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Positronium hydride decay into proton, electron, and one or zero photons

M. Jamil Aslam

Wen Chen*, Andrzej Czarnecki, Muhammad Mubasher, and Connor Stephens

  • Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2E1 and Department of Physics, Quaid-i-Azam University, Islamabad, Pakistan

  • Department of Physics, University of Alberta, Edmonton, Alberta, Canada T6G 2E1

  • *Present address: School of Physics, Zhejiang University, Hangzhou, Zhejiang 310027, China.
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Phys. Rev. A 107, 062816 – Published 16 June, 2023

DOI: https://doi.org/10.1103/PhysRevA.107.062816

Abstract

Decay rates of the positronium hydride PsH, a bound state of a proton, a positron, and two electrons, are determined for two rare channels, PsH→p+e−γ and PsH→p+e−. Previous studies overestimated these rates by factors of about 2 and 700, respectively. We explain the physics underlying these wrong predictions. We confirm a range of static PsH properties, including the nonrelativistic ground-state energy, expectation values of interparticle distances and their powers, and the three- and four-particle coalescence probabilities, using a variational method in the Gaussian basis.

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Outline

Information

Phys. Rev. A 107, 062816– Published 16 June, 2023
  • Received 28 April 2023
  • Accepted 30 May 2023
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