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Search for the rare decay of B+→ℓ+νℓγ with improved hadronic tagging

Physical Review D 2018年第11期98卷 112016-112016页

作者： M. Gelb F. U. Bernlochner P. Goldenzweig F. Metzner I. Adachi H. Aihara S. Al Said D. M. Asner H. Atmacan T. Aushev R. Ayad V. Babu I. Badhrees V. Bansal P. Behera C. Beleño B. Bhuyan J. Biswal A. Bobrov M. Bračko N. Braun L. Cao D. Červenkov V. Chekelian A. Chen B. G. Cheon K. Chilikin K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe N. Dash S. Di Carlo Z. Doležal T. V. Dong S. Eidelman D. Epifanov J. E. Fast T. Ferber A. Frey B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash J. Gemmler A. Giri D. Greenwald J. Haba T. Hara K. Hayasaka H. Hayashii W.-S. Hou K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs S. Jia Y. Jin D. Joffe K. K. Joo J. Kahn A. B. Kaliyar T. Kawasaki H. Kichimi C. Kiesling D. Y. Kim H. J. Kim S. H. Kim P. Kodyš S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny T. Kuhr R. Kulasiri A. Kuzmin Y.-J. Kwon J. S. Lange I. S. Lee J. K. Lee J. Y. Lee S. C. Lee Y. B. Li L. Li Gioi J. Libby D. Liventsev P.-C. Lu M. Lubej T. Luo J. MacNaughton M. Masuda M. Merola K. Miyabayashi H. Miyata R. Mizuk G. B. Mohanty T. Mori M. Mrvar R. Mussa M. Nakao K. J. Nath Z. Natkaniec M. Nayak M. Niiyama N. K. Nisar S. Nishida S. Ogawa P. Pakhlov G. Pakhlova B. Pal S. Pardi S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen V. Popov E. Prencipe M. Prim M. Ritter A. Rostomyan G. Russo D. Sahoo Y. Sakai M. Salehi S. Sandilya L. Santelj T. Sanuki V. Savinov O. Schneider G. Schnell J. Schueler C. Schwanda Y. Seino K. Senyo O. Seon M. E. Sevior C. P. Shen T.-A. Shibata J.-G. Shiu B. Shwartz F. Simon E. Solovieva S. Stanič M. Starič J. F. Strube M. Sumihama T. Sumiyoshi W. Sutcliffe M. Takizawa K. Tanida Y. Tao F. Tenchini M. Uchida T. Uglov Y. Unno S. Uno P. Urquijo R. Van Tonder G. Varner K. E. Varvell B. Wang C. H. Wang M.-Z. Wang P. Wang X. L. Wang M. Watanabe S. Watanuki E. Widmann E. Won H. Yamamoto S. B. Yang H. Ye J. H. Yin C. Z. Yuan Y. Yusa S. Zakharov Z. P. Zhang V. Zhilich V. Zhukova V. Zhulanov Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 University of South Carolina Columbia South Carolina 29208 Moscow Institute of Physics and Technology Moscow Region 141700 Tata Institute of Fundamental Research Mumbai 400005 King Abdulaziz City for Science and Technology Riyadh 11442 Pacific Northwest National Laboratory Richland Washington 99352 Indian Institute of Technology Madras Chennai 600036 II. Physikalisches Institut Georg-August-Universität Göttingen 37073 Göttingen Indian Institute of Technology Guwahati Assam 781039 J. Stefan Institute 1000 Ljubljana Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 University of Maribor 2000 Maribor Faculty of Mathematics and Physics Charles University 121 16 Prague Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Hanyang University Seoul 133-791 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Daejeon 305-806 Gyeongsang National University Chinju 660-701 Sungkyunkwan University Suwon 440-746 Indian Institute of Technology Hyderabad Telangana 502285 Wayne State University Detroit Michigan 48202 Deutsches Elektronen–Synchrotron 22607 Hamburg Indian Institute of Technology Bhubaneswar Satya Nagar 751007 LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay Panjab University Chandigarh 160014 Virginia Polytechnic Institute and State University Blacksburg Virginia 24061 Department of Physics

We present the result of the search for the rare B meson decay of B+→ℓ+νℓγ with ℓ=e,μ. For the search the full data set recorded by the Belle experiment of 711 fb−1 integrated luminosity near the ϒ(4S) resonance is used. Signal candidates are reconstructed for photon energies Eγ larger than 1 GeV using a novel multivariate tagging algorithm. The novel algorithm fully reconstructs the second B meson produced in the collision using hadronic modes and was specifically trained to recognize the signal signature in combination with hadronic tag-side B meson decays. This approach greatly enhances the performance. Background processes that can mimic this signature, mainly charmless semileptonic decays and continuum processes, are suppressed using multivariate methods. The number of signal candidates is determined by analyzing the missing mass squared distribution as inferred from the signal side particles and the kinematic properties of the tag-side B meson. No significant excess over the background-only hypothesis is observed and upper limits on the partial branching fraction ΔB with Eγ>1 GeV individually for electron and muon final states as well as for the average branching fraction of both lepton final states are reported. We find a Bayesian upper limit of ΔB(B+→ℓ+νℓγ)<3.0×10−6 at 90% CL and also report an upper limit on the first inverse moment of the light-cone distribution amplitude of the B meson of λB>0.24 GeV at 90% CL.

关键词： Branching fraction Leptonic, semileptonic & radiative decays Rare decays

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Measurements of the branching fractions B(B−→Λ¯c−Ξc′0), B(B−→Λ¯c−Ξc(2645)0) and B(B−→Λ¯c−Ξc(2790)0)

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Physical Review D 2019年第11期100卷 112010-112010页

作者： Y. Li Y. B. Li C. P. Shen I. Adachi H. Aihara D. M. Asner H. Atmacan V. Aulchenko R. Ayad V. Babu I. Badhrees A. M. Bakich P. Behera T. Bilka J. Biswal A. Bobrov G. Bonvicini A. Bozek M. Bračko T. E. Browder M. Campajola L. Cao D. Červenkov P. Chang A. Chen B. G. Cheon K. Chilikin H. E. Cho K. Cho S.-K. Choi Y. Choi D. Cinabro S. Cunliffe G. De Nardo F. Di Capua S. Di Carlo Z. Doležal T. V. Dong S. Eidelman J. E. Fast T. Ferber D. Ferlewicz B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash A. Giri P. Goldenzweig B. Golob B. Grube T. Hara K. Hayasaka H. Hayashii W.-S. Hou C.-L. Hsu T. Iijima K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs S. Jia Y. Jin K. K. Joo K. H. Kang G. Karyan H. Kichimi C. H. Kim D. Y. Kim S. H. Kim K. Kinoshita P. Kodyš S. Korpar R. Kroeger P. Krokovny T. Kuhr R. Kulasiri A. Kuzmin Y.-J. Kwon K. Lalwani J. S. Lange I. S. Lee S. C. Lee P. Lewis C. H. Li L. K. Li L. Li Gioi J. Libby K. Lieret D. Liventsev C. MacQueen M. Masuda T. Matsuda D. Matvienko M. Merola H. Miyata R. Mizuk R. Mussa M. Nakao K. J. Nath M. Nayak M. Niiyama N. K. Nisar S. Nishida K. Nishimura S. Ogawa H. Ono Y. Onuki P. Oskin P. Pakhlov G. Pakhlova T. Pang S. Pardi H. Park S.-H. Park S. Patra S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen T. Podobnik V. Popov E. Prencipe M. T. Prim M. Röhrken A. Rostomyan N. Rout G. Russo D. Sahoo Y. Sakai S. Sandilya L. Santelj V. Savinov O. Schneider G. Schnell C. Schwanda Y. Seino K. Senyo M. E. Sevior J.-G. Shiu B. Shwartz A. Sokolov E. Solovieva S. Stanič M. Starič Z. S. Stottler M. Sumihama T. Sumiyoshi W. Sutcliffe M. Takizawa K. Tanida F. Tenchini K. Trabelsi M. Uchida T. Uglov Y. Unno S. Uno R. Van Tonder G. Varner A. Vinokurova C. H. Wang M.-Z. Wang X. L. Wang M. Watanabe E. Won S. B. Yang H. Ye J. Yelton J. H. Yin C. Z. Yuan Z. P. Zhang V. Zhilich V. Zhukova V. Zhulanov Beihang University Beijing 100191 Peking University Beijing 100871 Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics Fudan University Shanghai 200443 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Brookhaven National Laboratory Upton New York 11973 University of South Carolina Columbia South Carolina 29208 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Deutsches Elektronen–Synchrotron 22607 Hamburg King Abdulaziz City for Science and Technology Riyadh 11442 School of Physics University of Sydney New South Wales 2006 Indian Institute of Technology Madras Chennai 600036 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana Wayne State University Detroit Michigan 48202 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor University of Hawaii Honolulu Hawaii 96822 INFN—Sezione di Napoli 80126 Napoli Università di Napoli Federico II 80055 Napoli Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe Department of Physics National Taiwan University Taipei 10617 National Central University Chung-li 32054 Department of Physics and Institute of Natural Sciences Hanyang University Seoul 04763 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Daejeon 34141 Gyeongsang National University Jinju 52828 Sungkyunkwan University Suwon 16419 LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay 91898 Pacific Northwest National Laboratory Richland Washington 99352 School of Physics University of Melbourne Victoria 3010 Panjab Univers

Using the data sample of 711 fb−1 of ϒ(4S) on-resonance data taken by the Belle detector at the KEKB asymmetric-energy electron-positron collider, we present the first measurements of branching fractions of the decays B−→Λ¯c−Ξc′0, B−→Λ¯c−Ξc(2645)0, and B−→Λ¯c−Ξc(2790)0. The signal yields for these decays are extracted from the recoil mass spectrum of the system recoiling against Λ¯c− baryons in selected B− candidates. The branching fraction of B−→Λ¯c−Ξc(2790)0 is measured to be (1.1±0.4±0.2)×10−3, where the first uncertainty is statistical and the second is systematic. The 90% credibility level upper limits on B(B−→Λ¯c−Ξc′0) and B(B−→Λ¯c−Ξc(2645)0) are determined to be 6.5×10−4 and 7.9×10−4, respectively.

关键词： Branching fraction Hadronic decays Bottom mesons

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Measurement of the branching fraction and time-dependent CP asymmetry for B0→J/ψπ0 decays

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Physical Review D 2018年第11期98卷 112008-112008页

作者： B. Pal A. J. Schwartz H. Aihara S. Al Said D. M. Asner H. Atmacan V. Aulchenko T. Aushev R. Ayad I. Badhrees S. Bahinipati V. Bansal P. Behera C. Beleño B. Bhuyan T. Bilka J. Biswal A. Bozek M. Bračko L. Cao D. Červenkov V. Chekelian A. Chen B. G. Cheon K. Chilikin K. Cho Y. Choi S. Choudhury D. Cinabro S. Cunliffe N. Dash S. Di Carlo Z. Doležal S. Eidelman D. Epifanov J. E. Fast B. G. Fulsom R. Garg V. Gaur A. Garmash M. Gelb A. Giri P. Goldenzweig B. Golob Y. Guan T. Hara K. Hayasaka H. Hayashii T. Higuchi W.-S. Hou C.-L. Hsu K. Inami A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs S. Jia D. Joffe T. Julius G. Karyan D. Y. Kim K. T. Kim S. H. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny R. Kulasiri R. Kumar A. Kuzmin Y.-J. Kwon K. Lalwani S. C. Lee L. K. Li Y. B. Li L. Li Gioi J. Libby P.-C. Lu M. Masuda T. Matsuda D. Matvienko M. Merola K. Miyabayashi H. Miyata R. Mizuk G. B. Mohanty T. Mori E. Nakano M. Nakao K. J. Nath Z. Natkaniec M. Nayak S. Nishida S. Ogawa H. Ono G. Pakhlova S. Pardi H. Park S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen V. Popov E. Prencipe M. V. Purohit M. Ritter G. Russo D. Sahoo Y. Sakai S. Sandilya L. Santelj T. Sanuki V. Savinov O. Schneider G. Schnell J. Schueler C. Schwanda Y. Seino K. Senyo O. Seon M. E. Sevior T.-A. Shibata F. Simon A. Sokolov E. Solovieva M. Starič M. Sumihama T. Sumiyoshi M. Takizawa U. Tamponi K. Tanida Y. Tao F. Tenchini K. Trabelsi M. Uchida S. Uehara T. Uglov Y. Unno S. Uno S. E. Vahsen R. Van Tonder G. Varner K. E. Varvell V. Vorobyev B. Wang C. H. Wang M.-Z. Wang P. Wang X. L. Wang E. Widmann E. Won J. Yelton J. H. Yin Z. P. Zhang V. Zhilich V. Zhukova Brookhaven National Laboratory Upton New York 11973 University of Cincinnati Cincinnati Ohio 45221 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 University of South Carolina Columbia South Carolina 29208 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 Moscow Institute of Physics and Technology Moscow Region 141700 King Abdulaziz City for Science and Technology Riyadh 11442 Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Pacific Northwest National Laboratory Richland Washington 99352 Indian Institute of Technology Madras Chennai 600036 II. Physikalisches Institut Georg-August-Universität Göttingen 37073 Göttingen Indian Institute of Technology Guwahati Assam 781039 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Hanyang University Seoul 133-791 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Daejeon 305-806 Sungkyunkwan University Suwon 440-746 Indian Institute of Technology Hyderabad Telangana 502285 Wayne State University Detroit Michigan 48202 Deutsches Elektronen–Synchrotron 22607 Hamburg LAL Université Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay Panjab University Chandigarh 160014 Virginia Polytechnic Institute and State University Blacksburg Virginia 24061 Faculty of Mathematics and Physics University of Ljubljana 1000 Ljubljana Indiana University Bloomington Indiana 47408 High Energy Accelerator Res

We measure the branching fraction and time-dependent CP-violating asymmetry for B0→J/ψπ0 decays using a data sample of 711 fb−1 collected on the ϒ(4S) resonance by the Belle experiment running at the KEKB e+e− collider. The branching fraction is measured to be B(B0→J/ψπ0)=[1.62±0.11(stat)±0.06(syst)]×10−5, which is the most precise measurement to date. The measured CP asymmetry parameters are S=−0.59±0.19(stat)±0.03(syst) and A=−0.15±0.14(stat)+0.04−0.03(syst). The mixing-induced CP asymmetry (S) differs from the case of no CP violation by 3.0 standard deviations, and the direct CP asymmetry (A) is consistent with zero.

关键词： Bottom mesons CP violation

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Measurement of branching fraction and final-state asymmetry for the B¯0→KS0K∓π± decay

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Physical Review D 2019年第1期100卷 011101(R)-011101(R)页

作者： Y.-T. Lai I. Adachi H. Aihara S. Al Said D. M. Asner H. Atmacan V. Aulchenko T. Aushev V. Babu I. Badhrees A. M. Bakich V. Bansal P. Behera C. Beleño B. Bhuyan T. Bilka J. Biswal A. Bobrov A. Bozek M. Bračko L. Cao D. Červenkov P. Chang V. Chekelian A. Chen B. G. Cheon K. Chilikin K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe N. Dash S. Di Carlo Z. Doležal T. V. Dong S. Eidelman D. Epifanov J. E. Fast A. Frey B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash M. Gelb A. Giri P. Goldenzweig D. Greenwald Y. Guan J. Haba T. Hara K. Hayasaka H. Hayashii W.-S. Hou C.-L. Hsu K. Huang T. Iijima K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki S. Jia Y. Jin D. Joffe A. B. Kaliyar G. Karyan T. Kawasaki H. Kichimi C. Kiesling D. Y. Kim H. J. Kim J. B. Kim S. H. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny T. Kuhr R. Kulasiri R. Kumar A. Kuzmin Y.-J. Kwon K. Lalwani J. S. Lange I. S. Lee J. K. Lee J. Y. Lee S. C. Lee C. H. Li L. K. Li Y. B. Li L. Li Gioi J. Libby Z. Liptak D. Liventsev P.-C. Lu M. Lubej T. Luo J. MacNaughton M. Masuda T. Matsuda D. Matvienko M. Merola K. Miyabayashi R. Mizuk G. B. Mohanty T. Mori M. Mrvar R. Mussa E. Nakano M. Nakao K. J. Nath M. Nayak N. K. Nisar S. Nishida S. Ogawa G. Pakhlova B. Pal S. Pardi H. Park S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen V. Popov E. Prencipe A. Rabusov M. Ritter A. Rostomyan G. Russo Y. Sakai M. Salehi S. Sandilya L. Santelj T. Sanuki V. Savinov O. Schneider G. Schnell C. Schwanda Y. Seino K. Senyo O. Seon M. E. Sevior C. P. Shen T.-A. Shibata J.-G. Shiu E. Solovieva M. Starič M. Sumihama T. Sumiyoshi W. Sutcliffe M. Takizawa K. Tanida Y. Tao F. Tenchini M. Uchida T. Uglov Y. Unno S. Uno P. Urquijo Y. Usov R. Van Tonder G. Varner K. E. Varvell V. Vorobyev B. Wang C. H. Wang M.-Z. Wang P. Wang X. L. Wang E. Widmann E. Won H. Yamamoto S. B. Yang H. Ye C. Z. Yuan Y. Yusa Z. P. Zhang V. Zhilich V. Zhukova V. Zhulanov High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 University of South Carolina Columbia South Carolina 29208 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 Moscow Institute of Physics and Technology Moscow Region 141700 Tata Institute of Fundamental Research Mumbai 400005 King Abdulaziz City for Science and Technology Riyadh 11442 School of Physics University of Sydney New South Wales 2006 Pacific Northwest National Laboratory Richland Washington 99352 Indian Institute of Technology Madras Chennai 600036 II. Physikalisches Institut Georg-August-Universität Göttingen 37073 Göttingen Indian Institute of Technology Guwahati Assam 781039 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe Department of Physics National Taiwan University Taipei 10617 Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Hanyang University Seoul 133-791 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Daejeon 305-806 Gyeongsang National University Chinju 660-701 Sungkyunkwan University Suwon 440-746 Indian Institute of Technology Hyderabad Telangana 502285 Wayne State University Detroit Michigan 48202 Deutsches Elektronen–Synchrotron 22607 Hamburg Indian Institute of Technology Bhubaneswar Satya Nagar 751007 LAL Univ. Paris

We report a measurement of the branching fraction and final-state asymmetry for the B¯0→KS0K∓π± decays. The analysis is based on a data sample of 711 fb−1 collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We obtain a branching fraction of (3.60±0.33±0.15)×10−6 and a final-state asymmetry of (−8.5±8.9±0.2)%, where the first uncertainties are statistical and the second are systematic. Hints of peaking structures are found in the differential branching fractions measured as functions of Dalitz variables.

关键词： Branching fraction Hadronic decays Rare decays Hadrons Mesons Lepton colliders Particle data analysis Particle decays Particle detectors

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Measurement of the charm-mixing parameter yCP in D0→KS0ω decays at Belle

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Physical Review D 2020年第7期102卷 071102(R)-071102(R)页

作者： M. Nayak D. Cinabro I. Adachi H. Aihara S. Al Said D. M. Asner H. Atmacan T. Aushev R. Ayad V. Babu S. Bahinipati P. Behera C. Beleño J. Bennett V. Bhardwaj B. Bhuyan J. Biswal G. Bonvicini A. Bozek M. Bračko T. E. Browder M. Campajola L. Cao D. Červenkov A. Chen B. G. Cheon K. Chilikin H. E. Cho K. Cho S.-K. Choi Y. Choi S. Choudhury S. Cunliffe N. Dash G. De Nardo F. Di Capua S. Di Carlo Z. Doležal T. V. Dong S. Eidelman D. Epifanov J. E. Fast T. Ferber D. Ferlewicz B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash A. Giri P. Goldenzweig B. Golob O. Grzymkowska T. Hara K. Hayasaka H. Hayashii W.-S. Hou C.-L. Hsu K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs H. B. Jeon S. Jia Y. Jin K. K. Joo A. B. Kaliyar K. H. Kang G. Karyan T. Kawasaki C. Kiesling B. H. Kim C. H. Kim D. Y. Kim S. H. Kim S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny T. Kuhr R. Kumar Y.-J. Kwon S. C. Lee L. K. Li Y. B. Li L. Li Gioi J. Libby K. Lieret D. Liventsev M. Masuda T. Matsuda D. Matvienko M. Merola K. Miyabayashi R. Mizuk G. B. Mohanty T. J. Moon R. Mussa M. Nakao Z. Natkaniec M. Niiyama N. K. Nisar S. Nishida K. Nishimura K. Ogawa S. Ogawa H. Ono P. Pakhlov G. Pakhlova S. Pardi H. Park S.-H. Park S. Patra S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen T. Podobnik V. Popov E. Prencipe M. T. Prim P. K. Resmi M. Ritter A. Rostomyan N. Rout G. Russo D. Sahoo Y. Sakai S. Sandilya T. Sanuki V. Savinov O. Schneider G. Schnell J. Schueler C. Schwanda A. J. Schwartz Y. Seino K. Senyo M. E. Sevior V. Shebalin J.-G. Shiu A. Sokolov E. Solovieva S. Stanič M. Starič Z. S. Stottler J. F. Strube T. Sumiyoshi M. Takizawa U. Tamponi K. Tanida F. Tenchini K. Trabelsi M. Uchida T. Uglov Y. Unno S. Uno P. Urquijo Y. Ushiroda Y. Usov R. Van Tonder G. Varner K. E. Varvell A. Vinokurova A. Vossen C. H. Wang M.-Z. Wang P. Wang X. L. Wang M. Watanabe E. Won X. Xu S. B. Yang H. Ye Z. P. Zhang V. Zhilich V. Zhukova V. Zhulanov School of Physics and Astronomy Tel Aviv University Tel Aviv 69978 Wayne State University Detroit Michigan 48202 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 University of South Carolina Columbia South Carolina 29208 Moscow Institute of Physics and Technology Moscow Region 141700 Deutsches Elektronen-Synchrotron 22607 Hamburg Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Indian Institute of Technology Madras Chennai 600036 II. Physikalisches Institut Georg-August-Universität Göttingen 37073 Göttingen University of Mississippi University Mississippi 38677 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 Indian Institute of Technology Guwahati Assam 781039 J. Stefan Institute 1000 Ljubljana H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor University of Hawaii Honolulu Hawaii 96822 INFN-Sezione di Napoli 80126 Napoli Università di Napoli Federico II 80055 Napoli Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe Faculty of Mathematics and Physics Charles University 121 16 Prague National Central University Chung-li 32054 Department of Physics and Institute of Natural Sciences Hanyang University Seoul 04763 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Daejeon 34141 Gyeongsang National University Jinju 52828 Sungkyunkwan University Suwon 16419 Indian Institute of Technology Hyderabad Telangana 502285 LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay 91898 Key Laboratory of Nuclear Phys

We report the first measurement of the charm-mixing parameter yCP in D0 decays to the CP-odd final state KS0ω. The study uses the full Belle e+e− annihilation data sample of 976 fb−1 taken at or near the ϒ(4S) centre-of-mass energy. We find yCP=(0.96±0.91±0.62−0.00+0.17)%, where the first uncertainty is statistical, the second is systematic due to event selection and background, and the last is due to possible presence of CP-even decays in the data sample.

关键词： Flavor changing neutral currents Particle phenomena Mesons Lepton colliders Particle data analysis Particle detectors Particle mixing & oscillations

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Search for Ω(2012)→KΞ(1530)→KπΞ at Belle

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Physical Review D 2019年第3期100卷 032006-032006页

作者： S. Jia C. P. Shen I. Adachi J. K. Ahn H. Aihara S. Al Said D. M. Asner T. Aushev R. Ayad V. Babu S. Bahinipati A. M. Bakich P. Behera C. Beleño J. Bennett M. Berger V. Bhardwaj T. Bilka J. Biswal A. Bobrov A. Bozek M. Bračko T. E. Browder M. Campajola L. Cao D. Červenkov V. Chekelian A. Chen B. G. Cheon K. Chilikin H. E. Cho K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe N. Dash G. De Nardo F. Di Capua S. Di Carlo Z. Doležal T. V. Dong S. Eidelman D. Epifanov J. E. Fast B. G. Fulsom V. Gaur N. Gabyshev A. Garmash A. Giri P. Goldenzweig B. Golob O. Grzymkowska O. Hartbrich K. Hayasaka H. Hayashii W.-S. Hou K. Huang T. Iijima K. Inami G. Inguglia A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs Y. Jin D. Joffe K. K. Joo A. B. Kaliyar K. H. Kang G. Karyan Y. Kato T. Kawasaki H. Kichimi D. Y. Kim H. J. Kim K. T. Kim S. H. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny R. Kumar A. Kuzmin Y.-J. Kwon J. S. Lange I. S. Lee J. K. Lee J. Y. Lee S. C. Lee L. K. Li Y. B. Li L. Li Gioi J. Libby K. Lieret D. Liventsev P.-C. Lu J. MacNaughton C. MacQueen M. Masuda T. Matsuda D. Matvienko J. T. McNeil M. Merola H. Miyata R. Mizuk T. Mori R. Mussa T. Nakano M. Nakao K. J. Nath M. Nayak M. Niiyama N. K. Nisar S. Nishida K. Nishimura K. Ogawa S. Ogawa H. Ono Y. Onuki W. Ostrowicz P. Pakhlov G. Pakhlova B. Pal T. Pang S. Pardi S.-H. Park S. Patra S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen V. Popov E. Prencipe M. Ritter A. Rostomyan G. Russo Y. Sakai M. Salehi S. Sandilya L. Santelj T. Sanuki V. Savinov O. Schneider G. Schnell J. Schueler C. Schwanda Y. Seino K. Senyo O. Seon M. E. Sevior V. Shebalin J.-G. Shiu A. Sokolov E. Solovieva M. Starič J. F. Strube M. Sumihama T. Sumiyoshi W. Sutcliffe M. Takizawa U. Tamponi K. Tanida F. Tenchini M. Uchida T. Uglov Y. Unno S. Uno P. Urquijo Y. Usov S. E. Vahsen R. Van Tonder G. Varner A. Vinokurova A. Vossen B. Wang C. H. Wang M.-Z. Wang P. Wang E. Won S. B. Yang H. Ye J. Yelton J. H. Yin C. Z. Yuan Y. Yusa Z. P. Zhang V. Zhilich Beihang University Beijing 100191 Key Laboratory of Nuclear Physics and Ion-beam Application (MOE) and Institute of Modern Physics Fudan University Shanghai 200443 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Korea University Seoul 136-713 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 Moscow Institute of Physics and Technology Moscow Region 141700 Deutsches Elektronen–Synchrotron 22607 Hamburg Indian Institute of Technology Bhubaneswar Satya Nagar 751007 School of Physics University of Sydney New South Wales 2006 Indian Institute of Technology Madras Chennai 600036 II. Physikalisches Institut Georg-August-Universität Göttingen 37073 Göttingen University of Mississippi University Mississippi 38677 Stefan Meyer Institute for Subatomic Physics Vienna 1090 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor University of Hawaii Honolulu Hawaii 96822 INFN—Sezione di Napoli 80126 Napoli Università di Napoli Federico II 80055 Napoli Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Hanyang University Seoul 133-791 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Daejeon 305-806 Gyeongsang National University Chinju 660-701 Su

Using data samples of e+e− collisions collected at the ϒ(1S), ϒ(2S), and ϒ(3S) resonances with the Belle detector, we search for the three-body decay of the Ω(2012) baryon to KπΞ. This decay is predicted to dominate for models describing the Ω(2012) as a KΞ(1530) molecule. No significant Ω(2012) signals are observed in the studied channels, and 90% credibility level upper limits on the ratios of the branching fractions relative to KΞ decay modes are obtained.

关键词： Hadronic decays Baryons Bottom mesons Exotic baryons

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Measurement of the CKM matrix element |Vcb| from B0→D*−ℓ+νℓ at Belle

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Physical Review D 2019年第5期100卷 052007-052007页

作者： E. Waheed P. Urquijo D. Ferlewicz I. Adachi K. Adamczyk H. Aihara S. Al Said D. M. Asner H. Atmacan T. Aushev R. Ayad V. Babu I. Badhrees V. Bansal P. Behera C. Beleño F. Bernlochner B. Bhuyan T. Bilka J. Biswal A. Bobrov G. Bonvicini A. Bozek M. Bračko T. E. Browder M. Campajola D. Červenkov P. Chang V. Chekelian A. Chen B. G. Cheon K. Chilikin H. E. Cho K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe S. Di Carlo Z. Doležal T. V. Dong D. Dossett S. Eidelman D. Epifanov J. E. Fast B. G. Fulsom R. Garg V. Gaur A. Garmash A. Giri P. Goldenzweig B. Golob O. Grzymkowska J. Haba T. Hara K. Hayasaka H. Hayashii M. T. Hedges W.-S. Hou C.-L. Hsu T. Iijima K. Inami G. Inguglia A. Ishikawa M. Iwasaki Y. Iwasaki W. W. Jacobs H. B. Jeon S. Jia Y. Jin D. Joffe K. K. Joo J. Kahn A. B. Kaliyar G. Karyan T. Kawasaki C. H. Kim D. Y. Kim K. T. Kim S. H. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov P. Križan R. Kroeger P. Krokovny T. Kuhr R. Kulasiri A. Kuzmin Y.-J. Kwon J. S. Lange J. Y. Lee S. C. Lee C. H. Li L. K. Li Y. B. Li L. Li Gioi J. Libby K. Lieret D. Liventsev P.-C. Lu T. Luo J. MacNaughton M. Masuda D. Matvienko M. Merola F. Metzner K. Miyabayashi H. Miyata R. Mizuk G. B. Mohanty T. Mori R. Mussa I. Nakamura M. Nakao K. J. Nath Z. Natkaniec M. Nayak M. Niiyama N. K. Nisar S. Nishida K. Nishimura S. Ogawa H. Ono P. Pakhlov G. Pakhlova B. Pal S. Pardi H. Park S.-H. Park S. Paul R. Pestotnik L. E. Piilonen V. Popov E. Prencipe M. Prim A. Rostomyan G. Russo Y. Sakai M. Salehi S. Sandilya T. Sanuki V. Savinov O. Schneider G. Schnell J. Schueler C. Schwanda Y. Seino K. Senyo O. Seon M. E. Sevior V. Shebalin C. P. Shen J.-G. Shiu B. Shwartz F. Simon A. Sokolov E. Solovieva S. Stanič M. Starič Z. S. Stottler J. F. Strube T. Sumiyoshi M. Takizawa K. Tanida F. Tenchini K. Trabelsi M. Uchida T. Uglov Y. Unno S. Uno Y. Usov G. Varner K. E. Varvell A. Vinokurova A. Vossen C. H. Wang M.-Z. Wang P. Wang E. Won S. B. Yang H. Ye Y. Yusa Z. P. Zhang V. Zhilich V. Zhukova School of Physics University of Melbourne Victoria 3010 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 University of South Carolina Columbia South Carolina 29208 Moscow Institute of Physics and Technology Moscow Region 141700 Tata Institute of Fundamental Research Mumbai 400005 King Abdulaziz City for Science and Technology Riyadh 11442 Pacific Northwest National Laboratory Richland Washington 99352 Indian Institute of Technology Madras Chennai 600036 II. Physikalisches Institut Georg-August-Universität Göttingen 37073 Göttingen University of Bonn 53115 Bonn Indian Institute of Technology Guwahati Assam 781039 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 Wayne State University Detroit Michigan 48202 University of Maribor 2000 Maribor University of Hawaii Honolulu Hawaii 96822 INFN—Sezione di Napoli 80126 Napoli Università di Napoli Federico II 80055 Napoli Department of Physics National Taiwan University Taipei 10617 Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Hanyang University Seoul 133-791 P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Korea Institute of Science and Technology Information Daejeon 305-806 Gyeongsang National University Chinju 660-701 Sungkyunkwan University Suwon 440-746 Indian Institute of Technology Hyderabad Telangana 502285 Deutsches Elektronen–Synchrotron 22607 Hamburg LAL Univ. Paris-Sud

We present a new measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| from B0→D*−ℓ+νℓ decays, reconstructed with the full Belle data set of 711 fb−1 integrated luminosity. Two form factor parametrizations, originally conceived by the Caprini-Lellouch-Neubert (CLN) and the Boyd, Grinstein and Lebed (BGL) groups, are used to extract the product F(1)ηEW|Vcb| and the decay form factors, where F(1) is the normalization factor and ηEW is a small electroweak correction. In the CLN parametrization we find F(1)ηEW|Vcb|=(35.06±0.15±0.56)×10−3, ρ2=1.106±0.031±0.007, R1(1)=1.229±0.028±0.009, R2(1)=0.852±0.021±0.006. For the BGL parametrization we obtain F(1)ηEW|Vcb|=(34.93±0.23±0.59)×10−3, which is consistent with the world average when correcting for F(1)ηEW. The branching fraction of B0→D*−ℓ+νℓ is measured to be B(B0→D*−ℓ+νℓ)=(4.90±0.02±0.16)%. We also present a new test of lepton flavor universality violation in semileptonic B decays, B(B0→D*−e+ν)B(B0→D*−μ+ν)=1.01±0.01±0.03. The errors quoted correspond to the statistical and systematic uncertainties, respectively. This is the most precise measurement of F(1)ηEW|Vcb| and form factors to date and the first experimental study of the BGL form factor parametrization in an experimental measurement.

关键词： Electroweak radiative corrections Flavor changing neutral currents Form factors Particle interactions W & Z bosons

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

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Physical Review D 2019年第1期100卷 012001-012001页

作者： K. Chilikin I. Adachi D. M. Asner V. Aulchenko T. Aushev R. Ayad V. Babu I. Badhrees V. Bansal P. Behera C. Beleño M. Berger V. Bhardwaj T. Bilka J. Biswal A. Bobrov A. Bondar A. Bozek M. Bračko T. E. Browder M. Campajola L. Cao D. Červenkov V. Chekelian A. Chen B. G. Cheon K. Cho S.-K. Choi Y. Choi D. Cinabro S. Cunliffe S. Di Carlo Z. Doležal T. V. Dong S. Eidelman D. Epifanov J. E. Fast T. Ferber B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash M. Gelb A. Giri P. Goldenzweig O. Grzymkowska J. Haba T. Hara K. Hayasaka H. Hayashii W.-S. Hou C.-L. Hsu K. Inami A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs S. Jia Y. Jin D. Joffe K. K. Joo T. Julius A. B. Kaliyar G. Karyan Y. Kato C. Kiesling C. H. Kim D. Y. Kim S. H. Kim K. Kinoshita P. Kodyš S. Korpar D. Kotchetkov R. Kroeger P. Krokovny R. Kulasiri R. Kumar Y.-J. Kwon K. Lalwani J. S. Lange J. K. Lee J. Y. Lee S. C. Lee L. K. Li Y. B. Li L. Li Gioi J. Libby D. Liventsev P.-C. Lu T. Luo J. MacNaughton C. MacQueen M. Masuda T. Matsuda D. Matvienko M. Merola K. Miyabayashi R. Mizuk G. B. Mohanty T. Mori M. Nakao K. J. Nath M. Nayak M. Niiyama N. K. Nisar S. Nishida K. Nishimura H. Ono Y. Onuki P. Pakhlov G. Pakhlova B. Pal S. Pardi H. Park S. Patra S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen V. Popov M. Ritter A. Rostomyan G. Russo Y. Sakai M. Salehi S. Sandilya T. Sanuki V. Savinov O. Schneider G. Schnell C. Schwanda Y. Seino K. Senyo M. E. Sevior C. P. Shen J.-G. Shiu B. Shwartz F. Simon A. Sokolov E. Solovieva M. Starič Z. S. Stottler J. F. Strube T. Sumiyoshi W. Sutcliffe M. Takizawa U. Tamponi K. Tanida F. Tenchini K. Trabelsi M. Uchida S. Uno P. Urquijo Y. Usov R. Van Tonder G. Varner A. Vinokurova B. Wang C. H. Wang M.-Z. Wang P. Wang M. Watanabe S. Watanuki E. Won S. B. Yang H. Ye J. Yelton J. H. Yin C. Z. Yuan J. Zhang Z. P. Zhang V. Zhilich V. Zhukova P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Brookhaven National Laboratory Upton New York 11973 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 Moscow Institute of Physics and Technology Moscow Region 141700 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Tata Institute of Fundamental Research Mumbai 400005 King Abdulaziz City for Science and Technology Riyadh 11442 Saudi Arabia Pacific Northwest National Laboratory Richland Washington 99352 Indian Institute of Technology Madras Chennai 600036 II. Physikalisches Institut Georg-August-Universität Göttingen 37073 Göttingen Stefan Meyer Institute for Subatomic Physics Vienna 1090 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana Slovenia H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 University of Maribor 2000 Maribor University of Hawaii Honolulu Hawaii 96822 INFN—Sezione di Napoli 80126 Napoli Università di Napoli Federico II 80055 Napoli Institut für Experimentelle Teilchenphysik Karlsruher Institut für Technologie 76131 Karlsruhe Max-Planck-Institut für Physik 80805 München National Central University Chung-li 32054 Hanyang University Seoul 133-791 Korea Institute of Science and Technology Information Daejeon 305-806 Gyeongsang National University Chinju 660-701 Sungkyunkwan University Suwon 440-746 Wayne State University Detroit Michigan 48202 Deutsches Elektronen–Synchrotron 22607 Hamburg LAL Univ. Paris-Sud CNRS/IN2P3 Université Paris-Saclay Orsay Panjab University Chandigarh 160014 Virginia Polytechnic Institute and State University Blacksburg Virginia 24061 Indian Institute of Technology Hyderabad Telangana

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 pp¯π+π− invariant mass distribution in the channel B+→(pp¯π+π−)K+ results in the first observation of the decay ηc(2S)→pp¯π+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 ϒ(4S) resonance.

关键词： Branching fraction Hadronic decays Bottom mesons Quarkonia

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Search for the decay Bs0→η′η

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Physical Review D 2021年第3期104卷 L031101-L031101页

作者： N. K. Nisar V. Savinov I. Adachi H. Aihara S. Al Said D. M. Asner H. Atmacan T. Aushev R. Ayad V. Babu S. Bahinipati P. Behera J. Bennett M. Bessner V. Bhardwaj B. Bhuyan T. Bilka J. Biswal G. Bonvicini A. Bozek M. Bračko T. E. Browder M. Campajola D. Červenkov M.-C. Chang V. Chekelian A. Chen B. G. Cheon K. Chilikin H. E. Cho K. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe S. Das N. Dash G. De Nardo R. Dhamija F. Di Capua Z. Doležal T. V. Dong S. Dubey S. Eidelman D. Epifanov T. Ferber D. Ferlewicz A. Frey B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Garmash A. Giri P. Goldenzweig Y. Guan K. Gudkova C. Hadjivasiliou S. Halder T. Hara O. Hartbrich K. Hayasaka H. Hayashii M. T. Hedges C.-L. Hsu T. Iijima K. Inami A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs S. Jia Y. Jin C. W. Joo K. K. Joo J. Kahn A. B. Kaliyar K. H. Kang G. Karyan T. Kawasaki H. Kichimi C. Kiesling C. H. Kim D. Y. Kim S. H. Kim Y.-K. Kim K. Kinoshita P. Kodyš T. Konno A. Korobov S. Korpar E. Kovalenko P. Križan R. Kroeger P. Krokovny T. Kuhr M. Kumar R. Kumar K. Kumara A. Kuzmin Y.-J. Kwon K. Lalwani J. S. Lange S. C. Lee Y. B. Li L. Li Gioi J. Libby K. Lieret D. Liventsev C. MacQueen M. Masuda T. Matsuda D. Matvienko M. Merola F. Metzner R. Mizuk G. B. Mohanty S. Mohanty M. Nakao A. Natochii L. Nayak M. Nayak S. Nishida K. Nishimura S. Ogawa H. Ono Y. Onuki P. Oskin P. Pakhlov G. Pakhlova T. Pang S. Pardi H. Park S.-H. Park S. Patra S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen T. Podobnik E. Prencipe M. T. Prim M. Röhrken A. Rostomyan N. Rout G. Russo D. Sahoo S. Sandilya A. Sangal L. Santelj T. Sanuki G. Schnell J. Schueler C. Schwanda Y. Seino K. Senyo M. E. Sevior M. Shapkin C. Sharma C. P. Shen J.-G. Shiu B. Shwartz F. Simon E. Solovieva S. Stanič M. Starič Z. S. Stottler M. Sumihama T. Sumiyoshi M. Takizawa U. Tamponi K. Tanida F. Tenchini K. Trabelsi M. Uchida T. Uglov Y. Unno S. Uno P. Urquijo R. Van Tonder G. Varner A. Vossen E. Waheed C. H. Wang M.-Z. Wang P. Wang X. L. Wang S. Watanuki E. Won X. Xu B. D. Yab Brookhaven National Laboratory Upton New York 11973 USA University of Pittsburgh Pittsburgh Pennsylvania 15260 USA High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 Japan SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Japan Department of Physics University of Tokyo Tokyo 113-0033 Japan Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Saudi Arabia Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Saudi Arabia University of Cincinnati Cincinnati Ohio 45221 USA Higher School of Economics (HSE) Moscow 101000 Russia Deutsches Elektronen–Synchrotron 22607 Hamburg Germany Indian Institute of Technology Bhubaneswar Satya Nagar 751007 India Indian Institute of Technology Madras Chennai 600036 India University of Mississippi University Mississippi 38677 USA University of Hawaii Honolulu Hawaii 96822 USA Indian Institute of Science Education and Research Mohali SAS Nagar 140306 India Indian Institute of Technology Guwahati Assam 781039 India Faculty of Mathematics and Physics Charles University 121 16 Prague Czech Republic J. Stefan Institute 1000 Ljubljana Slovenia Wayne State University Detroit Michigan 48202 USA H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 Poland University of Maribor 2000 Maribor Slovenia INFN—Sezione di Napoli 80126 Napoli Italy Università di Napoli Federico II 80126 Napoli Italy Department of Physics Fu Jen Catholic University Taipei 24205 Republic of China Max-Planck-Institut für Physik 80805 München Germany National Central University Chung-li 32054 Taiwan Department of Physics and Institute of Natural Sciences Hanyang University Seoul 04763 South Korea P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 Russia Korea Institute of Science and Technology Information Daejeon 34141 South Korea Gyeongsang National University Jinju 52828 South Korea Sungkyunkwan University Suwon 16419 Sout

We report the results of the first search for the decay Bs0→η′η using 121.4 fb−1 of data collected at the ϒ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We observe no signifi... 详细信息

关键词： Hadronic decays Rare decays

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Study of B¯0→D+h−(h=K/π) decays at Belle

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Physical Review D 2022年第1期105卷 012003-012003页

作者： E. Waheed P. Urquijo I. Adachi H. Aihara S. Al Said D. M. Asner H. Atmacan V. Aulchenko T. Aushev S. Bahinipati P. Behera K. Belous J. Bennett M. Bessner V. Bhardwaj B. Bhuyan T. Bilka J. Biswal A. Bobrov D. Bodrov J. Borah A. Bozek M. Bračko P. Branchini T. E. Browder A. Budano M. Campajola D. Červenkov M.-C. Chang P. Chang A. Chen B. G. Cheon K. Chilikin H. E. Cho K. Cho S.-J. Cho S.-K. Choi Y. Choi S. Choudhury D. Cinabro S. Cunliffe S. Das G. De Nardo G. De Pietro R. Dhamija F. Di Capua Z. Doležal T. V. Dong D. Epifanov T. Ferber D. Ferlewicz B. G. Fulsom R. Garg V. Gaur N. Gabyshev A. Giri P. Goldenzweig B. Golob E. Graziani T. Gu Y. Guan K. Gudkova C. Hadjivasiliou S. Halder O. Hartbrich K. Hayasaka H. Hayashii W.-S. Hou C.-L. Hsu T. Iijima K. Inami A. Ishikawa R. Itoh M. Iwasaki Y. Iwasaki W. W. Jacobs S. Jia Y. Jin K. K. Joo A. B. Kaliyar K. H. Kang H. Kichimi C. H. Kim D. Y. Kim K.-H. Kim K. T. Kim Y.-K. Kim K. Kinoshita P. Kodyš T. Konno A. Korobov S. Korpar E. Kovalenko P. Križan R. Kroeger P. Krokovny M. Kumar R. Kumar K. Kumara Y.-J. Kwon Y.-T. Lai J. S. Lange M. Laurenza S. C. Lee J. Li L. K. Li Y. B. Li L. Li Gioi J. Libby K. Lieret D. Liventsev C. MacQueen M. Masuda T. Matsuda M. Merola F. Metzner K. Miyabayashi R. Mizuk G. B. Mohanty R. Mussa M. Nakao A. Natochii L. Nayak M. Nayak M. Niiyama N. K. Nisar S. Nishida S. Ogawa H. Ono P. Oskin P. Pakhlov G. Pakhlova T. Pang H. Park S.-H. Park A. Passeri S. Patra S. Paul T. K. Pedlar R. Pestotnik L. E. Piilonen T. Podobnik V. Popov E. Prencipe M. T. Prim M. Röhrken A. Rostomyan N. Rout G. Russo D. Sahoo S. Sandilya L. Santelj T. Sanuki V. Savinov G. Schnell C. Schwanda A. J. Schwartz Y. Seino K. Senyo M. E. Sevior M. Shapkin C. Sharma C. P. Shen J.-G. Shiu F. Simon J. B. Singh A. Sokolov E. Solovieva M. Starič Z. S. Stottler J. F. Strube M. Sumihama T. Sumiyoshi W. Sutcliffe M. Takizawa U. Tamponi K. Tanida F. Tenchini K. Trabelsi M. Uchida T. Uglov Y. Unno K. Uno S. Uno Y. Usov S. E. Vahsen R. Van Tonder G. Varner K. E. Varvell A. Vinokurova C. H. Wan High Energy Accelerator Research Organization (KEK) Tsukuba 305-0801 School of Physics University of Melbourne Victoria 3010 SOKENDAI (The Graduate University for Advanced Studies) Hayama 240-0193 Department of Physics University of Tokyo Tokyo 113-0033 Department of Physics Faculty of Science University of Tabuk Tabuk 71451 Department of Physics Faculty of Science King Abdulaziz University Jeddah 21589 Brookhaven National Laboratory Upton New York 11973 University of Cincinnati Cincinnati Ohio 45221 Budker Institute of Nuclear Physics SB RAS Novosibirsk 630090 Novosibirsk State University Novosibirsk 630090 National Research University Higher School of Economics Moscow 101000 Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Indian Institute of Technology Madras Chennai 600036 Institute for High Energy Physics Protvino 142281 University of Mississippi University Mississippi 38677 University of Hawaii Honolulu Hawaii 96822 Indian Institute of Science Education and Research Mohali SAS Nagar 140306 Indian Institute of Technology Guwahati Assam 781039 Faculty of Mathematics and Physics Charles University 121 16 Prague J. Stefan Institute 1000 Ljubljana P.N. Lebedev Physical Institute of the Russian Academy of Sciences Moscow 119991 H. Niewodniczanski Institute of Nuclear Physics Krakow 31-342 Faculty of Chemistry and Chemical Engineering University of Maribor 2000 Maribor INFN—Sezione di Roma Tre I-00146 Roma INFN—Sezione di Napoli I-80126 Napoli Università di Napoli Federico II I-80126 Napoli Department of Physics Fu Jen Catholic University Taipei 24205 Department of Physics National Taiwan University Taipei 10617 National Central University Chung-li 32054 Department of Physics and Institute of Natural Sciences Hanyang University Seoul 04763 Korea Institute of Science and Technology Information Daejeon 34141 Yonsei University Seoul 03722 Gyeongsang National University Jinju 52828 Sungkyunkwan University Suwon 16419 Indian Institute of Technology Hyderaba

We present a measurement of the branching fractions of the Cabibbo favored B¯0→D+π− and the Cabibbo suppressed B¯0→D+K− decays. We find B(B¯0→D+π−)=(2.48±0.01±0.09±0.04)×10−3 and B(B¯0→D+K−)=(2.03±0.05±0.07±0.03)×10−4 decays, where the first uncertainty is statistical, the second is systematic, and the third uncertainty is due to the D+→K−π+π+ branching fraction. The ratio of branching fractions of B¯0→D+K− and B¯0→D+π− is measured to be RD=[8.19±0.20(stat)±0.23(syst)]×10−2. These measurements are performed using the full Belle dataset, which corresponds to 772×106BB¯ pairs and use the Belle II software framework for data analysis.

关键词： Form factors Particle decays Particle interactions Particle mixing & oscillations W & Z bosons

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