Measurement of the branching fractions of the radiative charm decays D{sup 0}{yields}K*{sup 0}{gamma} and D{sup 0}{yields}{phi}{gamma}

Journal Article · Wed Oct 01 00:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.071101· OSTI ID:21254235

Aubert, B; Bona, M; Karyotakis, Y; Lees, J P; Poireau, V; Prencipe, E; Prudent, X; Tisserand, V ^[1]; Tico, J Garra; Grauges, E ^[2]; Lopez, L; Palano, A; Pappagallo, M ^[3]; Eigen, G; Stugu, B; Sun, L ^[4]; Abrams, G S; Battaglia, M; Brown, D N; Cahn, R N ^[5]

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1. Laboratoire de Physique des Particules, IN2P3/CNRS et Universite de Savoie, F-74941 Annecy-Le-Vieux (France)
2. Universitat de Barcelona, Facultat de Fisica, Departament ECM, E-08028 Barcelona (Spain)
3. INFN Sezione di Bari, I-70126 Bari (Italy)
4. University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
5. Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)

We present a measurement of the branching fractions for the Cabibbo-favored radiative decay D{sup 0}{yields}K*{sup 0}{gamma} and the Cabibbo-suppressed radiative decay D{sup 0}{yields}{phi}{gamma}. These measurements are based on a data sample corresponding to an integrated luminosity of 387.1 fb{sup -1} and recorded with the BABAR detector at the PEP-II e{sup +}e{sup -} asymmetric-energy collider operating at center-of-mass energies 10.58 and 10.54 GeV. We measure the branching fractions relative to the well-studied decay D{sup 0}{yields}K{sup -}{pi}{sup +} and find B(D{sup 0}{yields}K*{sup 0}{gamma})/B(D{sup 0}{yields}K{sup -}{pi}{sup +})=(8.43{+-}0.51{+-}0.70)x10{sup -3} and B(D{sup 0}{yields}{phi}{gamma})/B(D{sup 0}{yields}K{sup -}{pi}{sup +})=(7.15{+-}0.78{+-}0.69)x10{sup -4}, where the first error is statistical and the second is systematic. This is the first observation of the decay mode D{sup 0}{yields}K*{sup 0}{gamma}.

• OSTI ID: 21254235
• Journal Information: Physical Review. D, Particles Fields, Vol. 78, Issue 7; Other Information: DOI: 10.1103/PhysRevD.78.071101; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
BRANCHING RATIO
CENTER-OF-MASS SYSTEM
D NEUTRAL MESONS
ELECTRON-POSITRON COLLISIONS
ELECTRONS
GAMMA RADIATION
GEV RANGE 01-10
KAONS NEUTRAL
LUMINOSITY
MESONS
PEP STORAGE RINGS
PIONS PLUS
POSITRONS
RADIATIVE DECAY