Research output: Contribution to journal › Article › peer-review
Search for the isospin-violating decays 𝜒𝑐𝐽→Λ¯Σ 0+c.c. and 𝜂𝑐→Λ¯Σ 0+c.c. / BESIII Collaboration ; Ачасов, Михаил Николаевич; Мучной, Николай Юрьевич et al.
In: Physical Review D, Vol. 113, No. 11, 112004, 05.06.2026.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Search for the isospin-violating decays 휒푐퐽→Λ¯Σ 0+c.c. and 휂푐→Λ¯Σ 0+c.c.
AU - BESIII Collaboration
AU - Ачасов, Михаил Николаевич
AU - Мучной, Николай Юрьевич
AU - Николаев, Иван Борисович
N1 - The BESIII Collaboration thanks the staff of BEPCII [33] and the IHEP computing center for their strong support. This work is supported in part by the National Key R&D Program of China under Contracts No. 2025YFA1613900, No. 2023YFA1606000, and No. 2023YFA1606704; Beijing Natural Science Foundation (BJNSF) under Contract No. JQ22002; National Natural Science Foundation of China (NSFC) under Contracts No. 11635010, No. 11935015, No. 11935016, No. 11935018, No. 12025502, No. 12035009, No. 12035013, No. 12061131003, No. 12105100, No. 12192260, No. 12192261, No. 12192262, No. 12192263, No. 12192264, No. 12192265, No. 12221005, No. 12225509, No. 12235017, No. 12342502, and No. 12361141819; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the Strategic Priority Research Program of Chinese Academy of Sciences under Contract No. XDA0480600; CAS under Contract No. YSBR-101; 100 Talents Program of CAS; The Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; German Research Foundation DFG under Contract No. FOR5327; Istituto Nazionale di Fisica Nucleare, Italy; Knut and Alice Wallenberg Foundation under Contracts No. 2021.0174, No. 2021.0299, and No. 2023.0315; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Research Foundation of Korea under Contract No. NRF-2022R1A2C1092335; National Science and Technology fund of Mongolia; Polish National Science Centre under Contract No. 2024/53/B/ST2/00975; STFC (United Kingdom); Swedish Research Council under Contract No. 2019.04595; and U.S. Department of Energy under Contract No. DE-FG02-05ER41374.
PY - 2026/6/5
Y1 - 2026/6/5
N2 - Using a sample of (2712.4±14.3)×106 휓(3686) events collected with the BESIII detector, we perform a search for the isospin-violating decays 휒푐퐽→Λ¯Σ 0+c.c.(퐽=0,1,2) and 휂푐→Λ¯Σ 0+c.c. No significant signal for 휒푐퐽 or 휂푐 is observed in the Λ¯Σ 0 invariant mass distribution. The upper limits on the branching fractions at the 90% confidence level are set to be ℬ(휒푐0→Λ¯Σ 0+c.c.)¯Σ 0+c.c.)¯Σ 0+c.c.)¯Σ 0+c.c.)
AB - Using a sample of (2712.4±14.3)×106 휓(3686) events collected with the BESIII detector, we perform a search for the isospin-violating decays 휒푐퐽→Λ¯Σ 0+c.c.(퐽=0,1,2) and 휂푐→Λ¯Σ 0+c.c. No significant signal for 휒푐퐽 or 휂푐 is observed in the Λ¯Σ 0 invariant mass distribution. The upper limits on the branching fractions at the 90% confidence level are set to be ℬ(휒푐0→Λ¯Σ 0+c.c.)¯Σ 0+c.c.)¯Σ 0+c.c.)¯Σ 0+c.c.)
KW - Particle decays
KW - Hadrons
KW - Isospin violation
UR - https://www.scopus.com/pages/publications/105052505735
U2 - 10.1103/513W-6WJL
DO - 10.1103/513W-6WJL
M3 - Article
VL - 113
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 11
M1 - 112004
ER -
ID: 83758323