Observation of the T_cc̅1(4430)^- state in B⁰→ D^*−D⁰K⁺ decays

@misc{collaboration2026observation,
  title = {{Observation of the $T_c\barc1(4430)^-$ state in $B^0\to D^*-D^0K^+$ decays}},
  author = {LHCb collaboration and R. Aaij and M. Abdelfatah and A. S. W. Abdelmotteleb and C. Abellan Beteta and F. Abudinén and T. Ackernley and A. A. Adefisoye and B. Adeva and M. Adinolfi and P. Adlarson and C. Agapopoulou and C. A. Aidala and S. Akar and K. Akiba and H. Al Saleh and P. Albicocco and J. Albrecht and R. Aleksiejunas and F. Alessio and P. Alvarez Cartelle and A. A. Alves Jr and S. Amato and J. L. Amey and Y. Amhis and Z. Amos and L. An and L. Anderlini and P. Andreola and M. Andreotti and S. Andres Estrada and A. Anelli and D. Ao and C. Arata and F. Archilli and Z. Areg and M. Argenton and S. Arguedas Cuendis and L. Arnone and M. Artuso and E. Aslanides and R. Ataíde Da Silva and M. Atzeni and B. Audurier and J. A. Authier and D. Bacher and I. Bachiller Perea and S. Bachmann and M. Bachmayer and J. J. Back and M. Bai and Z. B. Bai and V. Balagura and A. Balboni and W. Baldini and Z. Baldwin and L. Balzani and H. Bao and J. Baptista de Souza Leite and C. Barbero Pretel},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.35239},
  eprint = {2610.35239},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.35239},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Observation of the T_cc̅1(4430)^- state in B^0→ D^*−D^0K^+ decays
AU  - LHCb collaboration
AU  - R. Aaij
AU  - M. Abdelfatah
AU  - A. S. W. Abdelmotteleb
AU  - C. Abellan Beteta
AU  - F. Abudinén
AU  - T. Ackernley
AU  - A. A. Adefisoye
AU  - B. Adeva
AU  - M. Adinolfi
AU  - P. Adlarson
AU  - C. Agapopoulou
AU  - C. A. Aidala
AU  - S. Akar
AU  - K. Akiba
AU  - H. Al Saleh
AU  - P. Albicocco
AU  - J. Albrecht
AU  - R. Aleksiejunas
AU  - F. Alessio
AU  - P. Alvarez Cartelle
AU  - A. A. Alves Jr
AU  - S. Amato
AU  - J. L. Amey
AU  - Y. Amhis
AU  - Z. Amos
AU  - L. An
AU  - L. Anderlini
AU  - P. Andreola
AU  - M. Andreotti
AU  - S. Andres Estrada
AU  - A. Anelli
AU  - D. Ao
AU  - C. Arata
AU  - F. Archilli
AU  - Z. Areg
AU  - M. Argenton
AU  - S. Arguedas Cuendis
AU  - L. Arnone
AU  - M. Artuso
AU  - E. Aslanides
AU  - R. Ataíde Da Silva
AU  - M. Atzeni
AU  - B. Audurier
AU  - J. A. Authier
AU  - D. Bacher
AU  - I. Bachiller Perea
AU  - S. Bachmann
AU  - M. Bachmayer
AU  - J. J. Back
AU  - M. Bai
AU  - Z. B. Bai
AU  - V. Balagura
AU  - A. Balboni
AU  - W. Baldini
AU  - Z. Baldwin
AU  - L. Balzani
AU  - H. Bao
AU  - J. Baptista de Souza Leite
AU  - C. Barbero Pretel
PY  - 2026
DA  - 2026/10/26
PB  - arXiv
DO  - 10.48550/arxiv.2610.35239
UR  - https://arxiv.org/abs/2610.35239
AB  - A study of resonant structures in B^0 → D^*−D^0K^+ decays is presented. The analysis uses proton-proton collision data collected by the LHCb experiment at center-of-mass energies of √s = 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb^−1. The analysis demonstrates that the existing known excited D_s^+ resonances in the D^0K^+ spectrum are insufficient to describe the data. The inclusion of the tetraquark state T_cc̅1(4430)^- improves the description of the data with a statistical significance exceeding 5σ. This corresponds to the first observation of the T_cc̅1(4430)^- → D^*− D^0 decay. The measured properties of the T_cc̅1(4430)^- state are consistent with those previously measured in its decay to the ψ(2S)π^- final state.
ER  -