Macroscopic quantum-mechanical scattering

TL;DR

This paper explores the possibility of macroscopic quantum-mechanical scattering, particularly with neutrinos, which could explain certain neutrino detection experiments using perfect crystals.

Contribution

It introduces the concept of macroscopic quantum scattering in crystals and analyzes conditions under which neutrinos can produce coherent scattering on a large scale.

Findings

Neutrinos can induce macroscopic quantum scattering in monocrystals.

Coherence domains are relevant for both quantum scattering and classical diffraction.

Neutrinos' small cross-section leads to distinctive scattering features.

Abstract

In certain conditions a macroscopic quantum-mechanical scattering may occur, which may lead to a coherent cross-section on a macroscopic scale in a monocrystal. The conditions are satisfied by neutrinos, but not satisfied by other projectiles, with a higher cross-section. This may explain Weber-type experiments of neutrino detection by a perfect, stiff sapphire monocrystal. The occurrence of coherence domains for quantum-mechanical scattering and classical diffraction is analyzed, and the force exerted upon a macroscopic target is estimated. It is concluded that neutrinos exhibit a distinctive feature in this respect, due precisely to their very small cross-section.