Report
Onset of scaling violation in pion and kaon elastic electromagnetic form factors
| العنوان: | Onset of scaling violation in pion and kaon elastic electromagnetic form factors |
|---|---|
| المؤلفون: | Yao, Zhao-Qian, Binosi, Daniele, Roberts, Craig D. |
| سنة النشر: | 2024 |
| المجموعة: | High Energy Physics - Experiment High Energy Physics - Lattice High Energy Physics - Phenomenology Nuclear Experiment Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Experiment, High Energy Physics - Lattice, Nuclear Experiment, Nuclear Theory |
| الوصف: | Using a symmetry-preserving truncation of the quantum field equations describing hadron properties, parameter-free predictions are delivered for pion and kaon elastic electromagnetic form factors, $F_{P=\pi,K}$, thereby unifying them with kindred results for nucleon elastic electromagnetic form factors. Regarding positive-charge states, the analysis stresses that the presence of scaling violations in QCD entails that $Q^2 F_P(Q^2)$ should exhibit a single maximum on $Q^2>0$. Locating such a maximum is both necessary and sufficient to establish the existence of scaling violations. The study predicts that, for charged $\pi$, $K$ mesons, the $Q^2 F_P(Q^2)$ maximum lies in the neighbourhood $Q^2 \simeq 5\,$GeV$^2$. Foreseeable experiments will test these predictions and, providing their $Q^2$ reach meets expectations, potentially also provide details on the momentum dependence of meson form factor scaling violation. Comment: 8 pages, 5 figures, 1 table |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2405.04681 |
| رقم الانضمام: | edsarx.2405.04681 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |