دانلود کتاب آنسوی مدل استانداردی فیزیک ذرات

The Standard Model (SM) of particle physics stands as one of the most successful scientific theories of the 20th century. It has passed numerous experimental tests with extraordinary precision and has accurately described the electromagnetic, weak, and strong interactions among elementary particles. The discovery of the Higgs boson at the Large Hadron Collider (LHC) in 2012 marked the crowning achievement of the SM, confirming its mechanism of mass generation. Yet, despite these triumphs, the SM leaves many fundamental questions unanswered. Why do neutrinos have mass? What is the nature of dark matter? How can we resolve the hierarchy problem? What explains the baryon asymmetry of the universe? Is there a deeper symmetry behind the SM gauge structure? These puzzles, and many others, provide strong motivation for the search for physics beyond the SM (BSM). This book offers a comprehensive introduction to BSM physics, aimed at advanced undergraduate students, graduate students, and researchers with an interest in high-energy theory and phenomenology. The topics covered span a wide range of well-motivated extensions of the SM, including: Two Higgs Doublet Models (2HDMs), which provide a richer scalar sector and natural explanations for dark matter and baryogenesis; Gauged U(1)B−L models, which accommodate neutrino masses and right-handed neutrinos in a theoretically consistent manner; Left-Right Symmetric Models (LRSMs), offering a compelling framework for restoring parity symmetry and generating neutrino masses through seesaw mechanisms; Grand Unified Theories (GUTs), such as SU(5), which seek a unified description of the SM forces; Supersymmetry (SUSY), a symmetry that links fermions and bosons and addresses the hierarchy problem; Theories with extra spatial dimensions, which aim to resolve outstanding theoretical puzzles and may connect particle physics with quantum gravity. Special emphasis is placed on the phenomenological implications of these models. Chapters examine how BSM physics manifests in collider signatures, flavor observables, neutrino experiments, and cosmological measurements. Particular attention is given to the testability of these models at current and future experiments, including the LHC and proposed nextgeneration colliders. The interplay between particle physics and cosmology, especially in addressing the nature of dark matter, dark energy, and the matter-antimatter asymmetry, remains a central focus in contemporary particle physics. The structure of the book reflects a logical progression: from foundational motivations for BSM physics, to detailed presentations of theoretical frameworks, to their testable predictions. Throughout, both theoretical consistency and experimental viability are prioritized. This book is the result of years of engagement with the open questions at the frontier of fundamental physics. It is intended as both a learning tool and a reference for those aiming to deepen their understanding or contribute to the development of particle physics BSM. Whether used in a classroom setting, during independent study, or as a guide to research, we hope this volume provides readers with both conceptual clarity and inspiration for further exploration of the fundamental laws of nature.