Search for rare and forbidden decays of the charmed meson D+

P.L. Frabetti,H.W.K. Cheung,J.P. Cumalat,Carlo Dallapiccola,J.F. Ginkel,W.E. Johns,M.S. Nehring,E.W. Vaandering,J.N. Butler,S. Cihangir,I. Gaines,P.H. Garbincius,L. Garren,S.A. Gourlay,D.J. Harding,P. Kasper,A. Kreymer,P. Lebrun,S. Shukla,M. Vittone,Stefano Bianco,F.L. Fabbri,S. Sarwar,A. Zallo,C. Cawlfield,R. Culbertson,R.W. Gardner,R. Greene,A. Rahimi,J. Wiss,G. Alimonti,G. Bellini,M. Boschini,D. Brambilla,B. Caccianiga,L. Cinquini,M. Di Corato,Paolo Dini,M. Giammarchi,P. Inzani,F. Leveraro,Sandra Malvezzi,Dario Livio Menasce,E. Meroni,L. Milazzo,L. Moroni,D. Pedrini,L. Perasso,F. Prelz,A. Sala,S. Sala,D. Torretta,D. Buchholz,D. Claes,B. Gobbi,B. O'Reilly,J.M. Bishop,N.M. Cason,C.J. Kennedy,G.N. Kim,T.F. Lin,D.L. Puseljic,R.C. Ruchti,W.D. Shephard,J.A. Swiatek,Z.Y. Wu,V. Arena,G. Boca,G. Bonomi,C. Castoldi,Gabriele Gianini,M. Merlo,S.P. Ratti,C. Riccardi,L. Viola,P. Vitulo,A. Lopez,L. Mendez,E. Montiel,D. Olaya,E. Ramirez,C. Rivera,Y. Zhang,G.P. Grim,Jonathan Link,V.S. Paolone,P.M. Yager,J.R. Wilson,J. Cao,M. Hosack,J. Hughes,P.D. Sheldon,F. Davenport,K. Danyo,T. Handler,B.G. Cheon,Y.S. Chung,J.S. Kang,K.Y. Kim,K.B. Lee,S.S. Myung; P.L. Frabetti; H.W.K. Cheung; J.P. Cumalat; Carlo Dallapiccola; J.F. Ginkel; W.E. Johns; M.S. Nehring; E.W. Vaandering; J.N. Butler; S. Cihangir; I. Gaines; P.H. Garbincius; L. Garren; S.A. Gourlay; D.J. Harding; P. Kasper; A. Kreymer; P. Lebrun; S. Shukla; M. Vittone; Stefano Bianco; F.L. Fabbri; S. Sarwar; A. Zallo; C. Cawlfield; R. Culbertson; R.W. Gardner; R. Greene; A. Rahimi; J. Wiss; G. Alimonti; G. Bellini; M. Boschini; D. Brambilla; B. Caccianiga; L. Cinquini; M. Di Corato; Paolo Dini; M. Giammarchi; P. Inzani; F. Leveraro; Sandra Malvezzi; Dario Livio Menasce; E. Meroni; L. Milazzo; L. Moroni; D. Pedrini; L. Perasso; F. Prelz; A. Sala; S. Sala; D. Torretta; D. Buchholz; D. Claes; B. Gobbi; B. O'Reilly; J.M. Bishop; N.M. Cason; C.J. Kennedy; G.N. Kim; T.F. Lin; D.L. Puseljic; R.C. Ruchti; W.D. Shephard; J.A. Swiatek; Z.Y. Wu; V. Arena; G. Boca; G. Bonomi; C. Castoldi; Gabriele Gianini; M. Merlo; S.P. Ratti; C. Riccardi; L. Viola; P. Vitulo; A. Lopez; L. Mendez; E. Montiel; D. Olaya; E. Ramirez; C. Rivera; Y. Zhang; G.P. Grim; Jonathan Link; V.S. Paolone; P.M. Yager; J.R. Wilson; J. Cao; M. Hosack; J. Hughes; P.D. Sheldon; F. Davenport; K. Danyo; T. Handler; B.G. Cheon; Y.S. Chung; J.S. Kang; K.Y. Kim; K.B. Lee; S.S. Myung

Search for rare and forbidden decays of the charmed meson D+

P.L. Frabetti,H.W.K. Cheung,J.P. Cumalat,Carlo Dallapiccola,J.F. Ginkel,W.E. Johns,M.S. Nehring,E.W. Vaandering,J.N. Butler,S. Cihangir,I. Gaines,P.H. Garbincius,L. Garren,S.A. Gourlay,D.J. Harding,P. Kasper,A. Kreymer,P. Lebrun,S. Shukla,M. Vittone,Stefano Bianco,F.L. Fabbri,S. Sarwar,A. Zallo,C. Cawlfield,R. Culbertson,R.W. Gardner,R. Greene,A. Rahimi,J. Wiss,G. Alimonti,G. Bellini,M. Boschini,D. Brambilla,B. Caccianiga,L. Cinquini,M. Di Corato,Paolo Dini,M. Giammarchi,P. Inzani,F. Leveraro,Sandra Malvezzi,Dario Livio Menasce,E. Meroni,L. Milazzo,L. Moroni,D. Pedrini,L. Perasso,F. Prelz,A. Sala,S. Sala,D. Torretta,D. Buchholz,D. Claes,B. Gobbi,B. O'Reilly,J.M. Bishop,N.M. Cason,C.J. Kennedy,G.N. Kim,T.F. Lin,D.L. Puseljic,R.C. Ruchti,W.D. Shephard,J.A. Swiatek,Z.Y. Wu,V. Arena,G. Boca,G. Bonomi,C. Castoldi,Gabriele Gianini,M. Merlo,S.P. Ratti,C. Riccardi,L. Viola,P. Vitulo,A. Lopez,L. Mendez,E. Montiel,D. Olaya,E. Ramirez,C. Rivera,Y. Zhang,G.P. Grim,Jonathan Link,V.S. Paolone,P.M. Yager,J.R. Wilson,J. Cao,M. Hosack,J. Hughes,P.D. Sheldon,F. Davenport,K. Danyo,T. Handler,B.G. Cheon,Y.S. Chung,J.S. Kang,K.Y. Kim,K.B. Lee,S.S. Myung;P.L. Frabetti;H.W.K. Cheung;J.P. Cumalat;Carlo Dallapiccola;J.F. Ginkel;W.E. Johns;M.S. Nehring;E.W. Vaandering;J.N. Butler;S. Cihangir;I. Gaines;P.H. Garbincius;L. Garren;S.A. Gourlay;D.J. Harding;P. Kasper;A. Kreymer;P. Lebrun;S. Shukla;M. Vittone;Stefano Bianco;F.L. Fabbri;S. Sarwar;A. Zallo;C. Cawlfield;R. Culbertson;R.W. Gardner;R. Greene;A. Rahimi;J. Wiss;G. Alimonti;G. Bellini;M. Boschini;D. Brambilla;B. Caccianiga;L. Cinquini;M. Di Corato;Paolo Dini;M. Giammarchi;P. Inzani;F. Leveraro;Sandra Malvezzi;Dario Livio Menasce;E. Meroni;L. Milazzo;L. Moroni;D. Pedrini;L. Perasso;F. Prelz;A. Sala;S. Sala;D. Torretta;D. Buchholz;D. Claes;B. Gobbi;B. O'Reilly;J.M. Bishop;N.M. Cason;C.J. Kennedy;G.N. Kim;T.F. Lin;D.L. Puseljic;R.C. Ruchti;W.D. Shephard;J.A. Swiatek;Z.Y. Wu;V. Arena;G. Boca;G. Bonomi;C. Castoldi;Gabriele Gianini;M. Merlo;S.P. Ratti;C. Riccardi;L. Viola;P. Vitulo;A. Lopez;L. Mendez;E. Montiel;D. Olaya;E. Ramirez;C. Rivera;Y. Zhang;G.P. Grim;Jonathan Link;V.S. Paolone;P.M. Yager;J.R. Wilson;J. Cao;M. Hosack;J. Hughes;P.D. Sheldon;F. Davenport;K. Danyo;T. Handler;B.G. Cheon;Y.S. Chung;J.S. Kang;K.Y. Kim;K.B. Lee;S.S. Myung;

physics letters b 1997 Vol. 398 pp. 239-244

125

myung1997physicssearch

Abstract

We report on the results of a search for fourteen flavor changing neutral current, lepton number violating, or lepton family number violating decays of the charmed meson D+ in the large charm sample recorded by the Fermilab photoproduction experiment E687. No evidence is seen for these rare and standard-model-forbidden decays, of the form D+ → h±ℓ∓ℓ+ (with h = π, K and ℓ = e, μ); we determine 90% confidence level upper limits on their absolute branching fractions in the range (9–20) × 10−5.

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standard model confidence level

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10.1016/s0370-2693(97)00229-3

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