TY - JOUR
T1 - Observation of the Open-Charm Tetraquark Candidate 𝑇∗e𝑠0(2870)0 in the 𝐵‾→𝐷‾𝐷0𝐾s0 Decay
AU - LHCb Collaboration
AU - Bonacci, R. B.
AU - Dekkers, S.
AU - Egede, U.
AU - Fujii, Y.
AU - Hadavizadeh, T.
AU - Harris, T. H.
AU - Henderson, R. D.L.
AU - Lane, J. J.
AU - Liu, F. L.
AU - Monk, M.
AU - Song, R.
AU - Walton, E. J.
AU - Ward, J. A.
AU - Bediaga, I. B.
AU - Camargo Magalhaes, P.
AU - Cruz Torres, M.
AU - De Freitas Carneiro Da Graca, U.
AU - De Miranda, J. M.
AU - dos Reis, A. C.
AU - Falcao, L. N.
AU - Massafferri, A.
AU - Santoro, L.
AU - Sundfeld, D.
AU - Torres Machado, D.
AU - Amato, S.
AU - Darze, G.
AU - De Paula, L.
AU - Ferreira Rodrigues, F.
AU - Franco Lima, V.
AU - Gandelman, M.
AU - Hicheur, A.
AU - Lopes, J. H.
AU - Nasteva, I.
AU - Nogarolli, P.
AU - Otalora Goicochea, J. M.
AU - Polycarpo, E.
AU - Rangel, M. S.
AU - Souza De Paula, B.
AU - Dong, C.
AU - Gong, G.
AU - Hu, X.
AU - Kang, Y.
AU - Li, A.
AU - Lian, Z.
AU - Ma, G. M.
AU - Meng, F. M.
AU - Mu, H.
AU - Pan, X.
AU - Qin, N.
AU - Calderon Ramirez, S.
N1 - Publisher Copyright:
© 2025 CERN, for the LHCb Collaboration.
PY - 2025/3/14
Y1 - 2025/3/14
N2 - An amplitude analysis of (Formula presented) decays is performed using proton-proton collision data, corresponding to an integrated luminosity of (Formula presented), collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. A resonant structure of spin-parity (Formula presented) is observed in the (Formula presented) invariant-mass spectrum with a significance of (Formula presented). The mass and width of the state, modeled with a Breit-Wigner line shape, are determined to be (Formula presented) and (Formula presented), respectively, where the first uncertainties are statistical and the second systematic. These properties and the quark content are consistent with those of the open-charm tetraquark candidate (Formula presented) observed previously in the (Formula presented) final state of the (Formula presented) decay. This result confirms the existence of the (Formula presented) state in a new decay mode. The (Formula presented) state, reported in the (Formula presented) decay, is also searched for in the (Formula presented) invariant-mass spectrum of the (Formula presented) decay, without finding evidence for it.
AB - An amplitude analysis of (Formula presented) decays is performed using proton-proton collision data, corresponding to an integrated luminosity of (Formula presented), collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. A resonant structure of spin-parity (Formula presented) is observed in the (Formula presented) invariant-mass spectrum with a significance of (Formula presented). The mass and width of the state, modeled with a Breit-Wigner line shape, are determined to be (Formula presented) and (Formula presented), respectively, where the first uncertainties are statistical and the second systematic. These properties and the quark content are consistent with those of the open-charm tetraquark candidate (Formula presented) observed previously in the (Formula presented) final state of the (Formula presented) decay. This result confirms the existence of the (Formula presented) state in a new decay mode. The (Formula presented) state, reported in the (Formula presented) decay, is also searched for in the (Formula presented) invariant-mass spectrum of the (Formula presented) decay, without finding evidence for it.
UR - http://www.scopus.com/inward/record.url?scp=105001189221&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.134.101901
DO - 10.1103/PhysRevLett.134.101901
M3 - Artículo
C2 - 40153632
AN - SCOPUS:105002486528
SN - 0031-9007
VL - 134
SP - 101901
JO - Physical Review Letters
JF - Physical Review Letters
IS - 10
ER -