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    Partial wave analysis of J/? ??? ?
    (American Physical Society, 2022) Ablikim, M.; Achasov, M.N.; Adlarson, P.; Ahmed, S.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, M.R.; An, Q.; Bai, X.H.; Bai, Y.; Bakina, O.; Çetin, Serkant Ali; Kolcu, Onur Buğra
    Using a sample of (10.09±0.04)×109 J/? events collected with the BESIII detector, a partial wave analysis of J/???? ? is performed. The masses and widths of the observed resonances and their branching fractions are reported. The main contribution is from J/???f0(2020) with f0(2020)?? ? , which is found with a significance of greater than 25?. The product branching fraction B(J/???f0(2020)) B(f0(2020)?? ? ) is measured to be (2.63±0.06(stat.)+0.31-0.46(syst.))×10-4. © 2022 American Physical Society. All rights reserved.
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    Partially Occluded Face Expression Recognition with CBAM-Based Residual Network for Teaching Scene
    (Institute of Electrical and Electronics Engineers Inc., 2023) Bai, Y.; Chen, L.; Li, M.; Wu, M.; Pedrycz, W.; Hirota, K.
    In this paper, a deep residual network based on convolutional block attention module (CBAM) is proposed, which is utilized for feature extraction of partially occluded face expression data. The proposed method overcomes the problem of localized occlusion face feature extraction by focusing on the regions and channels containing important information in the occluded face data through CBAM. Multi-task cascaded convolutional networks (MTCNN) are firstly utilized to localize the key regions of face emotion, and then deep emotion features are extracted by CBAM-ResNet network. The final emotion labels are generated. The effectiveness of this paper's method is verified on the RAF-DB dataset and the occluded CK+ dataset. The experimental accuracy in the RAF-DB dataset is 76.3%, which is 3.74% and 1.64% higher than the accuracy produced by the method of RGBT, and the WLS-RF, respectively. Application experiments are carried out in the real teaching scenario, which verifies the applicability of the algorithm in the real teaching scene. © 2023 IEEE.
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    Search for baryon- and lepton-number violating decays D0 ? p ¯ e+ and D0 ?pe-
    (American Physical Society, 2022) Ablikim, M.; Achasov, M.N.; Adlarson, P.; Ahmed, S.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, M.R.; An, Q.; Bai, X.H.; Bai, Y.; Bakina, O.
    Using an electron-positron collision data sample corresponding to an integrated luminosity of 2.93 fb-1 collected with the BESIII detector at a center-of-mass energy of 3.773 GeV, we search for the baryon-number and lepton-number violating decays D0?p¯e+ and D0?pe-. No obvious signals are found with the current statistics. The upper limits on the branching fractions for D0?p¯e+ and D0?pe- are set to be 1.2×10-6 and 2.2×10-6 at 90% confidence level, respectively. © 2022 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
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    Study of light scalar mesons through Ds+ ??0?0e+?e and KS0 KS0 e+?e decays
    (American Physical Society, 2022) Ablikim, M.; Achasov, M.N.; Adlarson, P.; Ahmed, S.; Albrecht, M.; Aliberti, R.; Amoroso, A.; An, M.R.; An, Q.; Bai, X.H.; Bai, Y.; Bakina, O.; Kolcu, Onur Buğra
    Using 6.32 fb-1 of e+e- collision data recorded by the BESIII detector at center-of-mass energies between 4.178 to 4.226 GeV, we present the first measurement of the decay Ds+?f0(980)e+?e,f0(980)??0?0. The product branching fraction of Ds+?f0(980)e+?e,f0(980)??0?0 is measured to be (7.9±1.4stat±0.4syst)×10-4, with a statistical significance of 7.8?. Furthermore, the upper limits on the product branching fractions of Ds+?f0(500)e+?e with f0(500)??0?0 and the branching fraction of Ds+?KS0KS0e+?e are set to be 7.3×10-4 and 3.8×10-4 at 90% confidence level, respectively. Our results provide valuable inputs to the understanding of the structures of light scalar mesons. © 2022 authors. Published by the American Physical Society.