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Disconnected diagrams with twisted-mass fermions

Abdel-Rehim, A
; 
Alexandrou, C
; 
Constantinou, M
; 
Finkenrath, J
; 
Hadjiyiannakou, K
; 
Jansen, K
; 
Kallidonis, C
; 
Koutsou, G
; 
Avilés-Casco, AV
; 
Volmer, J
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Conference Proceeding
Date
2016-01-01
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hep-lat
 hep-lat
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http://hdl.handle.net/20.500.12613/5753
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1611.03802v1.pdf
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© Copyright owned by the author(s). 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.
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Proceedings of Science
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