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A self-contained modern textbook on the role of neutrinos in astrophysics, cosmology, and high energy physics, bridging the gap between neutrino theory and supersymmetric model building, with a thorough discussion of varieties of seesaw mechanism, with or without supersymmetry.

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This self-contained modern textbook provides a modern description of the Standard Model and its main extensions from the perspective of neutrino physics. In particular it includes a thorough discussion of the varieties of seesaw mechanism, with or without supersymmetry. It also discusses schemes where neutrino mass arises from lighter messengers, which might lie within reach of the world´s largest particle accelerator, the Large Hadron Collider.
Throughout the text, the book stresses the role of neutrinos due to the fact that neutrino properties may serve as a guide to the correct model of unification, hence for a deeper understanding of high energy physics, and because neutrinos play an important role in astroparticle physics and cosmology. Each chapter includes summaries and set of problems, as well as further reading.

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Prof. J. W. F. Valle is the head of the AHEP group at the Institut de Fisica Corpuscular (IFIC/CSIC) at the University of Valencia, Spain. Having obtained is PhD degree at Syracuse University, USA, he spent time in Oxford, and Barcelona before joining IFIC at the University of Valencia. For over 30 years Professor José Valle has been active in neutrino physics & physics beyond the Standard Model of elementary particle interactions. He has authored almost 300 scientific publications, and has received several scientific awards, including the Humboldt Research Award. Prof. Jorge C. RomÆo is full Professor at the Physics Department of Instituto Superior Tecnico, the faculty of Engineering of the Lisbon Technical University, Portugal. Having obtained is PhD at the University of Chicago, USA, he spent time at the University of Geneva, Switzerland, before joining Instituto Superior Tecnico in Lisbon. At Instituto Superior Tecnico he has had many administrative duties, including chairman of the Department. Professor Jorge RomÆo has authored over 100 scientific publications with a significant impact in the field.

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