Data di Pubblicazione:
1993
Abstract:
Evidence for the production of b-flavoured baryons in Z0 decays is reported from the analysis of 365 000 hadronic events collected by the DELPHI detector. Assuming that most of the weakly decaying b flavoured baryons produced by the Z0 are LAMBDA(b), the observed signal of (LAMBDAl- + LAMBDAl+BAR) pairs, where l is a high transverse momentum lepton in the same jet as the LAMBDA, leads to a production rate: f (b --> LAMBDA(b)) x Br(LAMBDA(b) --> LAMBDAlnuX) = (0.41 +/- 0.13 +/- 0.09)%. Using a sample of 18 reconstructed LAMBDA(b) decay vertices, the lifetime is determined to be tau(LAMBDA(b)) = ( 1.04(-0.38)+0.48 +/- 0.10) ps.
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
P. ABREU;W. ADAM;T. ADYE;E. AGASI;I. AJINENKO;R. ALEKSAN;G. D. ALEKSEEV;A. ALGERI;P. ALLEN;S. ALMEHED;S. J. ALVSVAAG;U. AMALDI;A. ANDREAZZA;P. ANTILOGUS;W. D. APEL;R. J. APSIMON;Y. ARNOUD;B. ASMAN;J. E. AUGUSTIN;A. AUGUSTINUS;P. BAILLON;P. BAMBADE;F. BARAO;R. BARATE;G. BARBIELLINI;D. Y. BARDIN;G. J. BARKER;A. BARONCELLI;O. BARRING;J. A. BARRIO;W. BARTL;M. J. BATES;M. BATTAGLIA;M. BAUBILLIER;K. H. BECKS;C. J. BEESTON;M. BEGALLI;P. BEILLIERE;Y. BELOKOPYTOV;P. BELTRAN;D. BENEDIC;A. C. BENVENUTI;M. BERGGREN;D. BERTRAND;F. BIANCHI;M. S. BILENKY;P. BILLOIR;J. BJARNE;D. BLOCH;S. BLYTH;V. BOCCI;P. N. BOGOLUBOV;T. BOLOGNESE;M. BONESINI;W. BONIVENTO;P. S. L.;G. BORISOV;H. BORNER;C. BOSIO;B. BOSTJANCIC;S. BOSWORTH;O. BOTNER;B. BOUQUET;C. BOURDARIOS;T. J. V.;M. BOZZO;S. BRAIBANT;P. BRANCHINI;K. D. BRAND;R. A. BRENNER;H. BRIAND;C. BRICMAN;R. C. A.;N. BRUMMER;J. M. BRUNET;L. BUGGE;T. BURAN;H. BURMEISTER;J. A. M.;M. CACCIA;M. CALVI;A. J. C.;R. CAMPION;T. CAMPORESI;V. CANALE;F. CAO;F. CARENA;L. CARROLL;C. CASO;M. V. C.;A. CATTAI;F. R. CAVALLO;L. CERRITO;V. CHABAUD;A. CHAN;M. CHAPKIN;P. CHARPENTIER;L. CHAUSSARD;J. CHAUVEAU;P. CHECCHIA;G. A. CHELKOV;L. CHEVALIER;P. CHLIAPNIKOV;V. CHOROWICZ;J. T. M.;P. COLLINS;J. L. CONTRERAS;R. CONTRI;E. CORTINA;G. COSME;F. COUCHOT;H. B. CRAWLEY;D. CRENNELL;G. CROSETTI;M. CROZON;J. C. MAESTRO;S. CZELLAR;E. DAHLJENSEN;B. DALMAGNE;M. DAM;G. DAMGAARD;E. DAUBIE;A. DAUM;P. D. DAUNCEY;M. DAVENPORT;P. DAVID;J. DAVIES;W. DASILVA;C. DEFOIX;P. DELPIERRE;N. DEMARIA;A. DEANGELIS;H. DEBOECK;W. DEBOER;C. DECLERCQ;M. D. M.;N. DEGROOT;C. DELAVAISSIERE;B. DELOTTO;A. DEMIN;H. DIJKSTRA;L. DICIACCIO;J. DOLBEAU;M. DONSZELMANN;K. DOROBA;M. DRACOS;J. DREES;M. DRIS;Y. DUFOUR;F. DUPONT;D. EDSALL;L. O. EEK;P. A. M.;R. EHRET;T. EKELOF;G. EKSPONG;A. E. PEISERT;J. P. ENGEL;N. ERSHAIDAT;D. FASSOULIOTIS;M. FEINDT;A. FENYUK;M. F. ALONSO;A. FERRER;T. A. FILIPPAS;A. FIRESTONE;H. FOETH;E. FOKITIS;F. FONTANELLI;K. A. J.;J. L. FOUSSET;S. FRANCON;B. FRANEK;P. FRENKIEL;D. C. FRIES;A. G. FRODESEN;R. FRUHWIRTH;F. FULDAQUENZER;K. FURNIVAL;H. FURSTENAU;J. FUSTER;D. GAMBA;C. GARCIA;J. GARCIA;C. GASPAR;U. GASPARINI;P. GAVILLET;E. N. GAZIS;J. P. GERBER;P. GIACOMELLI;R. GOKIELI;B. GOLOB;V. M. GOLOVATYUK;J. J. GOMEZ;Y. CADENAS;G. GOPAL;L. GORN;M. GORSKI;V. GRACCO;A. GRANT;F. GRARD;E. GRAZIANI;G. GROSDIDIER;E. GROSS;P. GROSSEWIESMANN;B. GROSSETETE;J. GUY;U. HAEDINGER;F. HAHN;M. HAHN;S. HAIDER;Z. HAJDUK;A. HAKANSSON;A. HALLGREN;K. HAMACHER;G. H. DEMONCHENAULT;W. HAO;F. J. HARRIS;V. HEDBERG;T. HENKES;J. J. HERNANDEZ;P. HERQUET;H. HERR;T. L. HESSING;I. HIETANEN;C. O. HIGGINS;E. HIGON;H. J. HILKE;S. D. HODGSON;T. HOFMOKL;S. O. HOLMGREN;D. HOLTHUIZEN;P. F. HONORE;J. E. HOOPER;M. HOULDEN;J. HRUBEC;K. HUET;P. O. HULTH;K. HULTQVIST;P. IOANNOU;P. S. IVERSEN;J. N. JACKSON;P. JALOCHA;G. JARLSKOG;P. JARRY;B. JEANMARIE;E. K. JOHANSSON;D. JOHNSON;M. JONKER;L. JONSSON;P. JUILLOT;G. KALKANIS;G. KALMUS;F. KAPUSTA;M. KARLSSON;E. KARVELAS;S. KATSANEVAS;E. C. KATSOUFIS;R. KERANEN;J. KESTEMAN;B. A. KHOMENKO;N. N. KHOVANSKI;B. KING;N. J. KJAER;H. KLEIN;A. KLOVNING;P. KLUIT;A. KOCHMEHRIN;J. H. KOEHNE;B. KOENE;P. KOKKINIAS;M. KORATZINOS;K. KORCYL;A. V. KORYTOV;V. KOSTIOUKHINE;C. KOURKOUMELIS;O. KOUZNETSOV;P. H. KRAMER;C. KREUTER;J. KROLIKOWSKI;I. KRONKVIST;U. KRUENERMARQUIS;W. KUCEWICZ;K. KULKA;K. KURVINEN;C. LACASTA;C. LAMBROPOULOS;J. W. LAMSA;L. LANCERI;V. LAPIN;J. P. LAUGIER;R. LAUHAKANGAS;G. LEDER;F. LEDROIT;R. LEITNER;Y. LEMOIGNE;J. LEMONNE;G. LENZEN;V. LEPELTIER;T. LESIAK;J. M. LEVY;E. LIEB;D. LIKO;J. LINDGREN;R. LINDNER;A. LIPNIACKA;I. LIPPI;B. LOERSTAD;M. LOKAJICEK;J. G. LOKEN;A. LOPEZFERNANDEZ;M. A. L.;M. LOS;D. LOUKAS;J. J. LOZANO;P. LUTZ;L. LYONS;G. MAEHLUM;J.
Link alla scheda completa:
Pubblicato in: