TY  - JOUR
AU  - BABAR Collaboration (Lees, J. P. et al
AU  - Lopez-March, N.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
PY  - 2012
DA  - 2012//
TI  - Search for the decay D-0 -> gamma gamma and measurement of the branching fraction for D-0 -> pi(0)pi(0)
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 091107
EP  - 8pp
VL  - 85
IS  - 9
PB  - Amer Physical Soc
AB  - We search for the rare decay of the D-0 meson to two photons, D-0 -> gamma gamma, and present a measurement of the branching fraction for a D-0 meson decaying to two neutral pions, B(D-0 -> pi(0)pi(0)). The data sample analyzed corresponds to an integrated luminosity of 470.5 fb(-1) collected by the BABAR detector at the PEP-II asymmetric-energy e(+)e(-) collider at SLAC. We place an upper limit on the branching fraction, B(D-0 -> gamma gamma) < 2.2 x 10(-6), at 90% confidence level. This limit improves on the existing limit by an order of magnitude. We also find B(D-0 -> pi(0)pi(0)) = (8.4 +/- 0.1 +/- 0.4 +/- 0.3 +/-) x 10(-4).
SN  - 1550-7998
UR  - http://arxiv.org/abs/arXiv:1110.6480
UR  - https://doi.org/10.1103/PhysRevD.85.091107
DO  - 10.1103/PhysRevD.85.091107
LA  - English
N1  - WOS:000304255300002
ID  - BABARCollaborationLees_etal2012
ER  -