Given the masses of various atomic particles m_p =1.0072 u, m_n =1.0087 u, m_e =0.000548 u, m_ν̄=0, m_d =2.0141 u, where p ≡ proton, n ≡ neutron, e ≡…

Given the masses of various atomic particles $\displaystyle \mathrm{m}_{\mathrm{p}}=1.0072 \mathrm{u}, \mathrm{m}_{\mathrm{n}}=1.0087 \mathrm{u}$, $\displaystyle \mathrm{m}_{\mathrm{e}}=0.000548 \mathrm{u}, \mathrm{m}_{\bar{\nu}}=0, \mathrm{~m}_{\mathrm{d}}=2.0141 \mathrm{u}$, where $\displaystyle \mathrm{p} \equiv$ proton, $\displaystyle \mathrm{n} \equiv$ neutron, $\displaystyle \mathrm{e} \equiv$ electron, $\displaystyle \bar{\nu} \equiv$ antineutrino and $\displaystyle \mathrm{d} \equiv$ deuteron. Which of the following process is allowed by momentum and energy conservation ?