However, the flavor change process is only dependent on the masses of the various flavors being different it does not reveal anything about the neutrino’s real mass. Surprisingly, that technique also necessitates different masses for the various flavors. We know neutrinos have mass because we’ve seen them change from one flavor to another, which is only possible if the neutrinos have mass. Neutrinos are the lightest of the Standard Model’s large basic particles. Why are neutrinos so tiny, how can they have mass, and how much do they weigh? These are just a few of the issues that keep neutrino scientists awake at night. It’s a challenging puzzle to solve since neutrinos are so tiny and interact so infrequently. It’s not easy to design an experiment that will provide the answer to this riddle. This is already stunning the Standard Description, physicists’ best model of the cosmos, says that neutrinos should have no mass. A neutrino is 10 billion, billion times smaller than a grain of sand, to put it another way. One electron, for example, has a mass of 511,000 electronvolts. According to current best estimates, the sum of the three neutrinos’ masses should be less than one electronvolt. What we do know is that the three types of neutrinos have distinct masses, and that the total mass of all three is still less than one millionth that of an electron.Įlectronvolts are commonly used to measure (and weigh) particles. Experiments demonstrating that neutrinos shift type disproved this, although the neutrino’s absolute mass remains unknown. For many years, scientists thought they had no mass. The book gives excellent description of neutrino physics from the very appearance of neutrino towards the recent topics of expanding fields.It’s a simple question to which we can provide an answer for every other particle: What is the weight of it? “Mysterious behavior neutrino keeps providing us hints to reveal the secret of nature. The book clearly describes various consequences of this mystery and experiments to understand it.” – P rofessor Simon Eidelman, Budker Institute of Nuclear Physics, Novosibirsk, Russia Nonzero masses of neutrinos obviously violate the Standard model but at the same time do not contradict its most stringent tests. ![]() This book discusses one more fascinating property of neutrinos – their masses. The first feature is no longer true today and the second inspired physicists to invent various beautiful methods of analysis. “I’ve never been a big fan of neutrinos because of typically low statistics of experiments studying their properties and difficulties with reconstruction of the processes with neutrinos in the final state. A seasoned researcher and a curious layman will each benefit from the material of this interesting book.” – Professor Vitaly Efimov, University of Washington, Seattle, USA ![]() The authors present a thorough discussion of reasons why the puzzle exists and of efforts to resolve it. This puzzle is the main theme of the book. Though the physicists learned of neutrino’s existence almost a century ago and despite the fact that the neutrino is one of fundamental components of the matter around us, the neutrino mass spectrum is still unknown. In physics, the neutrino appears to look much like that elusive friend. “Imagine you have a friend whom you have known for decades and whose friendship you highly appreciate, but who adamantly refuses to reveal his name. This book is aimed primarily at physicists, but also has great educational value for PhD students.” – Doctor Wilhelm Czaplinski, University of Science and Technology, Cracow, Poland ![]() The photo gallery of these characters brings them closer to the reader. It is worth noting that the authors refer to the achievements of outstanding physicists whose work contributed to the emergence of the discussed field. While discussing the experimental problems, the necessary theoretical background is presented, with numerous references to the literature. It presents the results of experimental studies on beta-decay, double beta-decay, neutrino oscillations in vacuum and matter, the results of attempts to measure neutrino-free double beta-decay, and experiments planned for the future. “This book provides a brief overview of approximately 40 years of experimental search for a non-zero mass of neutrinos.
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