TY  - JOUR
AU  - BABAR Collaboration (Aubert, B. et al
AU  - Azzolini, V.
AU  - Lopez-March, N.
AU  - Martinez-Vidal, F.
AU  - Milanes, D. A.
AU  - Oyanguren, A.
PY  - 2010
DA  - 2010//
TI  - Observation of inclusive D*(+/-) production in the decay of Y(1S)
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 011102
EP  - 8pp
VL  - 81
IS  - 1
PB  - Amer Physical Soc
AB  - We present a study of the inclusive D*(+/-) production in the decay of Y(1S) using (98.6 +/- 0.9) X 10(6) Y(2S) mesons collected with the BABAR detector at the Y(2S) resonance. Using the decay chain Y(2S) -> pi(+)pi Y-(1S), Y(1S) -> D*X-+/-, where X is unobserved, we measure the branching fraction B[Y(1S) -> D*X-+/-] = (2.52 +/- 0.13(stat) +/- 0.15(syst)% and the D*(+/-) momentum distribution in the rest frame of the Y(1S). We find evidence for an excess of D*+/- production over the expected rate from the virtual photon annihilation process Y(1S) -> gamma* -> c (c) over bar -> D*X-+/-.
SN  - 1550-7998
UR  - http://arxiv.org/abs/0911.2024
UR  - https://doi.org/10.1103/PhysRevD.81.011102
DO  - 10.1103/PhysRevD.81.011102
LA  - English
N1  - ISI:000274002800002
ID  - BABARCollaborationAubert_etal2010
ER  -