Study of B̄0→D0π+π- decays

We report the results of a study of neutral B meson decays to the D0π+π- final state, where the D0 is fully reconstructed. The results are obtained from an event sample containing 388×106 BB-meson pairs collected in the Belle experiment at the KEKB e+e- collider. The total branching fraction of the three-body decay B(B0→D0π+π-)=(8.4±0. 4(stat)±0.8(syst))×10-4 has been measured. The intermediate resonant structure of these three-body decays has been studied. From a Dalitz plot analysis we have obtained the product of the branching fractions for D2*+ and D0*+ production: B(B0→D2*+π-) ×B(D2*+→D0π+)=(2.15±0.17(stat)±0.29(syst) ±0.12(mod))×10-4, and B(B0→D0*+π-) ×B(D0*+→D0π+)=(0.60±0.13(stat)±0.15(syst) ±0.22(mod))×10-4. This is the first observation of the B0→D0*+π- decay. The B0→D0ρ0 and D0f2 branching fractions are measured to be: B(B0→D0ρ0)=(3. 19±0.20(stat)±0.24(syst)±0.38(mod))×10-4, and B(B0→D0f2)=(1.20±0.18(stat)±0.21(syst)±0.32(mod) )×10-4. © 2007 The American Physical Society.

K. F. Chen | I. Bizjak | S. Hou | H. Miyake | T. Schietinger | F. Mandl | H. Aihara | S. Bahinipati | E. Barberio | M. Barbero | Y. Nagasaka | T. Ohshima | G. Taylor | Y. Unno | P. Urquijo | K. Varvell | B. Yabsley | M. Nakao | N. Tamura | Sangyoub Lee | T. Aushev | Y. Iwasaki | K. Abe | I. Adachi | A. Bakich | A. Bay | I. Bedny | U. Bitenc | S. Blyth | A. Bondar | A. Bozek | M. Bracko | Y. Chao | A. Chen | B. Cheon | R. Chistov | Y. Choi | M. Dash | A. Drutskoy | N. Gabyshev | A. Garmash | T. Gershon | G. Gokhroo | B. Golob | K. Hayasaka | M. Hazumi | T. Hokuue | Y. Hoshi | W. Hou | T. Iijima | A. Imoto | K. Inami | A. Ishikawa | H. Ishino | R. Itoh | M. Iwasaki | J. Kang | T. Kawasaki | H. Kim | K. Kinoshita | P. Križan | P. Krokovny | C. Kuo | A. Kuzmin | Y. Kwon | T. Lesiak | T. Matsumoto | W. Mitaroff | K. Miyabayashi | H. Miyata | R. Mizuk | E. Nakano | Z. Natkaniec | S. Nishida | O. Nitoh | S. Okuno | S. Olsen | P. Pakhlov | H. Park | L. Peak | L. Piilonen | Y. Sakai | O. Schneider | J. Schümann | A. Schwartz | K. Senyo | H. Shibuya | A. Somov | M. Staric | K. Sumisawa | T. Sumiyoshi | F. Takasaki | M. Tanaka | Y. Teramoto | K. Trabelsi | T. Tsukamoto | T. Uglov | K. Ueno | S. Uno | G. Varner | S. Villa | A. Yamaguchi | Y. Yamashita | L. Zhang | V. Zhilich | X. Tian | K. Arinstein | V. Aulchenko | T. Browder | J. Dalseno | J. Haba | H. Hayashii | K. Ikado | P. Kapusta | H. Kawai | H. Kichimi | R. Kulasiri | Y. Miyazaki | G. Moloney | Y. Onuki | R. Pestotnik | N. Satoyama | C. Schwanda | B. Shwartz | V. Sidorov | S. Stanič | S. Suzuki | K. Tamai | Q. Xie | M. Yamauchi | Y. Hsiung | Y. Kim | E. Won | T. Tsuboyama | Gobinda Majumder | S. Noguchi | Y. Watanabe | H. Stoeck | D. Anipko | K. Belous | S. McOnie | G. Pakhlova | M. Shapkin | Y. Usov | A. Zupanc | A. Go | H. Ha | D. Heffernan | D. Epifanov | R. Kumar | A. Sokolov | S. Uehara | Young-Il Choi | V. Balagura | S. W. Lin | A. Poluektov | H. Sahoo | M. C. Chang | Chunjie Wang | Youngil Choi | Wen Chen | S. Eidelman | M.-Z. Wang | Chih-pan Wu | Z. P. Zhang | L. Zhang | T. Lesiak | S. Suzuki | M. Starič | M. Bračko

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