%0 Journal Article %T Observation of the doubly charmed baryon decay Xi(++)(cc) -> Xi(c)'(+)pi(+) %A LHCb Collaboration (Aaij, R. et al %A Jashal, B. K. %A Martinez-Vidal, F. %A Oyanguren, A. %A Remon Alepuz, C. %A Ruiz Vidal, J. %A Sanderswood, I. %J Journal of High Energy Physics %D 2022 %V 05 %N 5 %I Springer %@ 1029-8479 %G English %F LHCbCollaborationAaij_etal2022 %O WOS:000793847800001 %O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5226), last updated on Sun, 22 May 2022 10:18:49 +0000 %X 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. %K Charm Physics %K Flavour Physics %K Hadron-Hadron Scattering %K Proton-Proton Scattering %R 10.1007/JHEP05(2022)038 %U https://arxiv.org/abs/2202.05648 %U https://doi.org/10.1007/JHEP05(2022)038 %P 038-18pp