Report
Nucleon structure from stochastic estimators
| العنوان: | Nucleon structure from stochastic estimators |
|---|---|
| المؤلفون: | Bali, Gunnar S., Collins, Sara, Gläßle, Benjamin, Göckeler, Meinulf, Najjar, Johannes, Rödl, Rudolf, Schäfer, Andreas, Sternbeck, André, Söldner, Wolfgang |
| سنة النشر: | 2013 |
| المجموعة: | High Energy Physics - Lattice |
| مصطلحات موضوعية: | High Energy Physics - Lattice |
| الوصف: | Using stochastic estimators for connected meson and baryon three-point functions has successfully been tried in the past years. Compared to the standard sequential source method we trade the freedom to compute the current-to-sink propagator independently of the hadron sink for additional stochastic noise in our observables. In the case of the nucleon we can use this freedom to compute many different sink-momentum/polarization combinations, which grants access to more virtualities. We will present preliminary results on the scalar, electro-magnetic and axial form factors of the nucleon in $N_f=2+1$ lattice QCD and contrast the performance of the stochastic method to the sequential source method. We find the stochastic method to be competitive in terms of errors at fixed cost. Comment: presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/1311.1718 |
| رقم الانضمام: | edsarx.1311.1718 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |