تقرير
Ab-initio calculation of the proton and the neutron's scalar couplings for new physics searches
| العنوان: | Ab-initio calculation of the proton and the neutron's scalar couplings for new physics searches |
|---|---|
| المؤلفون: | Borsanyi, Sz., Fodor, Z., Hoelbling, C., Lellouch, L., Szabo, K. K., Torrero, C., Varnhorst, L. |
| سنة النشر: | 2020 |
| المجموعة: | High Energy Physics - Lattice High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Lattice, High Energy Physics - Phenomenology |
| الوصف: | Many low-energy, particle-physics experiments seek to reveal new fundamental physics by searching for very rare scattering events on atomic nuclei. The interpretation of their results requires quantifying the non-linear effects of the strong interaction on the spin-independent couplings of this new physics to protons and neutrons. Here we present a fully-controlled, ab-initio calculation of these couplings to the quarks within those constituents of nuclei. We use lattice quantum chromodynamics computations for the four lightest species of quarks and heavy-quark expansions for the remaining two. We determine each of the six quark contributions with an accuracy better than 15%. Our results are especially important for guiding and interpreting experimental searches for our universe's dark matter. Comment: 39 pages, 13 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2007.03319 |
| رقم الأكسشن: | edsarx.2007.03319 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |