First measurement of $ψ(3686)\to\bar{p} K^{+} Σ^{*}(1385)^{0} + c.c.$ and $ψ(3686)\to\bar{p} K^{*}(892)^{0} Σ^{+} + c.c.$

Based on a sample of $(2712.4 \pm 14.3) \times 10^6$ $ψ(3686)$ events collected with the BESIII detector at the BEPCII collider, we report the first observation of the decays $ψ(3686)\to\bar{p} K^{+} Σ^{*}(1385)^{0}+c.c.$ and $ψ(3686)\to\bar{p} K^{*}(892)^{0} Σ^{+} + c.c.$. The corresponding branching fractions are determined to be $\mathcal{B}(ψ(3686)\to\bar{p}K^+Σ^{*}(1385)^{0}+c.c.)=(3.94\pm0.15_{\text{stat.}}\pm0.24_{\text{syst.}})\times10^{-5}$ and $\mathcal{B}(ψ(3686)\to\bar{p}K^{*}(892)^{0}Σ^++c.c.)=(4.93\pm0.14_{\text{stat.}}\pm0.30_{\text{syst.}})\times10^{-5}$. 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 $\mathcal{B}(ψ(3686)\to\bar{p}N_{x}(1875)\to\bar{p}K^+Σ^{*}(1385)^{0})<1.58\times10^{-6}$ and $\mathcal{B}(ψ(3686)\to\bar{p}N_{x}(2100)\to\bar{p}K^{*}(892)^{0}Σ^+)<3.09\times10^{-7}$.

Authors

Publication Details

Journal
arXiv (Cornell University)
Published
2026-10-26
DOI
https://doi.org/10.48550/arxiv.2610.34706
Primary Topic
Quantum Chromodynamics and Particle Interactions
Type
preprint
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preprint

First measurement of $ψ(3686)\to\bar{p} K^{+} Σ^{*}(1385)^{0} + c.c.$ and $ψ(3686)\to\bar{p} K^{*}(892)^{0} Σ^{+} + c.c.$

X. C. Ai, W. X. Fang, S. M. Chen, Niklaus Berger et al.
arXiv (Cornell University)
Quantum Chromodynamics and Particle Interactions
preprint

First measurement of $ψ(3686)\to\bar{p} K^{+} Σ^{*}(1385)^{0} + c.c.$ and $ψ(3686)\to\bar{p} K^{*}(892)^{0} Σ^{+} + c.c.$

X. C. Ai, W. X. Fang, S. M. Chen, Niklaus Berger, V. Batozskaya, A. Calcaterra, G. F. Cao, S. S. Fang, D. Bettoni, N. Cao, K. Begzsuren, H. L. Dai, Z. H. Duan, S. J. Chen, G Cibinetto, S. K. Choi, I. Boyko, E. Bianco, M. L. Chen, A. Brueggemann, Roy A. Briere, G. R. Che, A. Bortone, E. Di Fiore, Fabrizio Bianchi, D. Dedovich, M Destefanis, BESIII Collaboration, Y. Z. Che, R. Aliberti, M. Y. Dong, F. De Mori, M. N. Achasov, M. Berlowski, M. C. Du, X. Chu, X. Y. Chai, S. X. Du, T. T. Chang, J. Cottee-Meldrum, A. Denig, S Gevrek Çetin, R. E. de Boer, F. Cossio, H. S. Chen, A. Amoroso, K. X. Fan, P Adlarson, M. Ablikim, M. H. Cai, M. Barbagiovanni, M. B. Bertani, M. S. Anderson, C. S. Akondi, X. L. Bao, G. F. Fan, Q. An, P. Egorov, A. Dbeyssi, O. Bakina, I. Denisenko, Z. Y. Deng, H. R. Bao, L. Y. Dong, X. L. Du, Z. K. Chen, Y. Q. Chen, Jin Fang, J. J. Fan, H. B. Cai, J. Fang, J. P. Dai, J. Cheng, W. Chen, L. N. Cheng, J. Morris Chang, Y. Bai, G. Chen, Y. Q. Du, Y. H. Fan, X. K. Cai, X. Dong, C. L. Philip Chen, H. Y. Chen, T. Chen, Y. H. An, X. X. Ding, Y. Q. Ding, Z. J. Dong, X. C. Dai, Chao Chen, X. R. Chen, Shaoxu Du, J. Dong, D. Cabiati, Y. Y. Duan
preprint en

Abstract

Based on a sample of $(2712.4 \pm 14.3) \times 10^6$ $ψ(3686)$ events collected with the BESIII detector at the BEPCII collider, we report the first observation of the decays $ψ(3686)\to\bar{p} K^{+} Σ^{*}(1385)^{0}+c.c.$ and $ψ(3686)\to\bar{p} K^{*}(892)^{0} Σ^{+} + c.c.$. The corresponding branching fractions are determined to be $\mathcal{B}(ψ(3686)\to\bar{p}K^+Σ^{*}(1385)^{0}+c.c.)=(3.94\pm0.15_{\text{stat.}}\pm0.24_{\text{syst.}})\times10^{-5}$ and $\mathcal{B}(ψ(3686)\to\bar{p}K^{*}(892)^{0}Σ^++c.c.)=(4.93\pm0.14_{\text{stat.}}\pm0.30_{\text{syst.}})\times10^{-5}$. 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 $\mathcal{B}(ψ(3686)\to\bar{p}N_{x}(1875)\to\bar{p}K^+Σ^{*}(1385)^{0})<1.58\times10^{-6}$ and $\mathcal{B}(ψ(3686)\to\bar{p}N_{x}(2100)\to\bar{p}K^{*}(892)^{0}Σ^+)<3.09\times10^{-7}$.

arXiv (Cornell University)
Quantum Chromodynamics and Particle Interactions
DOIOpen Access PDFOpenAlex
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