Observation of D0 Meson Decays to \u3c0+ \u3c0 12 \u3bc+ \u3bc 12 and K+ K 12 \u3bc+ \u3bc 12 Final States


The first observation of the D0 \u2192 \u3c0+ \u3c0 12 \u3bc+ \u3bc 12 and D0 \u2192 K+ K 12 \u3bc+ \u3bc 12 decays is reported using a sample of proton-proton collisions collected by LHCb at a center-of-mass energy of 8 TeV, and corresponding to 2 fb^ 121 of integrated luminosity. The corresponding branching fractions are measured using as normalization the decay D0 \u2192 K 12 \u3c0+ [\u3bc+ \u3bc 12]_{\u3c10/\u3c9}, where the two muons are consistent with coming from the decay of a \u3c10 or \u3c9 meson. The results are B(D0 \u2192 \u3c0+ \u3c0 12 \u3bc+ \u3bc 12) = (9.64 \ub1 0.48 \ub1 0.51 \ub1 0.97) 7 10^ 127 and B(D0 \u2192 K+ K 12 \u3bc+ \u3bc 12) = (1.54 \ub1 0.27 \ub1 0.09 \ub1 0.16) 7 10^ 127, where the uncertainties are statistical, systematic, and due to the limited knowledge of the normalization branching fraction. The dependence of the branching fraction on the dimuon mass is also investigated

Similar works

Full text


Archivio istituzionale della ricerca - Alma Mater Studiorum Università di Bologna

Provided original full text link
oaioai:cris.unibo.it:11585/610013Last time updated on 9/4/2019

Having an issue?

Is data on this page outdated, violates copyrights or anything else? Report the problem now and we will take corresponding actions after reviewing your request.