμ
The consequences of this feature is the uncertainty encountered in fitting of a particular mass
For instance, an experimentally observed event spectrum might look like either
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 The toy data is simulated with different possible NSIs and the NSI parameters are treated as a systematics in the in the fit. 8
Nν(E, cosθ) NNO
ν (ϵμτ = 0)
NIO
ν (ϵμτ ≠ 0)
χ2(ϵαβ) = ∑
E,cosθ
[NIO(ϵαβ) − NNO(ϵαβ)]2 NNO(ϵαβ)
5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
The appearance channel Pe𝜈 is affected by ϵe𝜈 and ϵe𝜐. The red dotted line gives the NMO sensitivity for Std. Oscillations. The NMO sensitivity is diluted in presence of NSI ϵe𝜈 and ϵe𝜐. 9
5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
The muon survival channel P𝜈𝜈 is affected by ϵ𝜈𝜐 and ϵ𝜐𝜐. The red dotted line gives the NMO sensitivity for Std. Oscillations. No significant impact of ϵ𝜈𝜐 and ϵ𝜐𝜐 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 |
The test statistic under consideration is 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 1𝜏 in NMO sensitivity is
higher octant. χ2(ϵαβ) = ∑
E,cosθ
[NIO(ϵαβ) − NNO(ϵαβ = 0)]2 NNO(ϵαβ = 0) 11
5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
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5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
The official 10 years ANT ARES (2007-2016) dataset containing CC-ν𝜈 events has been used in this analysis. Binning: 8 Bins in Log(E) ϵ [ 1.2, 2] times 17 Bins in cosθ BF points (w/o) underflow with DAT A BF for N at: 0.87656 BF for ϵ𝜈𝜐 at: -0.00130138 BF for ϵ𝜐𝜐 at: 0.032054 BF for 𝛦m232 at: 0.00306025 BF for θ23 at: 51.0816 BF for ẟCP at: 0 (Fixed) BF for θ13 at: 8.41128 BF for 𝛿 at: -0.02123 BF for at: 0.994749 BF for N𝜈 at: 415 (Fixed) 𝜓2/ d.of. : 131.851/ 128.
ν/ ¯ ν
5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
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Documentation: Internal note. Approval of Public plots. Writing of the thesis. NSI paper with ORCA and ANT ARES. Octant sensitivity with ORCA.
5th Nov 2019 | N. R. Khan Chowdhury | Group Meeting | IFIC, Valencia |
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