Belle CollaborationNanut, T.Zupanc, A.Adachi, I.Aihara, H.Al Said, S.Asner, D. M.Aulchenko, V.Aushev, T.Ayad, R.Babu, V.Badhrees, I.Bakich, A. M.Bansal, V.Behera, P.Bhardwaj, V.Biswal, J.Bondar, A.Bozek, A.Bracko, M.Browder, T. E.Cervenkov, D.Chekelian, V.Chen, A.Cheon, B. G.Chistov, R.Cho, K.Choi, S. -K.Choi, Y.Cinabro, D.Dash, N.Di Carlo, S.Dolezal, Z.Dutta, D.Eidelman, S.Farhat, H.Fast, J. E.Ferber, T.Fulsom, B. G.Gaur, V.Gabyshev, N.Garmash, A.Gillard, R.Goldenzweig, P.Golob, B.Hayasaka, K.Hayashii, H.Hou, W. -S.Iijima, T.Inami, K.Inguglia, G.Ishikawa, A.Iwasaki, Y.Jacobs, W. W.Jaegle, I.Joffe, D.Joo, K. K.Julius, T.Kaliyar, A. B.Kang, K. H.Kawasaki, T.Kim, D. Y.Kim, J. B.Kim, K. T.Kim, M. J.Kim, S. H.Kinoshita, K.Kodys, P.Korpar, S.Krokovny, P.Kuhr, T.Kulasiri, R.Kuzmin, A.Kwon, Y. -J.Lange, J. S.Lee, I. S.Li, C. H.Li, L.Li, Y.Gioi, L. LiLibby, J.Liventsev, D.Lubej, M.Masuda, M.Matsuda, T.Matvienko, D.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Moon, H. K.Nakao, M.Nath, K. J.Nayak, M.Nisar, N. K.Nishida, S.Ogawa, S.Okuno, S.Pakhlov, P.Pakhlova, G.Pal, B.Park, C. -S.Park, C. W.Park, H.Paul, S.Pedlar, T. K.Pesantez, L.Pestotnik, R.Petric, M.Piilonen, L. E.Prasanth, K.Pulvermacher, C.Rauch, J.Ritter, M.Rostomyan, A.Sakai, Y.Sandilya, S.Santelj, L.Sanuki, T.Sato, Y.Savinov, V.Schulter, T.Schneider, O.Schnell, G.Schwanda, C.Schwartz, A. J.Seino, Y.Senyo, K.Seon, O.Sevior, M. E.Shebalin, V.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Solovieva, E.Stanic, S.Staric, M.Strube, J. F.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, C. H.Wang, M. -Z.Wang, P.Watanabe, Y.Widmann, E.Won, E.Yamaoka, J.Yamashita, Y.Yelton, J.Zhang, Z. P.Zhilich, V.Zhukova, V.Zhulanov, V.2017-03-272017-03-272017-03-27201710.1103/PhysRevLett.118.051801https://infoscience.epfl.ch/handle/20.500.14299/135936WOS:000396414200003We report the first observation of the radiative charm decay D-0 -> rho(0)gamma and the first search for CP violation in decays D-0 -> rho(0)gamma, phi gamma, and (K) over bar (*0)(892)gamma, 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 -> rho(0)gamma) = (1.77 +/- 0.30 +/- 0.07) x 10(-5), where the first uncertainty is statistical and the second is systematic. The obtained CP asymmetries A(CP)(D-0 ->rho(0)gamma) = +0.056 +/- 0.152 +/- 0.006, A(CP)(D-0 -> phi gamma) = -0.094 +/- 0.066 +/- 0.001, and A(CP)(D-0 -> (K) over bar (*0) gamma = -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 -> phi gamma) = (2.76 +/- 0.19 +/- 0.10) x 10(-5) and B(D-0 -> (K) over bar (*0) gamma = (4.66 +/- 0.21 +/- 0.21) x 10(-4).text::journal::journal article::research article