Laboratory for High Energy Physics

The Laboratory for High Energy Physics (LHEP) is a division of the Physics Institute at the University of Bern, Switzerland.
We conduct research in the field of experimental particle physics. The five main subjects are:

The LHEP has also been involved in experiments on low energy QCD studies, search for dark-matter, strange-matter, quark-gluon plasma, etc.

High-energy collider physics

The Bern group is a member of the CERN ATLAS experiment at the Large Hadron Collider (LHC).
ATLAS is a general-purpose particle physics experiment at CERN in Geneva, to exploit the full discovery potential of the Large Hadron Collider (LHC) accelerator, able to provide the world record center- of-mass energy of 14 TeV for proton-proton collisions... more

Neutrino oscillation physics

LHEP is involved in the OPERA neutrino oscillation experiment at the underground Gran Sasso laboratory.
Several key experiments conducted in the last decade with solar, atmospheric, reactor and accelerator neutrinos have contributed to build-up our present understanding of neutrino mixing. A wide program is currently being executed under the pressure of a very active international community... more

Low energy neutrino physics

LHEP is an active member of the EXO collaboration, a multi-phase experiment looking for neutrinoless double beta decay in the 136Xe isotope.
The two neutrino double beta decay is a rare nuclear process allowed in even-even isotopes where two neutrons are simultaneously converted to protons resulting in the emission of two electrons and two neutrinos. This process is very similar to the ordinary beta decay but much less frequent... more

Development of cryogenic liquefied noble gas TPCs

The next generation of neutrino oscillation physics experiments calls for new detectors able to meet the challenge of the high intensity of the beam facilities (Super-beams, Beta-beams, Neutrino Factories) and also capable of improved particle identification and background rejection performance. Naturally the application of these facilities will be extended to other fields, such as astroparticle physics and matter instability searches. The detection technique of the liquid Argon Time Projection Chambers (LAr TPC) is well suited to answer the demanding experimental requirements originating from the above considerations. The Bern group has been and is presently very active in proposing a global research strategy centered on both the design and proposal of experiments exploiting this technique and on the related R&D strategy... more

Development of novel detectors for particles and radiation

Members of the Bern group have large experience in the field of particle detectors. This includes knowledge on tracking devices, on calorimetry, on cryogenic detectors, on high-resolution emulsion films, on imaging detectors, etc. Synergy of different known detector technologies leads to the development of novel detectors with improved and often unprecedented characteristics. This motivates our interest in continuing along this line of research aiming at proposing, designing, realizing and operating powerful tools for future particle physics experiments... more

Medical applications of particle physics

Particle accelerators and detectors can be considered today as fundamental tools in many fields of modern medicine. In particular, the production of isotopes for PET (Positron Emission Tomography) and the high precision irradiation of deep seated tumors with proton beams (proton-therapy) represent two of the most modern hi-tech developments in the fight against cancer... more


First Bern Cyclotron Symposium (June 6 & 7, 2011).