Minimising Systematic Uncertainties in the Determination of Theta_13 at T2K
Lead Research Organisation:
Imperial College London
Department Name: Physics
Abstract
Neutrinos are the most mysterious of the fundamental particles. These electrically neutral leptons are nearly massless and only interact via the weak nuclear force, so they are exceedingly hard to detect. However, they are created copiously in the earth, in the atmosphere, in the sun, and out in the cosmos. Neutrinos are key players in the processes that heat the earth, make the sun shine, and make supernovae explode. Despite the fact that neutrinos are everywhere, their intrinsic properties have puzzled us for years. Thanks to a series of exciting discoveries over the past decade, we now know that the elusive behavior of neutrinos probes the deepest questions in particle physics. Studying the most basic constituents of matter, and how they interact with each other, is the primary challenge of particle physics. The current sum of knowledge in the field is called the Standard Model, and it has been remarkably successful in describing the microscopic universe. The model contains two major classes of building blocks: quarks and leptons. For example, protons are made of three quarks, while electrons and neutrinos are types of leptons. However, we know that the Standard Model is incomplete because there must be a more fundamental theory that explains how the two major classes of building blocks are related to each other. Precise measurements of the properties of these two sectors provide our best clues to the form of the underlying theory. But it's not a matter of dotting the i's and crossing the t's; much work remains to be done. In 1998 there was a major surprise in the lepton sector: the three kinds of neutrinos were observed to change from one into another. This kind of oscillation is only possible if neutrinos have mass and mix with each other, thanks to an interesting twist of quantum mechanics. This recent discovery was the first experimental evidence for neutrino mass, and is theoretically attractive because it has been known for decades that the quarks can mix with each other. Uncovering the similarities between the quark and lepton sectors will help to reveal the deeper symmetries of the fundamental theory. The physics of mixing between neutrinos---or between quarks---can be described in terms of six independent parameters. The first generation of neutrino oscillation experiments measured four of the six. To capture the remaining two parameters will require measurements with unprecedented accuracy. The next generation, led by the T2K experiment in Japan, will improve upon the precision of the existing four parameters, and, starting in 2009, T2K will make the world's best attempt to measure the remaining unknowns. Understanding the mysterious properties of neutrinos may illuminate the way to the fundamental theory beyond the Standard Model. We are now embarking on a bold programme to improve the accuracy of neutrino mixing measurements. This is a necessary next step toward answering the key questions of particle physics.
Publications
Abe K
(2013)
Measurement of neutrino oscillation parameters from muon neutrino disappearance with an off-axis beam.
in Physical review letters
Abe K
(2014)
Precise measurement of the neutrino mixing parameter ?23 from muon neutrino disappearance in an off-axis beam.
in Physical review letters
Abe K
(2018)
Search for CP Violation in Neutrino and Antineutrino Oscillations by the T2K Experiment with 2.2×10^{21} Protons on Target.
in Physical review letters
Abe K
(2019)
Search for neutral-current induced single photon production at the ND280 near detector in T2K
in Journal of Physics G: Nuclear and Particle Physics
Abe K
(2012)
Measurements of the T2K neutrino beam properties using the INGRID on-axis near detector
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Abe K
(2012)
First muon-neutrino disappearance study with an off-axis beam
in Physical Review D
Abe K
(2019)
Search for heavy neutrinos with the T2K near detector ND280
in Physical Review D
Abe K
(2014)
Observation of electron neutrino appearance in a muon neutrino beam.
in Physical review letters
Abe K
(2013)
Measurement of the inclusive ? µ charged current cross section on carbon in the near detector of the T2K experiment
in Physical Review D
Abe K
(2013)
Publisher's Note: T2K neutrino flux prediction [Phys. Rev. D 87 , 012001 (2013)]
in Physical Review D
Abe K
(2011)
Indication of electron neutrino appearance from an accelerator-produced off-axis muon neutrino beam.
in Physical review letters
Abe K
(2014)
Measurement of the inclusive ? µ charged current cross section on iron and hydrocarbon in the T2K on-axis neutrino beam
in Physical Review D
Abe K
(2019)
Search for light sterile neutrinos with the T2K far detector Super-Kamiokande at a baseline of 295 km
in Physical Review D
Abe K
(2011)
The T2K experiment
in Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Abe K
(2014)
Measurement of the intrinsic electron neutrino component in the T2K neutrino beam with the ND280 detector
in Physical Review D
Abe K
(2013)
T2K neutrino flux prediction
in Physical Review D
Abe K
(2013)
Evidence of electron neutrino appearance in a muon neutrino beam
in Physical Review D
Adamson P
(2009)
Search for muon-neutrino to electron-neutrino transitions in MINOS.
in Physical review letters
Aguilar-Arevalo A
(2013)
First measurement of the muon antineutrino double-differential charged-current quasielastic cross section
in Physical Review D
Aguilar-Arevalo A
(2011)
Measurement of the neutrino component of an antineutrino beam observed by a nonmagnetized detector
in Physical Review D
Aguilar-Arevalo A
(2010)
First measurement of the muon neutrino charged current quasielastic double differential cross section
in Physical Review D
Aguilar-Arevalo A
(2015)
Measurement of the antineutrino neutral-current elastic differential cross section
in Physical Review D
Aguilar-Arevalo A
(2013)
Test of Lorentz and CPT violation with short baseline neutrino oscillation excesses
in Physics Letters B
Aguilar-Arevalo A
(2011)
Measurement of neutrino-induced charged-current charged pion production cross sections on mineral oil at E ? ~ 1 GeV
in Physical Review D
Aguilar-Arevalo A
(2010)
Publisher's Note: Measurement of the Ratio of the ? µ Charged-Current Single-Pion Production to Quasielastic Scattering with a 0.8 GeV Neutrino Beam on Mineral Oil [Phys. Rev. Lett. 103 , 081801 (2009)]
in Physical Review Letters
Aguilar-Arevalo A
(2010)
Measurement of ? µ and ? ¯ µ induced neutral current single p 0 production cross sections on mineral oil at E ? ~ O (1 GeV)
in Physical Review D
Aguilar-Arevalo A
(2011)
Measurement of ? µ -induced charged-current neutral pion production cross sections on mineral oil at E ? ? 0.5 - 2.0 GeV
in Physical Review D
Aguilar-Arevalo AA
(2009)
Unexplained excess of electronlike events from a 1-GeV neutrino beam.
in Physical review letters
Aguilar-Arevalo AA
(2010)
Event excess in the MiniBooNE search for ¯?µ?¯?e oscillations.
in Physical review letters
Aguilar-Arevalo AA
(2018)
First Measurement of Monoenergetic Muon Neutrino Charged Current Interactions.
in Physical review letters
Allan D
(2013)
The electromagnetic calorimeter for the T2K near detector ND280
in Journal of Instrumentation
Cheng G
(2011)
Measurement of K + production cross section by 8 GeV protons using high-energy neutrino interactions in the SciBooNE detector
in Physical Review D
Cheng G
(2012)
Dual baseline search for muon antineutrino disappearance at 0.1 eV 2 < ? m 2 < 100 eV 2
in Physical Review D
Hiraide K
(2008)
Search for charged current coherent pion production on carbon in a few-GeV neutrino beam
in Physical Review D
Jiang M
(2019)
Atmospheric neutrino oscillation analysis with improved event reconstruction in Super-Kamiokande IV
in Progress of Theoretical and Experimental Physics
Kurimoto Y
(2010)
Improved measurement of neutral current coherent p 0 production on carbon in a few-GeV neutrino beam
in Physical Review D
Kurimoto Y
(2010)
Measurement of inclusive neutral current p 0 production on carbon in a few-GeV neutrino beam
in Physical Review D
Mahn K
(2012)
Dual baseline search for muon neutrino disappearance at 0.5 eV 2 < ? m 2 < 40 eV 2
in Physical Review D
Nakajima Y
(2011)
Measurement of inclusive charged current interactions on carbon in a few-GeV neutrino beam
in Physical Review D
Wascko M
(2012)
Recent Measurements of Neutrino-Nucleus Quasi-Elastic Scattering
in Nuclear Physics B - Proceedings Supplements