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Titolo:
Z-PRODUCTION CROSS-SECTIONS AND LEPTON PAIR FORWARD-BACKWARD ASYMMETRIES
Autore:
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 L; 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; BLUCHER E; 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; MOFFEIT K; 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 G; 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 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; SCHMIDT M; STENZEL H; 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 J; RENK B; SANDER HG; SCHMIDT H; WALTHER SM; WANKE R; WOLF B; BENCHEIKH AM; BENCHOUK C; BONISSENT A; CALVET D; CARR J; COUYLE 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; HEUSSEP; 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 D; VALLAGE B; JOHNSON RP; LITKE AM; TAYLOR G; WEAR J; BABBAGE W; BEDDALL E; BOOTH CN; CARTWRIGHT S; COMBLEY F; DAWSON I; RANKIN C; THOMPSON LF; BOHRER A; BRANDT S; COWAN G; FEIGL E; GRUPEN C; LUTTERS G; MINGUETRODRIGUEZ J; RIVERA F; SARAIVA P; SCHAFER U; SMOLIK 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;
Indirizzi:
CNRS,PHYS PARTICULES F-74019 ANNECY LE VIEUX FRANCE UNIV AUTONOMA BARCELONA,INST FIS ALTES ENERGIES E-08193 BARCELONA BARCELO SPAIN INFN,DIPARTIMENTO FIS,SEZ BARI I-70126 BARI ITALY CHINESE ACAD SCI,INST HIGH ENERGY PHYS BEIJING PEOPLES R CHINA CERN,EUROPEAN LAB PARTICLE PHYS CH-1211 GENEVA 23 SWITZERLAND UNIV CLERMONT FERRAND,PHYS CORPUSCULAIRE LAB,CNRS F-63177 CLERMONT FERRAND FRANCE NIELS BOHR INST DK-2100 COPENHAGEN DENMARK DEMOCRITOS NUCL RES CTR ATHENS GREECE ECOLE POLYTECH,PHYS NUCL HAUTES ENERGIES LAB,CNRS F-91128 PALAISEAU FRANCE UNIV EDINBURGH,DEPT PHYS EDINBURGH EH9 3JZ MIDLOTHIAN SCOTLAND UNIV FLORENCE,DIPARTIMENTO FIS,INFN,SEZ FIRENZE I-50125 FLORENCE ITALY FLORIDA STATE UNIV,SUPERCOMP COMPUTAT RES INST TALLAHASSEE FL 32306 INFN,LAB NAZL I-00044 FRASCATI ITALY UNIV GLASGOW,DEPT PHYS & ASTRON GLASGOW G12 8QQ SCOTLAND UNIV HEIDELBERG,INST HOCHENERGIEPHYS D-69120 HEIDELBERG GERMANY UNIV LONDON IMPERIAL COLL SCI TECHNOL & MED,DEPT PHYS LONDON SW7 2BZ ENGLAND INNSBRUCK UNIV,INST EXPTL PHYS A-6020 INNSBRUCK AUSTRIA UNIV LANCASTER,DEPT PHYS LANCASTER LA1 4YB ENGLAND UNIV MAINZ,INST PHYS D-55099 MAINZ GERMANY FAC SCI LUMINY,CTR PHYS PARTICULES,CNRS F-13288 MARSEILLE FRANCE MAX PLANCK INST PHYS & ASTROPHYS,WERNER HEISENBERG INST D-80805 MUNICH GERMANY UNIV WASHINGTON SEATTLE WA 98195 UNIV TURIN,IST FIS GEN I-10124 TURIN ITALY CNR,INST COSMO GEOFIS TURIN ITALY UNIV SASSARI,IST MATEMAT & FIS I-07100 SASSARI ITALY UNIV BARCELONA,DEPT ESTRUCT & CONSTITUENTS MAT E-08208 BARCELONA SPAIN UNIV PARIS 11,ACCELERATEUR LINEAIRE LAB,CNRS F-91405 ORSAY FRANCE UNIV PISA,DIPARTIMENTO FIS,INFN,SEZ PISA I-56010 PISA ITALY UNIV LONDON,ROYAL HOLLOWAY & BEDFORD NEW COLL,DEPT PHYS SURREY TW20 0EX ENGLAND RUTHERFORD APPLETON LAB,DEPT PARTICLE PHYS DIDCOT OX11 0QX OXON ENGLAND CTR ETUD SACLAY,DAPNIA,SERV PHYS PARTICULES F-91191 GIF SUR YVETTE FRANCE UNIV PISA,SCUOLA NORMALE SUPER I-56010 PISA ITALY UNIV SHEFFIELD,DEPT PHYS SHEFFIELD S3 7RH S YORKSHIRE ENGLAND UNIV SIEGEN,FACHBEREICH PHYS D-57068 SIEGEN GERMANY UNIV TRIESTE,DIPARTIMENTO FIS I-34127 TRIESTE ITALY INFN,SEZ TRIESTE I-34127 TRIESTE ITALY UNIV WISCONSIN,DEPT PHYS MADISON WI 53706
Titolo Testata:
Zeitschrift fur Physik. C, Particles and fields
fascicolo: 4, volume: 62, anno: 1994,
pagine: 539 - 550
SICI:
0170-9739(1994)62:4<539:ZCALPF>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
SEMILEPTONIC NEUTRINO SCATTERING; ELECTROWEAK MIXING ANGLE; GRAND UNIFIED THEORIES; HADRONIC Z-DECAYS; BHABHA SCATTERING; PRECISE DETERMINATION; RADIATIVE-CORRECTIONS; PHOTON CORRECTIONS; MASS CORRECTIONS; ALEPH DETECTOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
59
Recensione:
Indirizzi per estratti:
Citazione:
D. Buskulic et al., "Z-PRODUCTION CROSS-SECTIONS AND LEPTON PAIR FORWARD-BACKWARD ASYMMETRIES", Zeitschrift fur Physik. C, Particles and fields, 62(4), 1994, pp. 539-550

Abstract

Precise values of the Z resonance cross sections and lepton pair forward-backward asymmetries are measured from a sample of 1.3 million Z decays into hadrons and charged leptons taken with the ALEPH detector at LEP. A silicon-tungsten luminosity calorimeter was installed in ALEPH in 1992, permitting the determination of the absolute luminosity to a systematic precision of 0.15% (experimental) and 0.25% (theoretical). This is combined with a better understanding of the hadronic event selection and an improved tau pair selection. Including the ALEPH results of the past three years one obtains sigma(h)0 = (41.60 +/- 0.16) nb, and R(l) = 20.69 +/- 0.09. The corresponding number of light neutrino species is N(v) = 2.983 +/- 0.034. The lepton pair forward-backward'asymmetry is used to derive the ratio of vector to axial-vector couplings of leptons: g(V)2(M(Z)2)/g(A)2(M(Z)2) = 0.0058 +/- 0.0011. An application of these results to constrain one model with extra Z bosons is presented.

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Documento generato il 02/12/20 alle ore 18:07:25