Ten trillion neutrinos pass through your hand every second, and fewer than one actually interacts with any of the atoms that make up your hand. When neutrinos do interact with another particle, it happens at very close distances and involves a high-momentum transfer.
A new paper published in Physical Review Letters shows that neutrinos sometimes can also interact with a nucleus but inflict no more than a "glancing blow" — resulting in a particle being created out of a vacuum.
Producing an entirely new particle — in this case a charged pion — requires much more energy than it would take to blast the nucleus apart — which is why the physicists are always surprised that the reaction happens as often as it does.
Love may laugh at locksmiths, but he has a profound respect for money bags. -- Sidney Paternoster, "The Folly of the Wise"