The production of B* mesons in Z decays has been measured at LEP with the L3 detector. A sample of Z --> b ($) over bar b events was obtained by tagging muons in 1.6 million hadronic Z decays collected in 1991, 1992 and 1993. A signal with a peak value of E(y) = 46.3+/-1.9 (stat) MeV in the B rest frame energy spectrum was interpreted to come from the decay B* --> gamma B. The inclusive production ratio of B* mesons relative to B mesons was determined from a fit to the spectrum to be N-B*/(N-B* + N-B) = 0.76+/-0.08+/-0.06, where the first error is statistical and the second is systematic.

B-asterisk Production In Z-decays At Lep / M. ACCIARRI;A. ADAM;O. ADRIANI;M. AGUILARBENITEZ;S. AHLEN;J. ALCARAZ;A. ALOISIO;G. ALVERSON;M. G. ALVIGGI;G. AMBROSI;Q. AN;H. ANDERHUB;A. L. ANDERSON;V. P. ANDREEV;T. ANGELESCU;L. ANTONOV;D. ANTREASYAN;G. ALKHAZOV;P. ARCE;A. AREFIEV;T. AZEMOON;T. AZIZ;P. V. K.;P. BAGNAIA;J. A. BAKKEN;L. BAKSAY;R. C. BALL;S. BANERJEE;K. BANICZ;R. BARILLERE;L. BARONE;A. BASCHIROTTO;M. BASILE;R. BATTISTON;A. BAY;F. BECATTINI;U. BECKER;F. BEHNER;G. L. BENCZE;J. BERDUGO;P. BERGES;B. BERTUCCI;B. L. BETEV;M. BIASINI;A. BILAND;G. M. BILEI;R. BIZZARRI;J. J. BLAISING;G. J. BOBBINK;R. BOCK;A. BOHM;B. BORGIA;A. BOUCHAM;D. BOURILKOV;M. BOURQUIN;D. BOUTIGNY;B. BOUWENS;E. BRAMBILLA;J. G. BRANSON;V. BRIGLJEVIC;I. C. BROCK;M. BROOKS;A. BUJAK;J. D. BURGER;W. J. BURGER;C. BURGOS;J. BUSENITZ;A. BUYTENHUIJS;A. BYKOV;X. D. CAI;M. CAPELL;G. C. ROMEO;M. CARIA;G. CARLINO;A. M. CARTACCI;J. CASAUS;R. CASTELLO;N. CAVALLO;M. CERRADA;F. CESARONI;M. CHAMIZO;Y. H. CHANG;U. K. CHATURVEDI;M. CHEMARIN;A. CHEN;C. CHEN;G. CHEN;G. M. CHEN;H. F. CHEN;H. S. CHEN;M. CHEN;G. CHIEFARI;C. Y. CHIEN;M. T. CHOI;S. CHUNG;L. CIFARELLI;F. CINDOLO;C. CIVININI;I. CLARE;R. CLARE;T. E. COAN;H. O. COHN;G. COIGNET;N. COLINO;S. COSTANTINI;F. COTOROBAI;B. DELACRUZ;X. T. CUI;X. Y. CUI;T. S. DAI;R. DALESSANDRO;R. DEASMUNDIS;A. DEGRE;K. DEITERS;E. DENES;P. DENES;F. DENOTARISTEFANI;D. DIBITONTO;M. DIEMOZ;H. R. DIMITROV;C. DIONISI;M. DITTMAR;L. DJAMBAZOV;I. DORNE;M. T. DOVA;E. DRAGO;D. DUCHESNEAU;F. DUHEM;P. DUINKER;I. DURAN;S. DUTTA;S. EASO;H. ELMAMOUNI;A. ENGLER;F. J. EPPLING;F. C. ERNE;P. EXTERMANN;R. FABBRETTI;M. FABRE;S. FALCIANO;A. FAVARA;J. FAY;M. FELCINI;T. FERGUSSON;D. FERNANDEZ;G. FERNANDEZ;F. FERRONI;H. FESEFELDT;E. FIANDRINI;J. H. FIELD;F. FILTHAUT;P. H. FISHER;G. FORCONI;L. FREDJ;K. FREUDENREICH;M. GAILLOUD;Y. GALAKTIONOV;E. GALLO;S. N. GANGULI;P. GARCIAABIA;S. GENTILE;J. GERALD;N. GHEORDANESCU;S. GIAGU;S. GOLDFARB;J. GOLDSTEIN;Z. F. GONG;E. GONZALEZ;A. GOUGAS;D. GOUJON;G. GRATTA;M. W. GRUENEWALD;C. GU;M. GUANZIROLI;V. K. GUPTA;A. GURTU;H. R. GUSTAFSON;L. J. GUTAY;A. HASAN;D. HAUSCHILDT;J. T. HE;T. HEBBEKER;M. HEBERT;A. HERVE;K. HILGERS;H. HOFER;H. HOORANI;S. R. HOU;G. HU;B. ILLE;M. M. ILYAS;V. INNOCENTE;H. JANSSEN;B. N. JIN;L. W. JONES;P. DEJONG;I. JOSAMUTUBERRIA;A. KASSER;R. A. KHAN;Y. KAMYSHKOV;P. KAPINOS;J. S. KAPUSTINSKY;Y. KARYOTAKIS;M. KAUR;S. KHOKHAR;M. N. KIENZLEFOCACCI;D. KIM;J. K. KIM;S. C. KIM;Y. G. KIM;W. W. KINNISON;A. KIRBY;D. KIRKBY;S. KIRSCH;W. KITTEL;A. KLIMENTOV;A. C. KONIG;E. KOFFEMAN;O. KORNADT;V. KOUTSENKO;A. KOULBARDIS;R. W. KRAEMER;T. KRAMER;V. R. KRASTEV;W. KRENZ;H. KUIJTEN;K. S. KUMAR;A. KUNIN;P. L. DEGUEVARA;G. LANDI;D. LANSKE;S. LANZANO;A. LEBEDEV;P. LECOMTE;P. LECOQ;P. LECOULTRE;D. M. LEE;J. S. LEE;K. Y. LEE;I. LEEDOM;C. LEGGETT;J. M. LEGOFF;R. LEISTE;M. LENTI;E. LEONARDI;P. LEVTCHENKO;C. LI;E. LIEB;W. T. LIN;F. L. LINDE;B. LINDEMANN;L. LISTA;Y. LIU;W. LOHMANN;E. LONGO;W. LU;Y. S. LU;J. M. LUBBERS;K. LUBELSMEYER;C. LUCI;D. LUCKEY;L. LUDOVICI;L. LUMINARI;W. LUSTERMANN;W. G. MA;M. MACDERMOTT;M. MAITY;L. MALGERI;R. MALIK;A. MALININ;C. MANA;S. MANGLA;M. MAOLINBAY;P. MARCHESINI;A. MARIN;J. P. MARTIN;F. MARZANO;G. G. G.;K. MAZUMDAR;P. MCBRIDE;T. MCMAHON;D. MCNALLY;S. MELE;M. MERK;L. MEROLA;M. MESCHINI;W. J. METZGER;Y. MI;A. MIHUL;G. B. MILLS;Y. MIR;G. MIRABELLI;J. MNICH;M. MOLLER;V. MONACO;B. MONTELEONI;R. MORAND;S. MORGANTI;N. E. MOULAI;R. MOUNT;S. MULLER;E. NAGY;M. NAPOLITANO;F. NESSITEDALDI;H. NEWMAN;M. A. NIAZ;A. NIPPE;H. NOWAK;G. ORGANTINI;D. PANDOULAS;S. PAOLETTI;P. PAOLUCCI;G. PASCALE;G. PASSALEVA;S. PATRICELLI;T. PAUL;M. PAULUZZI;C. PAUS;F. PAUSS;Y. J. PEI;S. PENSOTTI;D. PERRETGALLIX;A. PEVSNER;D. PICCOLO;M. PIERI;J. C. PINTO;P. A. PIROUE;E. PISTOLESI;F. PLASIL;V. PLYASKIN;M. POHL;V. POJIDAEV;H. POSTEMA;N. PRODUIT;J. M. QIAN;K. N. QURESHI;R. RAGHAVAN;G. RAHALCALLOT;P. G. RANCOITA;M. RATTAGGI;G. RAVEN;P. RAZIS;K. READ;M. REDAELLI;D. REN;Z. REN;M. RESCIGNO;S. REUCROFT;A. RICKER;S. RIEMAN;B. C. RIEMERS;K. RILES;O. RIND;H. A. RIZVI;S. RO;A. ROBOHM;F. J. RODRIGUEZ;B. P. ROE;M. ROHNER;S. ROHNER;L. ROMERO;S. ROSIERLEES;R. ROSMALEN;P. ROSSELET;W. VANROSSUM;S. ROTH;A. RUBBIA;J. A. RUBIO;H. RYKACZEWSKI;J. SALICIO;J. M. SALICIO;E. SANCHEZ;G. S. SANDERS;A. SANTOCCHIA;M. E. SARAKINOS;S. SARKAR;G. SARTORELLI;M. SASSOWSKY;G. SAUVAGE;C. SCHAFER;V. SCHEGELSKY;D. SCHMITZ;P. SCHMITZ;M. SCHNEEGANS;N. SCHOLZ;H. SCHOPPER;D. J. SCHOTANUS;S. SHOTKIN;H. J. SCHREIBER;J. SHUKLA;R. SCHULTE;K. SCHULTZE;J. SCHWENKE;G. SCHWERING;C. SCIACCA;I. SCOTT;R. SEHGAL;P. G. SEILER;J. C. SENS;L. SERVOLI;I. SHEER;S. SHEVCHENKO;X. R. SHI;E. SHUMILOV;V. SHOUTKO;D. SON;A. SOPCZAK;V. SOULIMOV;C. SPARTIOTIS;T. SPICKERMANN;P. SPILLANTINI;M. STEUER;D. P. STICKLAND;F. STICOZZI;H. STONE;K. STRAUCH;K. SUDHAKAR;G. SULTANOV;L. Z. SUN;G. F. SUSINNO;H. SUTER;J. D. SWAIN;A. A. SYED;X. W. TANG;L. TAYLOR;R. TIMELLINI;S. C. C.;S. M. TING;O. TOKER;M. TONUTTI;S. C. TONWAR;J. TOTH;G. TROWITZSCH;A. TSAREGORODTSEV;T. TSIPOLITIS;C. TULLY;J. ULBRICHT;L. URBAN;U. UWER;E. VALENTE;R. T. VANDEWALLE;I. VETLITSKY;G. VIERTEL;P. VIKAS;U. VIKAS;M. VIVARGENT;H. VOGEL;H. VOGT;I. VOROBIEV;A. A. VOROBYOV;A. A. VOROBYOV;L. VUILLEUMIER;M. WADHWA;W. WALLRAFF;J. C. WANG;X. L. WANG;Y. F. WANG;Z. M. WANG;A. WEBER;J. WEBER;R. WEILL;C. WILLMOTT;F. WITTGENSTEIN;D. WRIGHT;S. X. WU;S. WYNHOFF;Z. Z. XU;B. Z. YANG;C. G. YANG;G. YANG;X. Y. YAO;C. H. YE;J. B. YE;Q. YE;S. C. YEH;J. M. YOU;N. YUNUS;M. YZERMAN;C. ZACCARDELLI;P. ZEMP;M. ZENG;Y. ZENG;D. H. ZHANG;Z. P. ZHANG;B. ZHOU;G. J. ZHOU;J. F. ZHOU;R. Y. ZHU;A. ZICHICHI;B. C. C.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 345(1995), pp. 589-597. [10.1016/0370-2693(95)01611-S]

B-asterisk Production In Z-decays At Lep

ADRIANI, OSCAR;D'ALESSANDRO, RAFFAELLO;M. LENTI;
1995

Abstract

The production of B* mesons in Z decays has been measured at LEP with the L3 detector. A sample of Z --> b ($) over bar b events was obtained by tagging muons in 1.6 million hadronic Z decays collected in 1991, 1992 and 1993. A signal with a peak value of E(y) = 46.3+/-1.9 (stat) MeV in the B rest frame energy spectrum was interpreted to come from the decay B* --> gamma B. The inclusive production ratio of B* mesons relative to B mesons was determined from a fit to the spectrum to be N-B*/(N-B* + N-B) = 0.76+/-0.08+/-0.06, where the first error is statistical and the second is systematic.
345
589
597
M. ACCIARRI;A. ADAM;O. ADRIANI;M. AGUILARBENITEZ;S. AHLEN;J. ALCARAZ;A. ALOISIO;G. ALVERSON;M. G. ALVIGGI;G. AMBROSI;Q. AN;H. ANDERHUB;A. L. ANDERSON;V. P. ANDREEV;T. ANGELESCU;L. ANTONOV;D. ANTREASYAN;G. ALKHAZOV;P. ARCE;A. AREFIEV;T. AZEMOON;T. AZIZ;P. V. K.;P. BAGNAIA;J. A. BAKKEN;L. BAKSAY;R. C. BALL;S. BANERJEE;K. BANICZ;R. BARILLERE;L. BARONE;A. BASCHIROTTO;M. BASILE;R. BATTISTON;A. BAY;F. BECATTINI;U. BECKER;F. BEHNER;G. L. BENCZE;J. BERDUGO;P. BERGES;B. BERTUCCI;B. L. BETEV;M. BIASINI;A. BILAND;G. M. BILEI;R. BIZZARRI;J. J. BLAISING;G. J. BOBBINK;R. BOCK;A. BOHM;B. BORGIA;A. BOUCHAM;D. BOURILKOV;M. BOURQUIN;D. BOUTIGNY;B. BOUWENS;E. BRAMBILLA;J. G. BRANSON;V. BRIGLJEVIC;I. C. BROCK;M. BROOKS;A. BUJAK;J. D. BURGER;W. J. BURGER;C. BURGOS;J. BUSENITZ;A. BUYTENHUIJS;A. BYKOV;X. D. CAI;M. CAPELL;G. C. ROMEO;M. CARIA;G. CARLINO;A. M. CARTACCI;J. CASAUS;R. CASTELLO;N. CAVALLO;M. CERRADA;F. CESARONI;M. CHAMIZO;Y. H. CHANG;U. K. CHATURVEDI;M. CHEMARIN;A. CHEN;C. CHEN;G. CHEN;G. M. CHEN;H. F. CHEN;H. S. CHEN;M. CHEN;G. CHIEFARI;C. Y. CHIEN;M. T. CHOI;S. CHUNG;L. CIFARELLI;F. CINDOLO;C. CIVININI;I. CLARE;R. CLARE;T. E. COAN;H. O. COHN;G. COIGNET;N. COLINO;S. COSTANTINI;F. COTOROBAI;B. DELACRUZ;X. T. CUI;X. Y. CUI;T. S. DAI;R. DALESSANDRO;R. DEASMUNDIS;A. DEGRE;K. DEITERS;E. DENES;P. DENES;F. DENOTARISTEFANI;D. DIBITONTO;M. DIEMOZ;H. R. DIMITROV;C. DIONISI;M. DITTMAR;L. DJAMBAZOV;I. DORNE;M. T. DOVA;E. DRAGO;D. DUCHESNEAU;F. DUHEM;P. DUINKER;I. DURAN;S. DUTTA;S. EASO;H. ELMAMOUNI;A. ENGLER;F. J. EPPLING;F. C. ERNE;P. EXTERMANN;R. FABBRETTI;M. FABRE;S. FALCIANO;A. FAVARA;J. FAY;M. FELCINI;T. FERGUSSON;D. FERNANDEZ;G. FERNANDEZ;F. FERRONI;H. FESEFELDT;E. FIANDRINI;J. H. FIELD;F. FILTHAUT;P. H. FISHER;G. FORCONI;L. FREDJ;K. FREUDENREICH;M. GAILLOUD;Y. GALAKTIONOV;E. GALLO;S. N. GANGULI;P. GARCIAABIA;S. GENTILE;J. GERALD;N. GHEORDANESCU;S. GIAGU;S. GOLDFARB;J. GOLDSTEIN;Z. F. GONG;E. GONZALEZ;A. GOUGAS;D. GOUJON;G. GRATTA;M. W. GRUENEWALD;C. GU;M. GUANZIROLI;V. K. GUPTA;A. GURTU;H. R. GUSTAFSON;L. J. GUTAY;A. HASAN;D. HAUSCHILDT;J. T. HE;T. HEBBEKER;M. HEBERT;A. HERVE;K. HILGERS;H. HOFER;H. HOORANI;S. R. HOU;G. HU;B. ILLE;M. M. ILYAS;V. INNOCENTE;H. JANSSEN;B. N. JIN;L. W. JONES;P. DEJONG;I. JOSAMUTUBERRIA;A. KASSER;R. A. KHAN;Y. KAMYSHKOV;P. KAPINOS;J. S. KAPUSTINSKY;Y. KARYOTAKIS;M. KAUR;S. KHOKHAR;M. N. KIENZLEFOCACCI;D. KIM;J. K. KIM;S. C. KIM;Y. G. KIM;W. W. KINNISON;A. KIRBY;D. KIRKBY;S. KIRSCH;W. KITTEL;A. KLIMENTOV;A. C. KONIG;E. KOFFEMAN;O. KORNADT;V. KOUTSENKO;A. KOULBARDIS;R. W. KRAEMER;T. KRAMER;V. R. KRASTEV;W. KRENZ;H. KUIJTEN;K. S. KUMAR;A. KUNIN;P. L. DEGUEVARA;G. LANDI;D. LANSKE;S. LANZANO;A. LEBEDEV;P. LECOMTE;P. LECOQ;P. LECOULTRE;D. M. LEE;J. S. LEE;K. Y. LEE;I. LEEDOM;C. LEGGETT;J. M. LEGOFF;R. LEISTE;M. LENTI;E. LEONARDI;P. LEVTCHENKO;C. LI;E. LIEB;W. T. LIN;F. L. LINDE;B. LINDEMANN;L. LISTA;Y. LIU;W. LOHMANN;E. LONGO;W. LU;Y. S. LU;J. M. LUBBERS;K. LUBELSMEYER;C. LUCI;D. LUCKEY;L. LUDOVICI;L. LUMINARI;W. LUSTERMANN;W. G. MA;M. MACDERMOTT;M. MAITY;L. MALGERI;R. MALIK;A. MALININ;C. MANA;S. MANGLA;M. MAOLINBAY;P. MARCHESINI;A. MARIN;J. P. MARTIN;F. MARZANO;G. G. G.;K. MAZUMDAR;P. MCBRIDE;T. MCMAHON;D. MCNALLY;S. MELE;M. MERK;L. MEROLA;M. MESCHINI;W. J. METZGER;Y. MI;A. MIHUL;G. B. MILLS;Y. MIR;G. MIRABELLI;J. MNICH;M. MOLLER;V. MONACO;B. MONTELEONI;R. MORAND;S. MORGANTI;N. E. MOULAI;R. MOUNT;S. MULLER;E. NAGY;M. NAPOLITANO;F. NESSITEDALDI;H. NEWMAN;M. A. NIAZ;A. NIPPE;H. NOWAK;G. ORGANTINI;D. PANDOULAS;S. PAOLETTI;P. PAOLUCCI;G. PASCALE;G. PASSALEVA;S. PATRICELLI;T. PAUL;M. PAULUZZI;C. PAUS;F. PAUSS;Y. J. PEI;S. PENSOTTI;D. PERRETGALLIX;A. PEVSNER;D. PICCOLO;M. PIERI;J. C. PINTO;P. A. PIROUE;E. PISTOLESI;F. PLASIL;V. PLYASKIN;M. POHL;V. POJIDAEV;H. POSTEMA;N. PRODUIT;J. M. QIAN;K. N. QURESHI;R. RAGHAVAN;G. RAHALCALLOT;P. G. RANCOITA;M. RATTAGGI;G. RAVEN;P. RAZIS;K. READ;M. REDAELLI;D. REN;Z. REN;M. RESCIGNO;S. REUCROFT;A. RICKER;S. RIEMAN;B. C. RIEMERS;K. RILES;O. RIND;H. A. RIZVI;S. RO;A. ROBOHM;F. J. RODRIGUEZ;B. P. ROE;M. ROHNER;S. ROHNER;L. ROMERO;S. ROSIERLEES;R. ROSMALEN;P. ROSSELET;W. VANROSSUM;S. ROTH;A. RUBBIA;J. A. RUBIO;H. RYKACZEWSKI;J. SALICIO;J. M. SALICIO;E. SANCHEZ;G. S. SANDERS;A. SANTOCCHIA;M. E. SARAKINOS;S. SARKAR;G. SARTORELLI;M. SASSOWSKY;G. SAUVAGE;C. SCHAFER;V. SCHEGELSKY;D. SCHMITZ;P. SCHMITZ;M. SCHNEEGANS;N. SCHOLZ;H. SCHOPPER;D. J. SCHOTANUS;S. SHOTKIN;H. J. SCHREIBER;J. SHUKLA;R. SCHULTE;K. SCHULTZE;J. SCHWENKE;G. SCHWERING;C. SCIACCA;I. SCOTT;R. SEHGAL;P. G. SEILER;J. C. SENS;L. SERVOLI;I. SHEER;S. SHEVCHENKO;X. R. SHI;E. SHUMILOV;V. SHOUTKO;D. SON;A. SOPCZAK;V. SOULIMOV;C. SPARTIOTIS;T. SPICKERMANN;P. SPILLANTINI;M. STEUER;D. P. STICKLAND;F. STICOZZI;H. STONE;K. STRAUCH;K. SUDHAKAR;G. SULTANOV;L. Z. SUN;G. F. SUSINNO;H. SUTER;J. D. SWAIN;A. A. SYED;X. W. TANG;L. TAYLOR;R. TIMELLINI;S. C. C.;S. M. TING;O. TOKER;M. TONUTTI;S. C. TONWAR;J. TOTH;G. TROWITZSCH;A. TSAREGORODTSEV;T. TSIPOLITIS;C. TULLY;J. ULBRICHT;L. URBAN;U. UWER;E. VALENTE;R. T. VANDEWALLE;I. VETLITSKY;G. VIERTEL;P. VIKAS;U. VIKAS;M. VIVARGENT;H. VOGEL;H. VOGT;I. VOROBIEV;A. A. VOROBYOV;A. A. VOROBYOV;L. VUILLEUMIER;M. WADHWA;W. WALLRAFF;J. C. WANG;X. L. WANG;Y. F. WANG;Z. M. WANG;A. WEBER;J. WEBER;R. WEILL;C. WILLMOTT;F. WITTGENSTEIN;D. WRIGHT;S. X. WU;S. WYNHOFF;Z. Z. XU;B. Z. YANG;C. G. YANG;G. YANG;X. Y. YAO;C. H. YE;J. B. YE;Q. YE;S. C. YEH;J. M. YOU;N. YUNUS;M. YZERMAN;C. ZACCARDELLI;P. ZEMP;M. ZENG;Y. ZENG;D. H. ZHANG;Z. P. ZHANG;B. ZHOU;G. J. ZHOU;J. F. ZHOU;R. Y. ZHU;A. ZICHICHI;B. C. C.
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