Measurement Of The Neutrino Oscillation Parameters Sin223 M232 Sin213 And Cp In Neutrino And Antineutrino Oscillation At T2k
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| Author | : Kirsty Elizabeth Duffy |
| Publisher | : Springer |
| Total Pages | : 180 |
| Release | : 2017-09-13 |
| Genre | : Science |
| ISBN | : 3319650408 |
This thesis reports the measurement of muon neutrino and antineutrino disappearance and electron neutrino and antineutrino appearance in a muon neutrino and antineutrino beam using the T2K experiment. It describes a result in neutrino physics that is a pioneering indication of charge-parity (CP) violation in neutrino oscillation; the first to be obtained from a single experiment. Neutrinos are some of the most abundant—but elusive—particles in the universe, and may provide a promising place to look for a potential solution to the puzzle of matter/antimatter imbalance in the observable universe. It has been firmly established that neutrinos can change flavour (or ‘oscillate’), as recognised by the 2015 Nobel Prize. The theory of neutrino oscillation allows for neutrinos and antineutrinos to oscillate differently (CP violation), and may provide insights into why our universe is matter-dominated. Bayesian statistical methods, including the Markov Chain Monte Carlo fitting technique, are used to simultaneously optimise several hundred systematic parameters describing detector, beam, and neutrino interaction uncertainties as well as the six oscillation parameters.
| Author | : Tatsuya Kikawa |
| Publisher | : Springer |
| Total Pages | : 276 |
| Release | : 2015-09-18 |
| Genre | : Science |
| ISBN | : 9812877150 |
This book is based on the author's work in the T2K long-baseline neutrino oscillation experiment, in which neutrinos are generated by a proton beam and are detected by near and far neutrino detectors. In order to achieve the precise measurement of the neutrino oscillation, an accurate understanding of the neutrino beam and the neutrino interaction is essential. Thus, the author measured the neutrino beam properties and the neutrino interaction cross sections using a near neutrino detector called INGRID and promoted a better understanding of them. Then, the author performed a neutrino oscillation analysis using the neutrino beam and neutrino interaction models verified by the INGRID measurements. As a result, some values of the neutrino CP phase are disfavored at the 90% confidence level. If the measurement precision is further improved, we may be able to discover the finite CP phase which involves the CP violation. Thus, this result is an important step towards the discovery of CP violation in the lepton sector, which may be the key to understanding the origin of the matter–antimatter asymmetry in the universe.
| Author | : Jennifer A. Thomas |
| Publisher | : World Scientific |
| Total Pages | : 274 |
| Release | : 2008 |
| Genre | : Science |
| ISBN | : 9812771972 |
This book reviews the status of a very exciting field OCo neutrino oscillations OCo at a very important time. The fact that neutrinos have mass has only been proved in the last few years and the acceptance of that fact has opened up a whole new area of study to understand the fundamental parameters of the mixing matrix. The book summarizes the results from all the experiments which have played a role in the measurement of neutrino oscillations and briefly describes the scope of some new planned experiments. Contributions include a theoretical introduction by Stephen Parke from FNAL, as well as articles from all the major experimental groups who have been pivotal in uncovering the nature of the neutrino mass. Sample Chapter(s). Chapter 1: Neutrino Oscillation Phenomenology (677 KB). Contents: Neutrino Oscillation Phenomenology (S J Parke); The Super-Kamiokande Experiment (C W Walter); Sudbury Neutrino Observatory (S J M Peeters & J R Wilson); Neutrino Oscillation Physics with KamLAND: Reactor Antineutrinos and Beyond (K M Heeger); K2K: KEK to Kamioka Long-Baseline Neutrino Oscillation Experiment (R J Wilkes); MINOS (P Vahle); The LSND and KARMEN Neutrino Oscillation Experiments (W C Louis); MiniBooNE (S J Brice); The OPERA Experiment in the CNGS Beam (D Autiero et al.); The T2K Experiment (D L Wark); The NO?A Experiment (G J Feldman); Double Chooz (G A Horton-Smith & T Lasserre); Daya Bay: A Sensitive Determination of ? 13 with Reactor Antineutrinos (K B Luk & Y Wang). Readership: Physicists, researchers and graduate students in high energy/nuclear and particle physics."
| Author | : Yoshiyuki Fukuda |
| Publisher | : World Scientific |
| Total Pages | : 399 |
| Release | : 2002-12-30 |
| Genre | : Science |
| ISBN | : 9814487384 |
Contents:Solar Neutrinos:The Latest Solar Neutrino Results in Super-Kamiokande (Y Koshio)Weak Current in Deuterium (T Sato)Solar Neutrino Phenomenology and Future:Solar Neutrino Oscillations (M C Gonzalez-Garcia)The Status of Resonant Spin Flavor Precession (C S Lim)Atmospheric Neutrinos:Status of the Atmospheric Neutrino Studies (M D Messier)Cosmic Ray Measurements for Atmospheric Neutrino with BESS-TeV (K Abe)Oscillation Phenomenology I:Calculations of the Atmospheric ν Fluxes (P Lipari)Three-Flavor Analysis of Atmospheric and Solar Neutrinos (A Marrone)Absolute Neutrino Mass:Neutrinoless Double Beta Decay and Neutrino Oscillations (H V Klapdor-Kleingrothaus)Accelerator Neutrinos, CPV:The MINOS Experiment (M D Messier)The JHF-Kamioka Neutrino Project (T Kajita)Models and GUTs:Proton Decay in the Semi-Simple Unification Model (T Watari)Leptogenesis via LHu Flat Direction (M Fujii)Lepton Flavor Violation:Probing Physics Beyond the Standard Model from Lepton Sector (J Hisano)Oscillation Phenomenology II:Four Puzzles of Neutrino Mixing (S M Barr)Supernova Neutrinos:Supernova Neutrinos (J F Beacom)and other papers Readership: Researchers in high energy physics. Keywords:Solar Neutrinos;Atmospheric Neutrinos;Oscillation Phenomenology;Neutrino Mass;Accelerator Neutrinos;CP Violation;GUTs;Lepton Flavor Violation;Supernova Neutrinos
| Author | : Juan Pedro Ochoa-Ricoux |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 300 |
| Release | : 2011-04-11 |
| Genre | : Science |
| ISBN | : 1441979492 |
The centerpiece of the thesis is the search for muon neutrino to electron neutrino oscillations which would indicate a non-zero mixing angle between the first and third neutrino generations (θ13), currently the “holy grail” of neutrino physics. The optimal extraction of the electron neutrino oscillation signal is based on the novel “library event matching” (LEM) method which Ochoa developed and implemented together with colleagues at Caltech and at Cambridge, which improves MINOS’ (Main Injector Neutrino Oscillator Search) reach for establishing an oscillation signal over any other method. LEM will now be the basis for MINOS’ final results, and will likely keep MINOS at the forefront of this field until it completes its data taking in 2011. Ochoa and his colleagues also developed the successful plan to run MINOS with a beam tuned for antineutrinos, to make a sensitive test of CPT symmetry by comparing the inter-generational mass splitting for neutrinos and antineutrinos. Ochoa’s in-depth, creative approach to the solution of a variety of complex experimental problems is an outstanding example for graduate students and longtime practitioners of experimental physics alike. Some of the most exciting results in this field to emerge in the near future may find their foundations in this thesis.
| Author | : Fernando Ferroni |
| Publisher | : IOS Press |
| Total Pages | : 493 |
| Release | : 2009 |
| Genre | : Science |
| ISBN | : 1607500388 |
"This volume offers a valuable insight into various aspects of the ongoing work directed at measuring neutrino mass. It took twenty years to refute the assertions of Bethe and Peierls that neutrinos were not observable, but it has since been realised that much can be learnt from these particles. The moral is, as Fiorini argues here, that the study of neutrinos was and remains demanding but rewarding. Subjects addressed in this volume include: clarifying the meaning of the Klapdor-Kleingrothaus results, probing the Majorana nature of neutrinos, observing lepton number violating effects for the first time, studying the end point of the spectrum in the search for neutrino masses and speculating whether it is possible to measure neutrino masses in cosmology. Lectures are enriched with rich historical overviews and valuable introductory material. Attention is also given to theoretical topics such as the evolution of the concept of mass in particle physics, a status report on neutrino oscillations and current discussion on neutrino masses. The reader is further reminded that neutrino masses may also have some bearing on the very origin of the matter among us, and have many deep links with other important lines of current physics research." --Book Jacket.
| Author | : Takaaki Kajita |
| Publisher | : World Scientific Publishing Company |
| Total Pages | : 107 |
| Release | : 2016-01-13 |
| Genre | : Science |
| ISBN | : 9814759317 |
Takaaki Kajita and Arthur McDonald have been jointly awarded the 2015 Nobel Prize in Physics "for the discovery of neutrino oscillations, which shows that neutrinos have mass". Takaaki Kajita is a Japanese physicist who is well known for neutrino experiments at the Kamiokande and the even more outsized Super-Kamiokande. This volume of collected works of Kajita on neutrino oscillations provides a good glimpse into the rise of Asian research in the frontiers of neutrino physics. Japan is now a major force in the study of the three families of neutrinos. Much remains to be done to clarify the Dirac vs. Majorana nature of the neutrino, and the cosmological implications of the neutrino. The collected works of Kajita and his Super-Kamiokande group will leave an indelible footprint in the history of big and better science. Copyright of the cover image belongs to Kamioka Observatory, ICRR (Institute for Cosmic Ray Research), The University of Tokyo.
| Author | : Kei Ieki |
| Publisher | : Springer |
| Total Pages | : 199 |
| Release | : 2018-03-31 |
| Genre | : Science |
| ISBN | : 9784431567073 |
In this thesis the author contributes to the analysis of neutrino beam data collected between 2010 and 2013 to identify νμ→νe events at the Super-Kamiokande detector. In particular, the author improves the pion–nucleus interaction uncertainty, which is one of the dominant systematic error sources in T2K neutrino oscillation measurement. In the thesis, the measurement of νμ→νe oscillation in the T2K (Tokai to Kamioka) experiment is presented and a new constraint on δCP is obtained. This measurement and the analysis establish, at greater than 5σ significance, the observation of νμ→νe oscillation for the first time in the world. Combining the T2K νμ→νe oscillation measurement with the latest findings on oscillation parameters including the world average value of θ13 from reactor experiments, the constraint on the value of δCP at the 90% confidence level is obtained. This constraint on δCP is an important step towards the discovery of CP violation in the lepton sector.
| Author | : Thiago Junqueira de Castro Bezerra |
| Publisher | : Springer |
| Total Pages | : 202 |
| Release | : 2015-01-27 |
| Genre | : Science |
| ISBN | : 4431553754 |
This book is based on the author’s work at the Double Chooz Experiment, from 2010 to 2013, the goal of which was to search for electronic anti-neutrino disappearance close to nuclear power plant facilities as a result of neutrino oscillation. Starting with a brief review of neutrino oscillation and the most important past experimental findings in this field, the author subsequently provides a full and detailed description of a neutrino detector, from simulation aspects to detection principles, as well as the data analysis procedure used to extract the oscillation parameters. The main results in this book are 1) an improvement on the mixing angle, θ13, uncertainty by combining two data-sets from neutrino event selection: neutron capture on gadolinium and on hydrogen; and 2) the first measurement of the effective squared mass difference by combining the current reactor neutrino experimental data from Daya Bay, Double Chooz and RENO and taking advantage of their different reactor-to-detector distances. The author explains how these methods of combining data can be used to estimate these two values. Each method results in the best possible sensitivity for the oscillation parameters with regard to reactor neutrinos. They can be used as a standard method on the latest data releases from the current experiments.
| Author | : K Kaneyuki |
| Publisher | : World Scientific |
| Total Pages | : 328 |
| Release | : 2001-12-21 |
| Genre | : Science |
| ISBN | : 9814489379 |
The aim of this workshop was to put together the efforts from various fields necessary for understanding neutrino oscillations in detail, from both experimental and theoretical points of view. One of the main experimental issues was to understand the absolute flux of both the atmospheric and the solar neutrinos in order to obtain detailed parameter information on neutrino oscillations.The proceedings contain many discussions on phenomenology and theories about neutrino mass and oscillations. The topics include: solar neutrino oscillations; neutrino mixing and the neutrino mass matrices; the origin of the neutrino masses; long baseline neutrino oscillation experiments; KamLAND and low energy neutrino measurements. Related subjects such as μ-eγ experiments and proton decay are also discussed.
