Precise measurement on HFS of positronium

A. Ishida; G. Akimoto; K. Kato; T. Suehara; T. Namba; S. Asai; T. Kobayashi; H. Saito; M. Yoshida; K. Tanaka; A. Yamamoto; I. Ogawa; S. Kobayashi; T. Idehara

doi:10.1088/1742-6596/194/15/152021

Precise measurement on HFS of positronium

A. Ishida
, G. Akimoto
, K. Kato
, T. Suehara
, T. Namba
, S. Asai
, T. Kobayashi
, H. Saito
, M. Yoshida
, K. Tanaka
, A. Yamamoto
, I. Ogawa
, S. Kobayashi
, T. Idehara

Research output: Contribution to journal › Conference article › peer-review

Abstract

Positronium is an ideal system for the research of the QED. The hyperfine splitting of positronium is sensitive to the higher order correction of the QED and to the new physics beyond the Standard Model via a vacuum oscillation. The new method of QED calculations has revealed the 3.5σ discrepancy between the QED prediction and the previous measurements. It might be because of the new physics or the experimental systematic uncertainties (the effect of unthermalized Ps and the nonuniformity of the magnetic fields). We present the results of the first run and the future plan of our new precise measurement on HFS without these uncertainties.

Original language	English
Article number	152021
Journal	Journal of Physics: Conference Series
Volume	194
Issue number	15
DOIs	https://doi.org/10.1088/1742-6596/194/15/152021
Publication status	Published - Dec 24 2009
Externally published	Yes
Event	26th International Conference on Photonic, Electronic and Atomic Collisions - Kalamazoo, United States Duration: Jul 22 2009 → Jul 28 2009

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1088/1742-6596/194/15/152021

Cite this

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title = "Precise measurement on HFS of positronium",

abstract = "Positronium is an ideal system for the research of the QED. The hyperfine splitting of positronium is sensitive to the higher order correction of the QED and to the new physics beyond the Standard Model via a vacuum oscillation. The new method of QED calculations has revealed the 3.5σ discrepancy between the QED prediction and the previous measurements. It might be because of the new physics or the experimental systematic uncertainties (the effect of unthermalized Ps and the nonuniformity of the magnetic fields). We present the results of the first run and the future plan of our new precise measurement on HFS without these uncertainties.",

author = "A. Ishida and G. Akimoto and K. Kato and T. Suehara and T. Namba and S. Asai and T. Kobayashi and H. Saito and M. Yoshida and K. Tanaka and A. Yamamoto and I. Ogawa and S. Kobayashi and T. Idehara",

note = "Publisher Copyright: {\textcopyright} 2009 IOP Publishing Ltd.; 26th International Conference on Photonic, Electronic and Atomic Collisions ; Conference date: 22-07-2009 Through 28-07-2009",

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doi = "10.1088/1742-6596/194/15/152021",

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TY - JOUR

T1 - Precise measurement on HFS of positronium

AU - Ishida, A.

AU - Akimoto, G.

AU - Kato, K.

AU - Suehara, T.

AU - Namba, T.

AU - Asai, S.

AU - Kobayashi, T.

AU - Saito, H.

AU - Yoshida, M.

AU - Tanaka, K.

AU - Yamamoto, A.

AU - Ogawa, I.

AU - Kobayashi, S.

AU - Idehara, T.

PY - 2009/12/24

Y1 - 2009/12/24

N2 - Positronium is an ideal system for the research of the QED. The hyperfine splitting of positronium is sensitive to the higher order correction of the QED and to the new physics beyond the Standard Model via a vacuum oscillation. The new method of QED calculations has revealed the 3.5σ discrepancy between the QED prediction and the previous measurements. It might be because of the new physics or the experimental systematic uncertainties (the effect of unthermalized Ps and the nonuniformity of the magnetic fields). We present the results of the first run and the future plan of our new precise measurement on HFS without these uncertainties.

AB - Positronium is an ideal system for the research of the QED. The hyperfine splitting of positronium is sensitive to the higher order correction of the QED and to the new physics beyond the Standard Model via a vacuum oscillation. The new method of QED calculations has revealed the 3.5σ discrepancy between the QED prediction and the previous measurements. It might be because of the new physics or the experimental systematic uncertainties (the effect of unthermalized Ps and the nonuniformity of the magnetic fields). We present the results of the first run and the future plan of our new precise measurement on HFS without these uncertainties.

UR - https://www.scopus.com/pages/publications/85034961054

UR - https://www.scopus.com/pages/publications/85034961054#tab=citedBy

U2 - 10.1088/1742-6596/194/15/152021

DO - 10.1088/1742-6596/194/15/152021

M3 - Conference article

AN - SCOPUS:85034961054

SN - 1742-6588

VL - 194

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 15

M1 - 152021

T2 - 26th International Conference on Photonic, Electronic and Atomic Collisions

Y2 - 22 July 2009 through 28 July 2009

ER -

Precise measurement on HFS of positronium

Abstract

All Science Journal Classification (ASJC) codes

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