تقرير
Renormalons in the energy-energy correlator
| العنوان: | Renormalons in the energy-energy correlator |
|---|---|
| المؤلفون: | Schindler, Stella T., Stewart, Iain W., Sun, Zhiquan |
| سنة النشر: | 2023 |
| المجموعة: | High Energy Physics - Phenomenology High Energy Physics - Theory Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Theory, Nuclear Theory |
| الوصف: | The energy-energy correlator (EEC) is an observable of wide interest for collider physics and Standard Model measurements, due to both its simple theoretical description in terms of the energy-momentum tensor and its novel features for experimental studies. Significant progress has been made in both applications and higher-order perturbative predictions for the EEC. Here, we analyze the nature of the asymptotic perturbative series for the EEC by determining its analytic form in Borel space under the bubble-sum approximation. This result provides information on the leading and subleading nonperturbative power corrections through renormalon poles. We improve the perturbative convergence of the $\overline{\mathrm{MS}}$ series for the EEC by removing its leading renormalon using an R scheme, which is independent of the bubble-sum approximation. Using the leading R-scheme power correction determined by fits to thrust, we find good agreement with EEC OPAL data already at ${\mathcal O}(\alpha_s^2)$. Comment: 19 pages + references, 6 figures; v2: update to fix a typo in the plotting routine for Figure 6 |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2305.19311 |
| رقم الأكسشن: | edsarx.2305.19311 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |