HEAVY-QUARK TAGGING WITH LEPTONS IN THE ALEPH DETECTOR

Authors
BUSKULIC D CASPER D DEBONIS I DECAMP D GHEZ P GOY C LEES JP MINARD MN ODIER P PIETRZYK B ARIZTIZABAL F COMAS P CRESPO JM EFTHYMIOPOULOS I FERNANDEZ E FERNANDEZBOSMAN M GAITAN V GARRIDO LI MARTINEZ M MATTISON T ORTEU S PACHECO A PADILLA C PASCUAL A CREANZA D DEPALMA M FARILLA A IASELLI G MAGGI G MARINELLI N NATALI S NUZZO S RANIERI A RASO G ROMANO F RUGGIERI F SELVAGGI G SILVESTRIS L TEMPESTA P ZITO G CHAI Y HUANG D HUANG X LIN J WANG T XIE Y XU D XU R ZHANG J ZHANG L ZHAO W BONVICINI G BOUDREAU J DREVERMANN H FORTY RW GANIS G GAY C GIRONE M HAGELBERG R HARVEY J HILGART J JACOBSEN R JOST B KNOBLOCH J LEHRAUS I MAGGI M MARKOU C MATO P MEINHARD H MINTEN A MIQUEL R PALAZZI P PATER JR PERLAS JA PERRODO P PUSZTASZERI JF RANJARD F ROLANDI L ROTHBERG J RUAN T SAICH M SCHLATTER D SCHMELLING M SEFKOW F TEJESSY W TOMALIN IR VEENHOF R WACHSMUTH H WASSERBAECH S WIEDENMANN W WILDISH T WITZELING W WOTSCHACK J AJALTOUNI Z BARDADINOTWINOWSKA M BARRES A BOYER C FALVARD A GAY P GUICHENEY C HENRARD P JOUSSET J MICHEL B MONTRET JC PALLIN D PERRET P PODLYSKI F PRORIOL J SAADI F FEARNLEY T HANSEN JB HANSEN JD HANSEN JR HANSEN PH JOHNSON SD MOLLERUD R NILSSON BS KYRIAKIS A SIMOPOULOU E SIOTIS I VAYAKI A ZACHARIADOU K BADIER J BLONDEL A BONNEAUD G BRIENT JC BOURDON P FOUQUE G PASSALACQUA L ROUGE A RUMPF M TANAKA R VERDERI M VIDEAU H CANDLIN DJ PARSONS MI VEITCH E FOCARDI E MONETA L PARRINI G CORDEN M DELFINO M GEORGIOPOULOS C JAFFE DE LEVINTHAL D ANTONELLI A BENCIVENNI G BOLOGNA G BOSSI F CAMPANA P CAPON G CERUTTI F CHIARELLA V FELICI G LAURELLI P MANNOCCHI G MURTAS F MURTAS GP PEPEALTARELLI M SALOMONE S COLRAIN P TENHAVE I KNOWLES IG LYNCH JG MAITLAND W MORTON WT RAINE C REEVES P SCARR JM SMITH K SMITH MG THOMPSON AS THORN S TURNBULL RM BECKER U BRAUN O GEWENIGER C HANKE P HEPP V KLUGE EE PUTZER A RENSCH B STENZEL MSH TITTEL K WUNSCH M BEUSELINCK R BINNIE DM CAMERON W CATTANEO M COLLING DJ DORNAN PJ HASSARD JF KONSTANTINIDIS N MOUTOUSSI A NASH J PAYNE DG SANMARTIN G SEDGBEER JK WRIGHT AG GIRTLER P KUHN D RUDOLPH G VOGL R BOWDERY CK BRODBECK TJ FINCH AJ FOSTER F HUGHES G JACKSON D KEEMER NR NUTTALL M PATEL A SLOAN T SNOW SW WHELAN EP GALLA A GREENE AM KLEINKNECHT K RAAB L RENK B SANDER HG SCHMIDT H WALTHER SM WANKE R WOLF B BENCHEIKH AM BENCHOUK C BONISSENT A CALVET D CARR J COYLE P DIACONU C ETIENNE F NICOD D PAYRE P ROOS L ROUSSEAU D SCHWEMLING P TALBY M ADLUNG S ASSMANN R BAUER C BLUM W BROWN D CATTANEO P DEHNING B DIETL H DYDAK F FRANK M HALLEY AW JAKOBS K LAUBER J LUTJENS G LUTZ G MANNER W MOSER HG RICHTER R SCHRODER J SCHWARZ AS SETTLES R SEYWERD H STIERLIN U STIEGLER U STDENIS R WOLF G ALEMANY R BOUCROT J CALLOT O CORDIER A DAVIER M DUFLOT L GRIVAZ JF HEUSSE P JANOT P KIM DW LEDIBERDER F LEFRANCOIS J LUTZ AM MUSOLINO G SCHUNE MH VEILLET JJ VIDEAU I ABBANEO D BAGLIESI G BATIGNANI G BOTTIGLI U BOZZI C CALDERINI G CARPINELLI M CIOCCI MA CIULLI V DELLORSO R FERRANTE I FIDECARO F FOA L FORTI F GIASSI A GIORGI MA GREGORIO A LIGABUE F LUSIANI A MARROCCHESI PS MARTIN EB MESSINEO A PALLA F RIZZO G SANGUINETTI G SPAGNOLO P STEINBERGER J TENCHINI R TONELLI G TRIGGIANI G VALASSI A VANNINI C VENTURI A VERDINI PG WALSH J BETTERIDGE AP GAO Y GREEN MG JOHNSON DL MARCH PV MEDCALF T MIR LM QUAZI IS STRONG JA BERTIN V BOTTERILL DR CLIFFT RW EDGECOCK TR HAYWOOD S EDWARDS M NORTON PR THOMPSON JC BLOCHDEVAUX B COLAS P DUARTE H EMERY S KOZANECKI W LANCON E LEMAIRE MC LOCCI E MARX B PEREZ P RANDER J RENARDY JF ROSOWSKY A ROUSSARIE A SCHULLER JP SCHWINDLING J MOHAND DS VALLAGE B JOHNSON RP LITKE AM TAYLOR G WEAR J BABBAGE W BOOTH CN BUTTAR C CARTWRIGHT S COMBLEY F DAWSON I THOMPSON LF BARBERIO E BOHRER A BRANDT S COWAN G GRUPEN C LUTTERS G RIVERA F SCHAFER U SMOLIK L BOSISIO L DELLAMARINA R GIANNINI G GOBBO B PITIS L RAGUSA F BELLANTONI L CHEN W CONWAY JS FENG Z FERGUSON DPS GAO YS GRAHL J HARTON JL HAYES OJ HU H NACHTMAN JM PAN YB SAADI Y SCHMITT M SCOTT I SHARMA V TURK JD WALSH AM WEBER FV WU SL WU X ZHENG M YAMARTINO JM ZOBERNIG G
Citation
D. Buskulic et al., HEAVY-QUARK TAGGING WITH LEPTONS IN THE ALEPH DETECTOR, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 346(3), 1994, pp. 461-475
Citations number
14
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
346
Issue
3
Year of publication
1994
Pages
461 - 475
Database
ISI
SICI code
0168-9002(1994)346:3<461:HTWLIT>2.0.ZU;2-1
Abstract
Semileptonic decays of heavy quarks yield prompt leptons which can be used to identify events resulting from the decays of the Z into ccBAR and bbBAR pairs. The procedures adopted to obtain clean samples of inc lusive leptons with the ALEPH detector are described. Electron identif ication makes use of ionization measurements in the tracking system of ALEPH and the shape of showers in the electromagnetic calorimeter. Mu ons are identified using the tracking capabilities of the hadron calor imeter, together with the muon chamber information. Distinguishing the sources of prompt lepton production requires the determination of the lepton's transverse momentum with respect to the parent hadron's flig ht direction. As the latter is not directly measurable, the results of an algorithm are presented which uses the information produced by the ALEPH detector to achieve the most effective axis from which the tran sverse momentum should be measured.