INCLUSIVE NEUTRAL VECTOR-MESON PRODUCTION IN HADRONIC Z0 DECAYS

INCLUSIVE NEUTRAL VECTOR-MESON PRODUCTION IN HADRONIC Z0 DECAYS

Results are reported of a study of neutral vector meson production in multihadron Z0 decays in the OPAL experiment at LEP. Pions and kaons have been identified by specific ionisation energy loss and K+/- pi-/+ and K+K- mass spectra have been fitted. in bins of the scaled momentum variable x(p), to c...

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Veröffentlicht in:Zeitschrift für Physik. C, Particles and fields Particles and fields, 1992-12, Vol.56 (4), p.521-535
Hauptverfasser: ACTON, PD, ALEXANDER, G, ALLISON, J, ALLPORT, PP, ANDERSON, KJ, ARCELLI, S, ASTBURY, A, AXEN, D, AZUELOS, G, BAHAN, GA, BAINES, JTM, BALL, AH, BANKS, J, BARLOW, RJ, BARNETT, S, BATLEY, BEAUDOIN, G, BECK, A, BECKER, J, BEHNKE, T, BELL, KW, BELLA, G, BERLICH, P, BETHKE, S, BIEBEL, O, BINDER, U, BLOODWORTH, IJ, BOCK, P, BODEN, B, BOSCH, HM, BOUGEROLLE, S, BREUKER, H, BROWN, RM, BUIJS, A, BURCKHART, HJ, CAPILUPPI, P, CARNEGIE, RK, CARTER, AA, CARTER, CHANG, CY, CHARLTON, DG, CLARKE, PEL, COHEN, CLAYTON, JC, COLLINS, WJ, CONBOY, JE, COOPER, M, COUPLAND, M, CUFFIANI, M, DADO, S, DALLAVALLE, GM, DEJONG, S, DELPOZO, LA, DENG, H, DIECKMANN, A, DITTMAR, M, DIXIT, MS, SILVA, EDE, DUBOSCQ, JE, DUCHOVNI, E, DUCKECK, G, DUERDOTH, IP, DUMAS, DJP, ELCOMBE, PA, ESTABROOKS, PG, ETZION, E, EVANS, HG, FABBRI, F, FINCKEKEELER, M, FISCHER, HM, FONG, DG, FOUCHER, M, GAIDOT, A, GANEL, O, GARY, JW, GASCON, J, MCGOWAN, RF, GEDDES, NI, GEICHGIMBEL, C, GENSLER, SW, GENTIT, FX, GIACOMELLI, G, GIBSON, GIBSON, WR, GILLIES, JD, GOLDBERG, J, GOODRICK, MJ, GORN, W, GRANDI, C, GRANT, FC, HAGEMANN, J, HANSON, GG, HANSROUL, M, HARGROVE, CK, HARRSION, PF, HART, J, HATTERSLEY, PM, HAUSCHILD, M, HAWKES, CM, HEFLIN, E
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Sprache:eng
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Zusammenfassung:Results are reported of a study of neutral vector meson production in multihadron Z0 decays in the OPAL experiment at LEP. Pions and kaons have been identified by specific ionisation energy loss and K+/- pi-/+ and K+K- mass spectra have been fitted. in bins of the scaled momentum variable x(p), to combinations of resonance signals and non-resonant backgrounds. Rates re given for K*(892)0 and phi (1020), and production cross sections are compared to the predictions of Monte Carlo models. Overall multiplicities have been determined as 0.76+/-0.07+/-0.06 K*(892)0 and 0.086+/-0.015+/-0.010 phi (1020) per hadronic Z0 decay (the quoted errors are respectively statistical and systematic). Momentum dependent distortions of the pipi mass spectra, possibly associated indirectly with Bose-Einstein effects. have prevented reliable measurement of the rho (770)0 cross section in this study.
ISSN:0170-9739