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تسجيل مستخدم جديدDisconnected diagrams with twisted-mass fermions
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نشر من قبل
Alejandro Marino Vaquero Avil\\'es-Casco
تاريخ النشر
2016
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English
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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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اقرأ أيضاً
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erequisite to obtain precise determinations of PDFs from the lattice with realistic estimates of all uncertainties. In these proceedings, we shortly discuss systematic effects in the matching procedure. Moreover, we present preliminary results from our new simulations at the physical point. They involve, additionally, the dynamical strange and charm quarks, as well as a larger volume and a smaller lattice spacing than in our previous computations. In addition, we show first results from computations of generalized parton distributions (GPDs) in the quasi-distribution framework.
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improved gauge action. In addition, first results for N_f=2+1+1 flavours of twisted mass fermions are discussed.
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