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151. Search for a Light CP-odd Higgs Boson and Low-Mass Dark Matter at the Belle Experiment.

Author: Seong IS, Vahsen SE, Adachi I, Aihara H, Al Said S, Asner DM, Aulchenko V, Aushev T, Ayad R, Babu V, Bakich AM, Bansal V, Behera P, Bhardwaj V, Bhuyan B, Bilka T, Biswal J, Bobrov A, Bonvicini G, Bozek A, Bračko M, Browder TE, Cao L, Červenkov D, Chang P, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Dash N, Di Carlo S, Dingfelder J, Dong TV, Eidelman S, Epifanov D, Fast JE, Frey A, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Gelb M, Giri A, Goldenzweig P, Golob B, Guido E, Haba J, Hayasaka K, Hayashii H, Hedges MT, Higuchi T, Hou WS, Hsu CL, Huang K, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jeon HB, Jia S, Jin Y, Joffe D, Joo KK, Julius T, Kaliyar AB, Karyan G, Kawasaki T, Kichimi H, Kiesling C, Kim DY, Kim JB, Kim KT, Kim SH, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Kroeger R, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Lee SC, Li LK, Li YB, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, MacQueen C, Masuda M, Matsuda T, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath KJ, Nayak M, Niiyama M, Nisar NK, Nishida S, Nishimura K, Ogawa S, Ono H, Ostrowicz W, Pakhlov P, Pakhlova G, Pal B, Park H, Pedlar TK, Pestotnik R, Piilonen LE, Prencipe E, Ritter M, Rostomyan A, Russo G, Sakai Y, Salehi M, Sandilya S, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schueler J, Schwanda C, Seino Y, Senyo K, Seon O, Sevior ME, Shen CP, Shibata TA, Shiu JG, Simon F, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Sutcliffe W, Takizawa M, Tanida K, Tenchini F, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Usov Y, Van Hulse C, Van Tonder R, Varner G, Vinokurova A, Vossen A, Wang B, Wang CH, Wang P, Watanabe M, Watanuki S, Widmann E, Won E, Yamamoto H, Ye H, Yelton J, Yuan CZ, Yusa Y, Zakharov S, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, and Zupanc A
Abstract: We report on the first Belle search for a light CP-odd Higgs boson, A^{0}, that decays into low mass dark matter, χ, in final states with a single photon and missing energy. We search for events produced via the dipion transition ϒ(2S)→ϒ(1S)π^{+}π^{-}, followed by the on-shell process ϒ(1S)→γA^{0} with A^{0}→χχ, or by the off-shell process ϒ(1S)→γχχ. Utilizing a data sample of 157.3×10^{6} ϒ(2S) decays, we find no evidence for a signal. We set limits on the branching fractions of such processes in the mass ranges M_{A^{0}}<8.97 GeV/c^{2} and M_{χ}<4.44 GeV/c^{2}. We then use the limits on the off-shell process to set competitive limits on WIMP-nucleon scattering in the WIMP mass range below 5 GeV/c^{2}.
Published: 2019
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152. Observation of ϒ(2S)→γη_{b}(1S) Decay.

Author: Fulsom BG, Pedlar TK, Adachi I, Aihara H, Al Said S, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Bansal V, Behera P, Beleño C, Berger M, Bhardwaj V, Bhuyan B, Bilka T, Biswal J, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Cao L, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Choi SK, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Dash N, Di Carlo S, Dingfelder J, Doležal Z, Dong TV, Drásal Z, Eidelman S, Epifanov D, Fast JE, Ferber T, Garg R, Gaur V, Gabyshev N, Garmash A, Gelb M, Giri A, Goldenzweig P, Guido E, Haba J, Hayasaka K, Hayashii H, Hirose S, Hou WS, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jeon HB, Jia S, Jin Y, Joffe D, Joo KK, Julius T, Kawasaki T, Kichimi H, Kiesling C, Kim DY, Kim HJ, Kim JB, Kim KT, Kim SH, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Kroeger R, Krokovny P, Kuhr T, Kulasiri R, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Lee SC, Li LK, Li YB, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Matvienko D, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moon HK, Mori T, Mussa R, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Niiyama M, Nisar NK, Nishida S, Ogawa S, Okuno S, Ono H, Pakhlov P, Pakhlova G, Pal B, Pardi S, Park H, Paul S, Pestotnik R, Piilonen LE, Popov V, Prencipe E, Rabusov A, Ritter M, Rostomyan A, Russo G, Sakai Y, Salehi M, Sandilya S, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Seino Y, Senyo K, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Singh JB, Sokolov A, Solovieva E, Starič M, Strube JF, Sumihama M, Sumisawa K, Sumiyoshi T, Sutcliffe W, Takizawa M, Tamponi U, Tanida K, Tenchini F, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Vahsen SE, Van Hulse C, Van Tonder R, Varner G, Vinokurova A, Vorobyev V, Vossen A, Wang B, Wang CH, Wang P, Wang XL, Watanabe M, Watanuki S, Widmann E, Won E, Ye H, Yin JH, Yuan CZ, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, and Zupanc A
Abstract: We report the observation of ϒ(2S)→γη_{b}(1S) decay based on an analysis of the inclusive photon spectrum of 24.7 fb^{-1} of e^{+}e^{-} collisions at the ϒ(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We measure a branching fraction of B[ϒ(2S)→γη_{b}(1S)]=(6.1_{-0.7-0.6}^{+0.6+0.9})×10^{-4} and derive an η_{b}(1S) mass of 9394.8_{-3.1-2.7}^{+2.7+4.5} MeV/c^{2}, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.
Published: 2018
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153. Observation of ϒ(4S)→η^{'}ϒ(1S).

Author: Guido E, Mussa R, Tamponi U, Aihara H, Al Said S, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Bansal V, Behera P, Berger M, Bhardwaj V, Biswal J, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Choi SK, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Di Carlo S, Doležal Z, Eidelman S, Epifanov D, Fast JE, Ferber T, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Gelb M, Giri A, Goldenzweig P, Haba J, Hara T, Hayashii H, Hedges MT, Hou WS, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jeon HB, Jia S, Jin Y, Julius T, Kang KH, Karyan G, Kawasaki T, Kiesling C, Kim DY, Kim JB, Kim KT, Kim SH, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Kroeger R, Krokovny P, Kulasiri R, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lee IS, Lee SC, Li LK, Li YB, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, MacNaughton J, Masuda M, Matsuda T, Matvienko D, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moon HK, Mori T, Nakano E, Nakao M, Nanut T, Nath KJ, Nayak M, Niiyama M, Nishida S, Ogawa S, Ono H, Ostrowicz W, Pakhlova G, Pal B, Pardi S, Park CW, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Popov V, Rostomyan A, Russo G, Sakai Y, Salehi M, Sanuki T, Schneider O, Schnell G, Schwanda C, Seino Y, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sokolov A, Starič M, Strube JF, Sumihama M, Sumiyoshi T, Takizawa M, Tanida K, Tenchini F, Uchida M, Uglov T, Unno Y, Usov Y, Van Hulse C, Varner G, Vinokurova A, Wang B, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Widmann E, Won E, Ye H, Yelton J, Yuan CZ, Yusa Y, Zakharov S, Zhang ZP, Zhilich V, Zhukova V, and Zhulanov V
Abstract: We report the first observation of the hadronic transition ϒ(4S)→η^{'}ϒ(1S), using 496 fb^{-1} data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We reconstruct the η^{'} meson through its decays to ρ^{0}γ and to π^{+}π^{-}η, with η→γγ. We measure B(ϒ(4S)→η^{'}ϒ(1S))=[3.43±0.88(stat)±0.21(syst)]×10^{-5}, with a significance of 5.7σ.
Published: 2018
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154. Observation of an Excited Ω^{-} Baryon.

Author: Yelton J, Adachi I, Ahn JK, Aihara H, Al Said S, Asner DM, Atmacan H, Aushev T, Ayad R, Babu V, Badhrees I, Bahinipati S, Bakich AM, Bansal V, Beleño C, Berger M, Bhardwaj V, Bhuyan B, Bilka T, Biswal J, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Choi SK, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Czank T, Dash N, Di Carlo S, Doležal Z, Dong TV, Drásal Z, Eidelman S, Epifanov D, Fast JE, Fulsom BG, Garg R, Gaur V, Gabyshev N, Garmash A, Gelb M, Giri A, Goldenzweig P, Greenwald D, Guido E, Haba J, Hayasaka K, Hayashii H, Hirose S, Hou WS, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jeon HB, Jia S, Jin Y, Joo KK, Julius T, Kaliyar AB, Kang KH, Karyan G, Kato Y, Kiesling C, Kim DY, Kim JB, Kim KT, Kim SH, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Kroeger R, Krokovny P, Kuhr T, Kumar R, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Lee SC, Li LK, Li YB, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Matvienko D, McNeil JT, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moon HK, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Niiyama M, Nisar NK, Nishida S, Ono H, Pakhlov P, Pakhlova G, Pal B, Pardi S, Park H, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Popov V, Ritter M, Russo G, Sahoo D, Sakai Y, Sandilya S, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Seino Y, Senyo K, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Sokolov A, Solovieva E, Starič M, Strube JF, Sumihama M, Sumiyoshi T, Suzuki K, Takizawa M, Tamponi U, Tanida K, Tao Y, Tenchini F, Uchida M, Uglov T, Uno S, Urquijo P, Usov Y, Vahsen SE, Van Hulse C, Varner G, Vorobyev V, Vossen A, Wang B, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanuki S, Widmann E, Won E, Ye H, Yuan CZ, Yusa Y, Zakharov S, Zhang ZP, Zhilich V, Zhukova V, and Zhulanov V
Abstract: Using data recorded with the Belle detector, we observe a new excited hyperon, an Ω^{*-} candidate decaying into Ξ^{0}K^{-} and Ξ^{-}K_{S}^{0} with a mass of 2012.4±0.7(stat)±0.6(syst) MeV/c^{2} and a width of Γ=6.4_{-2.0}^{+2.5}(stat)±1.6(syst) MeV. The Ω^{*-} is seen primarily in ϒ(1S),ϒ(2S), and ϒ(3S) decays.
Published: 2018
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155. Search for B^{-}→μ^{-}ν[over ¯]_{μ} Decays at the Belle Experiment.

Author: Sibidanov A, Varvell KE, Adachi I, Aihara H, Al Said S, Asner DM, Aushev T, Ayad R, Babu V, Badhrees I, Bahinipati S, Bakich AM, Bansal V, Barberio E, Behera P, Bhuyan B, Biswal J, Bozek A, Bračko M, Browder TE, Červenkov D, Chang P, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Choi SK, Choi Y, Cinabro D, Czank T, Dash N, Di Carlo S, Doležal Z, Drásal Z, Dutta D, Eidelman S, Epifanov D, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Goldenzweig P, Greenwald D, Guan Y, Guido E, Haba J, Hayasaka K, Hayashii H, Hedges MT, Hirose S, Hou WS, Hsu CL, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Jin Y, Joo KK, Julius T, Kahn J, Kaliyar AB, Kang KH, Karyan G, Kawasaki T, Kiesling C, Kim DY, Kim JB, Kim SH, Kim YJ, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Krokovny P, Kuhr T, Kulasiri R, Kumar R, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Li CH, Li L, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moon HK, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Niiyama M, Nisar NK, Nishida S, Ogawa S, Okuno S, Ono H, Pakhlov P, Pakhlova G, Pal B, Park CS, Park CW, Park H, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Ritter M, Rostomyan A, Rozanska M, Sakai Y, Salehi M, Sandilya S, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Seino Y, Senyo K, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Sokolov A, Solovieva E, Starič M, Strube JF, Stypula J, Sumihama M, Sumisawa K, Sumiyoshi T, Takizawa M, Tamponi U, Tanida K, Tenchini F, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Van Hulse C, Varner G, Vorobyev V, Wang CH, Wang MZ, Wang P, Watanabe M, Watanuki S, Widmann E, Won E, Yamashita Y, Ye H, Yelton J, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, and Zupanc A
Abstract: We report the results of a search for the rare, purely leptonic decay B^{-}→μ^{-}ν[over ¯]_{μ} performed with a 711 fb^{-1} data sample that contains 772×10^{6} BB[over ¯] pairs, collected near the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The signal events are selected based on the presence of a high momentum muon and the topology of the rest of the event showing properties of a generic B-meson decay, as well as the missing energy and momentum being consistent with the hypothesis of a neutrino from the signal decay. We find a 2.4 standard deviation excess above background including systematic uncertainties, which corresponds to a branching fraction of B(B^{-}→μ^{-}ν[over ¯]_{μ})=(6.46±2.22±1.60)×10^{-7} or a frequentist 90% confidence level interval on the B^{-}→μ^{-}ν[over ¯]_{μ} branching fraction of [2.9,10.7]×10^{-7}.
Published: 2018
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156. Evidence for Isospin Violation and Measurement of CP Asymmetries in B→K^{*}(892)γ.

Author: Horiguchi T, Ishikawa A, Yamamoto H, Adachi I, Aihara H, Al Said S, Asner DM, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Bansal V, Behera P, Bhardwaj V, Bhuyan B, Biswal J, Bobrov A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Choi Y, Cinabro D, Czank T, Dash N, Di Carlo S, Doležal Z, Drásal Z, Dutta D, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Gelb M, Gillard R, Goldenzweig P, Golob B, Guan Y, Guido E, Haba J, Hara T, Hayasaka K, Hayashii H, Hedges MT, Higuchi T, Hirose S, Hou WS, Iijima T, Inami K, Inguglia G, Itoh R, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Jia S, Jin Y, Joffe D, Joo KK, Julius T, Kang KH, Kawasaki T, Kim DY, Kim JB, Kim KT, Kim MJ, Kim SH, Kim YJ, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Krokovny P, Kuhr T, Kulasiri R, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Li CH, Li L, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Matvienko D, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Mohanty S, Moon HK, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Nisar NK, Nishida S, Ogawa S, Okuno S, Ono H, Pakhlov P, Pakhlova G, Pal B, Pardi S, Park CS, Park H, Paul S, Pedlar TK, Pestotnik R, Piilonen LE, Prasanth K, Pulvermacher C, Rauch J, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Savinov V, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Seino Y, Senyo K, Seong IS, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Sokolov A, Solovieva E, Starič M, Strube JF, Sumisawa K, Sumiyoshi T, Takizawa M, Tamponi U, Tanida K, Tenchini F, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Van Hulse C, Varner G, Vinokurova A, Vorobyev V, Vossen A, Wang CH, Wang MZ, Wang P, Watanabe Y, Watanuki S, Weber T, Widmann E, Won E, Yamashita Y, Ye H, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, and Zupanc A
Abstract: We report the first evidence for isospin violation in B→K^{*}γ and the first measurement of the difference of CP asymmetries between B^{+}→K^{*+}γ and B^{0}→K^{*0}γ. This analysis is based on the data sample containing 772×10^{6}BB[over ¯] pairs that was collected with the Belle detector at the KEKB energy-asymmetric e^{+}e^{-} collider. We find evidence for the isospin violation with a significance of 3.1σ, Δ_{0+}=[+6.2±1.5(stat)±0.6(syst)±1.2(f_{+-}/f_{00})]%, where the third uncertainty is due to the uncertainty on the fraction of B^{+}B^{-} to B^{0}B[over ¯]^{0} production in ϒ(4S) decays. The measured value is consistent with predictions of the standard model. The result for the difference of CP asymmetries is ΔA_{CP}=[+2.4±2.8(stat)±0.5(syst)]%, consistent with zero. The measured branching fractions and CP asymmetries for charged and neutral B meson decays are the most precise to date. We also calculate the ratio of branching fractions of B^{0}→K^{*0}γ to B_{s}^{0}→ϕγ.
Published: 2017
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157. Search for CP Violation and Measurement of the Branching Fraction in the Decay D^{0}→K_{S}^{0}K_{S}^{0}.

Author: Dash N, Bahinipati S, Bhardwaj V, Trabelsi K, Adachi I, Aihara H, Al Said S, Asner DM, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Bansal V, Barberio E, Bhuyan B, Biswal J, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Breibeck F, Browder TE, Červenkov D, Chang MC, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Choi Y, Cinabro D, Di Carlo S, Doležal Z, Drásal Z, Dutta D, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Gillard R, Goldenzweig P, Haba J, Hara T, Hayasaka K, Hayashii H, Hedges MT, Hou WS, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Jin Y, Joffe D, Joo KK, Julius T, Kahn J, Kaliyar AB, Karyan G, Katrenko P, Kawasaki T, Kiesling C, Kim DY, Kim HJ, Kim JB, Kim KT, Kim MJ, Kim SH, Kim YJ, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Krokovny P, Kuhr T, Kulasiri R, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Li CH, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matvienko D, Merola M, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Mohanty S, Moon HK, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Niiyama M, Nisar NK, Nishida S, Ogawa S, Okuno S, Ono H, Pakhlov P, Pakhlova G, Pal B, Pardi S, Park CS, Park H, Paul S, Pedlar TK, Pesántez L, Pestotnik R, Piilonen LE, Prasanth K, Ritter M, Rostomyan A, Sahoo H, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Seino Y, Senyo K, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Sokolov A, Solovieva E, Starič M, Strube JF, Stypula J, Sumisawa K, Sumiyoshi T, Takizawa M, Tamponi U, Tanida K, Tenchini F, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Van Hulse C, Varner G, Vorobyev V, Vossen A, Waheed E, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Widmann E, Williams KM, Won E, Yamashita Y, Ye H, Yelton J, Yook Y, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, and Zupanc A
Abstract: We report a study of the decay D^{0}→K_{S}^{0}K_{S}^{0} using 921 fb^{-1} of data collected at or near the ϒ(4S) and ϒ(5S) resonances with the Belle detector at the KEKB asymmetric energy e^{+}e^{-} collider. The measured time-integrated CP asymmetry is A_{CP}(D^{0}→K_{S}^{0}K_{S}^{0})=(-0.02±1.53±0.02±0.17)%, and the branching fraction is B(D^{0}→K_{S}^{0}K_{S}^{0})=(1.321±0.023±0.036±0.044)×10^{-4}, where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (D^{0}→K_{S}^{0}π^{0}). These results are significantly more precise than previous measurements available for this mode. The A_{CP} measurement is consistent with the standard model expectation.
Published: 2017
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158. Measurement of the τ Lepton Polarization and R(D^{}) in the Decay B[over ¯]→D^{}τ^{-}ν[over ¯]_{τ}.

Author: Hirose S, Iijima T, Adachi I, Adamczyk K, Aihara H, Al Said S, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Bansal V, Barberio E, Behera P, Berger M, Bhuyan B, Biswal J, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chang P, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Choi Y, Cinabro D, Danilov M, Dash N, Di Carlo S, Dingfelder J, Doležal Z, Drásal Z, Dutta D, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Goldenzweig P, Golob B, Greenwald D, Grygier J, Haba J, Hara K, Hasenbusch J, Hayasaka K, Hayashii H, Higuchi T, Hou WS, Hsu CL, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki Y, Jacobs WW, Jaegle I, Jin Y, Joffe D, Joo KK, Julius T, Kato Y, Kawasaki T, Kichimi H, Kiesling C, Kim DY, Kim JB, Kim KT, Kim MJ, Kim SH, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Krokovny P, Kuhr T, Kulasiri R, Kumar R, Kwon YJ, Lange JS, Li CH, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, MacNaughton J, Masuda M, Matsuda T, Matvienko D, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohanty GB, Moon HK, Mori T, Mussa R, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Niiyama M, Nisar NK, Nishida S, Ogawa S, Okuno S, Ono H, Onuki Y, Ostrowicz W, Pakhlov P, Pakhlova G, Pal B, Park CW, Park H, Paul S, Pesántez L, Pestotnik R, Piilonen LE, Prasanth K, Ritter M, Rostomyan A, Rozanska M, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schwanda C, Seino Y, Senyo K, Seon O, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Sokolov A, Solovieva E, Starič M, Strube JF, Sumisawa K, Sumiyoshi T, Takizawa M, Tamponi U, Tenchini F, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Van Hulse C, Varner G, Varvell KE, Vossen A, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Widmann E, Won E, Yamashita Y, Ye H, Yelton J, Yuan CZ, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We report the first measurement of the τ lepton polarization P_{τ}(D^{*}) in the decay B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ} as well as a new measurement of the ratio of the branching fractions R(D^{*})=B(B[over ¯]→D^{*}τ^{-}ν[over ¯]_{τ})/B(B[over ¯]→D^{*}ℓ^{-}ν[over ¯]_{ℓ}), where ℓ^{-} denotes an electron or a muon, and the τ is reconstructed in the modes τ^{-}→π^{-}ν_{τ} and τ^{-}→ρ^{-}ν_{τ}. We use the full data sample of 772×10^{6} BB[over ¯] pairs recorded with the Belle detector at the KEKB electron-positron collider. Our results, P_{τ}(D^{*})=-0.38±0.51(stat)_{-0.16}^{+0.21}(syst) and R(D^{*})=0.270±0.035(stat)_{-0.025}^{+0.028}(syst), are consistent with the theoretical predictions of the standard model.
Published: 2017
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159. Lepton-Flavor-Dependent Angular Analysis of B→K^{*}ℓ^{+}ℓ^{-}.

Author: Wehle S, Niebuhr C, Yashchenko S, Adachi I, Aihara H, Al Said S, Asner DM, Aulchenko V, Aushev T, Ayad R, Aziz T, Babu V, Bakich AM, Bansal V, Barberio E, Bartel W, Behera P, Bhuyan B, Biswal J, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chang P, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Choi Y, Cinabro D, Dash N, Dingfelder J, Doležal Z, Drásal Z, Dutta D, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Gillard R, Goldenzweig P, Golob B, Grzymkowska O, Guido E, Haba J, Hara T, Hayasaka K, Hayashii H, Hedges MT, Hou WS, Hsu CL, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Jin Y, Joffe D, Joo KK, Julius T, Kaliyar AB, Kang KH, Karyan G, Katrenko P, Kawasaki T, Kichimi H, Kiesling C, Kim DY, Kim HJ, Kim JB, Kim KT, Kim MJ, Kim SH, Kinoshita K, Koch L, Kodyš P, Korpar S, Kotchetkov D, Križan P, Krokovny P, Kuhr T, Kulasiri R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Li CH, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Miyabayashi K, Miyake H, Mizuk R, Mohanty GB, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Nisar NK, Nishida S, Ogawa S, Ono H, Onuki Y, Pakhlova G, Pal B, Park CS, Park CW, Park H, Paul S, Pesántez L, Piilonen LE, Pulvermacher C, Rauch J, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Seino Y, Senyo K, Seon O, Seong IS, Sevior ME, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Sinha R, Solovieva E, Starič M, Strube JF, Sumisawa K, Sumiyoshi T, Takizawa M, Tamponi U, Tenchini F, Trabelsi K, Tsuboyama T, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Vahsen SE, Van Hulse C, Varner G, Varvell KE, Vorobyev V, Vossen A, Waheed E, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Widmann E, Williams KM, Won E, Yamamoto H, Yamashita Y, Ye H, Yook Y, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, Ziegler M, and Zupanc A
Abstract: We present a measurement of angular observables and a test of lepton flavor universality in the B→K^{*}ℓ^{+}ℓ^{-} decay, where ℓ is either e or μ. The analysis is performed on a data sample corresponding to an integrated luminosity of 711 fb^{-1} containing 772×10^{6} BB[over ¯] pairs, collected at the ϒ(4S) resonance with the Belle detector at the asymmetric-energy e^{+}e^{-} collider KEKB. The result is consistent with standard model (SM) expectations, where the largest discrepancy from a SM prediction is observed in the muon modes with a local significance of 2.6σ.
Published: 2017
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160. Observation of D^{0}→ρ^{0}γ and Search for CP Violation in Radiative Charm Decays.

Author: Nanut T, Zupanc A, Adachi I, Aihara H, Al Said S, Asner DM, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Bansal V, Behera P, Bhardwaj V, Biswal J, Bondar A, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chistov R, Cho K, Choi SK, Choi Y, Cinabro D, Dash N, Di Carlo S, Doležal Z, Dutta D, Eidelman S, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Gillard R, Goldenzweig P, Golob B, Hayasaka K, Hayashii H, Hou WS, Iijima T, Inami K, Inguglia G, Ishikawa A, Iwasaki Y, Jacobs WW, Jaegle I, Joffe D, Joo KK, Julius T, Kaliyar AB, Kang KH, Kawasaki T, Kim DY, Kim JB, Kim KT, Kim MJ, Kim SH, Kinoshita K, Kodyš P, Korpar S, Krokovny P, Kuhr T, Kulasiri R, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Li CH, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Masuda M, Matsuda T, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moon HK, Nakao M, Nath KJ, Nayak M, Nisar NK, Nishida S, Ogawa S, Okuno S, Pakhlov P, Pakhlova G, Pal B, Park CS, Park CW, Park H, Paul S, Pedlar TK, Pesántez L, Pestotnik R, Petrič M, Piilonen LE, Prasanth K, Pulvermacher C, Rauch J, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Seino Y, Senyo K, Seon O, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Solovieva E, Stanič S, Starič M, Strube JF, Stypula J, Sumiyoshi T, Takizawa M, Tamponi U, Tenchini F, Trabelsi K, Uchida M, Uno S, Ushiroda Y, Varner G, Vinokurova A, Vorobyev V, Vossen A, Wang CH, Wang MZ, Wang P, Watanabe Y, Widmann E, Won E, Yamaoka J, Yamashita Y, Yelton J, Zhang ZP, Zhilich V, Zhukova V, and Zhulanov V
Abstract: We report the first observation of the radiative charm decay D^{0}→ρ^{0}γ and the first search for CP violation in decays D^{0}→ρ^{0}γ, ϕγ, and K[over ¯]^{*0}(892)γ, using a data sample of 943 fb^{-1} collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. The branching fraction is measured to be B(D^{0}→ρ^{0}γ)=(1.77±0.30±0.07)×10^{-5}, where the first uncertainty is statistical and the second is systematic. The obtained CP asymmetries A_{CP}(D^{0}→ρ^{0}γ)=+0.056±0.152±0.006, A_{CP}(D^{0}→ϕγ)=-0.094±0.066±0.001, and A_{CP}(D^{0}→K[over ¯]^{*0}γ)=-0.003±0.020±0.000 are consistent with no CP violation. We also present an improved measurement of the branching fractions B(D^{0}→ϕγ)=(2.76±0.19±0.10)×10^{-5} and B(D^{0}→K[over ¯]^{*0}γ)=(4.66±0.21±0.21)×10^{-4}.
Published: 2017
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161. Energy Scan of the e^{+}e^{-}→h_{b}(nP)π^{+}π^{-} (n=1, 2) Cross Sections and Evidence for ϒ(11020) Decays into Charged Bottomoniumlike States.

Author: Mizuk R, Bondar A, Adachi I, Aihara H, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Badhrees I, Bakich AM, Barberio E, Behera P, Bhardwaj V, Bhuyan B, Biswal J, Bobrov A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Dash N, Doležal Z, Drutskoy A, Eidelman S, Epifanov D, Ferber T, Fulsom BG, Gaur V, Garmash A, Gillard R, Goh YM, Goldenzweig P, Golob B, Greenwald D, Hara T, Hayasaka K, Hayashii H, Hou WS, Hsu CL, Inami K, Inguglia G, Ishikawa A, Iwasaki Y, Jaegle I, Julius T, Kang KH, Katrenko P, Kim DY, Kim HJ, Kim JB, Kim KT, Kim MJ, Kim SH, Kim YJ, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Lange JS, Li CH, Li H, Li L, Li Gioi L, Libby J, Liventsev D, Lubej M, Luo T, Masuda M, Matsuda T, Matvienko D, Miyabayashi K, Miyata H, Mohanty GB, Moll A, Nakano E, Nakao M, Nanut T, Nath KJ, Negishi K, Niiyama M, Nisar NK, Nishida S, Ogawa S, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Pal B, Park CW, Park H, Paul S, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Pulvermacher C, Ritter M, Sakai Y, Sandilya S, Sanuki T, Savinov V, Schlüter T, Schneider O, Schnell G, Schwanda C, Seino Y, Semmler D, Senyo K, Seon O, Sevior ME, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Solovieva E, Starič M, Stypula J, Sumiyoshi T, Takizawa M, Tamponi U, Tanida K, Teramoto Y, Tikhomirov I, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Van Hulse C, Varner G, Vorobyev V, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Williams KM, Won E, Yamaoka J, Yamashita Y, Yelton J, Yuan CZ, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, and Zupanc A
Abstract: Using data collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider, we measure the energy dependence of the e^{+}e^{-}→h_{b}(nP)π^{+}π^{-} (n=1, 2) cross sections from thresholds up to 11.02 GeV. We find clear ϒ(10860) and ϒ(11020) peaks with little or no continuum contribution. We study the resonant substructure of the ϒ(11020)→h_{b}(nP)π^{+}π^{-} transitions and find evidence that they proceed entirely via the intermediate isovector states Z_{b}(10610) and Z_{b}(10650). The relative fraction of these states is loosely constrained by the current data: The hypothesis that only Z_{b}(10610) is produced is excluded at the level of 3.3 standard deviations, while the hypothesis that only Z_{b}(10650) is produced is not excluded at a significant level.
Published: 2016
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162. First Observation of the Doubly Cabibbo-Suppressed Decay of a Charmed Baryon: Λ_{c}^{+}→pK^{+}π^{-}.

Author: Yang SB, Tanida K, Kim BH, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Babu V, Badhrees I, Bakich AM, Barberio E, Bhardwaj V, Bhuyan B, Biswal J, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Danilov M, Dash N, Doležal Z, Drásal Z, Dutta D, Eidelman S, Farhat H, Fast JE, Ferber T, Fulsom BG, Gabyshev N, Garmash A, Gaur V, Gillard R, Goh YM, Goldenzweig P, Greenwald D, Grygier J, Haba J, Hamer P, Hara T, Hayasaka K, Hayashii H, Hou WS, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Joo KK, Julius T, Kang KH, Kato E, Katrenko P, Kiesling C, Kim DY, Kim HJ, Kim JB, Kim KT, Kim MJ, Kim SH, Kim SK, Kim YJ, Kinoshita K, Kobayashi N, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Li CH, Li H, Li L, Li Y, Li Gioi L, Libby J, Liventsev D, Lubej M, Masuda M, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Moon HK, Mussa R, Nakano E, Nakao M, Nanut T, Nath KJ, Nayak M, Negishi K, Niiyama M, Nisar NK, Nishida S, Ogawa S, Okuno S, Olsen SL, Pakhlova G, Pal B, Park CW, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Pulvermacher C, Rauch J, Ritter M, Rostomyan A, Ryu S, Sahoo H, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Seino Y, Senyo K, Seon O, Seong IS, Sevior ME, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Sohn YS, Sokolov A, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Takizawa M, Tamponi U, Teramoto Y, Trabelsi K, Trusov V, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vanhoefer P, Varner G, Varvell KE, Vinokurova A, Vossen A, Wagner MN, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Williams KM, Won E, Yamaoka J, Yashchenko S, Ye H, Yelton J, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We report the first observation of the decay Λ_{c}^{+}→pK^{+}π^{-} using a 980 fb^{-1} data sample collected by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. This is the first observation of a doubly Cabibbo-suppressed decay of a charmed baryon. We measure the branching ratio of this decay with respect to its Cabibbo-favored counterpart to be B(Λ_{c}^{+}→pK^{+}π^{-})/B(Λ_{c}^{+}→pK^{-}π^{+})=(2.35±0.27±0.21)×10^{-3}, where the uncertainties are statistical and systematic, respectively.
Published: 2016
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163. Observation of Z_{b}(10610) and Z_{b}(10650) Decaying to B Mesons.

Author: Garmash A, Abdesselam A, Adachi I, Aihara H, Asner DM, Aushev T, Ayad R, Aziz T, Babu V, Badhrees I, Bakich AM, Behera P, Bhardwaj V, Bhuyan B, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Danilov M, Dash N, Doležal Z, Drutskoy A, Dutta D, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Gillard R, Goh YM, Goldenzweig P, Golob B, Hara T, Hayasaka K, Hayashii H, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Jaegle I, Joffe D, Joo KK, Julius T, Kang KH, Kato E, Kawasaki T, Kim DY, Kim JB, Kim KT, Kim MJ, Kim SH, Kim YJ, Kinoshita K, Korpar S, Križan P, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Li C, Li H, Li L, Li Gioi L, Libby J, Liventsev D, Lukin P, Masuda M, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Natkaniec Z, Nishida S, Olsen SL, Pakhlov P, Pakhlova G, Pal B, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Pulvermacher C, Ribežl E, Ritter M, Rostomyan A, Sahoo H, Sakai Y, Sandilya S, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Seino Y, Semmler D, Senyo K, Seong IS, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Sohn YS, Solovieva E, Starič M, Sumiyoshi T, Tamponi U, Tanida K, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Uno S, Van Hulse C, Vanhoefer P, Varner G, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Watanabe Y, Williams KM, Won E, Yamamoto H, Yamaoka J, Yashchenko S, Yelton J, Yook Y, Yuan CZ, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We report the analysis of the three-body e^{+}e^{-}→BB[over ¯]π^{±}, BB[over ¯]^{*}π^{±}, and B^{*}B[over ¯]^{*}π^{±} processes, including the first observations of the Z_{b}^{±}(10610)→[BB[over ¯]^{*}+c.c.]^{±} and Z_{b}^{±}(10650)→[B^{*}B[over ¯]^{*}]^{±} transitions that are found to dominate the corresponding final states. We measure Born cross sections for the three-body production of σ(e^{+}e^{-}→[BB[over ¯]^{*}+c.c.]^{±}π^{∓})=[17.4±1.6(stat)±1.9(syst)] pb and σ(e^{+}e^{-}→[B^{*}B[over ¯]^{*}]^{±}π^{∓})=[8.75±1.15(stat)±1.04(syst)] pb and set a 90% C.L. upper limit of σ(e^{+}e^{-}→[BB[over ¯]]^{±}π^{∓})<2.9 pb. The results are based on a 121.4 fb^{-1} data sample collected with the Belle detector at a center-of-mass energy near the ϒ(10860) peak.
Published: 2016
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164. Observation of the Decay B_{s}^{0}→K^{0}K[over ¯]^{0}.

Author: Pal B, Schwartz AJ, Abdesselam A, Adachi I, Aihara H, Asner DM, Aushev T, Ayad R, Aziz T, Babu V, Badhrees I, Bahinipati S, Bakich AM, Barberio E, Behera P, Bhardwaj V, Bhuyan B, Biswal J, Bobrov A, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chistov R, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Dash N, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Eidelman S, Farhat H, Fast JE, Fulsom BG, Gaur V, Garmash A, Gillard R, Goh YM, Goldenzweig P, Greenwald D, Grzymkowska O, Haba J, Hara T, Hayasaka K, Hayashii H, He XH, Hou WS, Inami K, Ishikawa A, Iwasaki Y, Jacobs WW, Jaegle I, Jeon HB, Joffe D, Joo KK, Julius T, Kang KH, Kato E, Kawasaki T, Kiesling C, Kim DY, Kim HJ, Kim KT, Kim MJ, Kim SH, Kinoshita K, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lee IS, Li CH, Li H, Li L, Li Gioi L, Libby J, Liventsev D, Lukin P, Luo T, Masuda M, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Mohanty S, Moll A, Moon HK, Mori T, Mussa R, Nakano E, Nakao M, Nanut T, Natkaniec Z, Nayak M, Nisar NK, Nishida S, Ogawa S, Okuno S, Pakhlov P, Pakhlova G, Park CW, Park H, Paul S, Pedlar TK, Pesántez L, Pestotnik R, Petrič M, Piilonen LE, Pulvermacher C, Rauch J, Ribežl E, Ritter M, Rostomyan A, Ryu S, Sahoo H, Sakai Y, Sandilya S, Sanuki T, Sato Y, Savinov V, Schlüter T, Schneider O, Schnell G, Schwanda C, Seino Y, Senyo K, Seon O, Seong IS, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Tamponi U, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Uno S, Urquijo P, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vossen A, Wagner MN, Wang CH, Wang MZ, Wang XL, Watanabe M, Watanabe Y, Williams KM, Won E, Yamaoka J, Yelton J, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We measure the decay B_{s}^{0}→K^{0}K[over ¯]^{0} using data collected at the ϒ(5S) resonance with the Belle detector at the KEKB e^{+}e^{-} collider. The data sample used corresponds to an integrated luminosity of 121.4 fb^{-1}. We measure a branching fraction B(B_{s}^{0}→K^{0}K[over ¯]^{0})=[19.6_{-5.1}^{+5.8}(stat)±1.0(syst)±2.0(N_{B_{s}^{0}B[over ¯]_{s}^{0}})]×10^{-6} with a significance of 5.1 standard deviations. This measurement constitutes the first observation of this decay.
Published: 2016
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165. Observation of B^{0}→pΛ[over ¯]D^{(*)-}.

Author: Chang YY, Wang MZ, Abdesselam A, Adachi I, Adamczyk K, Aihara H, Al Said S, Asner DM, Atmacan H, Aushev T, Babu V, Badhrees I, Bakich AM, Barberio E, Bhuyan B, Biswal J, Bobrov A, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Dingfelder J, Doležal Z, Drásal Z, Dutta D, Eidelman S, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Ganguly S, Garmash A, Gillard R, Glattauer R, Goh YM, Goldenzweig P, Greenwald D, Grzymkowska O, Haba J, Hayasaka K, Hayashii H, He XH, Hou WS, Hsu CL, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Jacobs WW, Jaegle I, Joffe D, Joo KK, Kawasaki T, Kim DY, Kim HJ, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SH, Kim YJ, Kinoshita K, Korpar S, Križan P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lai YT, Lee IS, Li L, Li Y, Libby J, Liventsev D, Lukin P, Masuda M, Matvienko D, Miyabayashi K, Miyake H, Miyata H, Mizuk R, Mohanty GB, Mohanty S, Moll A, Moon HK, Mori T, Nakano E, Nakao M, Nanut T, Nayak M, Nishida S, Ogawa S, Ozaki H, Pakhlov P, Pakhlova G, Pal B, Park CW, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Rauch J, Ribežl E, Ritter M, Rostomyan A, Ryu S, Sahoo H, Sakai Y, Sandilya S, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Seino Y, Senyo K, Seong IS, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Sohn YS, Starič M, Stypula J, Sumihama M, Sumisawa K, Sumiyoshi T, Tamponi U, Tanida K, Teramoto Y, Uglov T, Unno Y, Uno S, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Vorobyev V, Vossen A, Wagner MN, Wang CH, Wang P, Watanabe M, Watanabe Y, Williams KM, Won E, Yamaoka J, Yashchenko S, Yelton J, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We report the first observation of the decays B^{0}→pΛ[over ¯]D^{(*)-}. The data sample of 711 fb^{-1} used in this analysis corresponds to 772×10^{6} BB[over ¯] pairs, collected at the ϒ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We observe 19.8σ and 10.8σ excesses of events for the two decay modes and measure the branching fractions of B^{0}→pΛ[over ¯]D^{-} and B^{0}→pΛ[over ¯]D^{*-} to be (25.1±2.6±3.5)×10^{-6} and (33.6±6.3±4.4)×10^{-6}, respectively, where the first uncertainties are statistical and the second are systematic. These results are not compatible with the predictions based on the generalized factorization approach. In addition, a threshold enhancement in the dibaryon (pΛ[over ¯]) system is observed, consistent with that observed in similar B decays.
Published: 2015
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166. First Observation of the Hadronic Transition ϒ(4S)→ηh(b)(1P) and New Measurement of the h(b)(1P) and η(b)(1S) Parameters.

Author: Tamponi U, Mussa R, Abdesselam A, Aihara H, Arinstein K, Asner DM, Atmacan H, Aushev T, Ayad R, Badhrees I, Bakich AM, Barberio E, Bhardwaj V, Bhuyan B, Biswal J, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chen A, Cheon BG, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Fulsom BG, Gaur V, Gabyshev N, Garmash A, Getzkow D, Gillard R, Goh YM, Golob B, Haba J, Hayasaka K, Hayashii H, He XH, Hedges MT, Hou WS, Iijima T, Inami K, Ishikawa A, Jaegle I, Joffe D, Julius T, Kato E, Katrenko P, Kichimi H, Kiesling C, Kim DY, Kim HJ, Kim JH, Kim KT, Kim SH, Kinoshita K, Kodyš P, Korpar S, Križan P, Krokovny P, Kumita T, Kuzmin A, Lange JS, Lewis P, Libby J, Lukin P, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Mori T, Nakano E, Nakao M, Nanut T, Natkaniec Z, Nayak M, Nisar NK, Nishida S, Ogawa S, Okuno S, Olsen SL, Ostrowicz W, Oswald C, Pakhlova G, Pal B, Park H, Pedlar TK, Pesántez L, Pestotnik R, Petrič M, Piilonen LE, Ribežl E, Ritter M, Rostomyan A, Ryu S, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Semmler D, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sohn YS, Sokolov A, Starič M, Steder M, Stypula J, Tanida K, Teramoto Y, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vossen A, Wagner MN, Wang MZ, Wang XL, Watanabe Y, Williams KM, Won E, Yamaoka J, Yashchenko S, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: Using a sample of 771.6×10(6) ϒϒ(4S) decays collected by the Belle experiment at the KEKB e(+)e(-) collider, we observe, for the first time, the transition ϒ(4S)→ηh(b)(1P) with the branching fraction B[ϒ(4S)→ηh(b)(1P)]=(2.18±0.11±0.18)×10(-3) and we measure the h(b)(1P) mass M(h(b)(1P))=(9899.3±0.4±1.0) MeV/c(2), corresponding to the hyperfine (HF) splitting ΔM(HF)(1P)=(0.6±0.4±1.0) MeV/c(2). Using the transition h(b)(1P)→γη(b)(1S), we measure the η(b)(1S) mass M(η(b)(1S))=(9400.7±1.7±1.6) MeV/c(2), corresponding to ΔM(HF)(1S)=(59.6±1.7±1.6) MeV/c(2), the η(b)(1S) width Γ(η(b)(1S))=(8(-5)(+6)±5) MeV/c(2) and the branching fraction B[h(b)(1P)→γη(b)(1S)]=(56±8±4)%.
Published: 2015
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167. Search for the dark photon and the dark Higgs boson at belle.

Author: Jaegle I, Adachi I, Aihara H, Al Said S, Asner DM, Aushev T, Ayad R, Bakich AM, Bansal V, Barrett M, Bhuyan B, Bozek A, Bračko M, Browder TE, Červenkov D, Chang MC, Cheon BG, Chilikin K, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Frost O, Gaur V, Gabyshev N, Ganguly S, Garmash A, Getzkow D, Gillard R, Goh YM, Golob B, Grzymkowska O, Hayasaka K, Hayashii H, He XH, Hedges M, Hou WS, Iijima T, Inami K, Ishikawa A, Iwasaki Y, Julius T, Kang KH, Kato E, Kawasaki T, Kim DY, Kim JB, Kim JH, Kim SH, Kinoshita K, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Lewis P, Li Gioi L, Libby J, Liventsev D, Matvienko D, Miyata H, Mizuk R, Mohanty GB, Moll A, Mussa R, Nakano E, Nakao M, Nisar NK, Nishida S, Ogawa S, Pakhlov P, Pakhlova G, Park H, Pedlar TK, Pesántez L, Petrič M, Piilonen LE, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Semmler D, Senyo K, Seon O, Seong I, Sevior ME, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Sinha R, Sohn YS, Starič M, Sumihama M, Sumisawa K, Tamponi U, Tatishvili G, Teramoto Y, Thorne F, Uchida M, Uehara S, Unno Y, Uno S, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Wagner MN, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Williams KM, Won E, Yamaoka J, Yashchenko S, Yook Y, Yusa Y, Zhilich V, Zhulanov V, and Zupanc A
Abstract: The dark photon A^{'} and the dark Higgs boson h^{'} are hypothetical constituents featured in a number of recently proposed dark sector models. Assuming prompt decays of both dark particles, we search for their production in the so-called Higgstrahlung channel e^{+}e^{-}→A^{'}h^{'}, with h^{'}→A^{'}A^{'}. We investigate ten exclusive final states with A^{'}→e^{+}e^{-}, μ^{+}μ^{-}, or π^{+}π^{-} in the mass ranges 0.1 GeV/c^{2}
Published: 2015
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168. Measurement of the Direct CP Asymmetry in B¯→X(s+dγ) Decays with a Lepton Tag.

Author: Pesántez L, Urquijo P, Dingfelder J, Abdesselam A, Adachi I, Adamczyk K, Aihara H, Al Said S, Arinstein K, Asner DM, Aulchenko V, Aushev T, Ayad R, Bahinipati S, Bakich AM, Bansal V, Barberio E, Bhardwaj V, Bhuyan B, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Eidelman S, Farhat H, Fast JE, Ferber T, Frost O, Gaur V, Gabyshev N, Ganguly S, Garmash A, Getzkow D, Gillard R, Goh YM, Golob B, Haba J, Hasenbusch J, Hayashii H, He XH, Heller A, Horiguchi T, Hou WS, Huschle M, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Jaegle I, Joffe D, Julius T, Kang KH, Kato E, Kawasaki T, Kiesling C, Kim DY, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SH, Kim YJ, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kronenbitter B, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee IS, Li Y, Li Gioi L, Libby J, Liventsev D, Lukin P, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Moon HK, Nakano E, Nakao M, Nanut T, Natkaniec Z, Nayak M, Ng C, Nisar NK, Nishida S, Ogawa S, Okuno S, Olsen SL, Oswald C, Pakhlov P, Pakhlova G, Park CW, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ribežl E, Ritter M, Rostomyan A, Rozanska M, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sohn YS, Sokolov A, Solovieva E, Starič M, Steder M, Sumiyoshi T, Tamponi U, Taniguchi N, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vorobyev V, Wagner MN, Wang B, Wang CH, Wang MZ, Wang P, Watanabe Y, Williams KM, Won E, Yamaoka J, Yashchenko S, Yook Y, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We report the measurement of the direct CP asymmetry in the radiative B¯→X(s+dγ) decay using a data sample of (772 ± 11)×10(6) BB[over ¯] pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The CP asymmetry is measured as a function of the photon energy threshold. For Eγ*≥2.1 GeV, where Eγ* is the photon energy in the center-of-mass frame, we obtain A(CP)(B¯→X(s+dγ))=(2.2±3.9±0.9)%, consistent with the standard model prediction.
Published: 2015
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169. Observation of e+e- → π+π-π(0)(χbJ) and Search for X(b) → ωϒ(1S) at sqrt[s] = 10.867 GeV.

Author: He XH, Shen CP, Yuan CZ, Ban Y, Abdesselam A, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Ayad R, Bahinipati S, Bakich AM, Bansal V, Bhuyan B, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Cervenkov D, Chang P, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Farhat H, Fast JE, Ferber T, Gaur V, Gabyshev N, Ganguly S, Garmash A, Gillard R, Glattauer R, Goh YM, Grzymkowska O, Haba J, Hayasaka K, Hayashii H, Hou WS, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Jaegle I, Joo KK, Julius T, Kato E, Kawasaki T, Kim DY, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Li Y, Libby J, Liventsev D, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Mussa R, Nakano E, Nakao M, Nakazawa H, Nanut T, Natkaniec Z, Nedelkovska E, Nisar NK, Nishida S, Ogawa S, Okuno S, Pakhlov P, Pakhlova G, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Semmler D, Senyo K, Sevior ME, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sohn YS, Sokolov A, Solovieva E, Starič M, Steder M, Sumisawa K, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Thorne F, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Wehle S, Williams KM, Won E, Yamaoka J, Yashchenko S, Yook Y, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: The e(+)e(-) → π(+)π(-)π(0)χ(bJ) (J = 0,1,2) processes are studied using a 118 fb(-1) data sample acquired with the Belle detector at a center-of-mass energy of 10.867 GeV. Unambiguous π(+)π(-)π(0)χ(bJ) (J = 1,2), ωχ(b1) signals are observed, and indication for ωχ(b2) is seen, both for the first time, and the corresponding cross section measurements are presented. No significant π(+)π(-)π(0)χ(b0) or ωχ(b0) signals are observed, and 90% confidence level upper limits on the cross sections for these two processes are obtained. In the π(+)π(-)π(0) invariant mass spectrum, significant non-ω signals are also observed. We search for the X(3872)-like state (named X(b)) decaying into ωϒ(1S); no significant signal is observed with a mass between 10.55 and 10.65 GeV/c(2).
Published: 2014
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170. Measurement of the branching fraction B(Λc+ → pK-π+).

Author: Zupanc A, Bartel C, Gabyshev N, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Bakich AM, Bala A, Belous K, Bhuyan B, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chang MC, Chekelian V, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Dutta D, Dutta K, Eidelman S, Epifanov D, Farhat H, Fast JE, Feindt M, Ferber T, Gaur V, Ganguly S, Garmash A, Gillard R, Glattauer R, Goh YM, Golob B, Haba J, Hayasaka K, Hayashii H, He XH, Hoshi Y, Hou WS, Huschle M, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Iwashita T, Jaegle I, Julius T, Kang JH, Kato E, Kato Y, Kawasaki T, Kichimi H, Kim DY, Kim HJ, Kim JB, Kim JH, Kim MJ, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kronenbitter B, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lee SH, Li J, Li Y, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, MacNaughton J, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Mussa R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nayak M, Nedelkovska E, Niiyama M, Nisar NK, Nishida S, Nitoh O, Ogawa S, Olsen SL, Ostrowicz W, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Ryu S, Sahoo H, Saito T, Sakai Y, Sandilya S, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Semmler D, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Steder M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Unno Y, Uno S, Urquijo P, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wagner MN, Wang CH, Wang P, Wang XL, Watanabe M, Watanabe Y, Williams KM, Won E, Yamamoto H, Yamashita Y, Yashchenko S, Yook Y, Zhang ZP, Zhilich V, and Zhulanov V
Abstract: We present the first model-independent measurement of the absolute branching fraction of the Λ(c)(+) → pK(-)π(+) decay using a data sample of 978 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The number of Λ(c)(+) baryons is determined by reconstructing the recoiling D((*)-) pπ(+) system in events of the type e(+)e(-) → D((*)-) pπ(+)Λ(c)(+). The branching fraction is measured to be B(Λ(c)(+) → pK(-)π(+)) = (6.84 ± 0.24(-0.27)(+0.21))%, where the first and second uncertainties are statistical and systematic, respectively.
Published: 2014
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171. Observation of D0-D0 mixing in e+e- collisions.

Author: Ko BR, Won E, Adachi I, Aihara H, Arinstein K, Asner DM, Aulchenko V, Aushev T, Bala A, Bhardwaj V, Bhuyan B, Bobrov A, Bondar A, Bozek A, Bračko M, Browder TE, Cervenkov D, Chen A, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Dutta D, Dutta K, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Gaur V, Ganguly S, Garmash A, Gillard R, Glattauer R, Goh YM, Golob B, Haba J, Hara T, Hayashii H, He XH, Higuchi T, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Iwashita T, Jaegle I, Julius T, Kawasaki T, Kiesling C, Kim DY, Kim JB, Kim JH, Kim MJ, Kim YJ, Klucar J, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu ZQ, Lukin P, Matvienko D, Miyabayashi K, Miyata H, Mohanty GB, Moll A, Mussa R, Nagasaka Y, Nakano E, Nakao M, Natkaniec Z, Nayak M, Nedelkovska E, Nisar NK, Nitoh O, Ogawa S, Okuno S, Pakhlova G, Park CW, Park HK, Pedlar TK, Peng T, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Ryu S, Sahoo H, Sakai Y, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Seidl R, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Singh JB, Sohn YS, Sokolov A, Stanič S, Starič M, Steder M, Sumiyoshi T, Tamponi U, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Usov Y, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Watanabe Y, Yamamoto H, Yamashita Y, Yashchenko S, Yook Y, Zhang CC, Zhang ZP, Zhilich V, and Zupanc A
Abstract: We observe D(0)-D(0) mixing in the decay D(0) → K+π- using a data sample of integrated luminosity 976 fb(-1) collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. We measure the mixing parameters x'(2) = (0.09 ± 0.22) × 10(-3) and y'=(4.6 ± 3.4) × 10(-3) and the ratio of doubly Cabibbo-suppressed to Cabibbo-favored decay rates R(D) = (3.53 ± 0.13) × 10(-3), where the uncertainties are statistical and systematic combined. Our measurement excludes the no-mixing hypothesis at the 5.1 standard deviation level.
Published: 2014
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172. Measurement of the τ-lepton lifetime at Belle.

Author: Belous K, Shapkin M, Sokolov A, Adachi I, Aihara H, Asner DM, Aulchenko V, Bakich AM, Bala A, Bhuyan B, Bobrov A, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Doležal Z, Dutta D, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Gaur V, Ganguly S, Garmash A, Gillard R, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Iijima T, Inami K, Ishikawa A, Itoh R, Iwashita T, Jaegle I, Julius T, Kato E, Kichimi H, Kiesling C, Kim DY, Kim HJ, Kim JB, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Libby J, Liventsev D, Lukin P, Matvienko D, Miyata H, Mizuk R, Mohanty GB, Mori T, Mussa R, Nagasaka Y, Nakano E, Nakao M, Nayak M, Nedelkovska E, Ng C, Nisar NK, Nishida S, Nitoh O, Ogawa S, Okuno S, Olsen SL, Ostrowicz W, Pakhlova G, Park CW, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Ryu S, Sahoo H, Saito T, Sakai Y, Sandilya S, Santel D, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Semmler D, Senyo K, Seon O, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sohn YS, Stanič S, Starič M, Steder M, Sumiyoshi T, Tamponi U, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wagner MN, Wang CH, Wang P, Watanabe M, Watanabe Y, Williams KM, Won E, Yamaoka J, Yamashita Y, Yashchenko S, Yook Y, Yuan CZ, Zhang ZP, Zhilich V, and Zupanc A
Subjects: Quantum Theory, Elementary Particles, Models, Theoretical, Nuclear Physics methods
Abstract: The lifetime of the τ lepton is measured using the process e+ e- → τ+ τ- , where both τ leptons decay to 3πν(τ). The result for the mean lifetime, based on 711 fb(-1) of data collected with the Belle detector at the ϒ(4S) resonance and 60 MeV below, is τ=(290.17±0.53(stat)±0.33(syst))×10(-15) s. The first measurement of the lifetime difference between τ+ and τ- is performed. The upper limit on the relative lifetime difference between positive and negative τ leptons is |Δτ|/τ<7.0×10(-3) at 90% C.L.
Published: 2014
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173. Search for bottomonium states in exclusive radiative Υ(2S) decays.

Author: Sandilya S, Trabelsi K, Mohanty GB, Adachi I, Aihara H, Asner DM, Aushev T, Aziz T, Bakich AM, Bala A, Bhardwaj V, Bhuyan B, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Chen P, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Dingfelder J, Doležal Z, Drutskoy A, Dutta D, Eidelman S, Farhat H, Fast JE, Feindt M, Ferber T, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Julius T, Kah DH, Kang JH, Kato E, Kawai H, Kawasaki T, Kiesling C, Kim DY, Kim HO, Kim JB, Kim JH, Kim YJ, Klucar J, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu ZQ, Liventsev D, Lukin P, MacNaughton J, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Moll A, Muramatsu N, Mussa R, Nagasaka Y, Nakao M, Nayak M, Ng C, Nisar NK, Nishida S, Nitoh O, Ogawa S, Okuno S, Oswald C, Pakhlova G, Park CW, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Ryu S, Sahoo H, Saito T, Sakai K, Sakai Y, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Semmler D, Senyo K, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Steder M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Wiechczynski J, Williams KM, Won E, Yabsley BD, Yamaoka J, Yamashita Y, Yashchenko S, Yuan CZ, Yusa Y, Zhang CC, Zhang ZP, Zhilich V, and Zupanc A
Subjects: Monte Carlo Method, Elementary Particle Interactions, Models, Theoretical, Nuclear Physics methods
Abstract: We search for bottomonium states in Υ(2S) → (bb)γ decays with an integrated luminosity of 24.7 fb(-1) recorded at the Υ(2S) resonance with the Belle detector at KEK, containing (157.8±3.6)×10(6) Υ(2S) events. The (bb) system is reconstructed in 26 exclusive hadronic final states composed of charged pions, kaons, protons, and K(S)(0) mesons. We find no evidence for the state recently observed around 9975 MeV (X(bb)) in an analysis based on a data sample of 9.3×10(6) Υ(2S) events collected with the CLEO III detector. We set a 90% confidence level upper limit on the branching fraction B[Υ(2S) → X(bb)γ] × ∑(i)B[X(bb) → h(i)] < 4.9×10(-6), summed over the exclusive hadronic final states employed in our analysis. This result is an order of magnitude smaller than the measurement reported with CLEO data. We also set an upper limit for the ηb(1S) state of B[Υ(2S) → ηb(1S)γ] × ∑(i)B[ηb(1S) → h(i)] < 3.7×10(-6).
Published: 2013
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174. Precision measurement of charged pion and kaon differential cross sections in e+ e- annihilation at sqrt[s]=10.52 GeV.

Author: Leitgab M, Seidl R, Grosse Perdekamp M, Vossen A, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Bakich AM, Bhuyan B, Bondar A, Bozek A, Bračko M, Brodzicka J, Browder TE, Chekelian V, Chen A, Chen P, Cheon BG, Chilikin K, Cho K, Chobanova V, Choi Y, Cinabro D, Dalseno J, Drásal Z, Dutta D, Eidelman S, Epifanov D, Farhat H, Fast JE, Gaur V, Gabyshev N, Gillard R, Giordano F, Goh YM, Golob B, Haba J, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Jacobs WW, Julius T, Kang JH, Kapusta P, Kato E, Kawasaki T, Kim HJ, Kim HO, Kim JB, Kim JH, Kim MJ, Klucar J, Ko BR, Kodyš P, Kouzes RT, Križan P, Krokovny P, Kumar R, Kumita T, Kwon YJ, Lange JS, Lee SH, Li Y, Liu ZQ, Liventsev D, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Moll A, Muramatsu N, Nakano E, Nakao M, Natkaniec Z, Nayak M, Nedelkovska E, Ng C, Nisar NK, Nitoh O, Ogawa A, Ogawa S, Ohshima T, Okuno S, Olsen SL, Oswald C, Pakhlov P, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Sahoo H, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Schneider O, Schnell G, Schwanda C, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Tatishvili G, Teramoto Y, Tsuboyama T, Uchida M, Uglov T, Unno Y, Uno S, Usov Y, Van Hulse C, Varner G, Vorobyev V, Wagner MN, Wang CH, Wang J, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Won E, Yamashita Y, Zhilich V, and Zhulanov V
Abstract: Measurements of inclusive differential cross sections for charged pion and kaon production in e+ e- annihilation have been carried out at a center-of-mass energy of sqrt[s]=10.52 GeV. The measurements were performed with the Belle detector at the KEKB e+ e- collider using a data sample containing 113×10(6) e+ e- → qq events, where q={u,d,s,c}. We present charge-integrated differential cross sections dσ(h±)/dz for h±={π±,K±} as a function of the relative hadron energy z=2E(h)/sqrt[s] from 0.2 to 0.98. The combined statistical and systematic uncertainties for π± (K±) are 4% (4%) at z∼0.6 and 15% (24%) at z∼0.9. The cross sections are the first measurements of the z dependence of pion and kaon production for z>0.7 as well as the first precision cross section measurements at a center-of-mass energy far below the Z0 resonance used by the experiments at LEP and SLC.
Published: 2013
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175. Evidence of a new narrow resonance decaying to χ(c1)γ in B→χ(c1)γK.

Author: Bhardwaj V, Miyabayashi K, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bala A, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bračko M, Brodzicka J, Browder TE, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Dutta K, Eidelman S, Epifanov D, Farhat H, Fast JE, Ferber T, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hara T, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwashita T, Julius T, Kah DH, Kang JH, Kato E, Kawasaki T, Kichimi H, Kiesling C, Kim DY, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Liu C, Liu ZQ, Liventsev D, Lukin P, Matvienko D, Miyata H, Mizuk R, Mohanty GB, Moll A, Mussa R, Nakano E, Nakao M, Natkaniec Z, Nayak M, Nedelkovska E, Nisar NK, Nishida S, Nitoh O, Ogawa S, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Panzenböck E, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Sahoo H, Saito T, Sakai K, Sakai Y, Sandilya S, Santel D, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Seidl R, Semmler D, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Steder M, Sumihama M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Urquijo P, Usov Y, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Varvell KE, Vinokurova A, Wagner MN, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Won E, Yabsley BD, Yamaoka J, Yamashita Y, Yashchenko S, Yook Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We report measurements of B→χ(c1)γK and χ(c2)γK decays using 772×10(6) BB[over ¯] events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. Evidence of a new resonance in the χ(c1)γ final state is found with a statistical significance of 3.8σ. This state has a mass of 3823.1±1.8(stat)±0.7(syst) MeV/c(2), a value that is consistent with theoretical expectations for the previously unseen 1(3)D(2) cc[over ¯] meson. We find no other narrow resonance and set upper limits on the branching fractions of the X(3872)→χ(c1)γ and χ(c2)γ decays.
Published: 2013
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176. Study of e+ e- → π+ π- J/ψ and observation of a charged charmoniumlike state at Belle.

Author: Liu ZQ, Shen CP, Yuan CZ, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bala A, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bračko M, Brodzicka J, Browder TE, Chang P, Chekelian V, Chen A, Chen P, Cheon BG, Chistov R, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Dutta K, Eidelman S, Epifanov D, Farhat H, Fast JE, Feindt M, Ferber T, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Joffe D, Julius T, Kah DH, Kang JH, Kawasaki T, Kiesling C, Kim HJ, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Lukin P, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Mussa R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nayak M, Nedelkovska E, Nisar NK, Nishida S, Nitoh O, Ogawa S, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Oswald C, Pakhlov P, Pakhlova G, Park H, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Rostomyan A, Sahoo H, Saito T, Sakai Y, Sandilya S, Santel D, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Seidl R, Semmler D, Senyo K, Seon O, Sevior ME, Shapkin M, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Steder M, Sumihama M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Vahsen SE, Van Hulse C, Vanhoefer P, Varner G, Varvell KE, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Won E, Yabsley BD, Yamaoka J, Yamashita Y, Yashchenko S, Yook Y, Yusa Y, Zhang CC, Zhang ZP, Zhilich V, and Zupanc A
Abstract: The cross section for ee+ e- → π+ π- J/ψ between 3.8 and 5.5 GeV is measured with a 967 fb(-1) data sample collected by the Belle detector at or near the Υ(nS) (n = 1,2,…,5) resonances. The Y(4260) state is observed, and its resonance parameters are determined. In addition, an excess of π+ π- J/ψ production around 4 GeV is observed. This feature can be described by a Breit-Wigner parametrization with properties that are consistent with the Y(4008) state that was previously reported by Belle. In a study of Y(4260) → π+ π- J/ψ decays, a structure is observed in the M(π(±)J/ψ) mass spectrum with 5.2σ significance, with mass M = (3894.5 ± 6.6 ± 4.5) MeV/c2 and width Γ = (63 ± 24 ± 26) MeV/c2, where the errors are statistical and systematic, respectively. This structure can be interpreted as a new charged charmoniumlike state.
Published: 2013
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177. Search for an H-dibaryon with a mass near 2mΛ in Υ(1S) and Υ(2S) decays.

Author: Kim BH, Olsen SL, Adachi I, Aihara H, Asner DM, Aulchenko V, Bay A, Belous K, Bhuyan B, Bonvicini G, Bozek A, Bračko M, Browder TE, Chekelian V, Chen A, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Chobanova V, Choi SK, Choi Y, Cinabro D, Dalseno J, Doležal Z, Eidelman S, Epifanov D, Esen S, Farhat H, Fast JE, Gaur V, Ganguly S, Gillard R, Goh YM, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Julius T, Kah DH, Kang JH, Kapusta P, Kato E, Kichimi H, Kim HJ, Kim HO, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Kouzes RT, Križan P, Krokovny P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li X, Li Y, Libby J, Liventsev D, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Muramatsu N, Mussa R, Nakano E, Nakao M, Nedelkovska E, Ng C, Nisar NK, Nishida S, Nishimura K, Ohshima T, Okuno S, Pakhlov P, Pakhlova G, Park H, Park HK, Peters M, Petrič M, Piilonen LE, Ritter M, Ryu S, Sahoo H, Sakai Y, Sandilya S, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Semmler D, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Van Hulse C, Varner G, Vorobyev V, Wagner MN, Wang CH, Wang P, Watanabe Y, Williams KM, Won E, Yamashita Y, Zhilich V, and Zupanc A
Abstract: We report the results of a high-statistics search for H dibaryon production in inclusive Υ(1S) and Υ(2S) decays. No indication of an H dibaryon with a mass near the M(H)=2m(Λ) threshold is seen in either the H→Λpπ(-) or ΛΛ decay channels and 90% confidence level branching-fraction upper limits are set that are between one and two orders of magnitude below the measured branching fractions for inclusive Υ(1S) and Υ(2S) decays to antideuterons. Since Υ(1S,2S) decays produce flavor-SU(3)-symmetric final states, these results put stringent constraints on H dibaryon properties. The results are based on analyses of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector at the KEKB e(+)e(-) collider.
Published: 2013
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178. Evidence for B- → τ- ν(τ) with a hadronic tagging method using the full data sample of Belle.

Author: Hara K, Horii Y, Iijima T, Adachi I, Aihara H, Asner DM, Aushev T, Aziz T, Bakich AM, Barrett M, Bhardwaj V, Bhuyan B, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Chekelian V, Chen A, Chen P, Cheon BG, Chilikin K, Cho IS, Cho K, Choi Y, Cinabro D, Dalseno J, Dingfelder J, Doležal Z, Drásal Z, Drutskoy A, Dutta D, Eidelman S, Epifanov D, Esen S, Farhat H, Frey A, Gaur V, Gabyshev N, Ganguly S, Gillard R, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Higuchi T, Hoshi Y, Inami K, Ishikawa A, Itoh R, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Klucar J, Ko BR, Kodyš P, Korpar S, Kouzes RT, Križan P, Krokovny P, Kronenbitter B, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nayak M, Ng C, Nisar NK, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Oswald C, Ozaki H, Pakhlov P, Pakhlova G, Park CW, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sandilya S, Santel D, Sanuki T, Sato Y, Schneider O, Schnell G, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Unno Y, Uno S, Urquijo P, Ushiroda Y, Usov Y, Van Hulse C, Vanhoefer P, Varner G, Varvell KE, Vorobyev V, Wagner MN, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Subjects: Elementary Particles, Nuclear Physics methods, Quantum Theory
Abstract: We measure the branching fraction of B- → τ- ν(τ) using the full Υ(4S) data sample containing 772×10(6) BB pairs collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. Events with BB pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B- → τ- ν(τ) candidates are detected in the recoil. We find evidence for B- → τ- ν(τ) with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B- → τ- ν(τ))=[0.72(-0.25)(+0.27)(stat)±0.11(syst)]×10(-4).
Published: 2013
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179. Evidence for the η(b)(2S) and observation of h(b)(1P)→η(b)(1S)γ and h(b)(2P)→η(b)(1S)γ.

Author: Mizuk R, Asner DM, Bondar A, Pedlar TK, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bay A, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bonvicini G, Bozek A, Bračko M, Brodzicka J, Browder TE, Chekelian V, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Garmash A, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Jaegle I, Julius T, Kang JH, Kapusta P, Kawasaki T, Kim HJ, Kim HO, Kim JH, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Koblitz S, Kodyš P, Korpar S, Kouzes RT, Križan P, Krokovny P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Mohanty GB, Mohapatra D, Moll A, Muramatsu N, Mussa R, Nakao M, Natkaniec Z, Ng C, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park CW, Park H, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Sakai Y, Sandilya S, Santel D, Sanuki T, Sato Y, Schneider O, Schwanda C, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Tanida K, Tatishvili G, Teramoto Y, Tikhomirov I, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Vanhoefer P, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamaoka J, Yamashita Y, Yuan CZ, Zhang ZP, and Zhilich V
Subjects: Photons, Nuclear Physics methods, Quantum Theory
Abstract: We report the first evidence for the η(b)(2S) using the h(b)(2P)→η(b)(2S)γ transition and the first observation of the h(b)(1P)→η(b)(1S)γ and h(b)(2P)→η(b)(1S)γ transitions. The mass and width of the η(b)(1S) and η(b)(2S) are measured to be m(η(b)(1S))=(9402.4±1.5±1.8) MeV/c(2), m(η(b)(2S))=(9999.0±3.5(-1.9)(+2.8)) MeV/c(2), and Γ(η(b)(1S))=(10.8(-3.7-2.0)(+4.0+4.5)) MeV. We also update the h(b)(1P) and h(b)(2P) mass measurements. We use a 133.4 fb(-1) data sample collected at energies near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
Published: 2012
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180. Evidence for CP violation in the decay D+ → K(S)(0)π+.

Author: Ko BR, Won E, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Chang MC, Chen A, Chen P, Cheon BG, Chilikin K, Cho IS, Cho K, Choi Y, Doležal Z, Drásal Z, Eidelman S, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Koblitz S, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Lim CL, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Pakhlov P, Pakhlova G, Park CW, Park HK, Park KS, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wang CH, Wang P, Wang XL, Watanabe M, Watanabe Y, Yamamoto H, Yamashita Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We observe evidence for CP violation in the decay D+ → K(S)(0)π+ using a data sample with an integrated luminosity of 977 fb(-1) collected by the Belle detector at the KEKB e+ e- asymmetric-energy collider. The CP asymmetry in the decay is measured to be (-0.363±0.094±0.067)%, which is 3.2 standard deviations away from zero, and is consistent with the expected CP violation due to the neutral kaon in the final state.
Published: 2012
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181. Observation of new resonant structures in γγ → ωϕ, ϕϕ, and ωω.

Author: Liu ZQ, Shen CP, Yuan CZ, Iijima T, Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Bakich AM, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Chen P, Cheon BG, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drásal Z, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Ko BR, Koblitz S, Kodyš P, Korpar S, Križan P, Krokovny P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li XR, Li Y, Libby J, Liu C, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Mussa R, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Ng C, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park CW, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumiyoshi T, Tatishvili G, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Vinokurova A, Vorobyev V, Wang CH, Wang P, Wang XL, Watanabe M, Watanabe Y, Williams KM, Won E, Yamashita Y, Yusa Y, Zhang CC, Zhang ZP, Zhilich V, and Zhulanov V
Abstract: The processes γγ → ωϕ, ϕϕ, and ωω are measured using an 870 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. Production of vector meson pairs is clearly observed and their cross sections are measured for masses that range from threshold to 4.0 GeV. In addition to signals from well established spin-zero and spin-two charmonium states, there are resonant structures below charmonium threshold, which have not been previously observed. We report a spin-parity analysis for the new structures and determine the products of the η(c), χ(c0), and χ(c2) two-photon decay widths and branching fractions to ωϕ, ϕϕ, and ωω.
Published: 2012
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182. First observation of B(s)(0) → J/ψη and B(s)(0) → J/ψη'.

Author: Li J, Adachi I, Aihara H, Arinstein K, Asner DM, Aulchenko V, Aushev T, Bakich AM, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Brovchenko O, Browder TE, Chang MC, Chen A, Chen P, Cheon BG, Chistov R, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drutskoy A, Eidelman S, Esen S, Fast JE, Gaur V, Garmash A, Goh YM, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kim HJ, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Li Y, Libby J, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Muramatsu N, Nakamura I, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Pakhlova G, Park CW, Park HK, Park KS, Pedlar TK, Peng T, Pestotnik R, Petrič M, Piilonen LE, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Smerkol P, Sohn YS, Sokolov A, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vorobyev V, Vossen A, Wang CH, Wang P, Watanabe M, Watanabe Y, Wicht J, Williams KM, Won E, Yamashita Y, Yuan CZ, Zhang ZP, Zhilich V, and Zupanc A
Subjects: Quantum Theory, Elementary Particles
Abstract: We report first observations of B(s)(0) → J/ψη and B(s)(0) → J/ψη'. The results are obtained from 121.4 fb(-1) of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e+ e- collider. We obtain the branching fractions B(B(s)(0) → J/ψη)=[5.10±0.50(stat)±0.25(syst)(-0.79)(+1.14)(N(B(s)(*) B(s)(*))]×10(-4), and B(B(s)(0) → J/ψη')=[3.71±0.61(stat)±0.18(syst)(-0.57)(+0.83)(N(B(s)(*) B(s)(*))]×10(-4). The ratio of the two branching fractions is measured to be (B(B(s) → J/ψη'))/(B(B(s) → J/ψη))=0.73±0.14(stat)±0.02(syst).
Published: 2012
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183. Precise measurement of the CP violation parameter sin2φ1 in B0→(cc¯)K0 decays.

Author: Adachi I, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bay A, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chen P, Cheon BG, Chilikin K, Chistov R, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drásal Z, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Haba J, Hara K, Hara T, Hayasaka K, Hayashii H, Higuchi T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim YJ, Kinoshita K, Ko BR, Koblitz S, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Liu C, Liu Y, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mori T, Muramatsu N, Nakano E, Nakao M, Nakazawa H, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ozaki H, Pakhlov P, Pakhlova G, Park HK, Park KS, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Rozanska M, Sahoo H, Sakai K, Sakai Y, Sanuki T, Sato Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumisawa K, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Tikhomirov I, Trabelsi K, Tsuboyama T, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Ushiroda Y, Vahsen SE, Varner G, Varvell KE, Vinokurova A, Vorobyev V, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamamoto H, Yamashita Y, Yamauchi M, Yusa Y, Zhang ZP, Zhilich V, Zupanc A, and Zyukova O
Abstract: We present a precise measurement of the CP violation parameter sin2φ1 and the direct CP violation parameter A(f) using the final data sample of 772×10(6) BB[over ¯] pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. One neutral B meson is reconstructed in a J/ψK(S)(0), ψ(2S)K(S)(0), χ(c1)K(S)(0), or J/ψK(L)(0) CP eigenstate and its flavor is identified from the decay products of the accompanying B meson. From the distribution of proper-time intervals between the two B decays, we obtain the following CP violation parameters: sin2φ1=0.667±0.023(stat)±0.012(syst) and A(f)=0.006±0.016(stat)±0.012(syst).
Published: 2012
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184. Measurement of the CP-violation parameter sin2φ1 with a new tagging method at the Υ(5S) resonance.

Author: Sato Y, Yamamoto H, Aihara H, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang P, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drásal Z, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kapusta P, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Liu C, Liu ZQ, Louvot R, McOnie S, Miyabayashi K, Miyata H, Mizuk R, Mohanty GB, Moll A, Muramatsu N, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Ostrowicz W, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pedlar TK, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Ryu S, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shibata TA, Shiu JG, Shwartz B, Sibidanov A, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Varvell KE, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe M, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We report a measurement of the CP-violation parameter sin2φ1 at the Υ(5S) resonance using a new tagging method, called "B-π tagging." In Υ(5S) decays containing a neutral B meson, a charged B, and a charged pion, the neutral B is reconstructed in the J/ψK(S)(0) CP-eigenstate decay channel. The initial flavor of the neutral B meson at the moment of the Υ(5S) decay is opposite to that of the charged B and may thus be inferred from the charge of the pion without reconstructing the charged B. From the asymmetry between B-π(+) and B-π(-) tagged J/ψK(S)(0) yields, we determine sin2φ1=0.57±0.58(stat)±0.06(syst). The results are based on 121 fb(-1) of data recorded by the Belle detector at the KEKB e(+)e(-) collider.
Published: 2012
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185. Observation of two charged bottomoniumlike resonances in Υ(5S) decays.

Author: Bondar A, Garmash A, Mizuk R, Santel D, Kinoshita K, Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Aziz T, Bakich AM, Barberio E, Belous K, Bhardwaj V, Bischofberger M, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drutskoy A, Eidelman S, Epifanov D, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hoshi Y, Hyun HJ, Iijima T, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kichimi H, Kiesling C, Kim JB, Kim JH, Kim KT, Kim MJ, Kim YJ, Ko BR, Kobayashi N, Koblitz S, Kodyš P, Korpar S, Križan P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu ZQ, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyata H, Miyazaki Y, Mohanty GB, Moll A, Muramatsu N, Mussa R, Nakao M, Natkaniec Z, Neubauer S, Niiyama M, Nishida S, Nishimura K, Nitoh O, Nozaki T, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Park HK, Pedlar TK, Petrič M, Piilonen LE, Poluektov A, Prim M, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Santel D, Sanuki T, Schneider O, Schwanda C, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Sumiyoshi T, Tanaka S, Tatishvili G, Teramoto Y, Tikhomirov I, Uchida M, Uehara S, Uglov T, Ushiroda Y, Vahsen SE, Varner G, Vinokurova A, Wang CH, Wang MZ, Wang P, Wang XL, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamashita Y, Yamauchi M, Yuan CZ, Yusa Y, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, and Zyukova O
Subjects: Quantum Theory, Elementary Particles
Abstract: We report the observation of two narrow structures in the mass spectra of the π(±)Υ(nS) (n=1, 2, 3) and π(±)h(b)(mP) (m=1, 2) pairs that are produced in association with a single charged pion in Υ(5S) decays. The measured masses and widths of the two structures averaged over the five final states are M(1)=(10,607.2±2.0) MeV/c2, Γ(1)=(18.4±2.4) MeV, and M(2)=(10,652.2±1.5) MeV/c2, Γ(2)=(11.5±2.2) MeV. The results are obtained with a 121.4 fb(-1) data sample collected with the Belle detector in the vicinity of the Υ(5S) resonance at the KEKB asymmetric-energy e+ e- collider.
Published: 2012
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186. Search for CP violation in D± meson decays to ϕπ±.

Author: Starič M, Aihara H, Arinstein K, Asner DM, Aushev T, Bakich AM, Bay A, Bhardwaj V, Bhuyan B, Bozek A, Bračko M, Browder TE, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi Y, Doležal Z, Drásal Z, Eidelman S, Fast JE, Gaur V, Gabyshev N, Golob B, Haba J, Hayasaka K, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HJ, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Koblitz S, Kodyš P, Korpar S, Križan P, Kumita T, Kwon YJ, Lange JS, Lee SH, Li J, Li Y, Libby J, Liu C, Liu ZQ, Louvot R, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakano E, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Pakhlova G, Park HK, Park KS, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Seon O, Sevior ME, Shebalin V, Shen CP, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Stanič S, Sumihama M, Sumisawa K, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Varner G, Vossen A, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Williams KM, Won E, Yabsley BD, Yamashita Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhulanov V, and Zupanc A
Abstract: We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP-violating asymmetries for the Cabibbo-suppressed decays D(±)→K(+)K(-)π(±) and the Cabibbo-favored decays D(s)(±)→K(+)K(-)π(±) in the K(+)K(-) mass region of the ϕ resonance. Using 955 fb(-1) of data collected with the Belle detector, we obtain A(CP)(D+→ϕπ+)=(+0.51±0.28±0.05)%. The measurement improves the sensitivity of previous searches by more than a factor of 5. We find no evidence for direct CP violation.
Published: 2012
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187. Evidence for direct CP violation in B±→ηh± and observation of B0→ηK0.

Author: Hoi CT, Chang P, Aihara H, Asner DM, Aushev T, Bakich AM, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang MC, Chao Y, Chen A, Chen KF, Chen P, Cheon BG, Chilikin K, Cho K, Choi Y, Danilov M, Drásal Z, Drutskoy A, Eidelman S, Fast JE, Gaur V, Gabyshev N, Goh YM, Golob B, Haba J, Hayasaka K, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Kang JH, Kawasaki T, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kinoshita K, Ko BR, Kobayashi N, Kodyš P, Korpar S, Križan P, Kuhr T, Kumita T, Kwon YJ, Lee SH, Li J, Libby J, Liu ZQ, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Mohanty GB, Moll A, Nakano E, Nakao M, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Park CW, Park HK, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Ritter M, Röhrken M, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Starič M, Sumihama M, Tanaka S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uglov T, Unno Y, Uno S, Varner G, Wang CH, Wang MZ, Wang P, Watanabe Y, Williams KM, Won E, Yamaoka J, Yamashita Y, Yusa Y, Zhilich V, and Zupanc A
Subjects: Monte Carlo Method, Uncertainty, Elementary Particles
Abstract: We report measurements of the branching fractions and CP asymmetries for B(±)→ηh(±) (h=K or π) and the observation of the decay B(0)→ηK(0) from the final data sample of 772×10(6) B ̅B pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The measured branching fractions are B(B(±)→ηK(±))=(2.12±0.23±0.11)×10(-6), B(B(±)→ηπ(±))=(4.07±0.26±0.21)×10(-6), and B(B(0)→ηK(0))=(1.27(-0.29)(+0.33)±0.08)×10(-6), where the last decay is observed for the first time with a significance of 5.4 standard deviations (σ). We also find evidence for CP violation in the charged B modes, A(CP)(B(±)→ηK(±))=-0.38±0.11±0.01 and A(CP)(B(±)→ηπ(±))=-0.19±0.06±0.01 with significances of 3.8 σ and 3.0 σ, respectively. For all measurements, the first and second uncertainties are statistical and systematic, respectively., (© 2012 American Physical Society)
Published: 2012
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188. First observation of the P-wave spin-singlet bottomonium states hb(1P) and hb(2P).

Author: Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Aziz T, Bakich AM, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bondar A, Bračko M, Brodzicka J, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chilikin K, Chistov R, Cho IS, Cho K, Choi Y, Dalseno J, Danilov M, Drásal Z, Drutskoy A, Eidelman S, Epifanov D, Esen S, Fast JE, Feindt M, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Hara T, Hayasaka K, Hayashii H, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Iwabuchi M, Iwasaki Y, Jaegle I, Julius T, Kang JH, Katayama N, Kawasaki T, Kichimi H, Kim HO, Kim JB, Kim KT, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Koblitz S, Korpar S, Križan P, Kuhr T, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee SH, Li J, Libby J, Liu C, Liventsev D, Louvot R, MacNaughton J, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mussa R, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Pedlar TK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Ritter M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Tatishvili G, Teramoto Y, Tikhomirov I, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Vahsen SE, Varner G, Varvell KE, Vinokurova A, Wang CH, Wang XL, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Yuan CZ, Zhilich V, and Zupanc A
Subjects: Spectrum Analysis, Thermodynamics, Elementary Particles, Quantum Theory
Abstract: We report the first observations of the spin-singlet bottomonium states h(b)(1P) and h(b)(2P). The states are produced in the reaction e(+)e(-)→h(b)(nP)π(+)π(-) using a 121.4 fb(-1) data sample collected at energies near the Υ(5S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We determine M[h(b)(1P)]=(9898.2(-1.0-1.1)(+1.1+1.0)) MeV/c(2) and M[h(b)(2P)]=(10,259.8±0.6(-1.0)(+1.4)) MeV/c(2), which correspond to P-wave hyperfine splittings ΔM(HF)=(+1.7±1.5) and (+0.5(-1.2)(+1.6)) MeV/c(2), respectively. The significances of the h(b)(1P) and h(b)(2P) are 5.5σ and 11.2σ, respectively. We find that the production of the h(b)(1P) and h(b)(2P) is not suppressed relative to the production of the Υ(1S), Υ(2S), and Υ(3S)., (© 2012 American Physical Society)
Published: 2012
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189. Observation of D+ → K(+)η(') and search for CP violation in D+ → π(+)η(') decays.

Author: Won E, Ko BR, Adachi I, Aihara H, Arinstein K, Asner DM, Aushev T, Bakich AM, Barberio E, Bay A, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Brodzicka J, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chilikin K, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Fast JE, Gaur V, Gabyshev N, Garmash A, Goh YM, Golob B, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Joshi NJ, Julius T, Kang JH, Katayama N, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Kobayashi N, Koblitz S, Kodyš P, Korpar S, Križan P, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Li J, Li Y, Libby J, Lim CL, Liu C, Liu Y, Liventsev D, Louvot R, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Onuki Y, Pakhlov P, Pakhlova G, Park H, Park HK, Park KS, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai K, Sakai Y, Sanuki T, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shen CP, Shibata TA, Shiu JG, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Suzuki S, Tatishvili G, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Vahsen SE, Varner G, Vinokurova A, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Williams KM, Yabsley BD, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, and Zyukova O
Abstract: We report the first observation of the doubly Cabibbo-suppressed decays D(+)→K(+)η((')) using a 791 fb(-1) data sample collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The ratio of the branching fractions of doubly Cabibbo-suppressed relative to singly Cabibbo-suppressed D(+)→π(+)η((')) decays are B(D(+)→K(+)η)/B(D(+)→π(+)η)=(3.06±0.43±0.14)% and B(D(+)→K(+)η')/B(D(+)→π(+)η')=(3.77±0.39±0.10)%. From these, we find that the relative final-state phase difference between the tree and annihilation amplitudes in D(+) decays, δ(TA), is (72±9)° or (288±9)°. We also report the most precise measurements of CP asymmetries to date: A(CP)(D(+)→π(+)η)=(+1.74±1.13±0.19)% and A(CP)(D(+)→π(+)η')=(-0.12±1.12±0.17)%.
Published: 2011
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190. Search for CP violation in τ±→K(S)0π±ντ decays at Belle.

Author: Bischofberger M, Hayashii H, Adamczyk K, Aihara H, Aulchenko V, Bakich AM, Balagura V, Barberio E, Belous K, Bozek A, Bračko M, Browder TE, Chen P, Cheon BG, Chiang CC, Cho IS, Cho K, Choi Y, Danilov M, Doležal Z, Drutskoy A, Eidelman S, Epifanov D, Golob B, Ha H, Haba J, Hayasaka K, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Julius T, Kang JH, Kawai H, Kawasaki T, Kiesling C, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Križan P, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Li Y, Liu C, Louvot R, MacNaughton J, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Moll A, Mori T, Nagasaka Y, Nakano E, Nakao M, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Pakhlova G, Park H, Park HK, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Senyo K, Shapkin M, Shiu JG, Shwartz B, Simon F, Smerkol P, Sohn YS, Stanič S, Starič M, Sumiyoshi T, Teramoto Y, Trabelsi K, Uehara S, Uglov T, Uno S, Varner G, Vinokurova A, Vossen A, Wang CH, Wang P, Watanabe M, Watanabe Y, Won E, Yamamoto H, Yamashita Y, Yuan CZ, Zhou P, Zhulanov V, and Zivko T
Abstract: We report on a search for CP violation in τ(±)→K(S)(0)π(±)ν(τ) decays using a data sample of 699 fb(-1) collected by the Belle experiment at the KEKB electron-positron asymmetric-energy collider. The CP asymmetry is measured in four bins of the invariant mass of the K(S)(0)π(±) system and found to be compatible with zero with a precision of O(10(-3)) in each mass bin. Limits for the CP violation parameter Im(η(S)) are given at the 90% confidence level. These limits are |Im(η(S))| < 0.026 or better, depending on the parametrization used to describe the hadronic form factors, and improve upon previous limits by 1 order of magnitude.
Published: 2011
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191. Observation of X(3872)→J/ψγ and search for X(3872)→ψ'γ in B decays.

Author: Bhardwaj V, Trabelsi K, Singh JB, Choi SK, Olsen SL, Adachi I, Adamczyk K, Asner DM, Aulchenko V, Aushev T, Aziz T, Bakich AM, Barberio E, Belous K, Bhuyan B, Bischofberger M, Bondar A, Bračko M, Brodzicka J, Browder TE, Chen A, Chen P, Cheon BG, Cho K, Choi Y, Dalseno J, Doležal Z, Eidelman S, Epifanov D, Gaur V, Gabyshev N, Golob B, Haba J, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Joshi NJ, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim JB, Kim JH, Kim KT, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Korpar S, Križan P, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Li Y, Libby J, Lim CL, Liventsev D, Louvot R, Matvienko D, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mussa R, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Ng C, Nishida S, Nitoh O, Nozaki T, Ohshima T, Okuno S, Onuki Y, Pakhlova G, Park CW, Park HK, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Sahoo H, Sakai K, Sakai Y, Sanuki T, Schneider O, Schwanda C, Seon O, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Shwartz B, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Sumiyoshi T, Tatishvili G, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Varner G, Vossen A, Wang XL, Watanabe M, Watanabe Y, Williams KM, Yabsley BD, Yamashita Y, Yuan CZ, Zhang CC, Zhang ZP, Zhilich V, Zhou P, Zhulanov V, and Zupanc A
Abstract: We report a study of B→(J/ψγ)K and B→(ψ'γ)K decay modes using 772×10⁶ B ̅B events collected at the Υ(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. We observe X(3872)→J/ψγ and report the first evidence for χ(c2)→J/ψγ in B→(X_{c ̅cγ)K decays, while in a search for X(3872)→ψ'γ no significant signal is found. We measure the branching fractions, B(B(±)→X(3872)K(±))B(X(3872)→J/ψγ)=(1.78(-0.44)(+0.48)±0.12)×10(-6), B(B(±)→χ(c2)K(±))=(1.11(-0.34)(+0.36)±0.09)×10(-5), B(B(±)→X(3872)K(±))B(X(3872)→ψ'γ)<3.45×10⁶ (upper limit at 90% C.L.), and also provide upper limits for other searches., (© 2011 American Physical Society)
Published: 2011
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192. Observation of transverse polarization asymmetries of charged pion pairs in e+e- annihilation near √s = 10.58 GeV.

Author: Vossen A, Seidl R, Adachi I, Aihara H, Aushev T, Balagura V, Bartel W, Bischofberger M, Bondar A, Bračko M, Browder TE, Chang MC, Chen A, Chen P, Cheon BG, Cho K, Choi Y, Eidelman S, Feindt M, Gaur V, Gabyshev N, Garmash A, Golob B, Perdekamp MG, Haba J, Hayasaka K, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Inami K, Ishikawa A, Iwabuchi M, Iwasaki Y, Iwashita T, Joshi NJ, Kichimi H, Kim HO, Kim MJ, Ko BR, Kumita T, Lange JS, Lee MJ, Lee SH, Leitgab M, Li Y, Liu C, Liventsev D, Louvot R, McOnie S, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Nakano E, Nishida S, Nitoh O, Ogawa A, Ohshima T, Okuno S, Pakhlova G, Park H, Park HK, Petrič M, Piilonen LE, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Seon O, Shapkin M, Shebalin V, Shibata TA, Shiu JG, Smerkol P, Sohn YS, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Varner G, Vinokurova A, Wang CH, Wang MZ, Wang P, Watanabe Y, Won E, Yabsley BD, Yamashita Y, Zhilich V, Zhou P, and Zhulanov V
Abstract: The interference fragmentation function translates the fragmentation of a quark with a transverse projection of the spin into an azimuthal asymmetry of two final-state hadrons. In e(+)e(-) annihilation the product of two interference fragmentation functions is measured. We report nonzero asymmetries for pairs of charge-ordered π(+)π(-) pairs, which indicate a significant interference fragmentation function in this channel. The results are obtained from a 672 fb(-1) data sample that contains 711 × 10(6) π(+)π(-) pairs and was collected at and near the Υ(4S) resonance, with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider.
Published: 2011
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193. Evidence for the suppressed decay B(-)→DK(-), D→K(+)π(-).

Author: Horii Y, Trabelsi K, Yamamoto H, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Balagura V, Barberio E, Belous K, Bhuyan B, Bischofberger M, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Cho IS, Cho K, Choi Y, Doležal Z, Eidelman S, Feindt M, Gaur V, Gabyshev N, Garmash A, Golob B, Ha H, Haba J, Hayasaka K, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwasaki Y, Iwashita T, Joshi NJ, Julius T, Kang JH, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Korpar S, Križan P, Kuhr T, Kumar R, Kwon Y-, Lee MJ, Lee SH, Li J, Liu C, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Moll A, Mori T, Muramatsu N, Nakano E, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nitoh O, Ohshima T, Okuno S, Onuki Y, Pakhlov P, Pakhlova G, Park CW, Park HK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Prim M, Prothmann K, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shibata TA, Shiu JG, Simon F, Smerkol P, Sohn Y-, Solovieva E, Stanič S, Starič M, Sumihama M, Sumiyoshi T, Suzuki S, Tanaka S, Teramoto Y, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Usov Y, Varner G, Vinokurova A, Vossen A, Wang CH, Wang P, Watanabe M, Watanabe Y, Wicht J, Won E, Yabsley BD, Yamashita Y, Zander D, Zhang ZP, Zhulanov V, and Zupanc A
Abstract: The suppressed decay chain B(-)→DK(-), D→K(+)π(-), where D indicates a D(¯)(0) or D(0) state, provides important information on the CP-violating angle ϕ(3). We measure the ratio R(DK) of the decay rates to the favored mode B(-)→DK(-), D→K(-)π(+) to be R(DK)=[1.63(-0.41)(+0.44)(stat)(-0.13)(+0.07)(syst)]×10(-2), which indicates the first evidence of the signal with a significance of 4.1σ. We also measure the asymmetry A(DK) between the charge-conjugate decays to be A(DK)=-0.39(-0.28)(+0.26)(stat)(-0.03)(+0.04)(syst). The results are based on the full 772×10(6) BB(¯) pair data sample collected at the Υ(4S) resonance with the Belle detector.
Published: 2011
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194. Search for CP violation in the decays D(0)→K(S)(0)P(0).

Author: Ko BR, Won E, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bischofberger M, Bondar A, Bozek A, Bračko M, Brodzicka J, Browder TE, Chen A, Chen P, Cheon BG, Chiang CC, Cho IS, Cho K, Choi KS, Choi SK, Choi Y, Eidelman S, Epifanov D, Feindt M, Gabyshev N, Garmash A, Golob B, Ha H, Haba J, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Ishikawa A, Itoh R, Iwabuchi M, Iwashita T, Julius T, Kang JH, Kawasaki T, Kiesling C, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Kodyš P, Korpar S, Križan P, Kumar R, Kuzmin A, Kwon YJ, Kyeong SH, Lee MJ, Lee SH, Liu C, Liventsev D, Louvot R, Matyja A, Miyabayashi K, Miyata H, Miyazaki Y, Mizuk R, Mohanty GB, Mori T, Nakano E, Nakao M, Nishida S, Nishimura K, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Park CW, Park H, Park HK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Röhrken M, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Shwartz B, Simon F, Singh JB, Smerkol P, Sohn YS, Solovieva E, Stanič S, Starič M, Sumihama M, Sumisawa K, Sumiyoshi T, Tanaka S, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Usov Y, Varner G, Varvell KE, Vinokurova A, Wang CH, Wang MZ, Watanabe Y, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zhulanov V, Zupanc A, and Zyukova O
Subjects: Uncertainty, Models, Theoretical, Physical Phenomena
Abstract: We have searched for CP violation in the decays D(0)→K(S)(0)P(0) where P(0) denotes a neutral pseudoscalar meson that is either a π(0), η, or η' using KEKB asymmetric-energy e(+)e(-) collision data corresponding to an integrated luminosity of 791 fb(-1) collected with the Belle detector. No evidence of significant CP violation is observed. We report the most precise CP asymmetry measurement in the decay D(0)→K(S)(0)π(0) to date: A(CP)(D(0)→K(S)(0)π(0))=(-0.28±0.19±0.10)%. We also report the first measurements of CP asymmetries in the decays D(0)→K(S)(0)η and D(0)→K(S)(0)η': A(CP)(D(0)→K(S)(0)η)=(+0.54±0.51±0.16)% and A(CP)(D(0)→K(S)(0)η')=(+0.98±0.67±0.14)%, respectively., (© 2011 American Physical Society)
Published: 2011
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195. Observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370).

Author: Li J, Aihara H, Arinstein K, Aulchenko V, Aushev T, Aziz T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bhuyan B, Bozek A, Bračko M, Brovchenko O, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Chistov R, Cho IS, Cho K, Choi SK, Choi Y, Dalseno J, Doležal Z, Drutskoy A, Eidelman S, Esen S, Feindt M, Gaur V, Gabyshev N, Garmash A, Golob B, Ha H, Haba J, Hara T, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Iwashita T, Julius T, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim MJ, Kim SK, Kim YJ, Kinoshita K, Ko BR, Kobayashi N, Korpar S, Križan P, Kuhr T, Kumar R, Kumita T, Kuzmin A, Kwon YJ, Lange JS, Lee MJ, Lee SH, Lim CL, Liu C, Liventsev D, Louvot R, MacNaughton J, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Moll A, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nishimura K, Nitoh O, Nozaki T, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Park CW, Park H, Park HK, Pestotnik R, Petrič M, Piilonen LE, Poluektov A, Prim M, Prothmann K, Röhrken M, Rozanska M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Shwartz B, Simon F, Singh JB, Smerkol P, Sohn YS, Sokolov A, Solovieva E, Stanič S, Starič M, Stypula J, Sumihama M, Sumiyoshi T, Suzuki S, Tanaka S, Teramoto Y, Trabelsi K, Uchida M, Uehara S, Unno Y, Uno S, Ushiroda Y, Usov Y, Vahsen SE, Varner G, Vinokurova A, Vossen A, Wang CH, Wang MZ, Watanabe M, Watanabe Y, Wicht J, Williams KM, Won E, Yabsley BD, Yamashita Y, Zander D, Zhang CC, Zhang ZP, Zhilich V, Zhou P, Zhulanov V, and Zupanc A
Abstract: We report the observation of B(s)⁰→J/ψf₀(980) and evidence for B(s)⁰→J/ψf₀(1370), which are CP eigenstate decay modes. These results are obtained from 121.4 fb⁻¹ of data collected at the Υ(5S) resonance with the Belle detector at the KEKB e(+)e⁻ collider. We measure the branching fractions B(B(s)⁰→J/ψf₀(980); f₀(980)→π(+)π⁻)=(1.16(-0.19)(+0.31)(stat)(-0.17)(+0.15)(syst)(-0.18)(+0.26)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 8.4σ, and B(B(s)⁰→J/ψf₀(1370); f₀(1370)→π(+)π⁻)=(0.34(-0.14)(+0.11)(stat)(-0.02)(+0.03)(syst)(-0.05)(+0.08)(N(B(s)((*))B(s)((*)))))×10⁻⁴ with a significance of 4.2σ. The last error listed is due to uncertainty in the number of produced B(s)((*))B(s)((*)) pairs.
Published: 2011
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196. Observation of B(s)(0) → D(s)()+ D(s)()- using e+ e- collisions and a determination of the B(s)-B(s) width difference ΔΓ(s).

Author: Esen S, Schwartz AJ, Adachi I, Aihara H, Arinstein K, Aulchenko V, Aushev T, Aziz T, Bakich AM, Balagura V, Barberio E, Bay A, Bischofberger M, Bondar A, Bozek A, Bračko M, Browder TE, Chang MC, Chang P, Chen A, Chen P, Cheon BG, Chiang CC, Choi Y, Dalseno J, Dash M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Higuchi T, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Joshi NJ, Julius T, Kang JH, Kawasaki T, Kichimi H, Kim HJ, Kim HO, Kim JH, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Korpar S, Križan P, Krokovny P, Kuhr T, Kumita T, Kwon YJ, Kyeong SH, Lange JS, Lee SH, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyata H, Mizuk R, Mohanty GB, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Neubauer S, Nishida S, Nitoh O, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Park CW, Park H, Park HK, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Senyo K, Sevior ME, Shapkin M, Shen CP, Shiu JG, Smerkol P, Solovieva E, Starič M, Sumisawa K, Sumiyoshi T, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Urquijo P, Usov Y, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Watanabe Y, Wedd R, Wicht J, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, and Zupanc A
Abstract: We have made the first observation of B(s)(0)→D(s)(*)+ D(s)(*)- decays using 23.6 fb(-1) of data recorded by the Belle experiment running on the Υ(5S) resonance. The branching fractions are measured to be B(B(s)(0)→D(s)+ D(s)-)=(1.03(-0.32-0.25)(+0.39+0.26))%, B(B(s)(0)→D(s)(*±) D(s)(∓))=(2.75(-0.71)(+0.83)±0.69)%, and B(B(s)(0)→D(s)*+ D(s)*-)=(3.08(-1.04-0.86)(+1.22+0.85))%; the sum is B[B(s)(0)→D(s)(*)+ D(s)(*)-]=(6.85(-1.30-1.80)(+1.53+1.79))%. Assuming B(s)(0)→D(s)(*)+ D(s)(*)- saturates decays to CP-even final states, the branching fraction determines the ratio ΔΓ(s)/cosφ, where ΔΓ(s) is the difference in widths between the two B(s)-B(s) mass eigenstates, and φ is a CP-violating weak phase. Taking CP violation to be negligibly small, we obtain ΔΓ(s)/Γ(s)=0.147(-0.030)(+0.036)(stat)(-0.041)(+0.042)(syst), where Γ(s) is the mean decay width.
Published: 2010
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197. First measurement of inclusive B→Xsη decays.

Author: Nishimura K, Browder TE, Adachi I, Aihara H, Arinstein K, Aushev T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bischofberger M, Bondar A, Bozek A, Bračko M, Chang MC, Chao Y, Chen A, Chen KF, Chen P, Cheon BG, Chiang CC, Cho IS, Choi Y, Dalseno J, Danilov M, Doležal Z, Drutskoy A, Eidelman S, Gabyshev N, Golob B, Ha H, Haba J, Hara T, Hayasaka K, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Iwasaki Y, Joshi NJ, Julius T, Kang JH, Kapusta P, Kawai H, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim HO, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodyš P, Korpar S, Križan P, Kumita T, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Mori T, Nakano E, Nakao M, Nakazawa H, Natkaniec Z, Nishida S, Ogawa S, Ohshima T, Olsen SL, Ostrowicz W, Pakhlova G, Park CW, Park H, Park HK, Park KS, Pestotnik R, Petrič M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Senyo K, Seon O, Sevior ME, Shapkin M, Shen CP, Shiu JG, Simon F, Smerkol P, Sokolov A, Solovieva E, Starič M, Sumiyoshi T, Suzuki S, Teramoto Y, Trabelsi K, Uehara S, Uglov T, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Watanabe Y, Wicht J, Williams KM, Won E, Yamashita Y, Yamauchi M, Zhang CC, Zhang ZP, Zhou P, Zhulanov V, Zivko T, Zupanc A, and Zyukova O
Abstract: We report a first measurement of inclusive B→Xsη decays, where Xs is a charmless state with unit strangeness. The measurement is based on a pseudoinclusive reconstruction technique and uses a sample of 657×10(6)BB pairs accumulated with the Belle detector at the KEKB e+e- collider. For MXs < 2.6 GeV/c2, we measure a branching fraction of [26.1±3.0(stat)-2.1+1.9(syst)-7.1+4.0(model)]×10(-5) and a direct CP asymmetry of ACP=-0.13±0.04-0.03+0.02. Over half of the signal occurs in the range MXs > 1.8 GeV/c2.
Published: 2010
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198. Search for a low mass particle decaying into μ+ μ- in B0 → K*0 X and B0 → ρ0 X at Belle.

Author: Hyun HJ, Park HK, Kim HO, Park H, Aihara H, Arinstein K, Aushev T, Bakich AM, Barberio E, Bay A, Belous K, Bischofberger M, Bondar A, Bozek A, Bracko M, Chang MC, Chang P, Chao Y, Chen A, Chen P, Cheon BG, Cho IS, Choi Y, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Gabyshev N, Golob B, Ha H, Hara T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Inami K, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kapusta P, Kawasaki T, Kichimi H, Kiesling C, Kim HJ, Kim JH, Kim MJ, Ko BR, Kodys P, Krizan P, Kuzmin A, Kwon YJ, Kyeong SH, Lange JS, Lee SH, Li J, Liventsev D, Louvot R, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakano E, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Olsen SL, Palka H, Park CW, Pestotnik R, Petric M, Piilonen LE, Ryu S, Sahoo H, Sakai Y, Schneider O, Sevior ME, Shapkin M, Shiu JG, Shwartz B, Singh JB, Stanic S, Staric M, Sumiyoshi T, Suzuki S, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Wang XL, Wedd R, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zhilich V, and Zyukova O
Subjects: Algorithms, Energy Transfer, Ions, Particle Accelerators, Models, Chemical, Nanoparticles chemistry, Nuclear Physics
Abstract: We search for dimuon decays of a low mass particle in the decays B0→K*0 X and B0→ρ0 X using a data sample of 657×10(6)BB events collected with the Belle detector at the KEKB asymmetric-energy e+ e- collider. We find no evidence for such a particle in the mass range from 212 MeV/c2 to 300 MeV/c2 for lifetimes below 10(-12) s, and set upper limits on its branching fractions. In particular, we search for a particle with a mass of 214.3 MeV/c2 reported by the HyperCP experiment, and obtain upper limits on the products B(B0→K*0 X)×B(X→μ+ μ- )<2.26(2.27)×10(-8) and B(B0→ρ0 X)×B(X→μ+ μ-)<1.73(1.73)×10(-8) at 90% C.L. for a scalar (vector) X particle.
Published: 2010
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199. Observation of B(s)(0) → D(s)(-) π+ and B(s)(0) → D(s)(-) ρ+ and measurement of the B(s)(0) → D(s)(*-) ρ+ longitudinal polarization fraction.

Author: Louvot R, Schneider O, Aushev T, Arinstein K, Bakich AM, Balagura V, Barberio E, Bay A, Belous K, Bischofberger M, Bondar A, Bozek A, Bracko M, Browder TE, Chang P, Chao Y, Chen A, Chen KF, Chen P, Cheon BG, Chiang CC, Cho IS, Choi Y, Danilov M, Dash M, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Haba J, Hara T, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Iwasaki M, Iwasaki Y, Joshi NJ, Kah DH, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kiesling C, Kim HJ, Kim HO, Kim JH, Kim MJ, Kim YJ, Kinoshita K, Ko BR, Kodys P, Korpar S, Krizan P, Krokovny P, Kumita T, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Matyja A, McOnie S, Miyabayashi K, Miyata H, Miyazaki Y, Mohanty GB, Nakao M, Nakazawa H, Nishida S, Nishimura K, Nitoh O, Ohshima T, Okuno S, Olsen SL, Pakhlov P, Pakhlova G, Palka H, Park H, Park HK, Pestotnik R, Petric M, Piilonen LE, Poluektov A, Prim M, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schwanda C, Schwartz AJ, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Smerkol P, Sokolov A, Stanic S, Staric M, Sumiyoshi T, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Wicht J, Won E, Yabsley BD, Yamashita Y, Zhang ZP, Zivko T, and Zyukova O
Subjects: Elementary Particles, Quantum Theory
Abstract: First observations of the B(s)(0) → D(s)(*-) π+, B(s)(0) → D(s)(-) ρ+ and B(s)(0) → D(s)(*-) ρ+ decays are reported together with measurements of their branching fractions: B(B(s)(0) → D(s)(*-) π+) = [2.4(-0.4)(+0.5)(stat) ± 0.3(syst) ± 0.4(f(s))]×10(-3), B(B(s)(0) → D(s)(-) ρ+) = [8.5(-1.2)(+1.3)(stat) ± 1.1(syst) ± 1.3(f(s))]×10(-3) and B(B(s)(0) → D(s)(*-) ρ+) = [11.9(-2.0)(+2.2)(stat) ± 1.7(syst) ± 1.8(f(s))]×10(-3) (f(s) = N(B(s)(*) B(s)(*))/N(bb)). From helicity-angle distributions, we measured the longitudinal polarization fraction in B(s)(0) → D(s)(*-) ρ+ decays to be f(L)(B(s)(0) → D(s)(*-) ρ+) = 1.05(-0.10)(+0.08)(stat)(-0.04)(+0.03)(syst). These results are based on a 23.6 fb(-1) data sample collected at the Υ(5S) resonance with the Belle detector at the KEKB e+ e- collider.
Published: 2010
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200. Search for CP violation in the decays D(s)+ --> KS0pi+ and D(s)+ --> KS0K+.

Author: Ko BR, Won E, Aihara H, Aulchenko V, Aushev T, Bakich AM, Balagura V, Barberio E, Belous K, Bhardwaj V, Bischofberger M, Bozek A, Bracko M, Browder TE, Chang P, Chen A, Chen P, Cheon BG, Cho IS, Choi Y, Dalseno J, Das A, Dolezal Z, Drutskoy A, Eidelman S, Goldenzweig P, Golob B, Ha H, Hara T, Hayashii H, Horii Y, Hoshi Y, Hou WS, Hsiung YB, Hyun HJ, Iijima T, Inami K, Itoh R, Iwabuchi M, Iwasaki M, Joshi NJ, Kah DH, Kang JH, Kapusta P, Katayama N, Kawasaki T, Kim HO, Kim YJ, Korpar S, Krizan P, Krokovny P, Kuhr T, Kumita T, Kwon YJ, Kyeong SH, Lange JS, Lee MJ, Lee SH, Li J, Liu C, Liu Y, Liventsev D, Louvot R, Matyja A, McOnie S, Miyata H, Mizuk R, Nakano E, Nakao M, Natkaniec Z, Neubauer S, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen SL, Ostrowicz W, Pakhlov P, Pakhlova G, Palka H, Park CW, Park H, Park HK, Pestotnik R, Petric M, Piilonen LE, Röhrken M, Ryu S, Sahoo H, Sakai Y, Schneider O, Schwanda C, Schwartz AJ, Seidl R, Senyo K, Sevior ME, Shapkin M, Shebalin V, Shen CP, Shiu JG, Singh JB, Smerkol P, Sokolov A, Solovieva E, Stanic S, Staric M, Sumiyoshi T, Tanaka M, Taylor GN, Teramoto Y, Trabelsi K, Uehara S, Unno Y, Uno S, Varner G, Varvell KE, Vervink K, Wang CH, Wang MZ, Wang P, Watanabe M, Watanabe Y, Yabsley BD, Yamashita Y, Yamauchi M, Zhang ZP, Zhilich V, Zivko T, Zupanc A, and Zyukova O
Abstract: We have searched for CP violation in the charmed meson decays D((s))(+) --> K(S)(0)pi(+) and D((s))(+) --> K(S)(0)K(+) using 673 fb(-1) of data collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. No evidence for CP violation is observed. We report the most sensitive CP asymmetry measurements to date for these decays: A(CP)(D(+)-->K(S)(0)pi(+)) = (-0.71 +/- 0.19 +/- 0.20)%, A(CP)(D(s)(+) --> K(S)(0)pi(+)) = (+5.45 +/- 2.50 +/- 0.33)%, A(CP)(D(+) --> K(S)(0)K(+)) = (-0.16 +/- 0.58 +/- 0.25)%, and A(CP)(D(s)(+) --> K(S)(0)K(+)) = (+0.12 +/- 0.36 +/- 0.22)%, where the first uncertainties are statistical and the second are systematic.
Published: 2010
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