We calculate the lifetime of the deuteron from dimension-six quark operators that violate baryon number by one unit. We construct an effective field theory (EFT) for $|\mathrm{\Delta }B|=1$ interactions that give rise to nucleon and $\mathrm{\Delta }B=1$ deuteron decay in a systematic expansion. Nucleon decay introduces imaginary parts in the low-energy constants of the $\mathrm{\Delta }B=0$ nuclear interactions in Chiral EFT. We show that up to and including next-to-leading order the deuteron decay rate is given by the sum of the decay rates of the free proton and neutron. The first nuclear correction is expected to contribute at the few-percent level and comes with an undetermined low-energy constant. We discuss its relation to earlier potential-model calculations.

我们从违反重子数一个单位的六维夸克算子计算氘核的寿命。我们构建了一个有效场论 (EFT)$|\mathrm{\Delta }乙|=1$ 产生核子的相互作用和 $\mathrm{\Delta }乙=1$系统扩张中的氘核衰变。核子衰变在低能常数中引入虚部$\mathrm{\Delta }乙=0$手性 EFT 中的核相互作用。我们表明，直到并包括次前阶，氘核衰变率由自由质子和中子的衰变率之和给出。预计第一次核校正将在几个百分点的水平上做出贡献，并伴随着一个未确定的低能常数。我们讨论了它与早期电位模型计算的关系。