Observation of the decays 𝐵⁺ →Σ𝑐(2455)⁺ ⁺ ¯ Ξ − 𝑐 and 𝐵0 →Σ𝑐(2455)0 ¯ Ξ 0 𝑐
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(Published version)
Date
2025
Authors
Abumusabh, M.
Adachi, I.
Aggarwal, L.
Ahmed, H.
Ahn, Y.
Aihara, H.
Akopov, N.
Alghamdi, S.
Alhakami, M.
Aloisio, A.
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Journal article
Citation
Physical Review D, 2025; 112(5):L051101-1-L051101-9
Statement of Responsibility
The Belle and Belle II Collaborations
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Abstract
We report the first observation of the two-body baryonic decays 𝐵+ →Σ𝑐(2455)++ ¯ Ξ − 𝑐 and 𝐵0 →Σ𝑐(2455)0 ¯ Ξ 0 𝑐 with significances of 7.3𝜎 and 6.2𝜎 , respectively, including statistical and systematic uncertainties. The branching fractions are measured to be ℬ(𝐵+ →Σ𝑐(2455)++ ¯ Ξ − 𝑐) =(5.74 ±1.11 ±0.42+2.47 −1.53) ×10−4 and ℬ(𝐵0 →Σ𝑐(2455)0 ¯ Ξ 0 𝑐) =(4.83 ±1.12 ±0.37+0.72 −0.60) ×10−4 . The first and second uncertainties are statistical and systematic, respectively, while the third ones arise from the absolute branching fractions of ¯ Ξ − 𝑐 or ¯ Ξ 0 𝑐 decays. The data samples used for this analysis have integrated luminosities of 711 fb−1 and 365 fb−1 , and were collected at the ϒ(4𝑆) resonance by the Belle and Belle II detectors operating at the KEKB and SuperKEKB asymmetric-energy 𝑒+𝑒− colliders, respectively.
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Published 5 September 2025; corrected 30 October 2025
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Published by the American Physical Society under the terms of the 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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http://purl.org/au-research/grants/arc/DP200101792
http://purl.org/au-research/grants/arc/DP210101900
http://purl.org/au-research/grants/arc/DP210102831
http://purl.org/au-research/grants/arc/DE220100462
http://purl.org/au-research/grants/arc/LE210100098
http://purl.org/au-research/grants/arc/LE230100085
http://purl.org/au-research/grants/arc/DP210101900
http://purl.org/au-research/grants/arc/DP210102831
http://purl.org/au-research/grants/arc/DE220100462
http://purl.org/au-research/grants/arc/LE210100098
http://purl.org/au-research/grants/arc/LE230100085