Measurement of the branching fraction and CP asymmetry in B-0 -> pi(0)pi(0) decays, and an improved constraint on phi(2)

T. Julius; M. E. Sevior; G. B. Mohanty; I. Adachi; H. Aihara; S. Al Said; D. M. Asner; V. Aulchenko; T. Aushev; R. Ayad; V. Babu; I. Badhrees; A. M. Bakich; V. Bansal; E. Barberio; M. Barrett; M. Berger; V. Bhardwaj; B. Bhuyan; J. Biswal; T. Bloomfield; A. Bobrov; A. Bondar; G. Bonvicini; A. Bozek; M. Bracko; T. E. Browder; D. Cervenkov; M-C Chang; Y. Chao; V. Chekelian; A. Chen; B. G. Cheon; K. Chilikin; K. Cho; Y. Choi; D. Cinabro; N. Dash; S. Di Carlo; Z. Dolezal; D. Dossett; Z. Drasal; D. Dutta; S. Eidelman; H. Farhat; J. E. Fast; T. Ferber; B. G. Fulsom; V. Gaur; N. Gabyshev; A. Garmash; R. Gillard; P. Goldenzweig; J. Haba; T. Hara; K. Hayasaka; H. Hayashii; W-S Hou; C-L Hsu; T. Iijima; K. Inami; A. Ishikawa; R. Itoh; Y. Iwasaki; W. W. Jacobs; I. Jaegle; Y. Jin; D. Joffe; K. K. Joo; J. Kahn; G. Karyan; P. Katrenko; T. Kawasaki; C. Kiesling; D. Y. Kim; H. J. Kim; J. B. Kim; K. T. Kim; M. J. Kim; S. H. Kim; Y. J. Kim; K. Kinoshita; P. Kodys; S. Korpar; D. Kotchetkov; P. Krizan; P. Krokovny; J. F. Krohn; T. Kuhr; R. Kulasiri; A. Kuzmin; Y-J Kwon; J. S. Lange; I. S. Lee; C. H. Li; L. Li; Y. Li; L. Li Gioi; J. Libby; D. Liventsev; T. Luo; J. MacNaughton; M. Masuda; T. Matsuda; M. Merola; K. Miyabayashi; H. Miyata; R. Mizuk; H. K. Moon; T. Mori; R. Mussa; E. Nakano; M. Nakao; T. Nanut; K. J. Nath; Z. Natkaniec; M. Nayak; N. K. Nisar; S. Nishida; S. Ogawa; H. Ono; P. Pakhlov; G. Pakhlova; B. Pal; S. Pardi; C-S Park; H. Park; L. Pesantez; R. Pestotnik; L. E. Piilonen; C. Pulvermacher; M. Ritter; H. Sahoo; Y. Sakai; M. Salehi; S. Sandilya; L. Santelj; T. Sanuki; Y. Sato; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; A. J. Schwartz; Y. Seino; K. Senyo; V. Shebalin; T-A Shibata; J-G. Shiu; B. Shwartz; A. Sokolov; E. Solovieva; M. Staric; T. Sumiyoshi; U. Tamponi; K. Tanida; F. Tenchini; K. Trabelsi; M. Uchida; S. Uehara; T. Uglov; Y. Unno; S. Uno; P. Urquijo; Y. Usov; C. Van Hulse; G. Varner; K. E. Varvell; A. Vossen; E. Waheed; C. H. Wang; M-Z Wang; P. Wang; M. Watanabe; Y. Watanabe; E. Widmann; K. M. Williams; E. Won; Y. Yamashita; H. Ye; C. Z. Yuan; Y. Yusa; Z. P. Zhang; V. Zhilich; V. Zhulanov; A. Zupanc; Belle Collaboration

doi:10.1103/PhysRevD.96.032007

$Measurement of the branching fraction and CP asymmetry in B-0 -> pi(0)pi(0) decays, and an improved constraint on phi(2)$

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Measurement of the branching fraction and CP asymmetry in B-0 -> pi(0)pi(0) decays, and an improved constraint on phi(2)

T. Julius, M. E. Sevior, G. B. Mohanty, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, V. Aulchenko, T. Aushev, R. Ayad, …

Physical review. D, Vol.96(3)

31/08/2017

DOI: https://doi.org/10.1103/PhysRevD.96.032007

Abstract

Astronomy & Astrophysics

Physical Sciences

Physics

Physics, Particles & Fields

Science & Technology

We measure the branching fraction and CP violation asymmetry in the decay B-0 -> pi(0)pi(0), using a data sample of 752 x 10(6) B (B) over bar pairs collected at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. The obtained branching fraction and direct CP asymmetry are B(B -> pi(0)pi(0)) = [1.31 +/- 0.19(stat) +/- 0.19(syst)] x 10(-6) and A(CP) = +0.14 +/- 0.36(stat) +/- 0.10(syst), respectively. The signal significance, including the systematic uncertainty, is 6.4 standard deviations. We combine these results with Belle's earlier measurements of B-0 -> pi(+)pi(-) and B-+/- -> pi(+/-)pi(0) to exclude the CP-violating parameter phi(2) from the range 15.5 degrees < phi(2) < 75.0 degrees at 95% confidence level.

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Title: Measurement of the branching fraction and CP asymmetry in B-0 -> pi(0)pi(0) decays, and an improved constraint on phi(2)
Creators - without role: T. Julius - University of Melbourne
M. E. Sevior - University of Melbourne
G. B. Mohanty - Tata Institute of Fundamental Research
I. Adachi - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
H. Aihara - The University of Tokyo
S. Al Said - King Abdulaziz University
D. M. Asner - Pacific Northwest Natl Lab, Richland, WA 99352 USA
V. Aulchenko - Siberian Branch of the Russian Academy of Sciences
T. Aushev - Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Moscow Region, Russia
R. Ayad - University of Tabuk
V. Babu - Tata Institute of Fundamental Research
I. Badhrees - King Abdulaziz City Sci & Technol, Riyadh 11442, Saudi Arabia
A. M. Bakich - University of Sydney
V. Bansal - Pacific Northwest Natl Lab, Richland, WA 99352 USA
E. Barberio - University of Melbourne
M. Barrett - University of Hawaii System
M. Berger - Meyer
V. Bhardwaj - Indian Inst Sci Educ & Res Mohali, Sas Nagar 140306, India
B. Bhuyan - Indian Institute of Technology Guwahati
J. Biswal - J Stefan Inst, Ljubljana 1000, Slovenia
T. Bloomfield - University of Melbourne
A. Bobrov - Siberian Branch of the Russian Academy of Sciences
A. Bondar - Siberian Branch of the Russian Academy of Sciences
G. Bonvicini - Wayne State University
A. Bozek - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
M. Bracko - J Stefan Inst, Ljubljana 1000, Slovenia
T. E. Browder - University of Hawaii System
D. Cervenkov - Charles University
M-C Chang - Fu Jen Catholic University
Y. Chao - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
V. Chekelian - Max
A. Chen - Natl Cent Univ, Chungli 32054, Taiwan
B. G. Cheon - Hanyang University
K. Chilikin - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
K. Cho - Korea Inst Sci & Technol Informat, Daejeon 305806, South Korea
Y. Choi - Sungkyunkwan University
D. Cinabro - Wayne State University
N. Dash - Indian Institute of Technology Bhubaneswar
S. Di Carlo - Wayne State University
Z. Dolezal - Charles University
D. Dossett - University of Melbourne
Z. Drasal - Charles University
D. Dutta - Tata Institute of Fundamental Research
S. Eidelman - Siberian Branch of the Russian Academy of Sciences
H. Farhat - Wayne State University
J. E. Fast - Pacific Northwest Natl Lab, Richland, WA 99352 USA
T. Ferber - DESY, D-22607 Hamburg, Germany
B. G. Fulsom - Pacific Northwest Natl Lab, Richland, WA 99352 USA
V. Gaur - Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
N. Gabyshev - Siberian Branch of the Russian Academy of Sciences
A. Garmash - Siberian Branch of the Russian Academy of Sciences
R. Gillard - Wayne State University
P. Goldenzweig - Karlsruher Inst Technol, Inst Expt Kernphys, D-76131 Karlsruhe, Germany
J. Haba - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
T. Hara - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
K. Hayasaka - Niigata University
H. Hayashii - Nara Womens Univ, Nara 6308506, Japan
W-S Hou - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
C-L Hsu - University of Melbourne
T. Iijima - Nagoya University
K. Inami - Nagoya University
A. Ishikawa - Tohoku University
R. Itoh - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
Y. Iwasaki - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
W. W. Jacobs - Indiana University Bloomington
I. Jaegle - Univ Florida, Gainesville, FL 32611 USA
Y. Jin - The University of Tokyo
D. Joffe - Kennesaw State University
K. K. Joo - Chonnam Natl Univ, Kwangju 660701, South Korea
J. Kahn - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
G. Karyan - DESY, D-22607 Hamburg, Germany
P. Katrenko - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
T. Kawasaki - Niigata University
C. Kiesling - Max
D. Y. Kim - Soongsil University
H. J. Kim - Kyungpook Natl Univ, Daegu 702701, South Korea
J. B. Kim - University of Seoul
K. T. Kim - University of Seoul
M. J. Kim - Kyungpook Natl Univ, Daegu 702701, South Korea
S. H. Kim - Hanyang University
Y. J. Kim - Korea Inst Sci & Technol Informat, Daejeon 305806, South Korea
K. Kinoshita - University of Cincinnati
P. Kodys - Charles University
S. Korpar - J Stefan Inst, Ljubljana 1000, Slovenia
D. Kotchetkov - University of Hawaii System
P. Krizan - J Stefan Inst, Ljubljana 1000, Slovenia
P. Krokovny - Siberian Branch of the Russian Academy of Sciences
J. F. Krohn - University of Melbourne
T. Kuhr - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
R. Kulasiri - Kennesaw State University
A. Kuzmin - Siberian Branch of the Russian Academy of Sciences
Y-J Kwon - Yonsei University
J. S. Lange - University of Giessen
I. S. Lee - Hanyang University
C. H. Li - University of Melbourne
L. Li - Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
Y. Li - Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
L. Li Gioi - Max
J. Libby - Indian Institute of Technology Madras
D. Liventsev - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
T. Luo - University of Pittsburgh
J. MacNaughton - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
M. Masuda - The University of Tokyo
T. Matsuda - University of Miyazaki
M. Merola - INFN Sez Napoli, I-80126 Naples, Italy
K. Miyabayashi - Nara Womens Univ, Nara 6308506, Japan
H. Miyata - Niigata University
R. Mizuk - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
H. K. Moon - University of Seoul
T. Mori - Nagoya University
R. Mussa - INFN Sez Torino, I-10125 Turin, Italy
E. Nakano - Osaka City University
M. Nakao - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
T. Nanut - J Stefan Inst, Ljubljana 1000, Slovenia
K. J. Nath - Indian Institute of Technology Guwahati
Z. Natkaniec - H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
M. Nayak - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
N. K. Nisar - University of Pittsburgh
S. Nishida - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
S. Ogawa - Toho University
H. Ono - Nippon Dent Univ, Niigata 9518580, Japan
P. Pakhlov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
G. Pakhlova - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
B. Pal - University of Cincinnati
S. Pardi - INFN Sez Napoli, I-80126 Naples, Italy
C-S Park - Yonsei University
H. Park - Kyungpook Natl Univ, Daegu 702701, South Korea
L. Pesantez - University of Bonn
R. Pestotnik - J Stefan Inst, Ljubljana 1000, Slovenia
L. E. Piilonen - Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
C. Pulvermacher - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
M. Ritter - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
H. Sahoo - University of Hawaii System
Y. Sakai - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
M. Salehi - Ludwig Maximilians Univ Munchen, D-80539 Munich, Germany
S. Sandilya - University of Cincinnati
L. Santelj - High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan
T. Sanuki - Tohoku University
Y. Sato - Nagoya University
V. Savinov - University of Pittsburgh
O. Schneider - Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland
G. Schnell - University of the Basque Country
C. Schwanda - Inst High Energy Phys, A-1050 Vienna, Austria
A. J. Schwartz - University of Cincinnati
Y. Seino - Niigata University
K. Senyo - Yamagata University
V. Shebalin - Siberian Branch of the Russian Academy of Sciences
T-A Shibata - Tokyo Institute of Technology
J-G. Shiu - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
B. Shwartz - Siberian Branch of the Russian Academy of Sciences
A. Sokolov - Inst High Energy Phys, Protvino 142281, Russia
E. Solovieva - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
M. Staric - J Stefan Inst, Ljubljana 1000, Slovenia
T. Sumiyoshi - Tokyo Metropolitan University
U. Tamponi - INFN Sez Torino, I-10125 Turin, Italy
K. Tanida - Japan Atom Energy Agcy, Adv Sci Res Ctr, Naka, Ibaraki 3191195, Japan
F. Tenchini - University of Melbourne
K. Trabelsi - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
M. Uchida - Tokyo Institute of Technology
S. Uehara - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
T. Uglov - Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia
Y. Unno - Hanyang University
S. Uno - SOKENDAI Grad Univ Adv Studies, Hayama 2400193, Japan
P. Urquijo - University of Melbourne
Y. Usov - Siberian Branch of the Russian Academy of Sciences
C. Van Hulse - University of the Basque Country
G. Varner - University of Hawaii System
K. E. Varvell - University of Sydney
A. Vossen - Indiana University Bloomington
E. Waheed - University of Melbourne
C. H. Wang - Natl United Univ, Miaoli 36003, Taiwan
M-Z Wang - Natl Taiwan Univ, Dept Phys, Taipei 10617, Taiwan
P. Wang - Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
M. Watanabe - Niigata University
Y. Watanabe - Kanagawa University
E. Widmann - Meyer
K. M. Williams - Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
E. Won - University of Seoul
Y. Yamashita - Nippon Dent Univ, Niigata 9518580, Japan
H. Ye - DESY, D-22607 Hamburg, Germany
C. Z. Yuan - Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
Y. Yusa - Niigata University
Z. P. Zhang - Univ Sci & Technol China, Hefei 230026, Anhui, Peoples R China
V. Zhilich - Siberian Branch of the Russian Academy of Sciences
V. Zhulanov - Siberian Branch of the Russian Academy of Sciences
A. Zupanc - J Stefan Inst, Ljubljana 1000, Slovenia
Belle Collaboration
Publication Details: Physical review. D, Vol.96(3)
Publisher: Amer Physical Soc
Number of pages: 8
Grant note: Ministry of Science and Technology of Taiwan; Ministry of Science and Technology, Taiwan Ikerbasque U.S. Department of Energy; United States Department of Energy (DOE) Department of Science and Technology of India; Department of Science & Technology (India) Ministry of Education, Culture, Sports, Science, and Technology (MEXT) of Japan; Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Istituto Nazionale di Fisica Nucleare of Italy; Istituto Nazionale di Fisica Nucleare (INFN) Ministry of Education and Science of the Russian Federation; Ministry of Education and Science, Russian Federation Australian Research Council Deutsche Forschungsgemeinschaft; German Research Foundation (DFG) Radiation Science Research Institute P 26794-N20 / Austrian Science Fund; Austrian Science Fund (FWF) Basque Foundation for Science Polish Ministry of Science and Higher Education; Ministry of Science and Higher Education, Poland Japan Society for the Promotion of Science (JSPS); Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science Ministry of Education Tau-Lepton Physics Research Center of Nagoya University VolkswagenStiftung; Volkswagen Swiss National Science Foundation; Swiss National Science Foundation (SNSF) Foreign Large-size Research Facility Application Supporting project Global Science Experimental Data Hub Center of the Korea Institute of Science and Technology Information LTT17020 / Ministry of Education, Youth and Sports of the Czech Republic; Ministry of Education, Youth & Sports - Czech Republic Chinese Academy of Science Center for Excellence in Particle Physics Excellence Cluster Universe Slovenian Research Agency; Slovenian Research Agency - Slovenia Russian Foundation for Basic Research; Russian Foundation for Basic Research (RFBR); Spanish Government Brain Korea 21-Plus program National Science Foundation; National Science Foundation (NSF) MINECO (Juan de la Cierva), Spain; Spanish Government Carl Zeiss Foundation 10575109; 10775142; 10875115; 11175187; 11475187; 11521505; 11575017 / National Natural Science Foundation of China; National Natural Science Foundation of China (NSFC) 2011-0029457; 2012-0008143; 2014R1A2A2A01005286; 2014R1A2A2A01002734; 2015R1A2A2A01003280; 2015H1A2A1033649; 2016R1D1A1B01010135; 2016K1A3A7A09005603; 2016K1A3A7A09005604; 2016R1D1A1B02012900; 2016K1A3A7A09005606; NRF-2013K1A3A7A06056592 / WCU program of the Ministry of Education, National Research Foundation (NRF) of Korea; Ministry of Education (MOE), Republic of Korea National Science Center; National Science Centre, Poland
Identifiers: 9918890408331
Academic Unit: King Abdulaziz City for Science & Technology; University of Tabuk; King Abdullah University of Science & Technology
Language: English
Resource Type: Journal article