DUNE – Beyond Standard Model Physics Group Meeting Nonstandard Interactions Subgroup ● Recent activities report March 15 th , 2016 Célio Moura (UFABC – Brazil)
Group participants (or that expressed interest) ● Omar Miranda (Cinvestav – Mexico); ● Mariam Tortola (IFIC – Spain); ● Diego Aristizabal and Atri Bhattacharya (Univ. Liege – Belgium); ● Animesh Chatterjee (UTA – USA) ● Oscar Zapata and Diego Restrepo (Univ. de Antioquia - Colombia) ● Fernando Rossi-Torres, Orlando Peres et al. (UNICAMP – Brazil); ● Alberto Gago and Margot Delgado (PUC – Peru) ● Amir Khan (“JUNO” - China) 2
Previous meetings ● We had two meetings: – First meeting in February 9 th aimed to introduce new participants do the subject of the group and present one simulation tool. We had 3 presentations: – By André de Gouvêa about his article with Kevin Kelly http://arxiv.org/abs/1511.05562 – By Pilar Coloma about her article http://arxiv.org/abs/1511.06357 3
Previous meetings (cont.) ● First meeting (cont.) – Presentation by Animesh about using GloBES ● The slides of the presentations in this meeting are in: – https://drive.google.com/open?id=0Bz _dKWYW5t-lM3pRZC1HWlpjMUk 4
Previous meetings (cont.) ● Second meeting in February 23 rd aimed to give more details about the experiment – There was one presentation by Mary Bishai – This presentation shows cases in which this group can improve previous works – The slides can be found in: https://drive.google.com/open?id=0Bwc iidiiSXJqSy1SY09lRHA5eFk 5
Some work done ● Animesh and I contacted Laura Fields (to get the latest GLoBES formated neutrino flux files for DUNE) and Dan Cherdack (for having access to the Fast MC code). ● Animesh reproduced first sensitivity plots using GLoBES and uploaded code to the repository so that other groups can have access to it. I need to be inform them about this. 6
Next steps ● Groups are starting to work on different subjects of interest for them: – O. Miranda and M. Tortola are working on Non-Unitarity and I'll work with them and Animesh to implement it in GloBES – D. Aristizabal and A. Bhattacharya will look at possible interplay with IceCube for the diagonal oscillation matrix elements – F. Rossi-Torres et al. are waiting for the approval of some group members to be part of DUNE 7
Backup slides 8
NSI Limits Current limits for diagonal NSI in the propagation: ε ee − ε μμ (0.02, 0.51) ε τ τ − ε μμ (−0.01, 0.03) ε τ τ − ε μμ (−0.049, 0.049) ε τ τ − ε μμ (−0.036, 0.031) See: Miranda and Nunokawa, New J. Phys.17 (2015) 095002 for the original refs. 9
NSI Limits Current limits for flavor changing NSI in the propagation: ε eμ (-0.09, 0.04) ε μτ (−0.01, 0.01) ε eτ (−0.006, 0.006) See: Miranda and Nunokawa, New J. Phys.17 (2015) 095002 for the original refs. 10
NSI searches at current experiments MINOS Coll. PRD 88 (2013) 072011 ● NSI studies in propagation at current experiments (MINOS,T2K, NovA) → degeneracies with oscill. parameters 11
NSI searches at current experiments Agarwalla et al, JHEP1507 (2015) 060 ● NSI studies at reactor experiments (DayaBay) → degeneracies with oscill. parameters 12
NSI searches in DUNE ● DUNE may be sensitive to NSI at propagation (FD) and detection (mainly ND). ● Sensitivity studies to NSI at the FD (propagation) → degeneracies between NSI and oscillation parameters: - de Gouvêa and Kelly, arXiv:1511.05562 [hep-ph]. - Coloma, arXiv:1511.06357 [hep-ph] . - Masud et al, arXiv:1510.08261 [hep-ph]. ● NSI searches at ND with new technology detector. 13
Model-dependent studies ● Typical studies rely on effective formulations and/or parameterizations ● Model-dependent studies, although less general, are welcome too! ● Constraints apply directly on “fundamental” parameters ● Correlations between observables belonging to different domains is possible: increase testability! ● Can be related with more fundamental scenarios: Can be used to relate with other theoretical puzzles 14
Example based on new U(1)' Farzan & Shoemaker arXiv: arXiv:1512.09147 ● Flavor-violating NSI related with rare tau decays [DUNE interplay with tau physics] ● Related with Higgs-flavor-violating processes [DUNE-LHC interplay] 15
NHL and non-unitarity ● Neutral heavy leptons (NHL) may show up in low energy neutrino oscillations through non-unitary effects in the neutrino mixing matrix; ● Although deviations from unitarity are expected to be small in magnitude, the additional phases are not necessarily small and could be a signal for new physics. 16
NHL and non-unitarity ● To illustrate the effect of a possible new phase we show in this figure the conversion probability for a neutrino energy of 1 GeV. PRD 92 (2015) 053009 ● A similar effect can be present due to NSI (Masud et al 1510.08261 17
Near term plans ● Near Detector studies: - Identify possible signals of NSI at ND; - evaluate simulation of ND; - complete initial studies on sensitivities, by Jul 1 st ● Far detector studies: - perform simulation of event rate at FD; - reproduce NSI sensitivity at FD; - analysis of theoretically motivated NSI; 18
Near term plans ● Far detector studies (cont.): -explore the sensitivity to a new phase; -study the possible constraints to this phase for a combined analysis with other long baseline detectors. ● Organizing of all the interested people in groups of interest – Identification of specific tasks with time- lines. 19
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