Expectations from T2K & NOνA in light of recent Neutrino Data

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Expectations from T2K & Expectations from T2K & NOνA NOνA in light of recent in light of recent Neutrino Data Neutrino Data S. K. Agarwalla, e-NuMI phone meeting, 27 th February, 2013

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Expectations from T2K & NOνA in light of recent Neutrino Data. Sanjib Kumar Agarwalla [email protected] Institute Of Physics, Bhubaneswar, India. S. K. Agarwalla, e-NuMI phone meeting, 27 th February, 2013. References. Based on the papers: - PowerPoint PPT Presentation

Transcript of Expectations from T2K & NOνA in light of recent Neutrino Data

Page 1: Expectations from T2K & NOνA   in light of recent Neutrino Data

Expectations from T2K & NOνAExpectations from T2K & NOνA in light of recent Neutrino Datain light of recent Neutrino Data

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

Page 2: Expectations from T2K & NOνA   in light of recent Neutrino Data

References

Based on the papers:

1)Potential of optimized NOνA for large θ13 & combined performance with a LArTPC and T2K

SKA, S. Prakash, S. Raut, S. Uma Sankar, arXiv: 1208.3644

2)Resolving the Octant of θ23 with T2K and NOνA

SKA, S. Prakash, S. Uma Sankar, arXiv: 1301.2574

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Global Analysis of World Neutrino Data

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SkA, Francesco Lombardi, T. Takeuchi, arXiv1207.3492

Ref. 53: Forero, Tortola, Valle, arXiv:1205.4018Ref. 54: Fogli, Lisi, Marrone, Montanino, Palazzo, Rotunno, arXiv:1205.5254Ref. 55: Gonzalez-Garcia, Maltoni, Salvado, Schwetz, arXiv:1209.3023

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

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Event/Background Rates in NOνA/LArTPC

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SkA, Prakash, Raut, Uma Sankar, arXiv1208.3644

NOνA has re-optimized its event selection criteria, with more events in both signal and background

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

R. Patterson, Neutrino 2012 talk

Rise in signal by 50%, background rises by a factor of 3, but we can tolerate that for large θ13

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Event/Background distribution in NOνA/LArTPC

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SkA, Prakash, Raut, Uma Sankar, arXiv1208.3644

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

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Present Generation Experiments: T2K and NOνA

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Agarwalla, Prakash, Raut, Uma Sankar, arXiv:1208.3644

Adding data from T2K and NOνA is useful to kill the intrinsic degeneracies 55% CP coverage @ 90% C.L. and 45% CP coverage @ 95% C.L. for MH discovery

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

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Present Generation Experiments: T2K and NOνA

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Agarwalla, Prakash, Raut, Uma Sankar, arXiv:1208.3644

14kt NOνA is equivalent to 10 kt LArTPC

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

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Add a small LArTPC in the NOvA Beamline

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Agarwalla, Prakash, Raut, Uma Sankar, arXiv:1208.3644

Add a small LArTPC (5 to 10 kt) in the NOνA Beamline taking data simultaneously

100% CP coverage @ 90% C.L. and 64% CP coverage @ 95% C.L. w/ 5 kt LArTPC

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

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Present Generation Experiments: T2K and NOνA

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Agarwalla, Prakash, Raut, Uma Sankar, arXiv:1208.3644

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

38% CP coverage @ 90% C.L. and 11% CP coverage @ 95% C.L. for CPV discovery

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Present Generation Experiments: T2K and NOνA

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Agarwalla, Prakash, Raut, Uma Sankar, arXiv:1208.3644

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

For CPV discovery: 14kt NOνA is equivalent to 10 kt LArTPC

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Present Generation Experiments: T2K and NOνA

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Agarwalla, Prakash, Raut, Uma Sankar, arXiv:1208.3644

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

64% CP coverage @ 90% C.L. and 56% CP coverage @ 95% C.L. w/ 5 kt LArTPC

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Snapshot of MH & CPV discovery

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Agarwalla, Prakash, Raut, Uma Sankar, arXiv:1208.3644

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

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Non-maximal 2-3 mixing & Issue of Octant

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Agarwalla, Prakash, Uma Sankar, arXiv:1301.2574

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

Preliminary results of MINOS indicate that θ23 is not maximal

Global fits to world neutrino data suggest two nearly degenerate solutions for θ23 : one in the lower octant (LO: θ23 < 45 degree) and the other in the higher octant (HO: θ23 > 45 degree)

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Octant-δCP degeneracy

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Agarwalla, Prakash, Uma Sankar, arXiv:1301.2574

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013

For L=810 km and E=2 GeV, we get for NH and ν

is degenerate with

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Octant-Hierarchy combinations: T2K and NOνA

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Agarwalla, Prakash, Uma Sankar, arXiv:1301.2574

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Octant Resolution: T2K and NOνA

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Agarwalla, Prakash, Uma Sankar, arXiv:1301.2574

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Octant Resolution: T2K and NOνA

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Agarwalla, Prakash, Uma Sankar, arXiv:1301.2574

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Octant Discovery: T2K and NOνA

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Agarwalla, Prakash, Uma Sankar, arXiv:1301.2574

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Octant Discovery: T2K and NOνA

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Agarwalla, Prakash, Uma Sankar, arXiv:1301.2574

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o If LO is the true octant, then NOνA can rule out HO at 2σ C.L., irrespective of the hierarchy and CP phase

o Addition of T2K data improves the octant sensitivity

o If HO and normal hierarchy are the true choices, then the combined data from NOνA & T2K with its designed five years run in neutrino mode, is incapable of a 2σ resolution of the octant for all CP phases

o A 2σ resolution of the octant, for all combinations of neutrino parameters, becomes possible if T2K has balanced neutrino and anti-neutrino runs of 2.5 years each

Octant Discovery: T2K and NOνA

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Thank you!

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Platinum Channel (Pμe)

Cervera etal., hep-ph/0002108 Freund etal., hep-ph/0105071

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θ13 Driven

CP odd

CP even

Solar Term

0.05

0.0096

5.2 times

S. K. Agarwalla, e-NuMI phone meeting, 27th February, 2013