Observation of D^{0}→ρ^{0}γ and Search for CP Violation in Radiative Charm Decays.

Published

Journal Article

We report the first observation of the radiative charm decay D^{0}→ρ^{0}γ and the first search for CP violation in decays D^{0}→ρ^{0}γ, ϕγ, and K[over ¯]^{*0}(892)γ, 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}→ρ^{0}γ)=(1.77±0.30±0.07)×10^{-5}, where the first uncertainty is statistical and the second is systematic. The obtained CP asymmetries A_{CP}(D^{0}→ρ^{0}γ)=+0.056±0.152±0.006, A_{CP}(D^{0}→ϕγ)=-0.094±0.066±0.001, and A_{CP}(D^{0}→K[over ¯]^{*0}γ)=-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}→ϕγ)=(2.76±0.19±0.10)×10^{-5} and B(D^{0}→K[over ¯]^{*0}γ)=(4.66±0.21±0.21)×10^{-4}.

Full Text

Duke Authors

Cited Authors

  • Nanut, T; Zupanc, A; Adachi, I; Aihara, H; Al Said, S; Asner, DM; Aulchenko, V; Aushev, T; Ayad, R; Babu, V; Badhrees, I; Bakich, AM; Bansal, V; Behera, P; Bhardwaj, V; Biswal, J; Bondar, A; Bozek, A; Bračko, M; Browder, TE; Červenkov, D; Chekelian, V; Chen, A; Cheon, BG; Chistov, R; Cho, K; Choi, S-K; Choi, Y; Cinabro, D; Dash, N; Di Carlo, S; Doležal, Z; Dutta, D; Eidelman, S; Farhat, H; Fast, JE; Ferber, T; Fulsom, BG; 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, WW; Jaegle, I; Joffe, D; Joo, KK; Julius, T; Kaliyar, AB; Kang, KH; Kawasaki, T; Kim, DY; Kim, JB; Kim, KT; Kim, MJ; Kim, SH; Kinoshita, K; Kodyš, P; Korpar, S; Krokovny, P; Kuhr, T; Kulasiri, R; Kuzmin, A; Kwon, Y-J; Lange, JS; Lee, IS; Li, CH; Li, L; Li, Y; Li Gioi, L; Libby, J; Liventsev, D; Lubej, M; Masuda, M; Matsuda, T; Matvienko, D; Miyabayashi, K; Miyata, H; Mizuk, R; Mohanty, GB; Moon, HK; Nakao, M; Nath, KJ; Nayak, M; Nisar, NK; Nishida, S; Ogawa, S; Okuno, S; Pakhlov, P; Pakhlova, G; Pal, B; Park, C-S; Park, CW; Park, H; Paul, S; Pedlar, TK; Pesántez, L; Pestotnik, R; Petrič, M; Piilonen, LE; Prasanth, K; Pulvermacher, C; Rauch, J; Ritter, M; Rostomyan, A; Sakai, Y; Sandilya, S; Santelj, L; Sanuki, T; Sato, Y; Savinov, V; Schlüter, T; Schneider, O; Schnell, G; Schwanda, C; Schwartz, AJ; Seino, Y; Senyo, K; Seon, O; Sevior, ME; Shebalin, V; Shen, CP; Shibata, T-A; Shiu, J-G; Shwartz, B; Solovieva, E; Stanič, S; Starič, M; Strube, JF; 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, CH; Wang, M-Z; Wang, P; Watanabe, Y; Widmann, E; Won, E; Yamaoka, J; Yamashita, Y; Yelton, J; Zhang, ZP; Zhilich, V; Zhukova, V; Zhulanov, V; Belle Collaboration,

Published Date

  • February 2017

Published In

Volume / Issue

  • 118 / 5

Start / End Page

  • 051801 -

PubMed ID

  • 28211706

Pubmed Central ID

  • 28211706

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.118.051801

Language

  • eng