%V 97 %D 2006 %O © 2006 The American Physical Society %K BELLE %X We report the first observation of a near-threshold enhancement in the (DD0)-D-0 pi(0) system from B ->(DD0)-D-0 pi K-0 decays using a 414 fb(-1) data sample collected at the Upsilon(4S) resonance. The enhancement peaks at a mass M=3875.2 +/- 0.7(-1.6)(+0.3)+/- 0.8 MeV/c(2) and the branching fraction for events in the peak is B(B ->(DD0)-D-0 pi K-0)=(1.22 +/- 0.31(+0.23)(-0.30)) x 10(-4). The data were collected with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. %A G Gokhroo %A G Majumder %A K Abe %A K Abe %A I Adachi %A H Aihara %A D Anipko %A T Aushev %A T Aziz %A AM Bakich %A V Balagura %A S Banerjee %A K Belous %A U Bitenc %A I Bizjak %A S Blyth %A A Bozek %A M Bracko %A J Brodzicka %A TE Browder %A P Chang %A Y Chao %A A Chen %A KF Chen %A WT Chen %A R Chistov %A SK Choi %A Y Choi %A YK Choi %A A Chuvikov %A S Cole %A J Dalseno %A M Danilov %A M Dash %A S Eidelman %A S Fratina %A T Gershon %A A Go %A B Golob %A A Gorisek %A H Ha %A J Haba %A K Hayasaka %A M Hazumi %A D Heffernan %A T Hokuue %A Y Hoshi %A S Hou %A WS Hou %A YB Hsiung %A T Iijima %A A Ishikawa %A R Itoh %A M Iwasaki %A Y Iwasaki %A JH Kang %A H Kawai %A T Kawasaki %A H Kichimi %A HO Kim %A YJ Kim %A S Korpar %A P Krizan %A P Krokovny %A R Kulasiri %A R Kumar %A CC Kuo %A YJ Kwon %A JS Lange %A G Leder %A T Lesiak %A SW Lin %A D Liventsev %A F Mandl %A T Matsumoto %A S McOnie %A W Mitaroff %A H Miyata %A Y Miyazaki %A R Mizuk %A GR Moloney %A T Nagamine %A Y Nagasaka %A M Nakao %A S Nishida %A O Nitoh %A S Noguchi %A S Ogawa %A T Ohshima %A T Okabe %A S Okuno %A SL Olsen %A W Ostrowicz %A H Ozaki %A P Pakhlov %A H Palka %A R Pestotnik %A LE Piilonen %A Y Sakai %A TR Sarangi %A T Schietinger %A O Schneider %A R Seidl %A K Senyo %A M Shapkin %A H Shibuya %A V Sidorov %A JB Singh %A A Sokolov %A A Somov %A N Soni %A S Stanic %A M Staric %A H Stoeck %A A Sugiyama %A T Sumiyoshi %A F Takasaki %A M Tanaka %A Y Teramoto %A XC Tian %A T Tsukamoto %A S Uehara %A T Uglov %A K Ueno %A Y Usov %A G Varner %A S Villa %A CH Wang %A MZ Wang %A Y Watanabe %A E Won %A CH Wu %A A Yamaguchi %A Y Yamashita %A M Yamauchi %A CC Zhang %A ZP Zhang %A V Zhilich %A Belle Collaboration %T Observation of a near-threshold D-0(D)over-bar(0)pi(0) enhancement in B -> D-0(D)over-bar(0)pi K-0 decay %J PHYS REV LETT %N 16 %I AMERICAN PHYSICAL SOC %L discovery1308521