First measurements of absolute branching fractions of the Ξc+ baryon at Belle

(Belle Collaboration)

doi:10.1103/PhysRevD.100.031101

First measurements of absolute branching fractions of the Ξc+ baryon at Belle

(Belle Collaboration)

Peking University
Fudan University
The Graduate University for Advanced Studies
High Energy Accelerator Research Organization, Tsukuba
Korea University
The University of Tokyo
King Abdulaziz University
University of Tabuk
Brookhaven National Laboratory
University of South Carolina
Moscow Institute of Physics and Technology
German Electron Synchrotron
University of Sydney
Pacific Northwest National Laboratory
Indian Institute of Technology Madras
University of Göttingen
Austrian Academy of Sciences
Indian Institute of Science Education and Research Mohali
Indian Institute of Technology Guwahati
Charles University
Jožef Stefan Institute
RAS - Budker Institute of Nuclear Physics
Novosibirsk State University
H. Niewodniczanski Institute of Nuclear Physics
University of Maribor
University of Hawai'i at Mānoa
National Institute for Nuclear Physics
University of Naples Federico II
Karlsruhe Institute of Technology
Max Planck Institute for Physics (Werner Heisenberg Institute)
National Central University
Hanyang University
RAS - P.N. Lebedev Physics Institute
Korea Institute of Science and Technology Information
Sungkyunkwan University
Indian Institute of Technology Hyderabad
Wayne State University
Université Paris-Sud
University of Melbourne
Panjab University
Virginia Polytechnic Institute and State University

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44 Scopus citations

Abstract

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.

Original language	English
Article number	031101
Journal	Physical Review D
Volume	100
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.100.031101
State	Published - 12 Aug 2019

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10.1103/PhysRevD.100.031101

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@article{f77ca1a6c5874faeac24d6e4aea10afa,

title = "First measurements of absolute branching fractions of the Ξc+ baryon at Belle",

abstract = "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 B{\=B} pairs collected at the (4S) resonance with the Belle detector at the KEKB e+e- collider. We measure the absolute branching fraction of {\=B}0→{\=Λ}c-Ξc+ with the Ξc+ recoiling against {\=Λ}c- in {\=B}0 decays resulting in B({\=B}0→{\=Λ}c-Ξc+)=[1.16±0.42(stat.)±0.15(syst.)]×10-3. We then measure the product branching fractions B({\=B}0→{\=Λ}c-Ξc+)B(Ξc+→Ξ-π+π+) and B({\=B}0→{\=Λ}c-Ξc+)B(Ξc+→pK-π+). Dividing these product branching fractions by {\=B}0→{\=Λ}c-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.",

author = "\{(Belle Collaboration)\} and Li, \{Y. B.\} and Shen, \{C. P.\} and I. Adachi and Ahn, \{J. K.\} and H. Aihara and \{Al Said\}, S. and Asner, \{D. M.\} and H. Atmacan and T. Aushev and R. Ayad and V. Babu and Bakich, \{A. M.\} and Y. Ban and V. Bansal and P. Behera and C. Bele{\~n}o and M. Berger and V. Bhardwaj and B. Bhuyan and T. Bilka and J. Biswal and A. Bobrov and A. Bozek and M. Bra{\v c}ko and Browder, \{T. E.\} and M. Campajola and L. Cao and D. {\v C}ervenkov and V. Chekelian and A. Chen and Cheon, \{B. G.\} and K. Chilikin and Cho, \{H. E.\} and K. Cho and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and \{Di Carlo\}, S. and Z. Dole{\v Z}al and D. Dossett and S. Eidelman and D. Epifanov and Fast, \{J. E.\} and T. Ferber and Fulsom, \{B. G.\} and R. Garg and V. Gaur and Kim, \{H. J.\} and H. Park",

note = "Publisher Copyright: {\textcopyright} 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.",

year = "2019",

month = aug,

day = "12",

doi = "10.1103/PhysRevD.100.031101",

language = "English",

volume = "100",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - First measurements of absolute branching fractions of the Ξc+ baryon at Belle

AU - (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 - Dossett, D.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fast, J. E.

AU - Ferber, T.

AU - Fulsom, B. G.

AU - Garg, R.

AU - Gaur, V.

AU - Kim, H. J.

AU - Park, H.

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.

UR - https://www.scopus.com/pages/publications/85072552350

U2 - 10.1103/PhysRevD.100.031101

DO - 10.1103/PhysRevD.100.031101

M3 - Article

AN - SCOPUS:85072552350

SN - 2470-0010

VL - 100

JO - Physical Review D

JF - Physical Review D

IS - 3

M1 - 031101

ER -

First measurements of absolute branching fractions of the Ξc+ baryon at Belle

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