Resonant substructure in K sup minus. pi. sup +. pi. sup +. pi. sup minus decays of D sup 0 mesons

We determine the resonant substructure of {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{pi}{sup +}{pi}{sup +}{pi}{sup {minus}} decays using a five-dimensional maximum-likelihood technique to extract the relative fractions and phases of the amplitudes contributing to this final state. We find that tw...

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Veröffentlicht in:	Physical review letters 1990-05, Vol.64:22
Hauptverfasser:	Adler, J., Bai, Z., Blaylock, G.T., Bolton, T., Brient, J., Browder, T.E., Brown, J.S., Bunnell, K.O., Burchell, M., Burnett, T.H., Cassell, R.E., Coffman, D., Cook, V., Coward, D.H., DeJongh, F., Dorfan, D.E., Drinkard, J., Dubois, G.P., Eigen, G., Einsweiler, K.F., Eisenstein, B.I., Freese, T., Gatto, C., Gladding, G., Grab, C., Hauser, J., Heusch, C.A., Hitlin, D.G., Izen, J.M., Kim, P.C., Koepke, L., Labs, J., Li, A., Lockman, W.S., Mallik, U., Matthews, C.G., Mincer, A.I., Mir, R., Mockett, P.M., Nemati, B., Odian, A., Parrish, L., Partridge, R., Pitman, D., Plaetzer, S.A., Richman, J.D., Sadrozinski, H.F.W., Scarlatella, M., Schalk, T.L., Schindler, R.H., Seiden, A., Simopoulos, C., Spadafora, A.L., Stockdale, I.E., Stockhausen, W., Toki, W., Tripsas, B., Villa, F., Wang, M.Z., Wasserbaech, S., Wattenberg, A., Weinstein, A.J., Weseler, S., Willutzki, H.J., Wisinski, D., Wisniewski, W.J., Xu, R., Zhu, Y.
Format:	Artikel
Sprache:	eng
Schlagworte:	645103 - High Energy Physics- Particle Interactions & Properties-Experimental- Strong Interactions & Baryon & Meson Properties ANNIHILATION BASIC INTERACTIONS BOSONS BRANCHING RATIO CHARM PARTICLES CHARMED MESONS D MESONS D NEUTRAL MESONS DATA DATA ANALYSIS DECAY ELECTROMAGNETIC INTERACTIONS ELECTRON-POSITRON INTERACTIONS ELEMENTARY PARTICLES ENERGY RANGE EXPERIMENTAL DATA GEV RANGE GEV RANGE 01-10 HADRONIC PARTICLE DECAY HADRONS INFORMATION INTERACTIONS KAONS KAONS MINUS LEPTON-LEPTON INTERACTIONS MESONS NUMERICAL DATA PARTICLE DECAY PARTICLE INTERACTIONS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PIONS PSEUDOSCALAR MESONS RESONANCE STRANGE MESONS STRANGE PARTICLES
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Zusammenfassung:	We determine the resonant substructure of {ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{pi}{sup +}{pi}{sup +}{pi}{sup {minus}} decays using a five-dimensional maximum-likelihood technique to extract the relative fractions and phases of the amplitudes contributing to this final state. We find that two-body decay modes account for at least 76% of all decays. We obtain branching ratios for several decay modes including {ital B}({ital D}{sup 0}{r arrow}{ital K}{sup {minus}}{ital a}{sub 1}{sup +}) =(9.0{plus minus}0.9{plus minus}1.7)%, {ital B}({ital D}{sup 0}{r arrow}{ital {bar K}} {sup 0}{rho}{sup 0})=(1.9{plus minus}0.3{plus minus}0.7)%, and {ital B}({ital D}{sup 0}{r arrow}{ital K}{sub 1}(1270){sup {minus}}{pi}{sup +}) =(1.8{plus minus}0.5 {plus minus}0.8)%. For the decay mode {ital D}{sup 0}{r arrow}{ital {bar K}} {sup 0}{rho}{sup 0}, the {ital {bar K}} {sup *0} and {rho}{sup 0} are found to be polarized with their spins oriented in the direction of their motion as seen from the {ital D}{sup 0} frame.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.64.2615