Refine
Document Type
- Preprint (62)
- Article (38)
- Working Paper (1)
Language
- English (101)
Has Fulltext
- yes (101)
Is part of the Bibliography
- no (101)
Keywords
- Hadron-Hadron Scattering (3)
- Charm physics (2)
- Heavy Ions (2)
- ALICE experiment (1)
- Beauty production (1)
- Heavy ions (1)
- Heavy-flavour production (1)
- Heavy-ion collision (1)
- INS (1)
- LHC (1)
- QCD (1)
- Quark gluon plasma (1)
- Relativistic heavy ion physics (1)
- Single electrons (1)
- connection to nature (1)
- environmental education (1)
- interest in animals (1)
- pp collisions (1)
- zoo education (1)
Institute
- Physik (98)
- Frankfurt Institute for Advanced Studies (FIAS) (88)
- Informatik (88)
- Biochemie, Chemie und Pharmazie (1)
- Biowissenschaften (1)
- Center for Financial Studies (CFS) (1)
- House of Finance (HoF) (1)
- Medizin (1)
- Sustainable Architecture for Finance in Europe (SAFE) (1)
- Wirtschaftswissenschaften (1)
The measurement of the mass differences for systems bound by the strong force has reached a very high precision with protons and anti-protons1,2. The extension of such measurement from (anti-)baryons to (anti-)nuclei allows one to probe any difference in the interactions between nucleons and anti-nucleons encoded in the (anti-)nuclei masses. This force is a remnant of the underlying strong interaction among quarks and gluons and can be described by effective theories3, but cannot yet be directly derived from quantum chromodynamics. Here we report a measurement of the difference between the ratios of the mass and charge of deuterons (d) and anti-deuterons (), and 3He and nuclei carried out with the ALICE (A Large Ion Collider Experiment)4 detector in Pb–Pb collisions at a centre-of-mass energy per nucleon pair of 2.76 TeV. Our direct measurement of the mass-over-charge differences confirms CPT invariance to an unprecedented precision in the sector of light nuclei5,6. This fundamental symmetry of nature, which exchanges particles with anti-particles, implies that all physics laws are the same under the simultaneous reversal of charge(s) (charge conjugation C), reflection of spatial coordinates (parity transformation P) and time inversion (T).