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)

Department of Physics

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25 Citations (Scopus)

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
Publication status	Published - 2019 Aug 12

Bibliographical note

Funding Information:
We thank Professor Fu-sheng Yu for useful discussions and comments. We thank the KEKB group for excellent operation of the accelerator; the KEK cryogenics group for efficient solenoid operations; and the KEK computer group, the NII, and PNNL/EMSL for valuable computing and SINET5 network support. We acknowledge support from MEXT, JSPS and Nagoya’s the Tau-Lepton Physics Research Center (TLPRC) (Japan); ARC (Australia); FWF (Austria); National Natural Science Foundation of China (NSFC) under Contracts No. 11475187, No. 11521505, No. 11575017, No. 11761141009, and the Chinese Academy of Science Center for Excellence in Particle Physics (CCEPP) (China); MSMT (Czechia); the CarlZeiss Foundation (CZF), DFG, the Excellence Cluster Universe (EXC153), and the VolkswagenStiftung (VS) (Germany); DST (India); INFN (Italy); MOE, MSIP, NRF, RSRI, Foreign Large-size Research Facility Application Supporting project (FLRFAS) project and GSDC of KISTI and Korea Research Environment Open Network (KREONET)/Global Ring Network for Advanced Application Development (GLORIAD)(Korea); MNiSW and NCN (Poland); Ministry of Science and Higher Education of the Russian Federation (MSHE), Grant No. 14.W03.31.0026 (Russia); ARRS (Slovenia); IKERBASQUE (Spain); SNSF (Switzerland); MOE and MOST (Taiwan); and DOE and NSF (USA).

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.

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1103/PhysRevD.100.031101

Cite this

@article{628a68812a0d4a0197c38f3f64ec0e8b,

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 N. Gabyshev and Kwon, {Y. J.}",

note = "Funding Information: We thank Professor Fu-sheng Yu for useful discussions and comments. We thank the KEKB group for excellent operation of the accelerator; the KEK cryogenics group for efficient solenoid operations; and the KEK computer group, the NII, and PNNL/EMSL for valuable computing and SINET5 network support. We acknowledge support from MEXT, JSPS and Nagoya{\textquoteright}s the Tau-Lepton Physics Research Center (TLPRC) (Japan); ARC (Australia); FWF (Austria); National Natural Science Foundation of China (NSFC) under Contracts No. 11475187, No. 11521505, No. 11575017, No. 11761141009, and the Chinese Academy of Science Center for Excellence in Particle Physics (CCEPP) (China); MSMT (Czechia); the CarlZeiss Foundation (CZF), DFG, the Excellence Cluster Universe (EXC153), and the VolkswagenStiftung (VS) (Germany); DST (India); INFN (Italy); MOE, MSIP, NRF, RSRI, Foreign Large-size Research Facility Application Supporting project (FLRFAS) project and GSDC of KISTI and Korea Research Environment Open Network (KREONET)/Global Ring Network for Advanced Application Development (GLORIAD)(Korea); MNiSW and NCN (Poland); Ministry of Science and Higher Education of the Russian Federation (MSHE), Grant No. 14.W03.31.0026 (Russia); ARRS (Slovenia); IKERBASQUE (Spain); SNSF (Switzerland); MOE and MOST (Taiwan); and DOE and NSF (USA). 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 - Gabyshev, N.

AU - Kwon, Y. J.

N1 - Funding Information: We thank Professor Fu-sheng Yu for useful discussions and comments. We thank the KEKB group for excellent operation of the accelerator; the KEK cryogenics group for efficient solenoid operations; and the KEK computer group, the NII, and PNNL/EMSL for valuable computing and SINET5 network support. We acknowledge support from MEXT, JSPS and Nagoya’s the Tau-Lepton Physics Research Center (TLPRC) (Japan); ARC (Australia); FWF (Austria); National Natural Science Foundation of China (NSFC) under Contracts No. 11475187, No. 11521505, No. 11575017, No. 11761141009, and the Chinese Academy of Science Center for Excellence in Particle Physics (CCEPP) (China); MSMT (Czechia); the CarlZeiss Foundation (CZF), DFG, the Excellence Cluster Universe (EXC153), and the VolkswagenStiftung (VS) (Germany); DST (India); INFN (Italy); MOE, MSIP, NRF, RSRI, Foreign Large-size Research Facility Application Supporting project (FLRFAS) project and GSDC of KISTI and Korea Research Environment Open Network (KREONET)/Global Ring Network for Advanced Application Development (GLORIAD)(Korea); MNiSW and NCN (Poland); Ministry of Science and Higher Education of the Russian Federation (MSHE), Grant No. 14.W03.31.0026 (Russia); ARRS (Slovenia); IKERBASQUE (Spain); SNSF (Switzerland); MOE and MOST (Taiwan); and DOE and NSF (USA). 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.

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UR - http://www.scopus.com/inward/citedby.url?scp=85072552350&partnerID=8YFLogxK

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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