Neutrino Scattering R&D for CP Violation Searches

Lead Research Organisation: University of Warwick
Department Name: Physics

Abstract

The predominance of matter over antimatter in the universe points directly to the existence of some currently hidden laws of physics which are different for matter and anti-matter. One focus of the search for these new laws is the recently-discovered phenomenon of neutrino oscillations. Searching for these new laws of physics will require comparing the oscillations of neutrinos and anti-neutrinos. In neutrino oscillation, the internal quantum mechanical properties of neutrinos---specifically the mass and the flavour---interfere with each other. This allows a neutrino created as one flavour to be observed as another flavour. In the next generation of neutrino experiments, we will compare muon neutrino to electron neutrino oscillation to noun antineutrino to electron antineutrino oscillation. Doing so is the best way to explore charge-parity (CP) symmetry, which stipulates that antimatter should behave just like matter if viewed through a mirror and upside down. CP violation in neutrinos would manifest itself as antineutrinos oscillating differently than neutrinos, and if this happens it is a strong clue as to the origins of the matter/antimatter imbalance in the Universe today.

Neutrino oscillation measurements depend on accurate knowledge of neutrino interactions with the target nuclei used in neutrino detectors. This R&D is dedicated to developing a new type of neutrino detectors based on high pressure gas. This will allow us to look at neutrino-nucleus interactions in more detail than ever before, and will give us much more accuracy on neutrino oscillation measurements.

Planned Impact

See lead institution proposal

Publications

10 25 50
 
Description HPTPC 
Organisation Imperial College London
Country United Kingdom 
Sector Academic/University 
PI Contribution Warwick constructed several pieces of kit for the experiment. We provided shift effort whilst the experiment was operating, analysis effort and have managed the event reconstruction framework.
Collaborator Contribution Royal Holloway built the main piece of kit - the High Pressure TPC. UCL provided part of the triggering and particle Identification equipment and Lancaster have been driving forward the offline software framework.
Impact Analysis of this data is still on-going.
Start Year 2016
 
Description HPTPC 
Organisation Lancaster University
Country United Kingdom 
Sector Academic/University 
PI Contribution Warwick constructed several pieces of kit for the experiment. We provided shift effort whilst the experiment was operating, analysis effort and have managed the event reconstruction framework.
Collaborator Contribution Royal Holloway built the main piece of kit - the High Pressure TPC. UCL provided part of the triggering and particle Identification equipment and Lancaster have been driving forward the offline software framework.
Impact Analysis of this data is still on-going.
Start Year 2016
 
Description HPTPC 
Organisation Royal Holloway, University of London
Country United Kingdom 
Sector Academic/University 
PI Contribution Warwick constructed several pieces of kit for the experiment. We provided shift effort whilst the experiment was operating, analysis effort and have managed the event reconstruction framework.
Collaborator Contribution Royal Holloway built the main piece of kit - the High Pressure TPC. UCL provided part of the triggering and particle Identification equipment and Lancaster have been driving forward the offline software framework.
Impact Analysis of this data is still on-going.
Start Year 2016
 
Description HPTPC 
Organisation University College London
Country United Kingdom 
Sector Academic/University 
PI Contribution Warwick constructed several pieces of kit for the experiment. We provided shift effort whilst the experiment was operating, analysis effort and have managed the event reconstruction framework.
Collaborator Contribution Royal Holloway built the main piece of kit - the High Pressure TPC. UCL provided part of the triggering and particle Identification equipment and Lancaster have been driving forward the offline software framework.
Impact Analysis of this data is still on-going.
Start Year 2016
 
Title Particle tracking code in high pressure gas TPCs 
Description Software is a general particle tracking code for use in high-resolution tracking detectors, such as TPCs. 
Type Of Technology Software 
Year Produced 2017 
Impact Used in the T2K experiment to generate the latest results. General use for upcoming high-resolution experiments 
 
Description High Pressure Gas TPC as neutrino detectors 
Form Of Engagement Activity A talk or presentation
Part Of Official Scheme? No
Geographic Reach Local
Primary Audience Undergraduate students
Results and Impact Talk to Warwick Physics Society attended by Warwick physics undergraduates and postgraduates. Talk generated questions and increased interest in postgraduate work in this area by final year undergraduates.
Year(s) Of Engagement Activity 2018