2018 European Nuclear Physics Conference

Session

Fundamental Symmetries

4 Sept 2018, 17:00

Conveners

Fundamental Symmetries: AULA 2 (Frist Floor)

• Michael Doser (CERN)

Fundamental Symmetries: AULA 7

• Michael Doser (CERN)

372. Nuclear structure solving problems of fundamental physics

Jouni Suhonen

04/09/2018, 17:00

The atomic nuclei serve as fento-scale laboratories for a plethora of processes relevant for fundamental physics of neutrinos and dark matter. In my talk I touch some recent hot topics in this wide and interesting field of applications of nuclear-structure methods.

88. Nuclear Structure with radioactive muonic atoms - The nuclear charge radius of radioactive isotopes by muonic X-rays measurements

Alexander Albert Skawran (Paul Scherrer Institut, Villigen, ETH Zürich, Switzerland)

04/09/2018, 17:30

Muonic atoms as laboratories for fundamental physics provide crucial input to QED, the weak and strong interaction. Muonic atom spectroscopy, i.e. the detection of the muonic X-rays emitted subsequently to the atomic capture of a negative muon, has been a very extensively used technique to determine the extent of the nuclear charge radii [1]. This method complements the knowledge from...

314. The FAMU experiment

Andrea Vacchi

04/09/2018, 17:50

By using the RAL-RIKEN intense pulsed muon beam and an on-purpose developed high-energy mid infrared tunable laser the FAMU experiment will measure the hyperfine splitting in the ground state of muonic hydrogen ΔEhfs(μ-p)1S with a precision δλ/λ < 10-5 providing crucial information on proton structure and muon-nucleon interaction. Specifically FAMU will provide rZ, the Zemach radius of the...

40. Searching for the two γ -decay of the X(17)

Ádám Nagy (Institute for Nuclear Research, Hungarian Academy of Sciences (MTA Atomki), Debrecen Hungary)

04/09/2018, 18:10

Serious efforts have been made to find particles related to dark matter. According to theoretical predictions, a (10 MeV-1 GeV) light particle is expected (hereinafter called X-boson), which mediates the interaction between dark particles. Krasznahorkay et. al. have succesfully investigated the X→e−e+ mode [1]. They excited the EX = 17.6 MeV and EX = 18.15 MeV states of 8Be and measured...

118. Fundamental studies by laser spectroscopy of antiprotonic helium atoms

Dr Masaki Hori (Max Planck Institute for Quantum Optics)

06/09/2018, 14:00

The ASACUSA collaboration at CERN's Antiproton Decelerator has precisely measured the atomic transition frequencies of antiprotonic helium by laser spectroscopy. These three-body exotic atoms are each composed of a normal helium nucleus, and electron, and an antiproton. They constitute baryon-antibaryon bound states with the longest known lifetime. The experiments involved cooling 2 billion...

94. Study of the isospin symmetry in N=Z nuclei

Dr Simone Ceruti (Università degli Studi di Milano INFN Milano)

06/09/2018, 14:20

In Nature, symmetries help us to describe a complex physical system in a simple way and to better understand its behaviour. The search for symmetries is a fundamental goal in all fields in physics. At the same time, the possible breaking of a symmetry can open the gates for new and unexpected scenarios. In a nuclear system the isospin symmetry plays a key role in nuclear structure and nuclear...

103. The AEGIS experiment at CERN: Probing antimatter gravity

Ruggero Caravita (GE)

06/09/2018, 14:40

The AEGIS experiment at CERN's Antiproton Decelerator is being set up to precisely measure the gravitational interaction between matter and antimatter. For this purpose, antihydrogen will be formed from cold antiprotons and positronium, the hydrogen-like bound state of an electron and a positron. Subsequently, the free-fall acceleration of a cold horizontal beam of antihydrogen will be...

135. Constraints for fundamental short-range forces from the neutron whispering gallery, and extention of this method to atoms and antiatoms (updated)

Prof. Valery Nesvizhevsky (Institut Laue-Langevin)

06/09/2018, 15:00

Extra fundamental short-range interactions mediated by new bosons are predicted in many extensions of the Standard Model of particle physics. They are also predicted in theories with large extra spatial dimensions and theories involving the light dark matter hypothesis. To search for such interactions at different characteristic distances, the experimentalists use many methods including...

127. Production method for precision experiments with protonium

Sebastian Gerber (Cern)

06/09/2018, 15:20

Antimatter experiments conducted at CERN address the fundamental question of baryon asymmetry through comparison measurements of fundamental properties of matter and antimatter, such as tests of CPT symmetry and the weak equivalent principle (WEP). The method of resonant-charge-exchange allows for the generation of H ̅ as well as for exotic antiprotonic systems such as p-p ̅ (Pn), μ-p ̅, d-p...