Resonant substructure in K. pi. pi. pi. decays of D mesons

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.45.2196· OSTI ID:7183735

Coffman, D; DeJongh, F; Dubois, G P; Eigen, G; Hitlin, D G; Matthews, C G; Mincer, A; Richman, J; Weinstein, A J; Wisniewski, W J; Zhu, Y ^[1]; Bolton, T; Bunnell, K O; Cassell, R E; Coward, D H; Kim, P C; Labs, J; Odian, A; Pitman, D; Schindler, R H ; Toki, W; Wasserbaech, S ^[2]; Drinkard, J J; Gatto, C; Heusch, C A; Lockman, W S; Scarlatella, M; Sadrozinski, H F.W.; Schalk, T L; Seiden, A; Weseler, S ^[3]; Eisenstein, B I; Freese, T; Gladding, G; Izen, J M; Stockdale, I E; Tripsas, B ^[4]; Mallik, U; Wang, M Z ^[5]; Brown, J; Burnett, T H; Li, A D; Mir, R; Mockett, P M; Nemat,; fPfP, ^[6]

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1. California Institute of Technology, Pasadena, California 91125 (United States)
2. Stanford Linear Acclerator Center, Stanford, California 94305 (United States)
3. University of California at Santa Cruz, Santa Cruz, California 95064 (United States)
4. University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)
5. University of Iowa, Iowa City, Iowa 52242 (United States)
6. Mark III Collaboration

We determine the resonant substructure of {ital D}{r arrow}{ital {bar K}}{pi}{pi}{pi} decays, extracting the relative fractions and phases of the amplitudes contributing to the {ital K}{sup {minus}}{pi}{sup +}{pi}{sup +}{pi}{sup {minus}}, {ital {bar K}} {sup 0}{pi}{sup +}{pi}{sup +}{pi}{sup {minus}}, {ital K}{sup {minus}}{pi}{sup +}{pi}{sup +}{pi}{sup 0}, and {ital {bar K}} {sup 0}{pi}{sup +}{pi}{sup {minus}}{pi}{sup 0} final states. We find that two-body decay modes account for at least 75% of these decays. We obtain branching ratios for {ital D}{r arrow}{ital {bar K}a}{sub 1}(1260), {ital D}{r arrow}{ital {bar K}} {sup *}{rho}, {ital D}{r arrow}{ital {bar K}}{sub 1}(1270){pi}, {ital D}{r arrow}{ital {bar K}}{sub 1}(1400){pi}, and {ital D}{sup 0}{r arrow}{ital {bar K}} {sup 0}{omega} decay modes, as well as for several three- and four-body decay modes. In the case of {ital D}{r arrow}{ital {bar K}a}{sub 1}(1260) and {ital D}{r arrow}{ital {bar K}} {sup *}{rho}, we obtain the branching ratios for all three possible isospin combinations, enabling us to extract the isospin-1/2 and -3/2 amplitudes, and their relative phases. We find that the isospin-3/2 amplitudes are suppressed relative to the isospin-1/2 amplitudes. This implies that the widths of the {ital D}{sup +} modes are suppressed relative to those of the {ital D}{sup 0}, confirming that an understanding of the lifetime difference of the {ital D}{sup 0} and {ital D}{sup +} depends on an understanding of two-body hadronic decays. For the {ital D}{r arrow}{ital {bar K}} {sup *}{rho} decay modes, we obtain detailed information on the polarization of the {ital {bar K}} {sup *} and {rho}. This enables us to place constraints on the form factors for {ital D}{r arrow}{ital {bar K}} {sup *} and {ital D}{r arrow}{rho} transitions.

• DOE Contract Number: AC02-87ER40318
• OSTI ID: 7183735
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 45:7; ISSN PRVDA; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662350* -- Decays of Mesons-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANTIKAONS
ANTIMATTER
ANTIPARTICLES
BOSONS
BRANCHING RATIO
CHARM PARTICLES
CHARMED MESONS
D MESONS
D NEUTRAL MESONS
D PLUS MESONS
DECAY
ELEMENTARY PARTICLES
FACTORIZATION
FIELD THEORIES
FORM FACTORS
HADRONIC PARTICLE DECAY
HADRONS
ISOSPIN
KAONS
KOBAYASHI-MASKAWA MATRIX
LIFETIME
MATRICES
MATRIX ELEMENTS
MATTER
MESONS
PARTICLE DECAY
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
SEMILEPTONIC DECAY
STRANGE MESONS
STRANGE PARTICLES
UNIFIED-FIELD THEORIES
WEAK PARTICLE DECAY