This book presents a comprehensive exploration of unresolved mysteries in particle physics, delving into cutting-edge research aimed at unraveling the enigmatic facets of the Standard Model (SM). It tackles fundamental questions surrounding neutrino masses, flavor physics, and the strong CP problem, shedding light on the universe's underlying structure. The insightful analysis takes readers on a journey that begins with probing the mechanisms behind neutrino mass generation, including the existence of heavy neutral leptons and their implications for collider experiments. The book then navigates the intricate landscape of flavor physics, elucidating rare B-meson decays and their role as a window to new physics beyond the SM. Additionally, it investigates axions as potential hot dark matter candidates, offering valuable insights into their interactions with pions and cosmological implications. This work not only addresses current theoretical puzzles but also paves the way for future advancements in particle physics. Aimed at researchers, graduate students, and professionals in the field, this book serves as an indispensable resource for those seeking to delve deeper into the forefront of particle physics research.
Introduction.- The Standard Model.- Known knowns.- Known
unknowns.- Neutrino Masses.- Flavor structure.- Strong CP puzzle.- The quest
for heavy neutral leptons.- Motivations to go beyond simplified
scenarios.- Collider searches of HNL.- Current Status.- Beyond the single
mixing assumption.- A specific example: dimuon channel.-
Beyond the single HNL assumption.- Summary.- Confronting open issues in
Flavor Physics.- BK() Decays in the SM.- Effective theory description.
Gioacchino Piazza is a theoretical physicist specializing in particle physics, with a focus on axions, neutrinos, and flavor physics. He completed his Ph.D. as a Marie Curie Fellow at IJCLab, CNRS/IN2P3, and Université Paris-Saclay, followed by a postdoctoral position at the University of Zurich. He received his Master of Science in Theoretical Physics from the University of Rome La Sapienza, where he also earned his Bachelor's degree in Physics. Dr. Piazza has received prestigious awards such as the "Orso Mario Corbino" Prize and the "Tito Maiani" Prize for his relevant works on axion cosmology. He has published extensively in peer-reviewed journals and has presented his research at numerous international conferences and seminars.
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