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Title: Observation of the decays 𝐵+ → Σ𝑐⁢(2455)++$$\bar{Ξ}^-_c$$ and 𝐵0 → Σ𝑐⁢(2455)0⁢$$\bar{Ξ}^0_𝑐$$

Journal Article · · Physical Review. D.
DOI: https://doi.org/10.1103/2fhj-8vyx · OSTI ID:3006458
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We report the first observation of the two-body baryonic decays 𝐵+ → Σ𝑐⁢(2455)++$$\bar{Ξ}^-_c$$ and 𝐵0 → Σ𝑐⁢(2455)0⁢$$\bar{Ξ}^0_𝑐$$ with significances of 7.3⁢𝜎 and 6.2⁢𝜎, respectively, including statistical and systematic uncertainties. The branching fractions are measured to be ℬ⁡(𝐵+ → Σ𝑐⁢(2455)++$$\bar{Ξ}^-_c$$) = (5.74 ± 1.11 ± 0.4⁢2$$^{+2.47}_{−1.53}$$) ×10−4 and ℬ⁡(𝐵0 → Σ𝑐⁢(2455)0⁢$$\bar{Ξ}^0_𝑐$$) = (4.83 ± 1.12 ± 0.3⁢7$$^{+0.72}_{−0.60}$$) ×10−4. The first and second uncertainties are statistical and systematic, respectively, while the third ones arise from the absolute branching fractions of $$\bar{Ξ}^-_c$$ or $$\bar{Ξ}^0_𝑐$$ 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⁡(4⁢𝑆) resonance by the Belle and Belle II detectors operating at the KEKB and SuperKEKB asymmetric-energy 𝑒+⁢𝑒 colliders, respectively.

Research Organization:
Univ. of Hawaii, Honolulu, HI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC06-76RL01830; SC0007983; SC0009824; SC0009973; SC0010007; SC0010073; SC0010118; SC0010504; SC0011784; SC0012704; SC0019230; SC0021274; SC0021616; SC0022350; SC0023470
OSTI ID:
3006458
Journal Information:
Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 5 Vol. 112; ISSN 2470-0029; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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