Search for the flavor-changing neutral current decay D/sup 0/ to mu /sup +/ mu /sup n/ pp collisions at square root s =1.96 TeV

D. Acosta,T. Affolder,M. H. Ahn,T. Akimoto,M.G. Albrow,D. J. Ambrose,D. Amidei,A. Anastassov,K. Anikeev,A. Annovi,J. Antos,M. Aoki,G. Apollinari,J. F. Arguin,T. Arisawa,A. Artikov,T. Asakawa,W. Ashmanskas,A. Attal,F. Azfar,P. Azzi-Bacchetta,N. Bacchetta,H. Bachacou,W. Badgett,S. Bailey,A. Barbaro Galtieri,G. J. Barker,V. E. Barnes,B. A. Barnett,S. Baroiant,M. Barone,G. Bauer,F. Bedeschi,S. Behari,S. Belforte,W. H. Bell,G. Bellettini,J. Bellinger,D. Benjamin,A. Beretvas,A. Bhatti,M. Binkley,D. Bisello,M. Bishai,R. E. Blair,C. Blocker,K. Bloom,B. Blumenfeld,A. Bocci,A. Bodek,G. Bolla,A. Bolshov,P.S.L. Booth,D. Bortoletto,J. Boudreau,S. Bourov,C. Bromberg,M. Brozovic,E. Brubaker,J. Budagov,H. S. Budd,K. Burkett,G. Busetto,P. Bussey,K. L. Byrum,S. Cabrera,P. Calafiura,M. Campanelli,M. Campbell,A. Canepa,D. Carlsmith,S. Carron,R. Carosi,M. Casarsa,W. Caskey,A. Castro,P. Catastini,D. Cauz,A. Cerri,C. Cerri,L. Cerrito,J. Chapman,C. Chen,Y.C Chen,M. Chertok,G. Chiarelli,G. Chlachidze,F. Chlebana,K. Cho,D. Chokheli,M. L. Chu,J. Y. Chung,W. H. Chung,Y. S. Chung,C. I. Ciobanu,Ciocci,A. G. Clark,M. Coca,A. Connolly,M. E. Convery,J. Conway,M. Cordelli,G. Cortiana,J. Cranshaw,R. Culbertson,C. Currat,D. Cyr,D. Dagenhart,S. DaRonco,S. D’Auria,P. de Barbaro,S. De Cecco,S. DellAgnello,M. DellOrso,S. Demers,L. Demortier,M. Deninno,D. De Pedis,P. F. Derwent,C. Dionisi,J. R. Dittmann,P. Doksus,A. Dominguez,S. Donati,M. DOnofrio,T. Dorigo,V. Drollinger,K. Ebina,N. Eddy,R. Ely,R. Erbacher,M. Erdmann,D. Errede,S. Errede,R. Eusebi,H. C. Fang,S. Farrington,I. Fedorko,R. G. Feild,M. Feindt,J. P. Fernandez,C. Ferretti,R. D. Field,I. Fiori,G. Flanagan,B. Flaugher,L. R. Flores-Castillo,A. D. Foland,S. Forrester,G. W. Foster,M. Franklin,H. Frisch,Y. Fujii,I. K. Furic,A. Gallas,M. Gallinaro,J. Galyardt,M. Garcia-Sciveres,A. F. Garfinkel,H. Gerberich,E. Gerchtein,D. W. Gerdes,S. Giagu,P. Giannetti,A. Gibson,K. Gibson,C. M. Ginsburg,K. Giolo,M. Giordani,G. Giurgiu,V. Glagolev,D. Glenzinski,M. Gold,N. Goldschmidt,D. Goldstein,J. Goldstein,G. Gómez,G. Gomez Ceballos,M. Goncharov,I. Gorelov,A. T. Goshaw,Y. Gotra,K. Goulianos,A. Gresele,G. Grim,C. Grosso-Pilcher,M. Guenther,Jg da Costa,C. Haber,K. A. Hahn,S. R. Hahn,E. Halkiadakis,C. Hall,R. Handler,F. Happacher,K. Hara,M. Hare,R. Harr,R. M. Harris,F. Hartmann,K. Hatakeyama,J. Hauser,C. Hays,E. Heider,B. Heinemann,J. Heinrich,M. Hennecke,M. Herndon,C. Hill,D. Hirschbuehl,A. Hocker,K. D. Hoffman,A. Holloway,S. Hou,Houlden,B. T. Huffman,R. Hughes,J. Huston,K. Ikado,J. Incandela,G. Introzzi,M. Iori,Y. Ishizawa,C. Issever,A. Ivanov,Y. Iwata,B. Iyutin,E. James,D. Jang,J. Jarrell,D. Jeans,H. Jensen,M. Jones,S. Y. Jun,T. R. Junk,T. Kamon,J. Kang,Mk Unel,P. E. Karchin,S. Kartal,Y. Kato,Y. Kemp,R. Kephart,U. Kerzel,D. Khazins,V. Khotilovich,B. Kilminster,B. J. Kim,D. H. Kim,H. S. Kim,J. E. Kim,M. J. Kim,Kim,S.-B. Kim

Search for the flavor-changing neutral current decay D/sup 0/ to mu /sup +/ mu /sup n/ pp collisions at square root s =1.96 TeV

2003

We report on a search for the flavor-changing neutral current decay D/sup 0/ to mu /sup +/ mu /sup -/ in pp collisions at square root s=1.96 TeV using 65 pb/sup -1/ of data collected by the CDF II experiment at the Fermilab Tevatron Collider. A displaced-track trigger selects long-lived D/sup 0/ candidates in the D/sup 0/ to mu /sup +/ mu /sup -/ search channel, the kinematically similar D/sup 0/ to pi /sup +/ pi /sup -/ channel used for normalization, the Cabibbo-favored D/sup 0/ to K/sup -/ pi /sup +/ channel used to optimize the selection criteria in an unbiased manner, and their charge conjugates. Finding no signal events in the D/sup 0/ to mu /sup +/ mu /sup -/ search window, we set an upper limit on the branching fraction B(D/sup 0/ to mu /sup +/ mu /sup -/) lt or=2.5*10/sup -6/ (3.3*10/sup -6/) at the 90% (95%) confidence level.

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