are the corresponding rates of the total mass loss from the donor and the accretor.

The total mass loss from the donor is $\dot m_\mathrm{d} = \dot m_\mathrm{d,t} + \dot m_\mathrm{d,w}$, where $\dot m_\mathrm{d,t}$ is the mass transfer rate through $L_1$, and $\dot m_\mathrm{d,w}$ is the mass loss from the donor in the form of a fast isotropic wind. As the accretor is less evolved than the donor and is still on the main sequence, its wind mass loss can be neglected. We introduce the following notations:

-   $\beta = -{\dot m_\mathrm{a}}/{\dot m_\mathrm{d,t}} $ — the fraction of the transferred mass that is accreted onto $m_\mathrm{a}$; the conservation factor. With $\beta=1$ the MT is fully conservative.

-   $\delta = {\dot m_\mathrm{d, w}}/{\dot m_\mathrm{d}}$ — the fraction of the total donor mass that was lost in the form of a fast isotropic wind.

With these notations, the total mass loss from the system is $$\label{tot_massloss}
  \dot m_\mathrm{d}+ \dot m_\mathrm{a} =  (1-\beta+\beta\delta)\, \dot m_\mathrm{d},$$ and the mass accreted is $$\label{acc_mass}
  \dot m_\mathrm{a} =-\beta  (1-\delta)\, \dot m_\mathrm{d}.$$

The specific angular momenta of the two binary members, and hence of the mass that is carried away from them (from the accretor star as transferred 