TY - JOUR AU - LHCb Collaboration (Aaij, R. et al AU - Jashal, B. K. AU - Martinez-Vidal, F. AU - Oyanguren, A. AU - Remon Alepuz, C. AU - Ruiz Vidal, J. AU - Sanderswood, I. PY - 2022 DA - 2022// TI - Observation of the doubly charmed baryon decay Xi(++)(cc) -> Xi(c)'(+)pi(+) T2 - J. High Energy Phys. JO - Journal of High Energy Physics SP - 038 EP - 18pp VL - 05 IS - 5 PB - Springer KW - Charm Physics KW - Flavour Physics KW - Hadron-Hadron Scattering KW - Proton-Proton Scattering AB - The Xi(++)(cc) -> Xi('+)(c)pi(+) decay is observed using proton-proton collisions collected by the LHCb experiment at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb(-1). The Xi(++)(cc) -> Xi('+)(c)pi(+) decay is reconstructed partially, where the photon from the Xi('+)(c) -> Xi(+)(c)gamma decay is not reconstructed and the pK(-)pi(+) final state of the Sc+ baryon is employed. The Xi(++)(cc) -> Xi('+)(c)pi(+) branching fraction relative to that of the Xi(++)(cc) -> Xi('+)(c)pi(+) decay is measured to be 1.41 +/- 0.17 +/- 0.10, where the first uncertainty is statistical and the second systematic. SN - 1029-8479 UR - https://arxiv.org/abs/2202.05648 UR - https://doi.org/10.1007/JHEP05(2022)038 DO - 10.1007/JHEP05(2022)038 LA - English N1 - WOS:000793847800001 ID - LHCbCollaborationAaij_etal2022 ER -