A MEASUREMENT OF A(FB)(B) IN LIFETIME TAGGED HEAVY FLAVOR Z DECAYS

Buskulic, D; Casper, D; Debonis, I; Decamp, D; Ghez, P; Goy, C; Lees, Jp; Minard, Mn; Odier, P; Petrzyk, B; Ariztizabal, F; Chmeissani, M; Crespo, Jm; Efthymiopoulos, I; Fernandez, E; Fernandezbosman, M; Gaitan, V; Garrido, Li; Martinez, M; Mattison, T; Orteu, S; Pacheco, A; Padillo, C; Palla, F; Pascual, A; Perlas, Ja; Teubert, F; 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; Comas, P; Coyle, P; Drevermann,; Engelhardt, A; Forty, Rw; Ganis, G; Gay, C; Girone, M; Hagelberg, R; Harvey, 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; Perrodo, P; Pusztaszeri, Jf; Ranjard, F; Rolandi, Luigi; Rothberg, J; Saich, M; Schlatter, D; Schmelling, M; 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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; Beddall, A; Booth, C; Cartwright, S; Combley, F; Dawson, I; Koksal, A; 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; Bossisio, L; Dellamarina, R; Giannini, G; Gobbo, B; Pitis, L; Ragusa, F; Bellantoni, L; 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; Yamartino, Jm; Zheng, M; Zobernig, G; Denis Richard/C 8997 2012 Ferrante Isidoro/F 1017 2012, RI ANTONELLI ANTONELLA/C 6238 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 S. t.

doi:10.1016/0370-2693(94)91564-4

A new measurement of the forward-backward asymmetry in Z --> bbBAR decays is presented. Hadrons from b decays are tagged using their long lifetimes. The b quark charge and direction are reconstructed with a hemisphere charge algorithm. The asymmetry and reconstructed b hemisphere charge are measured in the 69 pb-1 of data collected by ALEPH during 1991, 1992 and 1993. They are used to extract sin2theta(w)eff, which is determined to be 0.2315 +/- 0.0016 (stat.) +/- 0.0009 (syst.), corresponding to an A(FB)b of 0.00992 +/- 0.0084 (stat.) +/- 0.0046 (stat.).

Titolo:	A MEASUREMENT OF A(FB)(B) IN LIFETIME TAGGED HEAVY FLAVOR Z DECAYS
Autori:	BUSKULIC D CASPER D DEBONIS I DECAMP D GHEZ P GOY C LEES JP MINARD MN ODIER P PETRZYK B ARIZTIZABAL F CHMEISSANI M CRESPO JM EFTHYMIOPOULOS I FERNANDEZ E FERNANDEZBOSMAN M GAITAN V GARRIDO LI MARTINEZ M MATTISON T ORTEU S PACHECO A PADILLO C PALLA F PASCUAL A PERLAS JA TEUBERT F 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 COMAS P COYLE P DREVERMANN ENGELHARDT A FORTY RW GANIS G GAY C GIRONE M HAGELBERG R HARVEY 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 PERRODO P PUSZTASZERI JF RANJARD F ROLANDI, LUIGI ROTHBERG J SAICH M SCHLATTER D SCHMELLING M TEJESSY W TOMALIN IR VEENHOF R VENTURI A 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 PRORJOL 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 BLONDEL A BONNEAUD G BRIENT JC BOURON P PASSALACQUA L ROUGE A RUMPF M TANAKA R VALASSI A VERDERI M VIDEAU H CANDLIN DJ PARSONS MI VEITCH E FOCARDI E 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 OBRAUN 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 MONETA L 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 CALVERT D CARR J 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 KROHA H LAUBER J LUTJENS G LUTZ G MANNER W MOSER HG RCHTER R SCHAEL S SCHRODER J SCHWARZ AS SETTLES R SEYWERE H STIERLIN U STIEGLER U STDENIS R WOLF G ALEMANY R BOUCROT J CALLOT O CORDIER A COURAULT F DAVIER M DUFLOT L GRIVAZ JF HEUSSE P JANOT P JACQUET M KIMTR DW LEDIBERDER F LEFRANCOIS J LUTZ AM MUSOLINO G NIKOLIC I PARK HJ PARK IC SIMION S SCHUENE 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, FRANCO LUSIANI, Alberto MARROCCHESI PS MARTIN EB MESSINEO A RIZZO G SANGUINETTI G SPAGNOLO P STEINBERGER J TENCHINI R TONELLI G TRIGGIANI G VANNINI C 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 BEDDALL A BOOTH C CARTWRIGHT S COMBLEY F DAWSON I KOKSAL A 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 BOSSISIO L DELLAMARINA R GIANNINI G GOBBO B PITIS L RAGUSA F BELLANTONI L 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 YAMARTINO JM ZHENG M ZOBERNIG G RI ANTONELLI ANTONELLA/C 6238 2011 Passalacqua Luca/F 5127 2011 Murtas Fabrizio/B 5729 2012 S.t. Denis Richard/C 8997 2012 Ferrante Isidoro/F 1017 2012 mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	1994
Rivista:	PHYSICS LETTERS. SECTION B
Abstract:	A new measurement of the forward-backward asymmetry in Z --> bbBAR decays is presented. Hadrons from b decays are tagged using their long lifetimes. The b quark charge and direction are reconstructed with a hemisphere charge algorithm. The asymmetry and reconstructed b hemisphere charge are measured in the 69 pb-1 of data collected by ALEPH during 1991, 1992 and 1993. They are used to extract sin2theta(w)eff, which is determined to be 0.2315 +/- 0.0016 (stat.) +/- 0.0009 (syst.), corresponding to an A(FB)b of 0.00992 +/- 0.0084 (stat.) +/- 0.0046 (stat.).
Handle:	http://hdl.handle.net/11384/7256
Appare nelle tipologie:	1.1 Articolo in rivista

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