Positronium as a probe for new physics beyond the standard model

@article{Rubbia2004PositroniumAA,
  title={Positronium as a probe for new physics beyond the standard model},
  author={Andr{\'e} Rubbia},
  journal={arXiv: High Energy Physics - Phenomenology},
  year={2004}
}
  • A. Rubbia
  • Published 13 February 2004
  • Physics
  • arXiv: High Energy Physics - Phenomenology
We discuss and summarize some aspects concerning the study of the positronium system to probe new physics beyond the Standard Model. 
Some aspects of positronium physics
Some aspects of both theoretical and experimental study of the positronium system to probe physics beyond the Standard Model are reviewed. In particular, new experiments to search for the invisible
Positronium energy levels at order $m \alpha^7$: vacuum polarization corrections in the two-photon-annihilation channel
We have calculated all contributions to the energy levels of parapositronium at order $m \alpha^7$ coming from vacuum polarization corrections to processes involving virtual annihilation to two
Anomalous magnetic moment of the positronium ion
We determine the gyromagnetic factor of the positronium ion, a three-body system consisting of two electrons and a positron, including first relativistic corrections. We find that the g-factor is
ARTIFICIALLY INDUCED POSITRONIUM OSCILLATIONS IN A TWO-SHEETED SPACE–TIME: CONSEQUENCES ON THE OBSERVED DECAY PROCESSES
Following recent theoretical results, it is suggested that positronium (Ps) might undergo spontaneous oscillations between two 4D space–time sheets whenever subjected to constant irrotational
Design of gyrotron FU CW V for accurate measurement of positronium energy level
Accurate measurement of difference between energy levels of positronium is a current important subject in the experimental physics of elementary particles. The frequency corresponding to the energy
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It has been recently suggested that the vacuum magnetic dichroism observed by the PVLAS experiment could be explained by the pair production of a new light, m ~0.1 eV, millicharged, q ~ 3 10^{-6} e,
Consequences of gravity-induced couplings in theories with many particle species
In theories with many copies of the Standard Model virtual black hole exchange may produce effective higher-dimensional operators that can be treated below the cutoff scale as fundamental vertices of
An experimental investigation of light emission produced in the process of positronium formation in matter.
TLDR
It seems that the Ps formation on the alkane surface is not accompanied by the emission of photons with energy in the detection range of 1.6-3.8 eV, and equations were developed to estimate the expected ratio of light emission events to annihilation events with the presence or absence of a photon during thePs formation.
Detection of light emission produced in the process of positronium formation.
The excess energy emitted during the positronium (Ps) formation in condensed matter may be released as light. Spectroscopic analysis of this light can be a new method of studying the electronic
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