%0 Journal Article
%T Near-threshold DD spectroscopy and observation of a new charmonium state
%A LHCb Collaboration (Aaij, R. et al
%A Garcia Martin, L. M.
%A Henry, L.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Remon Alepuz, C.
%A Ruiz Vidal, J.
%A Sanchez Mayordomo, C.
%J Journal of High Energy Physics
%D 2019
%V 07
%N 7
%I Springer
%@ 1029-8479
%G English
%F LHCbCollaborationAaij_etal2019
%O WOS:000475573300001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4092), last updated on Mon, 19 Aug 2019 07:31:22 +0000
%X Using proton-proton collision data, corresponding to an integrated luminosity of 9 fb, collected with the LHCb detector between 2011 and 2018, a new narrow charmonium state, the X(3842) resonance, is observed in the decay modes X(3842) ! D0 D 0 and X(3842) ! D+D. The mass and the natural width of this state are measured to be where the fi rst uncertainty is statistical and the second is systematic. The observed mass and narrow natural width suggest the interpretation of the new state as the unobserved spin-3 3 1 3 D 3 charmonium state. In addition, prompt hadroproduction of the (3770) and 2 (3930) states is observed for the fi rst time, and the parameters of these states are measured to be m (3770) = 3778 : 1 0 : 7 0 : 6MeV where the first uncertainty is statistical and the second is systematic.
%K Charm physics
%K Hadron-Hadron scattering (experiments)
%K Heavy quark production
%K Quarkonium
%R 10.1007/JHEP07(2019)035
%U https://arxiv.org/abs/1903.12240
%U https://doi.org/10.1007/JHEP07(2019)035
%P 035-23pp