Observation of the Rare Baryonic Decay B^{+}→pΛ[over ¯] and Measurement of its Weak Decay Parameter. - Aaij R; Abdelmotteleb ASW; Abellan Beteta C; Abudinén F; Ackernley T; Adefisoye AA; Adeva B; Adinolfi M; Adlarson P; Agapopoulou C; Aidala CA; Ajaltouni Z; et al. (Physical review letters, 2026)