MEASUREMENT OF THE MASS OF THE LAMBDA(B) BARYON

Authors
BUSKULIC D DEBONIS I DECAMP D GHEZ P GOY C LEES JP LUCOTTE A MINARD MN ODIER P PIETRZYK B CASADO MP CHMEISSANI M CRESPO JM DELFINO M EFTHYMIOPOULOS I FERNANDEZ E FERNANDEZBOSMAN M GARRIDO LI JUSTE A MARTINEZ M ORTEU S PACHECO A PADILLA C PASCUAL A PERLAS JA RIU I SANCHEZ F TEUBERT F COLALEO A CREANZA D DEPALMA M GELAO G GIRONE M IASELLI G MAGGI G MAGGI M MARINELLI N NUZZO S RANIERI A RASO G RUGGIERI F SELVAGGI G SILVESTRIS L TEMPESTA P ZITO G HUANG X LIN J OUYANG Q WANG T XIE Y XU R XUE S ZHANG J ZHANG L ZHAO W ALEMANY R BAZARKO AO BONVICINI G CATTANEO M COMAS P COYLE P DREVERMANN H FORTY RW FRANK M HAGELBERG R HARVEY J JANOT P JOST B KNERINGER E KNOBLOCH J LEHRAUS I MARTIN EB MATO P MINTEN A MIQUEL R MIR LM MONETA L OEST T PALLA F PATER JR PUSZTASZERI JF RANJARD F RENSING P ROLANDI L SCHLATTER D SCHMELLING M SCHNEIDER O TEJESSY W TOMALIN IR VENTURI A WACHSMUTH H WAGNER A WILDISH T AJALTOUNI Z BARRES A BOYER C FALVARD A GAY P GUICHENEY C HENRARD P JOUSSET J MICHEL B MONTEIL S MONTRET JC PALLIN D PERRET P PODLYSKI F PRORIOL J ROSSIGNOL JM FEARNLEY T HANSEN JB HANSEN JD HANSEN JR HANSEN PH NILSSON BS WAANANEN A KYRIAKIS A MARKOU C SIMOPOULOU E SIOTIS I VAYAKI A ZACHARIADOU K BLONDEL A BONNEAUD G BRIENT JC BOURDON P ROUGE A RUMPF M VALASSI A VERDERI M VIDEAU H CANDLIN DJ PARSONS MI FOCARDI E PARRINI G CORDEN M GEORGIOPOULOS C JAFFE DE ANTONELLI A BENCIVENNI G BOLOGNA G BOSSI F CAMPANA P CAPON G CASPER D CHIARELLA V FELICI G LAURELLI P MANNOCCHI G MURTAS F MURTAS GP PASSALACQUA L PEPEALTARELLI M CURTIS L DORRIS SJ HALLEY AW KNOWLES IG LYNCH JG OSHEA V RAINE C REEVES P SCARR JM SMITH K THOMPSON AS THOMSON F THORN S TURNBULL RM BECKER U GEWENIGER C GRAEFE G HANKE P HANSPER G HEPP V KLUGE EE PUTZER A RENSCH B SCHMIDT M SOMMER J STENZEL H TITTEL K WERNER S WUNSCH M ABBANEO D BEUSELINCK R BINNIE DM CAMERON W DORNAN PJ MOUTOUSSI A NASH J SEDGBEER JK STACEY AM WILLIAMS MD DISSERTORI G GIRTLER P KUHN D RUDOLPH G BETTERIDGE AP BOWDERY CK COLRAIN P CRAWFORD G FINCH AJ FOSTER F HUGHES G SLOAN T WILLIAMS MI GALLA A GREENE AM KLEINKNECHT K QUAST G RENK B ROHNE E SANDER HG VANGEMMEREN P ZEITNITZ C AUBERT JJ BENCHEIKH AM BENCHOUK C BONISSENT A BUJOSA G CALVET D CARR J DIACONU C ETIENNE F KONSTANTINIDIS N PAYRE P ROUSSEAU D TALBY M SADOUKI A THULASIDAS M TRABELSI K ALEPPO M RAGUSA F ABT I ASSMANN R BAUER C BLUM W DIETL H DYDAK F GANIS G GOTZHEIN C JAKOBS K KROHA H LUTJENS G LUTZ G MANNER W MOSER HG RICHTER R ROSADOSCHLOSSER A SCHAEL S SETTLES R SEYWERD H STDENIS R WIEDENMANN W WOLF G BOUCROT J CALLOT O CORDIER A DAVIER M DUFLOT L GRIVAZ JF HEUSSE P JACQUET M KIM DW LEDIBERDER F LEFRANCOIS J LUTZ AM NIKOLIC I PARK HJ PARK IC SCHUNE MH SIMION S VEILLET JJ VIDEAU I AZZURRI P BAGLIESI G BATIGNANI G BETTARINI S BOZZI C CALDERINI G CARPINELLI M CIOCCI MA CIULLI V DELLORSO R FANTECHI R FERRANTE I FOA L FORTI F GIASSI A GIORGI MA GREGORIO A LIGABUE F LUSIANI A MARROCCHESI PS MESSINEO A RIZZO G SANGUINETTI G SCIABA A SPAGNOLO P STEINBERGER J TENCHINI R TONELLI G VANNINI C VERDINI PG WALSH J BLAIR GA BRYANT LM CERUTTI F CHAMBERS JT GAO Y GREEN MG MEDCALF T PERRODO P STRONG JA VONWIMMERSPERGTOELLER JH BOTTERILL DR CLIFFT RW EDGECOCK TR HAYWOOD S MALEY P NORTON PR THOMPSON JC WRIGHT AE BLOCHDEVAUX B COLAS P EMERY S KOZANECKI W LANCON E LEMAIRE MC LOCCI E MARX B PEREZ P RANDER J RENARDY JF ROUSSARIE A SCHULLER JP SCHWINDLING J TRABELSI A VALLAGE B BLACK SN DANN JH JOHNSON RP KIM HY LITKE AM MCNEIL MA TAYLOR G BOOTH CN BOSWELL R BREW CAJ CARTWRIGHT S COMBLEY F KOKSAL A LETHO M NEWTON WM REEVE J THOMSPON LF BOHRER A BRANDT S BUSCHER V COWAN G GRUPEN C LUTTERS G MINGUETRODRIGUEZ J RIVERA F SARAIVA P SMOLIK L STEPHAN F APOLLONIO M BOSISIO L DELLAMARINA R GIANNINI G GOBBO B MUSOLINO G ROTHBERG J WASSERBAECH S ARMSTRONG SR BELLANTONI L ELMER P FENG Z FERGUSON DPS GAO YS GONZALEZ S GRAHL J GREENING TC HARTON JL HAYES OJ HU H MCNAMARA PA NACHTMAN JM OREJUDOS W PAN YB SAADI Y SCHMITT M SCOTT IJ SHARMA V WALSH AM WU SL WU X YAMARTINO JM ZHENG M ZOBERNIG G
Citation
D. Buskulic et al., MEASUREMENT OF THE MASS OF THE LAMBDA(B) BARYON, Physics letters. Section B, 380(3-4), 1996, pp. 442-452
Citations number
18
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
380
Issue
3-4
Year of publication
1996
Pages
442 - 452
Database
ISI
SICI code
0370-2693(1996)380:3-4<442:MOTMOT>2.0.ZU;2-I
Abstract
In a data sample of four million hadronic Z decays collected with the ALEPH detector at LEP, four Lambda(b) baryon candidates are exclusivel y reconstructed in the Lambda(b) --> Lambda(c)(+) pi(-) channel, with the Lambda(c)(+) decaying into pK(-) pi(+), <p(K)over bar (0)> or Lamb da pi(+) pi(+) pi(-). The probability of the observed signal to be due to a background fluctuation is estimated to be 4.2 x 10(-4). The mass of the Lambda(b) is measured to be 5614 +/- 21 (stat.) +/- 4 (syst.) MeV/c(2).