A MEASUREMENT OF THE SEMILEPTONIC BRANCHING RATIO BR(B-BARYON-]PL(V)OVER-BAR-X) AND A STUDY OF INCLUSIVE PI(+ -), K-+/-, (P,(P)OVER-BAR) PRODUCTION IN Z-DECAYS/

Authors
BARATE R BUSKULIC D DECAMP D GHEZ P GOY C LEES JP LUCOTTE A MINARD MN NIEF JY PIETRZYK B BOIX G CASADO MP CHMEISSANI M CRESPO JM DELFINO M FERNANDEZ E FERNANDEZBOSMAN M GARRIDO L GRAUGES E JUSTE A MARTINEZ M MERINO G MIQUEL R MIR LM PARK IC PASCUAL A PERLAS JA RIU I SANCHEZ F COLALEO A CREANZA D DEPALMA M GELAE G IASELLI G MAGGI G MAGGI R MARINELLI N NUZZO S RANIERI A RASO G RUGGIERI F SELVAGGI G SILVESTRIS L TEMPESTA P TRICOMI A ZITO G HUANG X LIN J OUYANG Q WANG T XIE Y XU R XUE S ZHANG J ZHANG L ZHAO W ABBANEO D ALEMANY R BECKER U BRIGHTTHOMAS P CASPER D CATTANEO M CERUTTI F CIULLI V DISSERTORI G DREVERMANN H FORTY RW FRANK M HAGELBERG R HANSEN JB HARVEY J JANOT P JOST B LEHRAUS I MATO P MINTEN A MONETA L PACHECO A PUSZTASZERI JF RANJARD F ROLANDI L ROUSSEAU D SCHLATTER D SCHMITT M SCHNEIDER O TEJESSY W TEUBERT F TOMALIN IR WACHSMUTH H WAGNER A AJALTOUNI Z BADAUD F CHAZELLE G DESCHAMPS O FALVARD A FERDI C GAY P GUICHENEY C HENRARD P JOUSSET J MICHEL B MONTEIL S MONTRET JC PALLIN D PERRET P PODLYSKI F PRORIOL J ROSNET P FEARNLEY T HANSEN JD HANSEN JR HANSEN PH NILSSON BS RENSCH B WAANANEN A DASKALAKIS G KYRIAKIS A MARKOU C SIMOPOULOU E SIOTIS I VAYAKI A BLONDEL A BONNEAUD G BRIENT JC BOURDON P ROUGE A RUMPF M VALASSI A VERDERI M VIDEAU H CANDLIN DJ PARSONS MI BOCCALI T FOCARDI E PARRINI G ZACHARIADOU K CORDEN M GEORGIOPOULOS C JAFFE DE ANTONELLI A BENCIVENNI G BOLOGNA G BOSSI F CAMPANA P CAPON G CHIARELLA V FELICI G LAURELLI P MANNOCCHI G MURTAS F MURTAS GP PASSALACQUA L PEPEALTARELLI M CURTIS L DORRIS SJ HALLEY AW LYNCH JG NEGUS P OSHEA V RAINE C SCARR JM SMITH K TEIXEIRADIAS P THOMPSON AS THOMSON E THOMSON F BUCHMULLER O DHAMOTHARAN S GEWENIGER C GRAEFE G HANKE P HANSPER G HEPP V KLUGE EE PUTZER A SOMMER J TITTEL K WERNER S WUNSCH M BEUSELINCK R BINNIE DM CAMERON W DORNAN PJ GIRONE M GOODSIR S MARTIN EB MOUTOUSSI A NASH J SEDGBEER JK SPAGNOLO P WILLIAMS MD GHETE VM GIRTLER P KNERINGER E KUHN D RUDOLPH G BETTERIDGE AP BOWDERY CK BUCK PG COLRAIN P CRAWFORD G FINCH AJ FOSTER F HUGHES G JONES RWL WILLIAMS MI GIEHL I GREENE AM HOFFMANN C JAKOBS K KLEINKNECHT K QUAST G RENK B ROHNE E SANDER HG VANGEMMEREN P ZEITNITZ C AUBERT JJ BENCHOUK C BONISSENT A BUJOSA G CARR J COYLE P DIACONU C ETIENNE F LEROY O MOTSCH F PAYRE P TALBY M SADOUKI A THULASIDAS N TRABELSI K ALEPPO M ANTONELLI M RAGUSA F BERLICH R BLUM W BUSCHER V DIETL H GANIS G GOTZHEIN C KROHA H LUTJENS G LUTZ G MANNERT C MANNER W MOSER HG RICHTER R ROSADOSCHLOSSER A SCHAEL S SETTLES R SEYWERD H STENZEL H WIEDENMANN W WOLF G BOUCROT J CALLOT O CHEN S CHOI Y CORDIER A DAVIER H DUFLOT L GRIVAZ JF HEUSSE P HOCKER A JACHOLKOWSKA A KIM DW LEDIBERDER F LEFRANCOIS J LUTZ AM NIKOLIC I SCHUNE MH TOURNEFIER E VEILLET JJ VIDEAU I ZERWAS D AZZURRI P BAGLIESI G BATIGNANI G BETTARINI S BOZZI C CALDERINI G CARPINELLI M CIOCCI MA DELLORSO R FANTECHI R FERRANTE I FOA L FORTI F GIASSI A GIORGI MA GREGORIO A LIGABUE F LUSIANI A MARROCCHESI PS MESSINEO A PALLA F RIZZO G SANGUINETTI G SCIABA A STEINBERGER J TENCHINI R TONELLI G VANNINI C VENTURI A VERDINI PG BLAIR GA BRYANT LM CHAMBERS JT GREEN MG MEDCALF T PERRODO P STRONG JA VONWIMMERSPERGTOELLER JH BOTTERILL DR CLIFFT RW EDGECOCK TR HAYWOOD S NORTON PR THOMPSON JC WRIGHT AE BLOCHDEVAUX B COLAS P EMERY S KOZANECKI W LANCON E LEMAIRE MC LOCCI E PEREZ P RANDER J RENARDY JF ROUSSARIE A SCHULLER JP SCHWINDLING J TRABELSI A VALLAGE B BLACK SN DANN JH JOHNSON RP KIM HY KONSTANTINIDIS N LITKE AM MCNEIL MA TAYLOR G BOOTH CN BREW CAJ CARTWRIGHT S COMBLEY F KELLY MS LEHTO M REEVE J THOMPSON LF AFFHOLDERBACH K BOHRER A BRANDT S COWAN G GRUPEN C SARAIVA P SMOLIK L STEPHAN F APOLLONIO M BOSISIO L DELLAMARINA R GIANNINI G GOBBO B MUSOLINO G ROTHBERG J WASSERBAECH S ARMSTRONG SR CHARLES E ELMER P FERGUSON DPS GAO Y GONZALEZ S GREENING TC HAYES OJ HU H JIN S MCNAMARA PA NACHTMAN JM NIELSEN J OREJUDOS W PAN YB SAADI Y SCOTT IJ WALSH J WU SL WU X YAMARTINO JM ZOBERNIG G
Citation
R. Barate et al., A MEASUREMENT OF THE SEMILEPTONIC BRANCHING RATIO BR(B-BARYON-]PL(V)OVER-BAR-X) AND A STUDY OF INCLUSIVE PI(+ -), K-+/-, (P,(P)OVER-BAR) PRODUCTION IN Z-DECAYS/, EUROPEAN PHYSICAL JOURNAL C-PARTICLES AND FIELDS, 5(2), 1998, pp. 205-227
Citations number
30
Categorie Soggetti
Physics, Particles & Fields
Journal title
EUROPEAN PHYSICAL JOURNAL C-PARTICLES AND FIELDS → ACNP
ISSN journal
14346044
Volume
5
Issue
2
Year of publication
1998
Pages
205 - 227
Database
ISI
SICI code
1434-6044(1998)5:2<205:AMOTSB>2.0.ZU;2-C
Abstract
Inclusive pi(+/-), K+/- and (p,(p)over-bar) production is investigated using data recorded by the ALEPH detector between 1992 and 1994. The momentum spectra and multiplicities are measured separately in Z --> b (b)over-bar, Z --> c(c)over-bar and Z --> u(u)over-bar, d(d)over-bar; s(s)over-bar decays. The number of protons found in b-hadron decays is used to estimate the fraction of b-baryons in b events to be (10.2 +/ - 0.7 +/- 2.7)% assuming BR(b-baryon --> pX) = (58 +/- 6)%. From an ad ditional study of proton-lepton correlations in b events, the branchin g ratio BR(b-baryon --> pl(v)over-bar-X) = (4.63 +/- 0.72 +/- 0.98)% i s obtained. The ratio BR(b-baryon --> pl(nu)over-bar-X)/BR(b-baryon -- > pX) is found to be 0.080 +/- 0.012 +/- 0.014.