DUNE Beyond Standard Model Physics Group Meeting Nonstandard - - PowerPoint PPT Presentation

DUNE – Beyond Standard Model Physics Group Meeting Nonstandard Interactions Subgroup

• Recent activities report

March 15th, 2016 Célio Moura (UFABC – Brazil)

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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)

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Previous meetings

• We had two meetings:

– First meeting in February 9th aimed to

introduce new participants do the subject

• f 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

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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

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Previous meetings (cont.)

• Second meeting in February 23rd 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

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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.

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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

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Backup slides

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NSI Limits

Current limits for diagonal NSI in the propagation:

See: Miranda and Nunokawa, New J. Phys.17 (2015) 095002 for the original refs.

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)

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NSI Limits

Current limits for flavor changing NSI in the propagation:

See: Miranda and Nunokawa, New J. Phys.17 (2015) 095002 for the original refs.

ε eμ (-0.09, 0.04) ε μτ (−0.01, 0.01) ε eτ (−0.006, 0.006)

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NSI searches at current experiments

• NSI studies in

propagation at current experiments (MINOS,T2K, NovA) → degeneracies with

• scill. parameters

MINOS Coll. PRD 88 (2013) 072011

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NSI searches at current experiments

• NSI studies at

reactor experiments (DayaBay) → degeneracies with

• scill. parameters

Agarwalla et al, JHEP1507 (2015) 060

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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.

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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

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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]

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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.

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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

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Near term plans

• Near Detector studies:
• Identify possible signals of NSI at ND;
• evaluate simulation of ND;
• complete initial studies on sensitivities, by Jul 1st
• Far detector studies:
• perform simulation of event rate at FD;
• reproduce NSI sensitivity at FD;
• analysis of theoretically motivated NSI;

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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
• f interest

– Identification of specific tasks with time-

lines.