- Main
First Observation of CP Violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data.
- Author(s): Abdesselam, A
- Adachi, I
- Adametz, A
- Adye, T
- Ahmed, H
- Aihara, H
- Akar, S
- Alam, MS
- Albert, J
- Al Said, S
- Andreassen, R
- Angelini, C
- Anulli, F
- Arinstein, K
- Arnaud, N
- Asner, DM
- Aston, D
- Aulchenko, V
- Aushev, T
- Ayad, R
- Babu, V
- Badhrees, I
- Bahinipati, S
- Bakich, AM
- Band, HR
- Banerjee, Sw
- Barberio, E
- Bard, DJ
- Barlow, RJ
- Batignani, G
- Beaulieu, A
- Bellis, M
- Ben-Haim, E
- Bernard, D
- Bernlochner, FU
- Bettarini, S
- Bettoni, D
- Bevan, AJ
- Bhardwaj, V
- Bhuyan, B
- Bianchi, F
- Biasini, M
- Biswal, J
- Blinov, VE
- Bloom, PC
- Bobrov, A
- Bomben, M
- Bondar, A
- Bonneaud, GR
- Bonvicini, G
- Bozek, A
- Bozzi, C
- Bračko, M
- Briand, H
- Browder, TE
- Brown, DN
- Brown, DN
- Bünger, C
- Burchat, PR
- Buzykaev, AR
- Calabrese, R
- Calcaterra, A
- Calderini, G
- Carpinelli, M
- Cartaro, C
- Casarosa, G
- Cenci, R
- Červenkov, D
- Chang, P
- Chao, DS
- Chauveau, J
- Cheaib, R
- Chekelian, V
- Chen, A
- Chen, C
- Cheng, CH
- Cheon, BG
- Chilikin, K
- Chistov, R
- Cho, K
- Chobanova, V
- Choi, HHF
- Choi, S-K
- Chrzaszcz, M
- Cibinetto, G
- Cinabro, D
- Cochran, J
- Coleman, JP
- Contri, R
- Convery, MR
- Cowan, G
- Cowan, R
- Cremaldi, L
- Dalseno, J
- Dasu, S
- Davier, M
- Davis, CL
- De Mori, F
- De Nardo, G
- Denig, AG
- Derkach, D
- de Sangro, R
- Dey, B
- Di Lodovico, F
- Dingfelder, J
- Dittrich, S
- Doležal, Z
- Dorfan, J
- Drásal, Z
- Drutskoy, A
- Druzhinin, VP
- Dubois-Felsmann, GP
- Dunwoodie, W
- Dutta, D
- Ebert, M
- Echenard, B
- Eidelman, S
- Eigen, G
- Eisner, AM
- Emery, S
- Ernst, JA
- Faccini, R
- Farhat, H
- Fast, JE
- Feindt, M
- Ferber, T
- Ferrarotto, F
- Ferroni, F
- Field, RC
- Filippi, A
- Finocchiaro, G
- Fioravanti, E
- Flood, KT
- Ford, WT
- Forti, F
- Franco Sevilla, M
- Fritsch, M
- Fry, JR
- Fulsom, BG
- Gabathuler, E
- Gabyshev, N
- Gamba, D
- Garmash, A
- Gary, JW
- Garzia, I
- Gaspero, M
- Gaur, V
- Gaz, A
- Gershon, TJ
- Getzkow, D
- Gillard, R
- Li Gioi, L
- Giorgi, MA
- Glattauer, R
- Godang, R
- Goh, YM
- Goldenzweig, P
- Golob, B
- Golubev, VB
- Gorodeisky, R
- Gradl, W
- Graham, MT
- Grauges, E
- Griessinger, K
- Gritsan, AV
- Grosdidier, G
- Grünberg, O
- Guttman, N
- Haba, J
- Hafner, A
- Hamilton, B
- Hara, T
- Harrison, PF
- Hast, C
- Hayasaka, K
- Hayashii, H
- Hearty, C
- He, XH
- Hess, M
- Hitlin, DG
- Hong, TM
- Honscheid, K
- Hou, W-S
- Hsiung, YB
- Huard, Z
- Hutchcroft, DE
- Iijima, T
- Inguglia, G
- Innes, WR
- Ishikawa, A
- Itoh, R
- Iwasaki, Y
- Izen, JM
- Jaegle, I
- Jawahery, A
- Jessop, CP
- Joffe, D
- Joo, KK
- Julius, T
- Kang, KH
- Kass, R
- Kawasaki, T
- Kerth, LT
- Khan, A
- Kiesling, C
- Kim, DY
- Kim, JB
- Kim, JH
- Kim, KT
- Kim, P
- Kim, SH
- Kim, YJ
- King, GJ
- Kinoshita, K
- Ko, BR
- Koch, H
- Kodyš, P
- Kolomensky, Yu G
- Korpar, S
- Kovalskyi, D
- Kowalewski, R
- Kravchenko, EA
- Križan, P
- Krokovny, P
- Kuhr, T
- Kumar, R
- Kuzmin, A
- Kwon, Y-J
- Lacker, HM
- Lafferty, GD
- Lanceri, L
- Lange, DJ
- Lankford, AJ
- Latham, TE
- Leddig, T
- Le Diberder, F
- Lee, DH
- Lee, IS
- Lee, MJ
- Lees, JP
- Leith, DWGS
- Leruste, Ph
- Lewczuk, MJ
- Lewis, P
- Libby, J
- Lockman, WS
- Long, O
- Lopes Pegna, D
- LoSecco, JM
- Lou, XC
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- Luppi, E
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- Lutz, AM
- Lynch, G
- MacFarlane, DB
- Malaescu, B
- Mallik, U
- Manoni, E
- Marchiori, G
- Margoni, M
- Martellotti, S
- Martinez-Vidal, F
- Masuda, M
- Mattison, TS
- Matvienko, D
- McKenna, JA
- Meadows, BT
- Miyabayashi, K
- Miyashita, TS
- Miyata, H
- Mizuk, R
- Mohanty, GB
- Moll, A
- Monge, MR
- Moon, HK
- Morandin, M
- Muller, DR
- Mussa, R
- Nakano, E
- Nakazawa, H
- Nakao, M
- Nanut, T
- Nayak, M
- Neal, H
- Neri, N
- Nisar, NK
- Nishida, S
- Nugent, IM
- Oberhof, B
- Ocariz, J
- Ogawa, S
- Okuno, S
- Olaiya, EO
- Olsen, J
- Ongmongkolkul, P
- Onorato, G
- Onuchin, AP
- Onuki, Y
- Ostrowicz, W
- Oyanguren, A
- Pakhlova, G
- Pakhlov, P
- Palano, A
- Pal, B
- Palombo, F
- Pan, Y
- Panduro Vazquez, W
- Paoloni, E
- Park, CW
- Park, H
- Passaggio, S
- Patel, PM
- Patrignani, C
- Patteri, P
- Payne, DJ
- Pedlar, TK
- Peimer, DR
- Peruzzi, IM
- Pesántez, L
- Pestotnik, R
- Petrič, M
- Piccolo, M
- Piemontese, L
- Piilonen, LE
- Pilloni, A
- Piredda, G
- Playfer, S
- Poireau, V
- Porter, FC
- Posocco, M
- Prasad, V
- Prell, S
- Prepost, R
- Puccio, EMT
- Pulliam, T
- Purohit, MV
- Pushpawela, BG
- Rama, M
- Randle-Conde, A
- Ratcliff, BN
- Raven, G
- Ribežl, E
- Richman, JD
- Ritchie, JL
- Rizzo, G
- Roberts, DA
- Robertson, SH
- Röhrken, M
- Roney, JM
- Roodman, A
- Rossi, A
- Rostomyan, A
- Rotondo, M
- Roudeau, P
- Sacco, R
- Sakai, Y
- Sandilya, S
- Santelj, L
- Santoro, V
- Sanuki, T
- Sato, Y
- Savinov, V
- Schindler, RH
- Schneider, O
- Schnell, G
- Schroeder, T
- Schubert, KR
- Schumm, BA
- Schwanda, C
- Schwartz, AJ
- Schwitters, RF
- Sciacca, C
- Seiden, A
- Sekula, SJ
- Senyo, K
- Seon, O
- Serednyakov, SI
- Sevior, ME
- Shapkin, M
- Shebalin, V
- Shen, CP
- Shibata, T-A
- Shiu, J-G
- Simard, M
- Simi, G
- Simon, F
- Simonetto, F
- Skovpen, Yu I
- Smith, AJS
- Smith, JG
- Snyder, A
- So, RY
- Sobie, RJ
- Soffer, A
- Sohn, Y-S
- Sokoloff, MD
- Sokolov, A
- Solodov, EP
- Solovieva, E
- Spaan, B
- Spanier, SM
- Starič, M
- Stocchi, A
- Stroili, R
- Stugu, B
- Su, D
- Sullivan, MK
- Sumihama, M
- Sumisawa, K
- Sumiyoshi, T
- Summers, DJ
- Sun, L
- Tamponi, U
- Taras, P
- Tasneem, N
- Teramoto, Y
- Tisserand, V
- Todyshev, K Yu
- Toki, WH
- Touramanis, C
- Trabelsi, K
- Tsuboyama, T
- Uchida, M
- Uglov, T
- Unno, Y
- Uno, S
- Usov, Y
- Uwer, U
- Vahsen, SE
- Van Hulse, C
- Vanhoefer, P
- Varner, G
- Vasseur, G
- Va'vra, J
- Verderi, M
- Vinokurova, A
- Vitale, L
- Vorobyev, V
- Voß, C
- Wagner, MN
- Wagner, SR
- Waldi, R
- Walsh, JJ
- Wang, CH
- Wang, M-Z
- Wang, P
- Watanabe, Y
- West, CA
- Williams, KM
- Wilson, FF
- Wilson, JR
- Wisniewski, WJ
- Won, E
- Wormser, G
- Wright, DM
- Wu, SL
- Wulsin, HW
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- Yamaoka, J
- Yashchenko, S
- Yuan, CZ
- Yusa, Y
- Zallo, A
- Zhang, CC
- Zhang, ZP
- Zhilich, V
- Zhulanov, V
- Zupanc, A
- BaBar Collaboration
- Belle Collaboration
- et al.
Abstract
We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6} BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6} BB[over ¯] pairs recorded by the Belle detector. We measure the CP asymmetry parameters -η_{f}S=+0.66±0.10(stat)±0.06(syst) and C=-0.02±0.07(stat)±0.03(syst). These results correspond to the first observation of CP violation in B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.
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