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The Q-value of the ⁴⁸Ca(¹⁸O, ⁵¹V)¹⁵B reaction is -21.76 ± 0.05 MeV which leads to an atomic mass excess of 28.96 ± 0.05 MeV for ¹⁵B. At E(¹⁸O) = 102 MeV, this 3 proton transfer reaction has a 0° differential cross section of 1.2 μb/sr. No excited states were observed (1978BH02). ¹⁵B is then stable with respect to ¹⁴B + n by 2.77 MeV. ¹⁵B has neither been observed in the ¹¹B(¹⁸O, ¹⁴O)¹⁵B reaction [E(¹⁸O) = 96 and 103 MeV; < 2 nb/sr at θ = 10 - 12°] (1977HI03) nor in the ¹⁴C(⁹Be, ⁸B)¹⁵B reaction [E(⁹Be) = 121 MeV; < 50 nb/sr at θ = 14°] (1975WI26). See also (1976AJ04) and (1975VO09, 1975WI26).