PhyStat-v Workshop on Statistical Issues in Experimental Neutrino Physics

Session

Short Poster Talks

30 May 2016, 16:40

Description

Short introductory talks from poster presenters

43. Estimation of neutrino oscillation parameters with Markov Chain Monte Carlo

Ms Leïla HAEGEL (Université de Genève)

30/05/2016, 16:40

PhyStat-nu

Poster

The T2K experiment is a long-baseline accelerator neutrino experiment with the ability to measure Δm32, θ23, θ13 and δCP from (anti-)νμ disappearance as well as (anti-)νe appearance. In this poster we show a Bayesian framework using the Metropolis-Hastings algorithm to estimate the oscillation parameters. The advantage of Markov Chain Monte Carlo is its ability to scan a multidimensional...

24. Statistical techniques used for neutrino oscillation analyses with the VALOR framework

Davide Sgalaberna (University of Geneva)

30/05/2016, 16:46

Poster

VALOR is a well established neutrino fitting group that is leading several neutrino oscillation analyses in T2K, producing world leading results. The analysis framework has been validated and optimised for both a hybrid Bayesian-Frequentist approach to fitting parameters, where the systematic parameters are marginalised, as well as a frequentist analysis, that consists of the likelihood ratio...

28. Anti-𝜈e Appearance at T2K using VALOR

Mr raj shah (STFC, UK)

30/05/2016, 16:52

Poster

VALOR is a well established neutrino fitting group that is leading several neutrino oscillation analyses in T2K, producing world leading results. The analysis framework has been validated and optimised for both a hybrid Bayesian-Frequentist approach to fitting parameters, where the systematic parameters are marginalised, as well as a frequentist analysis, that consists of the likelihood ratio...

30. Tuning generators to the global neutrino cross-section dataset.

Mr John Stowell (University of Sheffield)

30/05/2016, 16:58

Poster

The T2K Neutrino Oscillation Experiment uses a prior estimation of a scattering cross-section model when generating nominal Monte-Carlo (MC) neutrino interaction events. A selection of the available models in the NEUT MC generator are fit to a range of historical neutrino interaction cross-section measurements made external to T2K. A nominal model is then chosen which is capable of finding the...

42. Empirical Parametrisations of Neutrino Oscillations

Dr Phillip Litchfield (Imperial College London), Dr Phillip Litchfield (Imperial College London)

30/05/2016, 17:04

Poster

The discovery of neutrino oscillations driven by the U[e3] element of the PMNS mixing matrix has prompted a step change in the way neutrino oscillation experiments are analysed, commonly described by the shorthand of "switching from a 2-neutrino to 3-neutrino picture". The difference is less clear cut than this. On the one hand, some older measurements used parametrisations that implicitly...

33. Neutrino Oscillation on Epicycles

Benda Xu (RCNS, Tohoku Univ., Japan)

30/05/2016, 17:10

Poster

Global fit of neutrino oscillations is shown to be equivalent to Fourier transformation in a complex plane. Adding new sterile neutrinos or new oscillation modes is equivalent to adding Fourier components. Therefore new sterile neutrinos should be introduced with physics motivations beyond phenomenology.

40. Study of the Neutrino Oscillation at Very Short Baseline

Mr Youngju Ko (Chung-Ang University)

30/05/2016, 17:16

Poster

Verification of neutrino oscillations at a very short baseline of a nuclear reactor is one way to check the possible existence of the sterile neutrinos. Challenging features of this short baseline experiment come from: the high muon rates at shallow depth of overburden, the escaping gamma energy due to the small size of the detector in a limited space, and the inaccurate predictions of the...

44. Optimization of detector design of NuPRISM, a new water-Cherenkov neutrino near-detector

Tomoyo Yoshida (Tokyo Institute of Technology)

30/05/2016, 17:22

PhyStat-nu

Poster

NuPRISM is a proposed novel water Cherenkov detector in the J-PARC neutrino beam line that will make neutrino cross section measurements critical to both T2K and T2HK as well as searches for short baseline neutrino oscillations. By observing neutrino interactions over off-axis angles ranging from 1 to 4 degrees with NuPRISM detector, systematic uncertainties for T2K and T2HK oscillation...

38. Boosted Decision Tree Approach to Track Finding in the COMET Experiment

Mr Ewen Gillies (Imperial College London)

30/05/2016, 17:28

Poster

The Coherent Muon to Electron Transition (COMET) experiment is designed to search for muon to electron conversion, a process which has very good sensitivity to Beyond the Standard Model physics. The first phase of the experiment is currently under construction at J-PARC. This phase is designed to probe muon to electron conversion 100 times better than the current limit. The experiment will...