تقرير
O(a) improvement of the HYP static axial and vector currents at one-loop order of perturbation theory
| العنوان: | O(a) improvement of the HYP static axial and vector currents at one-loop order of perturbation theory |
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| المؤلفون: | Grimbach, A., Guazzini, D., Knechtli, F., Palombi, F. |
| المصدر: | JHEP0803:039,2008 |
| سنة النشر: | 2008 |
| المجموعة: | High Energy Physics - Lattice |
| مصطلحات موضوعية: | High Energy Physics - Lattice |
| الوصف: | We calculate analytically the improvement coefficients of the static axial and vector currents in O(a) improved lattice QCD at one-loop order of perturbation theory. The static quark is described by the hypercubic action, previously introduced in the literature in order to improve the signal-to-noise ratio of static observables. Within a Schroedinger Functional setup, we derive the Feynman rules of the hypercubic link in time-momentum representation. The improvement coefficients are obtained from on-shell correlators of the static axial and vector currents. As a by-product, we localise the minimum of the static self-energy as a function of the smearing parameters of the action at one-loop order and show that the perturbative minimum is close to its non-perturbative counterpart. Comment: 24 pages, 7 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1088/1126-6708/2008/03/039 |
| URL الوصول: | http://arxiv.org/abs/0802.0862 |
| رقم الأكسشن: | edsarx.0802.0862 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1088/1126-6708/2008/03/039 |
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