Observation of the radiative decay D0-->phigamma

O Tajima; K Abe; K Abe; H Aihara; M Akatsu; V Aulchenko; T Aushev; A M Bakich; A Bay; I Bizjak; A Bondar; A Bozek; M Bracko; T E Browder; Y Chao; B G Cheon; R Chistov; Y Choi; Y K Choi; A Chuvikov; M Danilov; L Y Dong; S Eidelman; V Eiges; F Fang; N Gabyshev; A Garmash; T Gershon; G Gokhroo; J Haba; C Hagner; F Handa; K Hasuko; M Hazumi; I Higuchi; T Hokuue; Y Hoshi; W-S Hou; H-C Huang; T Iijima; K Inami; A Ishikawa; R Itoh; Y Iwasaki; J H Kang; J S Kang; P Kapusta; N Katayama; H Kawai; H Kichimi; H J Kim; Hyunwoo Kim; J H Kim; S K Kim; K Kinoshita; P Koppenburg; S Korpar; P Krizan; P Krokovny; A Kuzmin; Y-J Kwon; J S Lange; G Leder; S H Lee; T Lesiak; J Li; A Limosani; S-W Lin; J MacNaughton; G Majumder; F Mandl; H Matsumoto; T Matsumoto; A Matyja; Y Mikami; W Mitaroff; K Miyabayashi; H Miyata; D Mohapatra; G R Moloney; T Nagamine; Y Nagasaka; E Nakano; H Nakazawa; Z Natkaniec; S Nishida; O Nitoh; T Nozaki; S Ogawa; T Ohshima; S Okuno; S L Olsen; H Ozaki; C W Park; K S Park; N Parslow; L E Piilonen; H Sagawa; M Saigo; Y Sakai; O Schneider; J Schümann; A J Schwartz; S Semenov; K Senyo; H Shibuya; B Shwartz; V Sidorov; J B Singh; N Soni; S Stanic; M Staric; K Sumisawa; T Sumiyoshi; S Suzuki; S Y Suzuki; F Takasaki; K Tamai; N Tamura; Y Teramoto; T Tomura; K Trabelsi; T Tsuboyama; T Tsukamoto; S Uehara; K Ueno; S Uno; G Varner; C C Wang; J G Wang; Y Watanabe; B D Yabsley; Y Yamada; A Yamaguchi; H Yamamoto; Y Yamashita; M Yamauchi; Y Yusa; Z P Zhang; V Zhilich; D Zontar

doi:10.1103/PhysRevLett.92.101803

Observation of the radiative decay D0-->phigamma

Phys Rev Lett. 2004 Mar 12;92(10):101803. doi: 10.1103/PhysRevLett.92.101803. Epub 2004 Mar 11.

Authors

O Tajima¹, K Abe, K Abe, H Aihara, M Akatsu, V Aulchenko, T Aushev, A M Bakich, A Bay, I Bizjak, A Bondar, A Bozek, M Bracko, T E Browder, Y Chao, B G Cheon, R Chistov, Y Choi, Y K Choi, A Chuvikov, M Danilov, L Y Dong, S Eidelman, V Eiges, F Fang, N Gabyshev, A Garmash, T Gershon, G Gokhroo, J Haba, C Hagner, F Handa, K Hasuko, M Hazumi, I Higuchi, T Hokuue, Y Hoshi, W-S Hou, H-C Huang, T Iijima, K Inami, A Ishikawa, R Itoh, Y Iwasaki, J H Kang, J S Kang, P Kapusta, N Katayama, H Kawai, H Kichimi, H J Kim, Hyunwoo Kim, J H Kim, S K Kim, K Kinoshita, P Koppenburg, S Korpar, P Krizan, P Krokovny, A Kuzmin, Y-J Kwon, J S Lange, G Leder, S H Lee, T Lesiak, J Li, A Limosani, S-W Lin, J MacNaughton, G Majumder, F Mandl, H Matsumoto, T Matsumoto, A Matyja, Y Mikami, W Mitaroff, K Miyabayashi, H Miyata, D Mohapatra, G R Moloney, T Nagamine, Y Nagasaka, E Nakano, H Nakazawa, Z Natkaniec, S Nishida, O Nitoh, T Nozaki, S Ogawa, T Ohshima, S Okuno, S L Olsen, H Ozaki, C W Park, K S Park, N Parslow, L E Piilonen, H Sagawa, M Saigo, Y Sakai, O Schneider, J Schümann, A J Schwartz, S Semenov, K Senyo, H Shibuya, B Shwartz, V Sidorov, J B Singh, N Soni, S Stanic, M Staric, K Sumisawa, T Sumiyoshi, S Suzuki, S Y Suzuki, F Takasaki, K Tamai, N Tamura, Y Teramoto, T Tomura, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, S Uno, G Varner, C C Wang, J G Wang, Y Watanabe, B D Yabsley, Y Yamada, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, Y Yusa, Z P Zhang, V Zhilich, D Zontar

Affiliation

¹ Tohoku University, Sendai.

PMID: 15089196
DOI: 10.1103/PhysRevLett.92.101803

Abstract

We report the observation of the decay D0-->phigamma with a statistical significance of 5.4sigma in 78.1 fb(-1) of data collected by the Belle experiment at the KEKB e+e- collider. This is the first observation of a flavor-changing radiative decay of a charmed meson. The Cabibbo- and color-suppressed decays D0-->phipi(0), phieta are also observed for the first time. We measure branching fractions B(D0-->phigamma)=[2.60(+0.70)(-0.61)(stat)+0.15-0.17(syst)] x 10(-5), B(D0-->phipi(0))=[8.01+/-0.26(stat)+/-0.47(syst)] x 10(-4), and B(D0-->phieta)=[1.48+/-0.47(stat)+/-0.09(syst)] x 10(-4).