Three-Photon-Annihilation Contributions to Positronium Energies at Ordermα7

Possibility of observable signatures of leptonium from astrophysical sources

(2015) S. C. Ellis et al.   PHYSICAL REVIEW D

Hard three-loop corrections to hyperfine splitting in positronium and muonium

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Electroweak corrections to the true muonium hyperfine splitting

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Positronium energy levels at order mα 7 : Vacuum polarization corrections in the two-photon-annihilation channel

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First millimeter-wave spectroscopy of ground-state positronium

(2015) A. Miyazaki et al.   Progress of Theoretical and Experimental Physics

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(2014) Gregory S. Adkins et al.   PHYSICAL REVIEW A

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(2014) Gregory S. Adkins et al.   PHYSICAL REVIEW A

Hard nonlogarithmic corrections of ordermα7to hyperfine splitting in positronium

(2014) Michael I. Eides et al.   PHYSICAL REVIEW D

Hyperfine Splitting in Positronium toO(α7me): One Photon Annihilation Contribution

(2014) M. Baker et al.   PHYSICAL REVIEW LETTERS

New precision measurement of hyperfine splitting of positronium

(2014) A. Ishida et al.   PHYSICS LETTERS B

Production and discovery of true muonium in fixed-target experiments

(2012) Andrzej Banburski et al.   PHYSICAL REVIEW D

Direct Observation of the Hyperfine Transition of Ground-State Positronium

(2012) T. Yamazaki et al.   PHYSICAL REVIEW LETTERS

Positronium Hyperfine Interval Measured via Saturated Absorption Spectroscopy

(2012) D. B. Cassidy et al.   PHYSICAL REVIEW LETTERS

Precise measurement of positronium

(2012) Toshio Namba   Progress of Theoretical and Experimental Physics

Advances towards a new measurement of the 1S–2S transition of positroniumThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at École de Physique, les Houches, France, 30 May – 4 June, 2010.

(2011) P. Crivelli et al.   CANADIAN JOURNAL OF PHYSICS

Measurement of positronium hyperfine splitting with quantum oscillation

(2011) Y. Sasaki et al.   PHYSICS LETTERS B

Production of the Smallest QED Atom: True Muonium (μ+μ−)

(2009) Stanley J. Brodsky et al.   PHYSICAL REVIEW LETTERS

O(mα6)corrections to energy levels of positronium with nonvanishing orbital angular momentum

(2008) Jacek Zatorski   PHYSICAL REVIEW A

First test of O(α2) correction of the orthopositronium decay rate

(2008) Y. Kataoka et al.   PHYSICS LETTERS B