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ENG

SEARCH FOR A 4TH GENERATION CHARGE -1 3-QUARK VIA FLAVOR-CHANGING NEUTRAL-CURRENT DECAY/

Authors

ABACHI S ABBOTT B ABOLINS M ACHARYA BS ADAM I ADAMS DL ADAMS M AHN S AIHARA H ALVES GA AMIDI E AMOS N ANDERSON EW ASTUR R BAARMAND MM BADEN A BALAMURALI V BALDERSTON J BALDIN B BANERJEE S BANTLY J BARTLETT JF BAZIZI K BELYAEV A BERI SB BERTRAM I BEZZUBOV VA BHAT PC BHATNAGAR V BHATTACHARJEE M BISWAS N BLAZEY G BLESSING S BLOOM P BOEHNLEIN A BOJKO NI BORCHERDING F BORDERS J BOSWELL C BRANDT A BROCK R BROSS A BUCHHOLZ D BURTOVOI VS BUTLER JM CARVALHO W CASEY D CASTILLAVALDEZ H CHAKRABORTY D CHANG SM CHEKULAEV SV CHEN LP CHEN W CHOI S CHOPRA S CHOUDHARY BC CHRISTENSON JH CHUNG M CLAES D CLARK AR COBAU WG COCHRAN J COOPER WE CRETSINGER C CULLENVIDAL D CUMMINGS MAC CUTTS D DAHL OI DE K DELSIGNORE K DEMARTEAU M DENISOV D DENISOV SP DIEHL HT DIESBURG M DILORETO G DRAPER P DRINKARD J DUCROS Y DUDKO LV DUGAD SR EDMUNDS D ELLISON J ELVIRA VD ENGELMANN R ENO S EPPLEY G ERMOLOV P EROSHIN OV EVDOKIMOV VN FAHLAND T FATYGA M FATYGA MK FEATHERLY J FEHER S FEIN D FERBEL T FINOCCHIARO G FISK HE FISYAK Y FLATTUM E FORDEN GE FORTNER M FRAME KC FUESS S GALLAS E GALYAEV AN GARTUNG P GELD TL GENIK RJ GENSER K GERBER CE GIBBARD B GLENN S GOBBI B GOFORTH M GOLDSCHMIDT A GOMEZ B GOMEZ G GONCHAROV PI SOLIS JLG GORDON H GOSS LT GOUSSIOU A GRAF N GRANNIS PD GREEN DR GREEN J GREENLEE H GRIM G GROSSMAN N GRUDBERG P GRUNENDAHL S GUGLIELMO G GUIDA JA GUIDA JM GUPTA A GURZHIEV SN GUTIERREZ P GUTNIKOV YE HADLEY NJ HAGGERTY H HAGOPIAN S HAGOPIAN V HAHN KS HALL RE HANSEN S HAUPTMAN JM HEDIN D HEINSON AP HEINTZ U HERNANDEZMONTOYA R HEURING T HIROSKY R HOBBS JD HOENEISEN B HOFTUN JS HSIEH F HU T HU T HUEHN T ITO AS JAMES E JAQUES J JERGER SA JESIK R JIANG JZY JOFFEMINOR T JOHNS K JOHNSON M JONCKHEERE A JONES M JOSTLEIN H JUN SY JUNG CK KAHN S KALBFLEISCH G KANG JS KEHOE R KELLY ML KIM CL KIM SK KLATCHKO A KLIMA B KLOPFENSTEIN C KLYUKHIN VI KOCHETKOV VI KOHLI JM KOLTICK D KOSTRITSKIY AV KOTCHER J KOTWAL AV KOURLAS J KOZELOV AV KOZLOVSKI EA KRANE J KRISHNASWAMY MR KRZYWDZINSKI S KUNORI S LAMI S LAN H LANDER R LANDRY F LANDSBERG G LAUER B LEFLAT A LI H LI J LIDEMARTEAU QZ LIMA JGR LINCOLN D LINN SL LINNEMANN J LIPTON R LIU Q LIU YC LOBKOWICZ F LOKEN SC LOKOS S LUEKING L LYON AL MACIEL AKA MADARAS RJ MADDEN R MAGANAMENDOZA L MANI S MAO HS MARKELOFF R MARKOSKY L MARSHALL T MARTIN MI MAY B MAYOROV AA MCCARTHY R MCDONALD J MCKIBBEN T MCKINLEY J MCMAHON T MELANSON HL MERKIN M MERRITT KW MIETTINEN H MINCER A DEMIRANDA JM MISHRA CS MOKHOV N MONDAL NK MONTGOMERY HE MOONEY P DAMOTTA H MURPHY C NANG F NARAIN M NARASIMHAM VS NARAYANAN A NEAL HA NEGRET JP NEMETHY P NESIC D NICOLA M NORMAN D OESCH L OGURI V OLTMAN E OSHIMA N OWEN D PADLEY P PANG M PARA A PARK YM PARTRIDGE R PARUA N PATERNO M PERKINS J PETERS M PIEKARZ H PISCHALNIKOV Y PODSTAVKOV VM POPE BG PROSPER HB PROTOPOPESCU S PUSELJIC D QIAN J QUINTAS PZ RAJA R RAJAGOPALAN S RAMIREZ O RAPIDIS PA RASMUSSEN L REUCROFT S RIJSSENBEEK M ROCKWELL T ROE NA RUBINOV P RUCHTI R RUTHERFOORD J SANCHEZHERNANDEZ A SANTORO A SAWYER L SCHAMBERGER RD SCHELLMAN H SCULLI J SHABALINA E SHAFFER C SHANKAR HC SHIVPURI RK SHUPE M SINGH H SINGH JB SINGH P SIROTENKO V SMART W SMITH A SMITH RP SNIHUR R SNOW GR SNOW J SNYDER S SOLOMON J SOOD PM SOSEBEE M SOTNIKOVA N SOUZA M SPADAFORA AL STEPHENS RW STEVENSON ML STEWART D STOIANOVA DA STOKER D STRAUSS M STREETS K STROVINK M SZNAJDER A TAMBURELLO P TARAZI J TARTAGLIA M THOMAS TLT THOMPSON J TRIPPE TG TUTS PM VARELAS N VARNES EW VITITOE D VOLKOV AA VOROBIEV AP WAHL HD WANG G WARCHOL J WATTS G WAYNE M WEERTS H WHITE A WHITE JT WIGHTMAN JA WILLIS S WIMPENNY SJ WIRJAWAN JVD WOMERSLEY J WON E WOOD DR XU H YAMADA R YAMIN P YANAGISAWA C YANG J YASUDA T YEPES P YOSHIKAWA C YOUSSEF S YU J YU Y ZHU Q ZHU ZH ZIEMINSKA D ZIEMINSKI A ZVEREV EG ZYLBERSTEJN A

Citation

S. Abachi et al., SEARCH FOR A 4TH GENERATION CHARGE -1 3-QUARK VIA FLAVOR-CHANGING NEUTRAL-CURRENT DECAY/, Physical review letters, 78(20), 1997, pp. 3818-3823

Citations number

Categorie Soggetti

Physics

Journal title

Physical review letters → ACNP

ISSN journal

00319007

Volume

Issue

Year of publication

1997

Pages

3818 - 3823

Database

ISI

SICI code

0031-9007(1997)78:20<3818:SFA4GC>2.0.ZU;2-I

Abstract

We report on a search for pair production of a fourth generation charg e -1/3 quark (b') in p (n) over bar collisions at root s = 1.8 TeV by the DO experiment at the Fermilab Tevatron using an integrated luminos ity of 93 pb(-1). Both b' quarks are assumed to decay via flavor chang ing neutral currents (FCNC). The search uses the signatures gamma + 3 jets mu-tag and 2 gamma + 2 jets. We see no significant excess of even ts over the expected background. We place an upper limit on the produc tion cross section times branching fraction that is well below theoret ical expectations for a bl decaying exclusively via FCNC for b' masses up to m(Z) + m(b).