Download or read book Confronting the Conventional Ideas of Grand Unification with Fermion Masses Neutrino Oscillations and Proton Decay written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It is noted that one is now in possession of a set of facts, which may be viewed as the matching pieces of a puzzle; in that all of them can be resolved by just one idea--that is grand unification. These include (i) the observed family-structure, (ii) quantization of electric charge, (iii) the meeting of the three gauge couplings, (iv) neutrino oscillations[in particular the value[Delta]m[sup 2]([nu][sub[mu]]-[nu][sub[tau]]), suggested by SuperK], (v) the intricate pattern of the masses and mixings of the fermions, including the smallness of V[sub cb] and the largeness of[theta][sub[nu][sub[mu]][nu][sub[tau]]][sup osc], and (vi) the need for B-L as a generator to implement baryogenesis (via leptogenesis). All these pieces fit beautifully together within a single puzzle board framed by supersymmetric unification, based on either SO(10) or a string-unified G(224)-symmetry. The two notable pieces of the puzzle still missing, however, are proton decay and supersymmetry. A concrete proposal is presented within a predictive SO(10)/G(224)-framework that successfully describes the masses and mixings of all fermions, including the neutrinos--with eight predictions, all in agreement with observation. Within this framework, a systematic study of proton decay is carried out, which (a) pays special attention to its dependence on the fermion masses, and (b) limits the threshold corrections so as to preserve natural coupling unification. The study updates prior work by Babu, Pati and Wilczek, in the context of both MSSM and its (interesting) variant, the so-called ESSM, by allowing for improved values of the matrix elements and of the short- and long-distance renormalization effects. It shows that a conservative upper limit on the proton lifetime is about (1/3-2) x 10[sup 34] years, with[bar[nu]]K[sup+] being the dominant decay mode, and quite possibly[mu][sup+]K[sup 0] and e[sup+][pi][sup 0] being prominent. This in turn strongly suggests that an improvement in the current sensitivity by a factor of five to ten (compared to SuperK) ought to reveal proton decay. Otherwise some promising and remarkably successful ideas on unification would suffer a major setback. For comparison, some alternatives to the conventional approach to unification pursued here are mentioned at the end.
Download or read book Neutrinos and Implications for Physics Beyond the Standard Model written by Robert Schrock and published by World Scientific. This book was released on 2003 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: This important book presents the proceedings of the conference ?Neutrinos and Implications for Physics Beyond the Standard Model?, put on by the Yang Institute for Theoretical Physics, State University of New York at Stony Brook.The observation of neutrino masses and lepton mixing constitutes the first confirmed evidence for physics beyond the Standard Model. This evidence includes the measured deficiency of charged current reactions induced by solar neutrinos and the anomalous zenith angle distribution of atmospheric neutrinos. A profound question now facing theorists is: What do these observations imply for new physics? At the conference, members of the major experiments gave an update on current experimental evidence from solar and atmospheric neutrino data for neutrino oscillations, and status reports from KamLAND and MiniBooNE. Leading theorists also reported on neutrinoless double beta decay, high energy neutrino scattering and precision electroweak data, theoretical models for neutrino masses and lepton mixing, and constraints from neutrino data, etc. Since neutrino physics is at present one of the most exciting areas of particle physics, this volume should be of interest to a wide variety of students and researchers in physics.
Download or read book From Quarks And Gluons To Quantum Gravity Proceedings Of The International School Of Subnuclear Physics written by Antonino Zichichi and published by World Scientific. This book was released on 2003-12-15 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: In August/September 2002, a group of 78 physicists from 50 laboratories in 17 countries met in Erice, Italy, to participate in the 40th Course of the International School of Subnuclear Physics. The purpose of the School was to focus attention on the theoretical and phenomenological developments in gauge theories, as well as in all the other sectors of subnuclear physics. Experimental highights from the most relevant sources of new data were presented and discussed, including the latest news on theoretical developments in quantizing the gravitational forces.This volume constitutes the proceedings of the School. It is dedicated to the memory of Victor Frederick Weisskopf, a founder — together with John Stewart Bell, Patrick Maynard Stuart Blackett and Isidor Isaac Rabi — of the “Ettore Majorana” Centre for Scientific Culture, this School being the first of its 114 Schools now in existence.
Download or read book Workshop on Grand Unification written by and published by . This book was released on 1988 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Universe in a Helium Droplet written by G. E. Volovik and published by Oxford University Press on Demand. This book was released on 2003-03-06 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text presents a general overview of analogies between phenomena in condensed matter physics and quantum field theory and elementary particle physics.
Download or read book Grand Unification With And Without Supersymmetry And Cosmology Implications written by Antonio Masiero and published by World Scientific Publishing Co Inc. This book was released on 1985-02-28 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the present status of art of grand unification with and without supersymmetry (gravity), including cosmological consequences. It is addressed to graduate students and researchers interested in this fastly developing field. But without necessarily any previous experience, however, at least some parts of the book and, in particular, those concerning the most recent developments, are of interest to actively involved researchers in the field.
Download or read book Gauge Theories Massive Neutrinos and Proton Decay written by and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: The following proceedings contains most of the contributions given at Orbis Scientiae 1981. As has become customary during the past few years, the organizers and moderators have attempted to strike a balance between reviews of the status of experimental and theoretical developments during the preceding year. We are very pleased that experimentalists representing the critical developments in new accelerator plans, neutrino oscillations, proton decay, and decay schemes of the upsilon, have seen fit to enlighten at first hand their theoretical colleagues. We believe that this interaction can be of great benefit to both groups. The reports of theorists on many of the key theoretical advances by the practitioners themselves is a particularly satisfying feature of this series of conferences and is a tribute to the care and wisdom of the session moderators. Although it has not been a customary editorial practice, we feel that it is particularly appropriate to point out that the 1981 recipient of the J. Robert Oppenheimer Memorial Prize was Professor Frederick Reines, of University of California, Irvine, for his pioneering experiments which first experimentally estab lished the existence of the neutrino. The flurry of activit- experimental and theoretical - generated by recent evidence for massive neutrinos is amply reflected in the contents of this volume. The enthusiasm and skill of Mrs. Helga S. Billings and Mrs. Susan L. Maxon in the organization and the running of the con ference, as well as in the preparation of these proceedings, is gratefully acknowledged.
Download or read book Neutrino Mass and Seesaw Mechanism written by K. Nakamura and published by . This book was released on 2004 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grand Unified Theories Current Status and Future Prospects written by Takeshi Fukuyama and published by AIP Conference Proceedings (Nu. This book was released on 2008-05-29 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are confronting unprecedented situations that astrophysical observation meets with high energy physics. The discoveries of dark matter and dark energy as well as neutrino masses indicate the theory beyond the Standard Model, which could be the Grand Unified Theory (GUT). In this proceeding, the GUT is intensively discussed from the various points of views.
Download or read book Memorial Volume On Abdus Salam s 90th Birthday written by Lars Brink and published by World Scientific. This book was released on 2017-03-21 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'This book presents a timely set of academic and intellectual views on Salam’s scientific passion, contribution and personality, and will be of great interest to academics in the fields of particle physics, high energy physics and scientific history of the developing world.'Contemporary PhysicsIn honor of one of the most prolific and exciting scientists of the second half of the last century, a memorial meeting was organized by the Institute of Advanced Studies at Nanyang Technological University for Professor Abdus Salam's 90th Birthday in January 2016.Salam believed that 'scientific thought is the common heritage of all mankind' and that the developing world should play its part, not merely by importing technology but by being the arbiter of its own scientific destiny. That belief saw him rise from humble beginnings in a village in Pakistan to become one of the world's most original and influential particle physicists, culminating in the 1979 Nobel Prize (shared with Glashow and Weinberg) for contributions to electroweak unification, which forms an integral part of the Standard Model.The book collected the papers presented at this memorable event which saw many distinguished scientists participating as speakers to reflect on Prof Salam's great passion for the science and achievements.
Download or read book Sixty Years of Double Beta Decay written by Hans Volker Klapdor-Kleingrothaus and published by World Scientific. This book was released on 2001 with total page 1313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nuclear double beta decay is - together with proton decay - one of the most promising tools for probing beyond-the-standard-model physics on beyond-accelerator energy scales. It is already probing the TeV scale, on which new physics should manifest itself according to theoretical expectations. Only in the early 1980s was it known that double beta decay yields information on the Majorana mass of the exchanged neutrino. At present, the sharpest bound for the electron neutrino arises from this process. It is only in the last 10 years that the much more far-reaching potential of double beta decay has been discovered. Today, the potential of double beta decay includes a broad range of topics that are equally relevant to particle physics & astrophysics, such as masses of heavy neutrinos, the sneutrino, SUSY models, compositeness, leptoquarks & right-handed W bosons. This invaluable book outlines the development of double beta research from its beginnings until its most recent achievements, & also presents the outlook for its highly exciting future. Readership: Particle physicists, nuclear physicists & astrophysicists.
Download or read book Origen y antig edad de algunas ciudades y villas de Espa a h 7 17v Linajes de apellidos de Espa a h 33 115v written by and published by . This book was released on 1601 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gauge Theories Massive Neutrinos and Proton Decay written by Behram N. Kursunoglu and published by . This book was released on 2014-09-01 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book FERMION MASSES AND NEUTRINO OSCILLATIONS IN SO 10 X SU 2 F written by K. T. MAHANTHAPPA and published by . This book was released on 2004 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present in this talk a model based on SO(10) x SU(2){sub F} having symmetric mass textures with 5 zeros constructed by us recently. The symmetric mass textures arising from the left-right symmetry breaking chain of SO(10) give rise to good predictions for the masses, mixing angles and CP violation measures in the quark and lepton sectors (including the neutrinos), all in agreement with the most up-to-date experimental data within 1 {sigma}. Various lepton flavor violating decays in our model are also investigated. Unlike in models with lop-sided textures, our prediction for the decay rate of {mu} + e{gamma} is much suppressed and yet it is large enough to be probed by the next generation of experiments. The observed baryonic asymmetry in the Universe can be accommodated in our model utilizing soft leptogenesis.
Download or read book Neutrino Mass written by Guido Altarelli and published by Springer. This book was released on 2004-02-24 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reviews the current state of knowledge of neutrino masses and the related question of neutrino oscillations. After an overview of the theory of neutrino masses and mixings, detailed accounts are given of the laboratory limits on neutrino masses, astrophysical and cosmological constraints on those masses, experimental results on neutrino oscillations, the theoretical interpretation of those results, and theoretical models of neutrino masses and mixings. The book concludes with an examination of the potential of long-baseline experiments. This is an essential reference text for workers in elementary-particle physics, nuclear physics, and astrophysics.
Download or read book Vacuum Decay Symmetry Breaking and Fermion Masses in Grand Unified Theories written by Philippe Jetzer (Physiker, Schweiz) and published by . This book was released on 1985 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cosmic Rays at Earth written by P.K.F. Grieder and published by Elsevier. This book was released on 2001-07-27 with total page 1117 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1912 Victor Franz Hess made the revolutionary discovery that ionizing radiation is incident upon the Earth from outer space. He showed with ground-based and balloon-borne detectors that the intensity of the radiation did not change significantly between day and night. Consequently, the sun could not be regarded as the sources of this radiation and the question of its origin remained unanswered. Today, almost one hundred years later the question of the origin of the cosmic radiation still remains a mystery.Hess' discovery has given an enormous impetus to large areas of science, in particular to physics, and has played a major role in the formation of our current understanding of universal evolution. For example, the development of new fields of research such as elementary particle physics, modern astrophysics and cosmology are direct consequences of this discovery. Over the years the field of cosmic ray research has evolved in various directions: Firstly, the field of particle physics that was initiated by the discovery of many so-called elementary particles in the cosmic radiation. There is a strong trend from the accelerator physics community to reenter the field of cosmic ray physics, now under the name of astroparticle physics. Secondly, an important branch of cosmic ray physics that has rapidly evolved in conjunction with space exploration concerns the low energy portion of the cosmic ray spectrum. Thirdly, the branch of research that is concerned with the origin, acceleration and propagation of the cosmic radiation represents a great challenge for astrophysics, astronomy and cosmology. Presently very popular fields of research have rapidly evolved, such as high-energy gamma ray and neutrino astronomy. In addition, high-energy neutrino astronomy may soon initiate as a likely spin-off neutrino tomography of the Earth and thus open a unique new branch of geophysical research of the interior of the Earth. Finally, of considerable interest are the biological and medical aspects of the cosmic radiation because of it ionizing character and the inevitable irradiation to which we are exposed. This book is a reference manual for researchers and students of cosmic ray physics and associated fields and phenomena. It is not intended to be a tutorial. However, the book contains an adequate amount of background materials that its content should be useful to a broad community of scientists and professionals. The present book contains chiefly a data collection in compact form that covers the cosmic radiation in the vicinity of the Earth, in the Earth's atmosphere, at sea level and underground. Included are predominantly experimental but also theoretical data. In addition the book contains related data, definitions and important relations. The aim of this book is to offer the reader in a single volume a readily available comprehensive set of data that will save him the need of frequent time consuming literature searches.
