Measurement of branching fraction and direct CP asymmetry in charmless B+ →K+K-π+ decays at Belle

(Belle Collaboration)

doi:10.1103/PhysRevD.96.031101

Measurement of branching fraction and direct CP asymmetry in charmless B+ →K+K-π+ decays at Belle

(Belle Collaboration)

Department of Physics

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

25 Citations (Scopus)

Abstract

We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K-π+. The results are based on a data sample that contains 772×106 BB; pairs collected at the ?(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38±0.40±0.35)×10-6 and -0.170±0.073±0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K- invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c2, which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K- invariant-mass region.

Original language	English
Article number	031101
Journal	Physical Review D
Volume	96
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevD.96.031101
Publication status	Published - 2017 Aug 31

Bibliographical note

Funding Information:
We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group, the National Institute of Informatics, and the PNNL/EMSL computing group for valuable computing and SINET5 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council; Austrian Science Fund under Grant No. P 26794-N20; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, No. 11175187, No. 11475187, No. 11521505, and No. 11575017; the Chinese Academy of Science Center for Excellence in Particle Physics; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; the WCU program of the Ministry of Education, National Research Foundation (NRF) of Korea Grants No. 2011-0029457, No. 2012-0008143, No. 2014R1A2A2A01005286, No. 2014R1A2A2A01002734, No. 2015R1A2A2A01003280, No. 2015H1A2A1033649, No. 2016R1D1A1B01010135, No. 2016K1A3A7A09005603, No. 2016K1A3A7A09005604, No. 2016R1D1A1B02012900, No. 2016K1A3A7A09005606, No. NRF-2013K1A3A7A06056592; the Brain Korea 21-Plus program, Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project and the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Education and Science of the Russian Federation and the Russian Foundation for Basic Research; the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science and MINECO (Juan de la Cierva), Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the U.S. Department of Energy and the National Science Foundation.

Publisher Copyright:
© 2017 American Physical Society.

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevD.96.031101

Cite this

@article{a651f406b47b4cb59faa3ad9c39c5432,

title = "Measurement of branching fraction and direct CP asymmetry in charmless B+ →K+K-π+ decays at Belle",

abstract = "We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K-π+. The results are based on a data sample that contains 772×106 BB; pairs collected at the ?(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38±0.40±0.35)×10-6 and -0.170±0.073±0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K- invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c2, which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K- invariant-mass region.",

author = "{(Belle Collaboration)} and Hsu, {C. L.} and D. Dossett and Sevior, {M. E.} and I. Adachi and H. Aihara and {Al Said}, S. and Asner, {D. M.} and H. Atmacan and V. Aulchenko and T. Aushev and R. Ayad and I. Badhrees and Bakich, {A. M.} and E. Barberio and P. Behera and M. Berger and V. Bhardwaj and B. Bhuyan and J. Biswal and T. Bloomfield and A. Bondar and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and P. Chang and V. Chekelian and A. Chen and Cheon, {B. G.} and K. Chilikin and R. Chistov and K. Cho and Y. Choi and D. Cinabro and N. Dash and {Di Carlo}, S. and Z. Dole{\v Z}al and Z. Dr{\'a}sal and S. Eidelman and H. Farhat and Fast, {J. E.} and Fulsom, {B. G.} and V. Gaur and N. Gabyshev and A. Garmash and P. Goldenzweig and B. Golob and O. Grzymkowska and E. Guido and E. Won",

note = "Funding Information: We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group, the National Institute of Informatics, and the PNNL/EMSL computing group for valuable computing and SINET5 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council; Austrian Science Fund under Grant No. P 26794-N20; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, No. 11175187, No. 11475187, No. 11521505, and No. 11575017; the Chinese Academy of Science Center for Excellence in Particle Physics; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; the WCU program of the Ministry of Education, National Research Foundation (NRF) of Korea Grants No. 2011-0029457, No. 2012-0008143, No. 2014R1A2A2A01005286, No. 2014R1A2A2A01002734, No. 2015R1A2A2A01003280, No. 2015H1A2A1033649, No. 2016R1D1A1B01010135, No. 2016K1A3A7A09005603, No. 2016K1A3A7A09005604, No. 2016R1D1A1B02012900, No. 2016K1A3A7A09005606, No. NRF-2013K1A3A7A06056592; the Brain Korea 21-Plus program, Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project and the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Education and Science of the Russian Federation and the Russian Foundation for Basic Research; the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science and MINECO (Juan de la Cierva), Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the U.S. Department of Energy and the National Science Foundation. Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = aug,

day = "31",

doi = "10.1103/PhysRevD.96.031101",

language = "English",

volume = "96",

journal = "Physical Review D",

issn = "2470-0010",

publisher = "American Physical Society",

number = "3",

}

TY - JOUR

T1 - Measurement of branching fraction and direct CP asymmetry in charmless B+ →K+K-π+ decays at Belle

AU - (Belle Collaboration)

AU - Hsu, C. L.

AU - Dossett, D.

AU - Sevior, M. E.

AU - Adachi, I.

AU - Aihara, H.

AU - Al Said, S.

AU - Asner, D. M.

AU - Atmacan, H.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Ayad, R.

AU - Badhrees, I.

AU - Bakich, A. M.

AU - Barberio, E.

AU - Behera, P.

AU - Berger, M.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Biswal, J.

AU - Bloomfield, T.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, P.

AU - Chekelian, V.

AU - Chen, A.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Chistov, R.

AU - Cho, K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dash, N.

AU - Di Carlo, S.

AU - DoleŽal, Z.

AU - Drásal, Z.

AU - Eidelman, S.

AU - Farhat, H.

AU - Fast, J. E.

AU - Fulsom, B. G.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Goldenzweig, P.

AU - Golob, B.

AU - Grzymkowska, O.

AU - Guido, E.

AU - Won, E.

N1 - Funding Information: We thank the KEKB group for the excellent operation of the accelerator; the KEK cryogenics group for the efficient operation of the solenoid; and the KEK computer group, the National Institute of Informatics, and the PNNL/EMSL computing group for valuable computing and SINET5 network support. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan, the Japan Society for the Promotion of Science (JSPS), and the Tau-Lepton Physics Research Center of Nagoya University; the Australian Research Council; Austrian Science Fund under Grant No. P 26794-N20; the National Natural Science Foundation of China under Contracts No. 10575109, No. 10775142, No. 10875115, No. 11175187, No. 11475187, No. 11521505, and No. 11575017; the Chinese Academy of Science Center for Excellence in Particle Physics; the Ministry of Education, Youth and Sports of the Czech Republic under Contract No. LTT17020; the Carl Zeiss Foundation, the Deutsche Forschungsgemeinschaft, the Excellence Cluster Universe, and the VolkswagenStiftung; the Department of Science and Technology of India; the Istituto Nazionale di Fisica Nucleare of Italy; the WCU program of the Ministry of Education, National Research Foundation (NRF) of Korea Grants No. 2011-0029457, No. 2012-0008143, No. 2014R1A2A2A01005286, No. 2014R1A2A2A01002734, No. 2015R1A2A2A01003280, No. 2015H1A2A1033649, No. 2016R1D1A1B01010135, No. 2016K1A3A7A09005603, No. 2016K1A3A7A09005604, No. 2016R1D1A1B02012900, No. 2016K1A3A7A09005606, No. NRF-2013K1A3A7A06056592; the Brain Korea 21-Plus program, Radiation Science Research Institute, Foreign Large-size Research Facility Application Supporting project and the Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information; the Polish Ministry of Science and Higher Education and the National Science Center; the Ministry of Education and Science of the Russian Federation and the Russian Foundation for Basic Research; the Slovenian Research Agency; Ikerbasque, Basque Foundation for Science and MINECO (Juan de la Cierva), Spain; the Swiss National Science Foundation; the Ministry of Education and the Ministry of Science and Technology of Taiwan; and the U.S. Department of Energy and the National Science Foundation. Publisher Copyright: © 2017 American Physical Society.

PY - 2017/8/31

Y1 - 2017/8/31

N2 - We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K-π+. The results are based on a data sample that contains 772×106 BB; pairs collected at the ?(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38±0.40±0.35)×10-6 and -0.170±0.073±0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K- invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c2, which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K- invariant-mass region.

AB - We report a study of the charmless hadronic decay of the charged B meson to the three-body final state K+K-π+. The results are based on a data sample that contains 772×106 BB; pairs collected at the ?(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. The measured inclusive branching fraction and direct CP asymmetry are (5.38±0.40±0.35)×10-6 and -0.170±0.073±0.017, respectively, where the first uncertainties are statistical and the second are systematic. The K+K- invariant mass distribution of the signal candidates shows an excess in the region below 1.5 GeV/c2, which is consistent with the previous studies from BABAR and LHCb. In addition, strong evidence of a large direct CP asymmetry is found in the low K+K- invariant-mass region.

UR - http://www.scopus.com/inward/record.url?scp=85051568935&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.96.031101

DO - 10.1103/PhysRevD.96.031101

M3 - Article

AN - SCOPUS:85051568935

SN - 2470-0010

VL - 96

JO - Physical Review D

JF - Physical Review D

IS - 3

M1 - 031101

ER -

Measurement of branching fraction and direct CP asymmetry in charmless B+ →K+K-π+ decays at Belle

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