We show how to produce antideuteron, antihelium, and other antinuclei in large fractions from the decays of a new particle ϕ that carries baryon number. Close to threshold, the production of nuclear bound states is preferred over the decay into individual nucleons, effectively decoupling antinuclei and antiproton fluxes and allowing the former to dominate, in clear contrast to antimatter production via coalescence. ϕ can either form dark matter itself or be produced by it, and can give rise to a potentially testable amount of antinuclei.

中文翻译：

---

如何从暗物质中产生抗核

我们展示了如何从带有重子数的新粒子the的衰变中大量产生抗氘，抗氦和其他抗核。与通过结合产生反物质产生明显对比，接近阈值时，优先产生核键合态而不是衰变成单个核子，从而有效地使反核和反质子通量脱钩，并使前者占主导地位。ϕ既可以自身形成暗物质，也可以由暗物质产生，并可能产生可测试数量的抗核物质。