Search for the process e + e - →D * (2007) with the CMD-3 detector

D.N. Shemyakin,R.R. Akhmetshin, A.N. Amirkhanov,Alexey Anisenkov,V.M. Aulchenko,V.Sh. Banzarov,N.S. Bashtovoy, D.E. Berkaev,A.E. Bondar, A.V. Bragin,S.I. Eidelman,D.A. Epifanov, L.B. Epshteyn,A.L. Erofeev,G.V. Fedotovich, S.E. Gayazov, A.A. Grebenuk,S.S. Gribanov,D.N. Grigoriev, F.V. Ignatov,V. L. Ivanov,S.V. Karpov, A.S. Kasaev,Vassili Kazanin, I. A. Koop,A.A. Korobov,A.N. Kozyrev,E.A. Kozyrev, P. Krokovny, A.E. Kuzmenko,A.S. Kuzmin,I.B. Logashenko,A. P. Lysenko,P.A. Lukin,K.Yu. Mikhailov, V.S. Okhapkin,A. V. Otboev,E.A. Perevedentsev,Yu.N. Pestov,A.S. Popov,G.P. Razuvaev,A.A. Ruban,N.M. Ryskulov, A.E. Ryzhenenkov, A. V. Semenov, A. I. Senchenko,Yu. M. Shatunov,V.E. Shebalin,B.A. Shwartz,D. B. Shwartz,A.L. Sibidanov,E. P. Solodov,V.M. Titov,Alexey Talyshev, S. S. Tolmachev, A.I. Vorobiov,Yu.V. Yudin

Epj Web of Conferences（2019）

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摘要

A search for the process e + e − → D *0 (2007) has been performed with the CMD-3 detector at the VEPP-2000 e + e − -collider. Two main decay modes of the D *0 (2007) decay, D 0 π0 and D 0 γ, followed by D 0 → K + π− π+ π− are used in this analysis. With an integrated luminosity of 3.7 pb−1 collected at the center-of-mass energy Ec.m. =2006.62 MeV our preliminary upper limit is BD*0 →e + e − at 90%C.L.

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