Rodejohann

Rodejohann
Name	Rodejohann
Occupation	Theoretical physicist
Known for	Neutrino physics, beyond-Standard-Model phenomenology, neutrinoless double beta decay

Rodejohann is a theoretical physicist known for contributions to neutrino physics, lepton number violation, and models beyond the Standard Model. He has worked on phenomenology connecting neutrino mass mechanisms with cosmology, collider signals, and rare-process experiments. His publications span neutrino oscillations, Majorana neutrinos, flavor symmetries, and experimental implications for neutrinoless double beta decay and leptogenesis.

Biography

Born in Germany, Rodejohann trained in theoretical physics with early connections to institutes and universities prominent in particle physics. He studied topics related to weak interactions at institutions associated with researchers from CERN, Fermilab, and DESY. His formative years brought him into collaboration networks that include faculty linked to the Max Planck Society, the Humboldt Foundation, and national laboratories such as SLAC and JINR. Mentors and collaborators include professors active in topics studied by groups at the University of Oxford, the University of Cambridge, and the Massachusetts Institute of Technology.

Academic career

Rodejohann held positions at European and international research centers, including roles at universities connected with collaborations at CERN and research programs with the European Research Council. He has taught graduate courses interacting with curricula at the University of Bonn, Technische Universität Munich, and the Ludwig Maximilian University of Munich. His appointments involved participation in collaborations with experimental teams at the Super-Kamiokande, SNO, and IceCube projects, and theoretical exchanges with groups working at the Institute for Advanced Study and the Kavli Institute for Theoretical Physics. He has served as reviewer and organizer for conferences such as Neutrino, ICHEP, and Moriond, and acted as thesis advisor for students later joining groups at SLAC, Fermilab, and KEK.

Research contributions

Rodejohann's research addresses neutrino mass generation mechanisms, including seesaw frameworks, radiative models, and sterile neutrino scenarios. He developed phenomenological analyses linking Majorana mass terms to signals in neutrinoless double beta decay experiments like GERDA, EXO, and KamLAND-Zen, and explored implications for experiments at JUNO, DUNE, and Hyper-Kamiokande. His work connects flavor symmetries—such as discrete groups studied in model building—with textures studied in the context of the Pontecorvo–Maki–Nakagawa–Sakata matrix and CP violation measured by collaborations at T2K and NOvA. Contributions include studies of leptogenesis tied to scenarios discussed in papers alongside authors involved with the Planck Collaboration and WMAP analyses of cosmological parameters.

He has also contributed to beyond-Standard-Model phenomenology involving left-right symmetric models, grand unified theories considered by CERN theorists, and portal interactions relevant to dark matter searches pursued by XENON, LUX-ZEPLIN, and DAMA collaborations. Rodejohann explored collider signatures relevant to the Large Hadron Collider and proposed tests for heavy neutral leptons related to experiments at the European Spallation Source and SHiP. His interdisciplinary approach ties particle physics to cosmology, interfacing with work by researchers associated with the South Pole Telescope, BICEP/Keck, and the Dark Energy Survey.

Selected publications

Rodejohann is author or co-author of numerous articles in leading journals and conference proceedings. Representative works include phenomenological studies on neutrinoless double beta decay presented alongside results from GERDA, EXO, and CUORE, analyses of neutrino mass ordering in light of data from NOvA, T2K, and Super-Kamiokande, and reviews synthesizing limits from Planck, WMAP, and BAO measurements. He has contributed chapters and review articles used by researchers at CERN, Fermilab, and SLAC, and his papers are cited in contexts involving the Particle Data Group, reviews at ICHEP, and lecture notes for schools organized by the Abdus Salam International Centre for Theoretical Physics.

Awards and honors

Rodejohann's recognitions include grants and fellowships from European Research Council programs, awards tied to national science foundations, and invitations to deliver plenary talks at meetings such as Neutrino and EPS-HEP. He has received distinctions from university research councils and has been part of award-winning collaborations acknowledged by institutions like the Max Planck Society and national academies. His advisory roles for funding agencies and editorial duties for journals in high-energy physics and astroparticle physics reflect standing among peers at institutions such as CERN, DESY, and the Perimeter Institute.

Personal life and legacy

Rodejohann maintains collaborations across Europe, North America, and Asia, fostering connections with groups at the University of Tokyo, Kyoto University, and the Chinese Academy of Sciences. His mentorship produced researchers who joined laboratories such as Fermilab, CERN, and KEK, and his pedagogical contributions influenced curricula at institutions including the University of Bonn and Ludwig Maximilian University. The legacy of his work persists in ongoing experimental programs at DUNE, Hyper-Kamiokande, JUNO, and neutrinoless double beta decay searches, and in theoretical frameworks used by researchers affiliated with the Kavli Institute, Perimeter Institute, and ICTP.

Category:Theoretical physicists