TY - JOUR

T1 - Measurement of branching fractions of Λc+ decays to Σ+η and Σ+η′

AU - BESIII Collaboration

AU - Ачасов, Михаил Николаевич

AU - Мучной, Николай Юрьевич

AU - Николаев, Иван Борисович

N1 - Measurement of branching fractions of Λc+ decays to Σ+η and Σ+η′ / M. Ablikim, M. N. Achasov, P. Adlarson [et al.] // Journal of High Energy Physics. – 2025. – Vol. 2025. - No. 11. – P. 67. – DOI 10.1007/jhep11(2025)067. – EDN LTZZXT. The BESIII Collaboration thanks the staff of BEPCII https://cstr.cn/31109.02.BEPC) and the IHEP computing center for their strong support. This work is supported in part by National Key R&D Program of China under Contracts Nos. 2023YFA1606000, 2023YFA1606704; National Natural Science Foundation of China (NSFC) under Contracts Nos. 11635010, 11935015, 11935016, 11935018, 12025502, 12035009, 12035013, 12061131003, 12192260, 12192261, 12192262, 12192263, 12192264, 12192265, 12221005, 12225509, 12235017, 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; Agencia Nacional de Investigación y Desarrollo de Chile (ANID), Chile under Contract No. ANID PIA/APOYO AFB230003; 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 Nos. 2021.0174, 2021.0299; 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; U. S. Department of Energy under Contract No. DE-FG02-05ER41374.

PY - 2025/11/12

Y1 - 2025/11/12

N2 - By analyzing e +e − collision data taken at center-of-mass energies √ s between 4.600 and 4.699 GeV with the BESIII detector at the BEPCII collider, corresponding to an integrated luminosity of 4.5 fb−1 , we study the hadronic decays Λ + c → Σ +η and Λ + c → Σ +η ′ using the single-tag method. The branching fraction ratio of Λ + c → Σ +η relative to Λ + c → Σ +π 0 is determined to be 0.305 ± 0.046stat. ± 0.007syst. , and that of Λ + c → Σ +η ′ relative to Λ + c → Σ +ω is 0.336 ± 0.094stat. ± 0.037syst. . The ratio of B(Λ + c →Σ+η ′ ) B(Λ + c →Σ+η) is determined to be 1.73 ± 0.22stat. ± 0.16syst. . These results enrich our knowledge of charmed baryon decays.

AB - By analyzing e +e − collision data taken at center-of-mass energies √ s between 4.600 and 4.699 GeV with the BESIII detector at the BEPCII collider, corresponding to an integrated luminosity of 4.5 fb−1 , we study the hadronic decays Λ + c → Σ +η and Λ + c → Σ +η ′ using the single-tag method. The branching fraction ratio of Λ + c → Σ +η relative to Λ + c → Σ +π 0 is determined to be 0.305 ± 0.046stat. ± 0.007syst. , and that of Λ + c → Σ +η ′ relative to Λ + c → Σ +ω is 0.336 ± 0.094stat. ± 0.037syst. . The ratio of B(Λ + c →Σ+η ′ ) B(Λ + c →Σ+η) is determined to be 1.73 ± 0.22stat. ± 0.16syst. . These results enrich our knowledge of charmed baryon decays.

KW - Branching fraction

KW - Charm Physics

KW - e +-e − Experiments

UR - https://www.scopus.com/pages/publications/105022312642

UR - https://elibrary.ru/item.asp?id=88160356

U2 - 10.1007/JHEP11(2025)067

DO - 10.1007/JHEP11(2025)067

M3 - Article

VL - 2025

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 11

M1 - 67

ER -