Observation of D-0 -˃ rho(0)gamma and Search for CP Violation in Radiative Charm Decays
- Title
- Observation of D-0 -˃ rho(0)gamma and Search for CP Violation in Radiative Charm Decays
- Author
- 천병구
- Issue Date
- 2017-01
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW LETTERS, v. 118, no. 5, Article no. 051801
- Abstract
- We 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).
- URI
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.118.051801https://repository.hanyang.ac.kr/handle/20.500.11754/105139
- ISSN
- 0031-9007; 1079-7114
- DOI
- 10.1103/PhysRevLett.118.051801
- Appears in Collections:
- COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
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