講演タイトル：	[EX] On determination of the fine-structure constant: Electron g-2 and Atomic interferometers
言語：	（英語/in English)
講演者：	仁尾　真紀子氏　( 理研 )
日時：	2020/12/9 (水)   15:30-16:30
場所：	オンライン (zoom)

 

(Abstract)

Any precision tests of the elementary particles are carried out on the assumption that the fine-structure constant alpha is sufficiently known.

Currently, there are two methods that provide equally accurate values of the alpha. One is the electron g-2 measurement together with its theoretical prediction from the QED theory. The other is the quotient of the Planck constant and the atomic mass (h/M) determined by using an atomic interferometer. I will report recent progress in both determination of the alpha including our own work on the five-loop QED calculation of the electron g-2.

開始日時	2020/12/09　15:30
終了日時	2020/12/09　16:30
講演者	仁尾　真紀子氏　( 理研 )
会場	オンライン (zoom)
連絡先	---
言語	English
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概要

Any precision tests of the elementary particles are carried out on the assumption that the fine-structure constant alpha is sufficiently known.

Currently, there are two methods that provide equally accurate values of the alpha. One is the electron g-2 measurement together with its theoretical prediction from the QED theory. The other is the quotient of the Planck constant and the atomic mass (h/M) determined by using an atomic interferometer. I will report recent progress in both determination of the alpha including our own work on the five-loop QED calculation of the electron g-2.