Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
First measurements of absolute branching fractions of the Ξc+ baryon at Belle. / Belle Collaboration ; Кроковный, Павел Петрович.
в: Physical Review D, Том 100, № 3, 031101, 12.08.2019.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - First measurements of absolute branching fractions of the Ξc+ baryon at Belle
AU - The BELLE collaboration
AU - Li, Y. B.
AU - Shen, C. P.
AU - Adachi, I.
AU - Ahn, J. K.
AU - Aihara, H.
AU - Al Said, S.
AU - Asner, D. M.
AU - Atmacan, H.
AU - Aushev, T.
AU - Ayad, R.
AU - Babu, V.
AU - Bakich, A. M.
AU - Ban, Y.
AU - Bansal, V.
AU - Behera, P.
AU - Beleño, C.
AU - Berger, M.
AU - Bhardwaj, V.
AU - Bhuyan, B.
AU - Bilka, T.
AU - Biswal, J.
AU - Bobrov, A.
AU - Bozek, A.
AU - Bračko, M.
AU - Browder, T. E.
AU - Campajola, M.
AU - Cao, L.
AU - Červenkov, D.
AU - Chekelian, V.
AU - Chen, A.
AU - Cheon, B. G.
AU - Chilikin, K.
AU - Cho, H. E.
AU - Cho, K.
AU - Choi, Y.
AU - Choudhury, S.
AU - Cinabro, D.
AU - Cunliffe, S.
AU - Di Carlo, S.
AU - DoleŽal, Z.
AU - Eidelman, S.
AU - Epifanov, D.
AU - Gabyshev, N.
AU - Garmash, A.
AU - Kuzmin, A.
AU - Matvienko, D.
AU - Shwartz, B.
AU - Vinokurova, A.
AU - Zhilich, V.
AU - Zhulanov, V.
AU - Кроковный, Павел Петрович
N1 - Publisher Copyright: © 2019 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 SCOAP .
PY - 2019/8/12
Y1 - 2019/8/12
N2 - We present the first measurements of the absolute branching fractions of Ξc+ decays into Ξ-π+π+ and pK-π+ final states. Our analysis is based on a data set of (772±11)×106 BB̄ pairs collected at the (4S) resonance with the Belle detector at the KEKB e+e- collider. We measure the absolute branching fraction of B̄0→Λ̄c-Ξc+ with the Ξc+ recoiling against Λ̄c- in B̄0 decays resulting in B(B̄0→Λ̄c-Ξc+)=[1.16±0.42(stat.)±0.15(syst.)]×10-3. We then measure the product branching fractions B(B̄0→Λ̄c-Ξc+)B(Ξc+→Ξ-π+π+) and B(B̄0→Λ̄c-Ξc+)B(Ξc+→pK-π+). Dividing these product branching fractions by B̄0→Λ̄c-Ξc+ yields B(Ξc+→Ξ-π+π+)=[2.86±1.21(stat.)±0.38(syst.)]% and B(Ξc+→pK-π+)=[0.45±0.21(stat.)±0.07(syst.)]%. Our result for B(Ξc+→Ξ-π+π+) can be combined with Ξc+ branching fractions measured relative to Ξc+→Ξ-π+π+ to set the absolute scale for many Ξc+ branching fractions.
AB - We present the first measurements of the absolute branching fractions of Ξc+ decays into Ξ-π+π+ and pK-π+ final states. Our analysis is based on a data set of (772±11)×106 BB̄ pairs collected at the (4S) resonance with the Belle detector at the KEKB e+e- collider. We measure the absolute branching fraction of B̄0→Λ̄c-Ξc+ with the Ξc+ recoiling against Λ̄c- in B̄0 decays resulting in B(B̄0→Λ̄c-Ξc+)=[1.16±0.42(stat.)±0.15(syst.)]×10-3. We then measure the product branching fractions B(B̄0→Λ̄c-Ξc+)B(Ξc+→Ξ-π+π+) and B(B̄0→Λ̄c-Ξc+)B(Ξc+→pK-π+). Dividing these product branching fractions by B̄0→Λ̄c-Ξc+ yields B(Ξc+→Ξ-π+π+)=[2.86±1.21(stat.)±0.38(syst.)]% and B(Ξc+→pK-π+)=[0.45±0.21(stat.)±0.07(syst.)]%. Our result for B(Ξc+→Ξ-π+π+) can be combined with Ξc+ branching fractions measured relative to Ξc+→Ξ-π+π+ to set the absolute scale for many Ξc+ branching fractions.
KW - NONLEPTONIC WEAK DECAYS
KW - QUARK
UR - http://www.scopus.com/inward/record.url?scp=85072552350&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.100.031101
DO - 10.1103/PhysRevD.100.031101
M3 - Article
AN - SCOPUS:85072552350
VL - 100
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 3
M1 - 031101
ER -
ID: 21608668