Contact
Name
Jan Hajer

Position
Former member
Member from October 2017 to January 2021

Personal homepage
https://jan.hajer.com
Projects
Research directions:
Cosmology and General Relativity
Phenomenology of elementary particles
Theories of the fundamental interactions

Active projects
Neutrino Masses as a Key to New Physics
Marco Drewes, Michele Lucente

We study the perspectives to probe the origin of neutrino mass with existing or near future experiments. The focus lies on low scale seesaw scenarios involving heavy right handed neutrinos. We are also interested in cosmological implications, such as leptogenesis or connections to Dark Matter.
Scalar Fields in the Early Universe
Mubarak Abdallah, Marco Drewes

We study the nonequilibrium dynamics of scalar fields in the early universe in the framework of the Schwinger-Keldysh formalism. We are interested in several applications, including inflation, reheating, Dark Matter production and the fate of the Higgs field in the early universe.

Non-active projects
Publications in IRMP
All my publications on Inspire

Number of publications as IRMP member: 16
Last 5 publications

2022

IRMP-CP3-22-51: Exploiting exotic LHC datasets for long-lived new particle searches
El Faham, Hesham and Giammanco, Andrea and Hajer, Jan

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. November 3.
CP3-22-17: Opportunities for new physics searches with heavy ions at colliders
d'Enterria, David and others

[Abstract] [PDF] [Journal]
Snowmass White Paper.
J. Phys. G: Nucl. Part. Phys. 50 (2023) 050501
DOI 10.1088/1361-6471/acc197
Refereed paper. March 14.

2021

CP3-21-48: Oscillating scalar dissipating in a medium
Ai, Wen-Yuan and Drewes, Marco and Glavan, Dra\v{z}en and Hajer, Jan

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. July 24.
CP3-21-16: Unleashing the full power of LHCb to probe Stealth New Physics
Borsato, M. and others

[Abstract] [PDF]
82 pages, 31 figures
Contribution to proceedings. June 3.
CP3-21-13: Portal Effective Theories: A framework for the model independent description of light hidden sector interactions
Arina, Chiara and Hajer, Jan and Klose, Philipp

[Abstract] [PDF] [Journal] [Dial]
Refereed paper. May 17.

More publications