Observation of B+ →p Λ ̄ K+K- and B+ → p ̄ Λk+K+ OBSERVATION of ... P.-C. LU et al.

(The Belle Collaboration)

doi:10.1103/PhysRevD.99.032003

Observation of B+ →p Λ ̄ K+K- and B+ → p ̄ Λk+K+ OBSERVATION of ... P.-C. LU et al.

(The Belle Collaboration)

Chair of Physics I

National Taiwan University
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
National Research Nuclear University MEPhI
KEK and Graduate University for Advanced Studies (Sokendai)
High Energy Accelerator Research Organization (KEK)
Korea University
University of Tokyo
Kind AbdulAziz University
University of Tabuk
Brookhaven National Laboratory
University of South Carolina
Budker Institute of Nuclear Physics (SB RAS)
Novosibirsk State University
Moscow Institute of Physics and Technology
Tata Institute of Fundamental Research, Mumbai
King Abdulaziz City for Science and Technology
University of Sydney
Pacific Northwest National Laboratory
Indian Institute of Technology Madras
Georg August Universität Göttingen
Stefan Meyer Institut für Subatomare Physik (SMI)
Indian Institute of Science Education and Research Mohali
Indian Institute of Technology Guwahati
Charles University
Jožef Stefan Institute
Wayne State University
Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
University of Maribor
University of Hawaii
Humanoid Technologies Lab (H2T)
Fu Jen Catholic University
Max-Planck-Institut für Physik
National Central University
Hanyang University
Korea Institute of Science and Technology Information
Gyeongsang National University
Sungkyunkwan University
Indian Institute of Technology Hyderabad
Deutsches Elektronen-Synchrotron (DESY)
Indian Institute of Technology Bhubaneswar
Laboratoire de l'Accélérateur Linéaire
Panjab University
Virginia Polytechnic Institute and State University
INFN Sez. di Torino
Niigata University
Nara Women's University
Nagoya University
University of Melbourne
Tohoku University
Osaka Prefecture University
Indiana University Bloomington
Kyungpook National University
Beihang University
Kennesaw State University
Chonnam National University
Soongsil University
Univ. of Cincinnati
Univ. of Ljubljana
University of Mississippi
University of Munich
Yonsei University
Justus-Liebig-Universität Gießen
Institute of High Energy Physics Chinese Academy of Science
Beijing University
Fudan University
University of Miyazaki
INFN Sezione di Napoli
Università di Napoli Federico II
University of Pittsburgh
Toho University
Kanagawa University
Nippon Dental University
Luther College, Decorah
Forschungszentrum Jülich (FZJ)
Technical University of Munich
University of Malaya
EPFL
Biodonostia Health Research Institute-CIBERNED-UPV-EHU
Basque Foundation for Science
Österreichische Akademie der Wissenschaften
Yamagata University
Tokyo Institute of Technology
Cluster of Excellence E-conversion
Institute for High Energy Physics (IHEP)
Gifu University
Tokyo Metropolitan University
Riken
Showa Pharmaceutical University
Japan Atomic Energy Agency
Duke University
National United University Taiwan
University of Science and Technology of China

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We report the study of B+→pΛ̄K+K- and B+→p̄ΛK+K+ decays using a 772×106 BB̄ pair data sample recorded on the Ï (4S) resonance with the Belle detector at KEKB. The following branching fractions are measured: B(B+→pΛ̄K+K-)=(4.10-0.43+0.45±0.50)×10-6, B(B+→p̄ΛK+K+)=(3.70-0.37+0.39±0.44)×10-6, B(ηc→pΛ̄K-+c.c.)=(2.83-0.34+0.36±0.35)×10-3 and B(B+→pΛ̄φ)=(7.95±2.09±0.77)×10-7, where c.c. denotes the corresponding charge-conjugation process. The intermediate resonance decays are excluded in the four-body decay measurements. We also find evidence for B(ηc→Λ(1520)Λ̄+c.c.)=(3.48±1.48±0.46)×10-3 and B(B+→Λ(1520)Λ̄K+)=(2.23±0.63±0.25)×10-6. No significant signals are found for J/ψ→Λ(1520)Λ̄+c.c. and B+→Λ̄(1520)ΛK+; we set the 90% confidence level upper limits on their decay branching fractions as <1.80×10-3 and <2.08×10-6, respectively.

Original language	English
Article number	032003
Journal	Physical Review D
Volume	99
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.99.032003
State	Published - 1 Feb 2019

Access to Document

10.1103/PhysRevD.99.032003

Cite this

@article{092ec641bc554548830535c75108b753,

title = "Observation of B+ →p Λ{\= } K+K- and B+ → p{\= } Λk+K+ OBSERVATION of ... P.-C. LU et al.",

abstract = "We report the study of B+→p{\=Λ}K+K- and B+→{\=p}ΛK+K+ decays using a 772×106 B{\=B} pair data sample recorded on the {\"I} (4S) resonance with the Belle detector at KEKB. The following branching fractions are measured: B(B+→p{\=Λ}K+K-)=(4.10-0.43+0.45±0.50)×10-6, B(B+→{\=p}ΛK+K+)=(3.70-0.37+0.39±0.44)×10-6, B(ηc→p{\=Λ}K-+c.c.)=(2.83-0.34+0.36±0.35)×10-3 and B(B+→p{\=Λ}φ)=(7.95±2.09±0.77)×10-7, where c.c. denotes the corresponding charge-conjugation process. The intermediate resonance decays are excluded in the four-body decay measurements. We also find evidence for B(ηc→Λ(1520){\=Λ}+c.c.)=(3.48±1.48±0.46)×10-3 and B(B+→Λ(1520){\=Λ}K+)=(2.23±0.63±0.25)×10-6. No significant signals are found for J/ψ→Λ(1520){\=Λ}+c.c. and B+→{\=Λ}(1520)ΛK+; we set the 90\% confidence level upper limits on their decay branching fractions as <1.80×10-3 and <2.08×10-6, respectively.",

author = "\{(The Belle Collaboration)\} and Lu, \{P. C.\} and Wang, \{M. Z.\} and R. Chistov and P. Chang and I. Adachi and Ahn, \{J. K.\} and H. Aihara and \{Al Said\}, S. and Asner, \{D. M.\} and H. Atmacan and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and I. Badhrees and Bakich, \{A. M.\} 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 G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, \{T. E.\} and L. Cao and D. {\v C}ervenkov and Chang, \{M. C.\} and V. Chekelian and A. Chen and Cheon, \{B. G.\} and K. Chilikin and K. Cho and Choi, \{S. K.\} and Y. Choi and S. Choudhury and D. Cinabro and S. Cunliffe and N. Dash and \{Di Carlo\}, S. and Z. Dole{\v Z}al and Dong, \{T. V.\} and Z. Dr{\'a}sal and S. Eidelman and D. Epifanov and Fast, \{J. E.\} and S. Paul",

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 = feb,

day = "1",

doi = "10.1103/PhysRevD.99.032003",

language = "English",

volume = "99",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Observation of B+ →p Λ ̄ K+K- and B+ → p ̄ Λk+K+ OBSERVATION of ... P.-C. LU et al.

AU - (The Belle Collaboration)

AU - Lu, P. C.

AU - Wang, M. Z.

AU - Chistov, R.

AU - Chang, P.

AU - Adachi, I.

AU - Ahn, J. K.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Badhrees, I.

AU - Bakich, A. M.

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 - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Cao, L.

AU - Červenkov, D.

AU - Chang, M. C.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choudhury, S.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Dash, N.

AU - Di Carlo, S.

AU - DoleŽal, Z.

AU - Dong, T. V.

AU - Drásal, Z.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fast, J. E.

AU - Paul, S.

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 - 2019/2/1

Y1 - 2019/2/1

N2 - We report the study of B+→pΛ̄K+K- and B+→p̄ΛK+K+ decays using a 772×106 BB̄ pair data sample recorded on the Ï (4S) resonance with the Belle detector at KEKB. The following branching fractions are measured: B(B+→pΛ̄K+K-)=(4.10-0.43+0.45±0.50)×10-6, B(B+→p̄ΛK+K+)=(3.70-0.37+0.39±0.44)×10-6, B(ηc→pΛ̄K-+c.c.)=(2.83-0.34+0.36±0.35)×10-3 and B(B+→pΛ̄φ)=(7.95±2.09±0.77)×10-7, where c.c. denotes the corresponding charge-conjugation process. The intermediate resonance decays are excluded in the four-body decay measurements. We also find evidence for B(ηc→Λ(1520)Λ̄+c.c.)=(3.48±1.48±0.46)×10-3 and B(B+→Λ(1520)Λ̄K+)=(2.23±0.63±0.25)×10-6. No significant signals are found for J/ψ→Λ(1520)Λ̄+c.c. and B+→Λ̄(1520)ΛK+; we set the 90% confidence level upper limits on their decay branching fractions as <1.80×10-3 and <2.08×10-6, respectively.

AB - We report the study of B+→pΛ̄K+K- and B+→p̄ΛK+K+ decays using a 772×106 BB̄ pair data sample recorded on the Ï (4S) resonance with the Belle detector at KEKB. The following branching fractions are measured: B(B+→pΛ̄K+K-)=(4.10-0.43+0.45±0.50)×10-6, B(B+→p̄ΛK+K+)=(3.70-0.37+0.39±0.44)×10-6, B(ηc→pΛ̄K-+c.c.)=(2.83-0.34+0.36±0.35)×10-3 and B(B+→pΛ̄φ)=(7.95±2.09±0.77)×10-7, where c.c. denotes the corresponding charge-conjugation process. The intermediate resonance decays are excluded in the four-body decay measurements. We also find evidence for B(ηc→Λ(1520)Λ̄+c.c.)=(3.48±1.48±0.46)×10-3 and B(B+→Λ(1520)Λ̄K+)=(2.23±0.63±0.25)×10-6. No significant signals are found for J/ψ→Λ(1520)Λ̄+c.c. and B+→Λ̄(1520)ΛK+; we set the 90% confidence level upper limits on their decay branching fractions as <1.80×10-3 and <2.08×10-6, respectively.

UR - https://www.scopus.com/pages/publications/85062606141

U2 - 10.1103/PhysRevD.99.032003

DO - 10.1103/PhysRevD.99.032003

M3 - Article

AN - SCOPUS:85062606141

SN - 2470-0010

VL - 99

JO - Physical Review D

JF - Physical Review D

IS - 3

M1 - 032003

ER -

Observation of B+ →p Λ ̄ K+K- and B+ → p ̄ Λk+K+ OBSERVATION of ... P.-C. LU et al.

Abstract

Access to Document

Other files and links

Fingerprint

Cite this