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PreprintCC BY 4.0arXiv

First measurement of ψ(3686)→p̅ K+ Σ*(1385)0 + c.c. and ψ(3686)→p̅ K*(892)0 Σ+ + c.c.

  • BESIII Collaboration
  • M. Ablikim
  • M. N. Achasov
  • P. Adlarson
  • X. C. Ai
  • C. S. Akondi
  • R. Aliberti
  • A. Amoroso
  • Q. An
  • Y. H. An
  • M. S. Anderson
  • Y. Bai
772 more authors
  • O. Bakina
  • H. R. Bao
  • X. L. Bao
  • M. Barbagiovanni
  • V. Batozskaya
  • K. Begzsuren
  • N. Berger
  • M. Berlowski
  • M. B. Bertani
  • D. Bettoni
  • F. Bianchi
  • E. Bianco
  • A. Bortone
  • I. Boyko
  • R. A. Briere
  • A. Brueggemann
  • D. Cabiati
  • H. Cai
  • M. H. Cai
  • X. Cai
  • A. Calcaterra
  • G. F. Cao
  • N. Cao
  • S. A. Cetin
  • X. Y. Chai
  • J. F. Chang
  • T. T. Chang
  • G. R. Che
  • Y. Z. Che
  • C. H. Chen
  • Chao Chen
  • G. Chen
  • H. S. Chen
  • H. Y. Chen
  • M. L. Chen
  • S. J. Chen
  • S. M. Chen
  • T. Chen
  • W. Chen
  • X. R. Chen
  • X. T. Chen
  • X. Y. Chen
  • Y. B. Chen
  • Y. Q. Chen
  • Z. K. Chen
  • J. Cheng
  • L. N. Cheng
  • S. K. Choi

60 listed; 784 in total.

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Abstract

Based on a sample of (2712.4 ± 14.3) × 106 ψ(3686) events collected with the BESIII detector at the BEPCII collider, we report the first observation of the decays ψ(3686)→p̅ K+ Σ*(1385)0+c.c. and ψ(3686)→p̅ K*(892)0 Σ+ + c.c.. The corresponding branching fractions are determined to be ℬ(ψ(3686)→p̅K+Σ*(1385)0+c.c.)=(3.94±0.15stat.±0.24syst.)×10−5 and ℬ(ψ(3686)→p̅K*(892)0Σ++c.c.)=(4.93±0.14stat.±0.30syst.)×10−5. Furthermore, we search for the hidden-strange pentaquark candidates Nx(1875) and Nx(2100) in the invariant mass spectra of K+ Σ*(1385)0 and K*(892)0 Σ+, respectively. No significant signals are observed and the upper limits on the branching fractions at the 90% confidence level are ℬ(ψ(3686)→p̅Nx(1875)→p̅K+Σ*(1385)0)<1.58×10−6 and ℬ(ψ(3686)→p̅Nx(2100)→p̅K*(892)0Σ+)<3.09×10−7.

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Cite

BibTeXRIS
BibTeX
@misc{collaboration2026first,
  title = {{First measurement of $ψ(3686)\to\barp K^+ Σ^*(1385)^0 + c.c.$ and $ψ(3686)\to\barp K^*(892)^0 Σ^+ + c.c.$}},
  author = {BESIII Collaboration and M. Ablikim and M. N. Achasov and P. Adlarson and X. C. Ai and C. S. Akondi and R. Aliberti and A. Amoroso and Q. An and Y. H. An and M. S. Anderson and Y. Bai and O. Bakina and H. R. Bao and X. L. Bao and M. Barbagiovanni and V. Batozskaya and K. Begzsuren and N. Berger and M. Berlowski and M. B. Bertani and D. Bettoni and F. Bianchi and E. Bianco and A. Bortone and I. Boyko and R. A. Briere and A. Brueggemann and D. Cabiati and H. Cai and M. H. Cai and X. Cai and A. Calcaterra and G. F. Cao and N. Cao and S. A. Cetin and X. Y. Chai and J. F. Chang and T. T. Chang and G. R. Che and Y. Z. Che and C. H. Chen and Chao Chen and G. Chen and H. S. Chen and H. Y. Chen and M. L. Chen and S. J. Chen and S. M. Chen and T. Chen and W. Chen and X. R. Chen and X. T. Chen and X. Y. Chen and Y. B. Chen and Y. Q. Chen and Z. K. Chen and J. Cheng and L. N. Cheng and S. K. Choi},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.34706},
  eprint = {2610.34706},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.34706},
  note = {CC BY 4.0},
}
RIS
TY  - UNPB
TI  - First measurement of ψ(3686)→p̅ K^+ Σ^*(1385)^0 + c.c. and ψ(3686)→p̅ K^*(892)^0 Σ^+ + c.c.
AU  - BESIII Collaboration
AU  - M. Ablikim
AU  - M. N. Achasov
AU  - P. Adlarson
AU  - X. C. Ai
AU  - C. S. Akondi
AU  - R. Aliberti
AU  - A. Amoroso
AU  - Q. An
AU  - Y. H. An
AU  - M. S. Anderson
AU  - Y. Bai
AU  - O. Bakina
AU  - H. R. Bao
AU  - X. L. Bao
AU  - M. Barbagiovanni
AU  - V. Batozskaya
AU  - K. Begzsuren
AU  - N. Berger
AU  - M. Berlowski
AU  - M. B. Bertani
AU  - D. Bettoni
AU  - F. Bianchi
AU  - E. Bianco
AU  - A. Bortone
AU  - I. Boyko
AU  - R. A. Briere
AU  - A. Brueggemann
AU  - D. Cabiati
AU  - H. Cai
AU  - M. H. Cai
AU  - X. Cai
AU  - A. Calcaterra
AU  - G. F. Cao
AU  - N. Cao
AU  - S. A. Cetin
AU  - X. Y. Chai
AU  - J. F. Chang
AU  - T. T. Chang
AU  - G. R. Che
AU  - Y. Z. Che
AU  - C. H. Chen
AU  - Chao Chen
AU  - G. Chen
AU  - H. S. Chen
AU  - H. Y. Chen
AU  - M. L. Chen
AU  - S. J. Chen
AU  - S. M. Chen
AU  - T. Chen
AU  - W. Chen
AU  - X. R. Chen
AU  - X. T. Chen
AU  - X. Y. Chen
AU  - Y. B. Chen
AU  - Y. Q. Chen
AU  - Z. K. Chen
AU  - J. Cheng
AU  - L. N. Cheng
AU  - S. K. Choi
PY  - 2026
DA  - 2026/10/26
PB  - arXiv
DO  - 10.48550/arxiv.2610.34706
UR  - https://arxiv.org/abs/2610.34706
AB  - Based on a sample of (2712.4 ± 14.3) × 10^6 ψ(3686) events collected with the BESIII detector at the BEPCII collider, we report the first observation of the decays ψ(3686)→p̅ K^+ Σ^*(1385)^0+c.c. and ψ(3686)→p̅ K^*(892)^0 Σ^+ + c.c.. The corresponding branching fractions are determined to be ℬ(ψ(3686)→p̅K^+Σ^*(1385)^0+c.c.)=(3.94±0.15_stat.±0.24_syst.)×10^−5 and ℬ(ψ(3686)→p̅K^*(892)^0Σ^++c.c.)=(4.93±0.14_stat.±0.30_syst.)×10^−5. Furthermore, we search for the hidden-strange pentaquark candidates N_x(1875) and N_x(2100) in the invariant mass spectra of K^+ Σ^*(1385)^0 and K^*(892)^0 Σ^+, respectively. No significant signals are observed and the upper limits on the branching fractions at the 90% confidence level are ℬ(ψ(3686)→p̅N_x(1875)→p̅K^+Σ^*(1385)^0)<1.58×10^−6 and ℬ(ψ(3686)→p̅N_x(2100)→p̅K^*(892)^0Σ^+)<3.09×10^−7.
ER  -