TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Henry, L.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
PY  - 2021
DA  - 2021//
TI  - Observation of a New Excited D-s(+) Meson in B-0 -> D- D+ K+ pi(-) Decays
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 122002 - 11pp
VL  - 126
IS  - 12
PB  - Amer Physical Soc
AB  - Using pp collision data corresponding to an integrated luminosity of 5.4 fb(-1) collected with the LHCb detector at a center-of-mass energy of 13 TeV, the B-0 -> D- D+ K+ pi(-) decay is studied. A new excited D-s(+) meson is observed decaying into the D+K+pi(-) final state with large statistical significance. The pole mass and width, and the spin parity of the new state are measured with an amplitude analysis to be m(R) = 2591 +/- 6 +/- 7 MeV, Gamma(R) = 89 +/- 16 +/- 12 MeV, and J(P) = 0(-), where the first uncertainty is statistical and the second systematic. Fit fractions for all components in the amplitude analysis are also reported. The new resonance, denoted as D-s0(2590)(+), is a strong candidate to be the D-s(2(1)S(0))(+) state, the radial excitation of the pseudoscalar ground-state D-s(+) meson.
SN  - 0031-9007
UR  - https://arxiv.org/abs/2011.09112
UR  - https://doi.org/10.1103/PhysRevLett.126.122002
DO  - 10.1103/PhysRevLett.126.122002
LA  - English
N1  - WOS:000646119900007
ID  - LHCbCollaborationAaij_etal2021
ER  -