Data di Pubblicazione:
1995
Abstract:
Experimental evidence for the existence of orbitally excited B meson states is presented in an analysis of the B pi and B*pi distribution of Q = m(B**) - m(B(*)) - m(pi) using Z(0) decay data taken with the DELPHI detector at LEP. The mean Q-value of the decays B** --> B(*)pi is measured to be 284 +/-5 (stat.) +/- 15 (syst.) MeV/c(2), and the Gaussian width of the signal is 79 +/- 5 (stat.) +/- 8 (syst) MeV/c(2). This signal can be described as a single resonance of mass m = 5732+/-5 (stat.) +/- 20(syst.) MeV/c(2) and full width Gamma = 145 +/- 28 MeV/c(2). The observed shape is also consistent with the production of several broad and narrow states as predicted by the quark model and partly observed in the D-meson sector. The production rate of B** per b-jet is found to be 0.27 +/- 0.02(stat.) +/- 0.06 (syst.).
Tipologia CRIS:
03A-Articolo su Rivista
Elenco autori:
P. ABREU;W. ADAM;T. ADYE;E. AGASI;I. AJINENKO;R. ALEKSAN;G. D. ALEKSEEV;P. P. ALLPORT;S. ALMEHED;F. M. L.;S. J. ALVSVAAG;U. AMALDI;S. AMATO;A. ANDREAZZA;M. L. ANDRIEUX;P. ANTILOGUS;W. D. APEL;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;J. BAUDOT;K. H. BECKS;M. BEGALLI;P. BEILLIERE;Y. BELOKOPYTOV;P. BELTRAN;A. C. BENVENUTI;M. BERGGREN;D. BERTRAND;F. BIANCHI;M. BIGI;M. S. BILENKY;P. BILLOIR;J. BJARNE;D. BLOCH;M. BLUME;S. BLYTH;V. BOCCI;T. BOLOGNESE;M. BONESINI;W. BONIVENTO;P. S. L.;G. BORISOV;C. BOSIO;B. BOSTJANCIC;S. BOSWORTH;O. BOTNER;B. BOUQUET;C. BOURDARIOS;T. J. V.;M. BOZZO;P. BRANCHINI;K. D. BRAND;R. A. BRENNER;H. BRIAND;C. BRICMAN;L. BRILLAULT;R. C. A.;P. BRUCKMAN;J. M. BRUNET;L. BUGGE;T. BURAN;A. BUYS;M. CACCIA;M. CALVI;A. J. C.;T. CAMPORESI;V. CANALE;M. CANEPA;K. CANKOCAK;F. CAO;F. CARENA;P. CARRILHO;L. CARROLL;C. CASO;V. CASSIO;M. V. C.;A. CATTAI;F. R. CAVALLO;L. CERRITO;V. CHABAUD;A. CHAN;P. CHARPENTIER;L. CHAUSSARD;J. CHAUVEAU;P. CHECCHIA;G. A. CHELKOV;P. CHLIAPNIKOV;P. CHOCHULA;V. CHOROWICZ;J. T. M.;V. CINDRO;P. COLLINS;J. L. CONTRERAS;R. CONTRI;E. CORTINA;G. COSME;F. COSSUTTI;H. B. CRAWLEY;D. CRENNELL;G. CROSETTI;J. C. MAESTRO;S. CZELLAR;E. DAHLJENSEN;J. DAHM;B. DALMAGNE;M. DAM;G. DAMGAARD;A. DAUM;P. D. DAUNCEY;M. DAVENPORT;W. DASILVA;C. DEFOIX;G. DELLARICCA;P. DELPIERRE;N. DEMARIA;A. DEANGELIS;H. DEBOECK;W. DEBOER;S. DEBRABANDERE;C. DECLERCQ;M. D. M.;C. DELAVAISSIERE;B. DELOTTO;A. DEMIN;L. DEPAULA;C. DESAINTJEAN;H. DIJKSTRA;L. DICIACCIO;F. DJAMA;J. DOLBEAU;M. DONSZELMANN;K. DOROBA;M. DRACOS;J. DRESS;K. A. DREES;M. DRIS;Y. DUFOUR;F. DUPONT;D. EDSALL;R. EHRET;T. EKELOF;G. EKSPONG;M. ELSING;J. P. ENGEL;N. ERSHAIDAT;M. E. SANTO;D. FASSOULIOTIS;M. FEINDT;A. FENYUK;A. FERRER;T. A. FILIPPAS;A. FIRESTONE;H. FOETH;E. FOKITIS;F. FONTANELLI;F. FORMENTI;J. L. FOUSSET;B. FRANEK;P. FRENKIEL;D. C. FRIES;A. G. FRODESEN;R. FRUHWIRTH;F. FULDAQUENZER;H. FURSTENAU;J. FUSTER;D. GAMBA;M. GANDELMAN;C. GARCIA;J. GARCIA;C. GASPAR;U. GASPARINI;P. GAVILLET;E. N. GAZIS;D. GELE;J. P. GERBER;D. GILLESPIE;R. GOKIELI;B. GOLOB;J. J. G.;G. GOPAL;L. GORN;M. GORSKI;V. GRACCO;F. GRARD;E. GRAZIANI;G. GROSDIDIER;P. GUNNARSSON;J. GUY;U. HAEDINGER;E. HAHN;M. HAHN;S. HAHN;S. HAIDER;Z. HAJDUK;A. HAKANSSON;A. HALLGREN;K. HAMACHER;W. HAO;F. J. HARRIS;V. HEDBERG;R. HENRIQUES;J. J. HERNANDEZ;J. A. HERNANDO;P. HERQUET;H. HERR;T. L. HESSING;E. HIGON;H. J. HILKE;T. S. HILL;S. O. HOLMGREN;P. J. HOLT;D. HOLTHUIZEN;P. F. HONORE;M. HOULDEN;J. HRUBEC;K. HUET;K. HULTQVIST;P. IOANNOU;J. N. JACKSON;R. JACOBSSON;P. JALOCHA;R. JANIK;G. JARLSKOG;P. JARRY;B. JEANMARIE;E. K. JOHANSSON;L. JONSSON;P. JUILLOT;M. KAISER;G. KALMUS;F. KAPUSTA;M. KARLSSON;E. KARVELAS;S. KATSANEVAS;E. C. KATSOUFIS;R. KERANEN;B. A. KHOMENKO;N. N. KHOVANSKI;B. KING;N. J. KJAER;H. KLEIN;A. KLOVNING;P. KLUIT;J. H. KOEHNE;B. KOENE;P. KOKKINIAS;M. KORATZINOS;V. KOSTIOUKHINE;C. KOURKOUMELIS;O. KOUZNETSOV;P. H. KRAMER;M. KRAMMER;C. KREUTER;J. KROLIKOWSKI;I. KRONKVIST;Z. KRUMSTEIN;W. KRUPINSKI;P. KUBINEC;W. KUCEWICZ;K. KULKA;K. KURVINEN;C. LACASTA;I. LAKTINEH;C. LAMBROPOULOS;J. W. LAMSA;L. LANCERI;D. W. LANE;P. LANGEFELD;V. LAPIN;I. LAST;J. P. LAUGIER;R. LAUHAKANGAS;G. LEDER;F. LEDROIT;V. LEFEBURE;C. K. LEGAN;R. LEITNER;Y. LEMOIGNE;J. LEMONNE;G. LENZEN;V. LEPELTIER;T. LESIAK;R. LINDNER;A. LIPNIACKA;I. LIPPI;B. LOERSTAD;M. LOKAJICEK;J. G. LOKEN;A. LOPEZFERNANDEZ;M. A. L.;D. LOUKAS;J. J. LOZANO;P. LUTZ;L. LYONS;G. MAEHLUM;J. MAILLARD;A. MAIO;A. MALTEZOS;V. MALYCHEV;F. MANDL;J. MARCO;B. MARECHAL;M. MARGONI;J. C. MARIN;C. MARIOTT
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