Forward-Backward Asymmetry in Top-Quark Production in p(p)over-bar Collisions at root s=1.96 TeV

We present measurements of the forward-backward charge asymmetry in top pair production using 1: 9 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV recorded with the Collider Detector at Fermilab II. Correcting for acceptance and measurement dilutions we obtain parton-level asymmetries of A(FB)(p (p) over bar) = 0.17 +/- 0.08 in the p (p) over bar frame and A(FB)(t (t) over bar) = 0.24 +/- 0.14 in the t (t) over bar frame. The values are consistent with the standard model expectation and disfavor exotic production mechanisms with significant negative values.

Titolo:	Forward-Backward Asymmetry in Top-Quark Production in p(p)over-bar Collisions at root s=1.96 TeV
Autori:	AALTONEN T ADELMAN J AKIMOTO T ALBROW MG GONZALEZ BA AMERIO S AMIDEI D ANASTASSOV A ANNOVI A ANTOS J APOLLINARI G APRESYAN A ARISAWA T ARTIKOV A ASHMANSKAS W ATTAL A AURISANO A AZFAR F AZZURRI P BADGETT W BARBARO GALTIERI A BARNES VE BARNETT BA BARTSCH V BAUER G BEAUCHEMIN PH BEDESCHI F BEDNAR P BEECHER D BEHARI S BELLETTINI G BELLINGER J BENJAMIN D BERETVAS A BERINGER J BHATTI A BINKLEY M BISELLO, DARIO BIZJAK I BLAIR RE BLOCKER C BLUMENFELD B BOCCI A BODEK A BOISVERT V BOLLA G BORTOLETTO D BOUDREAU J BOVEIA A BRAU B BRIDGEMAN A BRIGLIADORI L BROMBERG C BRUBAKER E BUDAGOV J BUDD HS BUDD S BURKETT K BUSETTO, GIOVANNI BUSSEY P BUZATU A BYRUM KL CABRERA S CALANCHA C CAMPANELLI M CAMPBELL M CANELLI F CANEPA A CARLSMITH D CAROSI R CARRILLO S CARRON S CASAL B CASARSA M CASTRO A CATASTINI P CAUZ D CAVALIERE V CAVALLI SFORZA M CERRI A CERRITO L CHANG SH CHEN YC CHERTOK M CHIARELLI G CHLACHIDZE G CHLEBANA F CHO K CHOKHELI D CHOU JP CHOUDALAKIS G CHUANG SH CHUNG K CHUNG WH CHUNG YS CHWALEK T CIOBANU CI CIOCCI MA CLARK A CLARK D COMPOSTELLA G CONVERY ME CONWAY J COPIC K CORDELLI M CORTIANA G COX DJ CRESCIOLI F ALMENAR CC CUEVAS J CULBERTSON R CULLY JC DAGENHART D DATTA M DAVIES T BARBARO P CECCO S DEISHER A LORENZO G DELL'ORSO M DELUCA C DEMORTIER L DENG J DENINNO M DERWENT PF GIOVANNI GP DIONISI C RUZZA B DITTMANN JR D'ONOFRIO M DONATI S DONG P DONINI J DORIGO T DUBE S EFRON J ELAGIN A ERBACHER R ERREDE D ERREDE S EUSEBI R FANG HC FARRINGTON S FEDORKO WT FEILD RG FEINDT M FERNANDEZ JP FERRAZZA C FIELD R FLANAGAN G FORREST R FRANKLIN M FREEMAN JC FURIC I GALLINARO M GALYARDT J GARBERSON F GARCIA JE GARFINKEL AF GENSER K GERBERICH H GERDES D GESSLER A GIAGU S GIAKOUMOPOULOU V GIANNETTI P GIBSON K GIMMELL JL GINSBURG CM GIOKARIS N GIORDANI M GIROMINI P GIUNTA M GIURGIU G GLAGOLEV V GLENZINSKI D GOLD M GOLDSCHMIDT N GOLOSSANOV A GOMEZ G GOMEZ CEBALLOS G GONCHAROV M GONZALEZ O GORELOV I GOSHAW AT GOULIANOS K GRESELE A GRINSTEIN S GROSSO PILCHER C GROUP RC GRUNDLER U DA COSTA JG GUNAY UNALAN Z HABER C HAHN K HAHN SR HALKIADAKIS E HAN BY HAN JY HANDLER R HAPPACHER F HARA K HARE D HARE M HARPER S HARR RF HARRIS RM HARTZ M HATAKEYAMA K HAUSER J HAYS C HECK M HEIJBOER A HEINEMANN B HEINRICH J HENDERSON C HERNDON M HEUSER J HEWAMANAGE S HIDAS D HILL CS HIRSCHBUEHL D HOCKER A HOU S HOULDEN M HSU SC HUFFMAN BT HUGHES RE HUSEMANN U HUSTON J INCANDELA J INTROZZI G IORI M IVANOV A JAMES E JAYATILAKA B JEON EJ JHA MK JINDARIANI S JOHNSON W JONES M JOO KK JUN SY JUNG JE JUNK TR KAMON T KAR D KARCHIN PE KATO Y KEPHART R KEUNG J KHOTILOVICH V KILMINSTER B KIM DH KIM HS KIM JE KIM MJ KIM SB KIM SH KIM YK KIMURA N KIRSCH L KLIMENKO S KNUTESON B KO BR KOAY SA KONDO K KONG DJ KONIGSBERG J KORYTOV A KOTWAL AV KREPS M KROLL J KROP D KRUMNACK N KRUSE M KRUTELYOV V KUBO T KUHR T KULKARNI NP KURATA M KUSAKABE Y KWANG S LAASANEN AT LAMI S LAMMEL S LANCASTER M LANDER RL LANNON K LATH A LATINO G LAZZIZZERA I LECOMPTE T LEE E LEE SW LEONE S LEWIS JD LIN CS LINACRE J LINDGREN M LIPELES E LISTER A LITVINTSEV DO LIU C LIU T LOCKYER NS LOGINOV A LORETI M LOVAS L LU RS LUCCHESI, DONATELLA LUECK J LUCI C LUJAN P LUKENS P LUNGU G LYONS L LYS J LYSAK R LYTKEN E MACK P MACQUEEN D MADRAK R MAESHIMA K MAKHOUL K MAKI T MAKSIMOVIC P MALDE S MALIK S MANCA G MANOUSAKIS KATSIKAKIS A MARGAROLI F MARINO C MARINO CP MARTIN A MARTIN V MARTINEZ M MARTINEZ BALLARIN R MARUYAMA T MASTRANDREA P MASUBUCHI T MATTSON ME MAZZANTI P MCFARLAND KS MCINTYRE P MCNULTY R MEHTA A MEHTALA P MENZIONE A MERKEL P MESROPIAN C MIAO T MILADINOVIC N MILLER R MILLS C MILNIK M MITRA A MITSELMAKHER G MIYAKE H MOGGI N MOON CS MOORE R MORELLO MJ MORLOK J FERNANDEZ PM MULMENSTADT J MUKHERJEE A MULLER T MUMFORD R MURAT P MUSSINI M NACHTMAN J NAGAI Y NAGANO A NAGANOMA J NAKAMURA K NAKANO I NAPIER A NECULA V NEU C NEUBAUER MS NIELSEN J NODULMAN L NORMAN M NORNIELLA O NURSE E OAKES L OH SH OH YD OKSUZIAN I OKUSAWA T ORAVA R OSTERBERG K GRISO SP PAGLIARONE C PALENCIA E PAPADIMITRIOU V PAPAIKONOMOU A PARAMONOV AA PARKS B PASHAPOUR S PATRICK J PAULETTA G PAULINI M PAUS C PEIFFER T PELLETT DE PENZO A PHILLIPS TJ PIACENTINO G PIANORI E PINERA L PITTS K PLAGER C PONDROM L POUKHOV O POUNDER N PRAKOSHYN F PRONKO A PROUDFOOT J PTOHOS F PUESCHEL E PUNZI G PURSLEY J RADEMACKER J RAHAMAN A RAMAKRISHNAN V RANJAN N REDONDO I REISERT B REKOVIC V RENTON P RESCIGNO M RICHTER S RIMONDI F RISTORI L ROBSON A RODRIGO T RODRIGUEZ T ROGERS E ROLLI S ROSER R ROSSI M ROSSIN, ROBERTO ROY P RUIZ A RUSS J RUSU V SAARIKKO H SAFONOV A SAKUMOTO WK SALTO O SANTI L SARKAR S SARTORI L SATO K SAVOY NAVARRO A SCHEIDLE T SCHLABACH P SCHMIDT A SCHMIDT EE SCHMIDT MA SCHMIDT MP SCHMITT M SCHWARZ T SCODELLARO L SCOTT AL SCRIBANO A SCURI F SEDOV A SEIDEL S SEIYA Y SEMENOV A SEXTON KENNEDY L SFYRLA A SHALHOUT SZ SHEARS T SHEPARD PF SHERMAN D SHIMOJIMA M SHIRAISHI S SHOCHET M SHON Y SHREYBER I SIDOTI A SINERVO P SISAKYAN A SLAUGHTER AJ SLAUNWHITE J SLIWA K SMITH JR SNIDER FD SNIHUR R SOHA A SOMALWAR S SORIN V SPALDING J SPREITZER T SQUILLACIOTI P STANITZKI M DENIS RS STELZER B STELZER CHILTON O STENTZ D STROLOGAS J STUART D SUH JS SUKHANOV A SUSLOV I SUZUKI T TAFFARD A TAKASHIMA R TAKEUCHI Y TANAKA R TECCHIO M TENG PK TERASHI K THOM J THOMPSON AS THOMPSON GA THOMSON E TIPTON P TIWARI V TKACZYK S TOBACK D TOKAR S TOLLEFSON K TOMURA T TONELLI D TORRE S TORRETTA D TOTARO P TOURNEUR S TU Y TURINI N UKEGAWA F VALLECORSA S REMORTEL N VARGANOV A VATAGA E VAZQUEZ F VELEV G VELLIDIS C VESZPREMI V VIDAL M VIDAL R VILA I VILAR R VINE T VOGEL M VOLOBOUEV I VOLPI G WURTHWEIN F WAGNER P WAGNER RG WAGNER RL WAGNER KUHR J WAGNER W WAKISAKA T WALLNY R WANG SM WARBURTON A WATERS D WEINBERGER M WEINELT J WESTER WC WHITEHOUSE B WHITESON D WICKLUND AB WICKLUND E WILLIAMS G WILLIAMS HH WILSON P WINER BL WITTICH P WOLBERS S WOLFE C WRIGHT T WU X WYNNE SM YAGIL A YAMAMOTO K YAMAOKA J YANG UK YANG YC YAO WM YEH GP YOH J YORITA K YOSHIDA T YU GB YU I YU SS YUN JC ZANELLO L ZANETTI A ZAW I ZHANG X ZHENG Y ZUCCHELLI S. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2008
Rivista:	PHYSICAL REVIEW LETTERS
Abstract:	We present measurements of the forward-backward charge asymmetry in top pair production using 1: 9 fb(-1) of p (p) over bar collisions at root s = 1.96 TeV recorded with the Collider Detector at Fermilab II. Correcting for acceptance and measurement dilutions we obtain parton-level asymmetries of A(FB)(p (p) over bar) = 0.17 +/- 0.08 in the p (p) over bar frame and A(FB)(t (t) over bar) = 0.24 +/- 0.14 in the t (t) over bar frame. The values are consistent with the standard model expectation and disfavor exotic production mechanisms with significant negative values.
Handle:	http://hdl.handle.net/11577/2445875
Appare nelle tipologie:	01.01 - Articolo in rivista

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