文章基本信息

标题：Disconnected diagrams with twisted-mass fermions
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作者：A.Abdel-Rehim ; C.Alexandrou ; M.Constantinou 等
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2016
卷号：256
DOI：10.22323/1.256.0155
语种：English
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：The latest results from the Twisted-Mass collaboration on disconnected diagrams at the physical value of the pion mass are presented. In particular, we focus on the sigma terms, the axial charges and the momentum fraction, all of them for the nucleon. A detailed error analysis for each observable follows, showing the strengths and weaknesses of the one-end trick. Alternatives are discussed.