Evidence for B+→hcK+ and observation of ηc(2S)→pp¯π+π−

(Belle Collaboration)

doi:10.1103/PhysRevD.100.012001

Evidence for B+→hcK+ and observation of ηc(2S)→pp¯π+π−

(Belle Collaboration)

RAS - P.N. Lebedev Physics Institute
The Graduate University for Advanced Studies
High Energy Accelerator Research Organization, Tsukuba
Brookhaven National Laboratory
RAS - Budker Institute of Nuclear Physics
Novosibirsk State University
Moscow Institute of Physics and Technology
University of Tabuk
Tata Institute of Fundamental Research
King Abdulaziz City for Science and Technology
Pacific Northwest National Laboratory
Indian Institute of Technology Madras
University of Göttingen
Austrian Academy of Sciences
Indian Institute of Science Education and Research Mohali
Charles University
Jožef Stefan Institute
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
Korea Institute of Science and Technology Information
Gyeongsang National University
Sungkyunkwan University
Wayne State University
German Electron Synchrotron
Université Paris-Sud
Panjab University
Virginia Polytechnic Institute and State University
Indian Institute of Technology Hyderabad

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

11 Scopus citations

Abstract

A search for the decays B+→hcK+ and B0→hcKS0 is performed. Evidence for the decay B+→hcK+ is found; its significance is 4.8σ. No evidence is found for B0→hcKS0. The branching fraction for B+→hcK+ is measured to be (3.7-0.9+1.0 -0.8+0.8)×10-5; the upper limit for the B0→hcKS0 branching fraction is 1.4×10-5 at 90% C.L. In addition, a study of the ppπ+π- invariant mass distribution in the channel B+→(ppπ+π-)K+ results in the first observation of the decay ηc(2S)→ppπ+π- with 12.1σ significance. The analysis is based on the 711 fb-1 data sample collected by the Belle detector at the asymmetric-energy e+e- collider KEKB at the (4S) resonance.

Original language	English
Article number	012001
Journal	Physical Review D
Volume	100
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.100.012001
State	Published - 10 Jul 2019

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10.1103/PhysRevD.100.012001

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@article{cc7fd2fcce6f4410a63f5266696aec1f,

title = "Evidence for B+→hcK+ and observation of ηc(2S)→pp¯π+π−",

abstract = "A search for the decays B+→hcK+ and B0→hcKS0 is performed. Evidence for the decay B+→hcK+ is found; its significance is 4.8σ. No evidence is found for B0→hcKS0. The branching fraction for B+→hcK+ is measured to be (3.7-0.9+1.0 -0.8+0.8)×10-5; the upper limit for the B0→hcKS0 branching fraction is 1.4×10-5 at 90\% C.L. In addition, a study of the ppπ+π- invariant mass distribution in the channel B+→(ppπ+π-)K+ results in the first observation of the decay ηc(2S)→ppπ+π- with 12.1σ significance. The analysis is based on the 711 fb-1 data sample collected by the Belle detector at the asymmetric-energy e+e- collider KEKB at the (4S) resonance.",

author = "\{(Belle Collaboration)\} and K. Chilikin and I. Adachi and Asner, \{D. M.\} and V. Aulchenko and T. Aushev and R. Ayad and V. Babu and I. Badhrees and V. Bansal and P. Behera and C. Bele{\~n}o and M. Berger and V. Bhardwaj and T. Bilka and J. Biswal and A. Bobrov and A. Bondar 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. Cho and Choi, \{S. K.\} and Y. Choi and D. Cinabro and S. Cunliffe and \{Di Carlo\}, S. and Z. Dole{\v Z}al and Dong, \{T. V.\} 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 A. Garmash and M. Gelb and A. Giri and P. Goldenzweig and O. Grzymkowska and J. Haba and T. Hara 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 = jul,

day = "10",

doi = "10.1103/PhysRevD.100.012001",

language = "English",

volume = "100",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "1",

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TY - JOUR

T1 - Evidence for B+→hcK+ and observation of ηc(2S)→pp¯π+π−

AU - (Belle Collaboration)

AU - Chilikin, K.

AU - Adachi, I.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Babu, V.

AU - Badhrees, I.

AU - Bansal, V.

AU - Behera, P.

AU - Beleño, C.

AU - Berger, M.

AU - Bhardwaj, V.

AU - Bilka, T.

AU - Biswal, J.

AU - Bobrov, A.

AU - Bondar, 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 - Cho, K.

AU - Choi, S. K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Cunliffe, S.

AU - Di Carlo, S.

AU - DoleŽal, Z.

AU - Dong, T. V.

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 - Garmash, A.

AU - Gelb, M.

AU - Giri, A.

AU - Goldenzweig, P.

AU - Grzymkowska, O.

AU - Haba, J.

AU - Hara, T.

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 - 2019/7/10

Y1 - 2019/7/10

N2 - A search for the decays B+→hcK+ and B0→hcKS0 is performed. Evidence for the decay B+→hcK+ is found; its significance is 4.8σ. No evidence is found for B0→hcKS0. The branching fraction for B+→hcK+ is measured to be (3.7-0.9+1.0 -0.8+0.8)×10-5; the upper limit for the B0→hcKS0 branching fraction is 1.4×10-5 at 90% C.L. In addition, a study of the ppπ+π- invariant mass distribution in the channel B+→(ppπ+π-)K+ results in the first observation of the decay ηc(2S)→ppπ+π- with 12.1σ significance. The analysis is based on the 711 fb-1 data sample collected by the Belle detector at the asymmetric-energy e+e- collider KEKB at the (4S) resonance.

AB - A search for the decays B+→hcK+ and B0→hcKS0 is performed. Evidence for the decay B+→hcK+ is found; its significance is 4.8σ. No evidence is found for B0→hcKS0. The branching fraction for B+→hcK+ is measured to be (3.7-0.9+1.0 -0.8+0.8)×10-5; the upper limit for the B0→hcKS0 branching fraction is 1.4×10-5 at 90% C.L. In addition, a study of the ppπ+π- invariant mass distribution in the channel B+→(ppπ+π-)K+ results in the first observation of the decay ηc(2S)→ppπ+π- with 12.1σ significance. The analysis is based on the 711 fb-1 data sample collected by the Belle detector at the asymmetric-energy e+e- collider KEKB at the (4S) resonance.

UR - https://www.scopus.com/pages/publications/85082978498

U2 - 10.1103/PhysRevD.100.012001

DO - 10.1103/PhysRevD.100.012001

M3 - Article

AN - SCOPUS:85082978498

SN - 2470-0010

VL - 100

JO - Physical Review D

JF - Physical Review D

IS - 1

M1 - 012001

ER -

Evidence for B+→hcK+ and observation of ηc(2S)→pp¯π+π−

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