A SEARCH FOR EXCITED FERMIONS IN E(+)P COLLISIONS AT HERA

Authors
BREITWEG J DERRICK M KRAKAUER D MAGILL S MIKUNAS D MUSGRAVE B REPOND J STANEK R TALAGA RL YOSHIDA R ZHANG H MATTINGLY MCK ANSELMO F ANTONIOLI P BARI G BASILE M BELLAGAMBA L BOSCHERINI D BRUNI A BRUNI G ROMEO GC CASTELLINI G CIFARELLI L CINDOLO F CONTIN A CORRADI M DEPASQUALE S GIALAS I GIUSTI P IACOBUCCI G LAURENTI G LEVI G MARGOTTI A MASSAM T NANIA R PALMONARI F PESCI A POLINI A RICCI F SARTORELLI G GARCIA YZ ZICHICHI A AMELUNG C BORNHEIM A BROCK I COBOKEN K CRITTENDEN J DEFFNER R ECKERT M FELD L GROTHE M HARTMANN H HEINLOTH K HEINZ L HILGER E JAKOB HP KATZ UF KERGER R PAUL E PFEIFFER M REMBSER C STAMM J WEDEMEYER R WIEBER H BAILEY DS CAMPBELLROBSON S COTTINGHAM WN FOSTER B HALLWILTON R HAYES ME HEATH GP HEATH HF PICCIONI D ROFF DG TAPPER RJ ARNEODO M AYAD R CAPUA M GARFAGNINI A IANNOTTI L SCHIOPPA M SUSINNO G KIM JY LEE JH LIM IT PAC MY CALDWELL A CARTIGLIA N JING Z LIU W MELLADO B PARSONS JA RITZ S SAMPSON S SCIULLI F STRAUB PB ZHU Q BORZEMSKI P CHWASTOWSKI J ESKREYS A JAKUBOWSKI Z PRZYBYCIEN MB ZACHARA M ZAWIEJSKI L ADAMCZYK L BEDNAREK B JELEN K KISIELEWSKA D KOWALSKI T PRZYBYCIEN M RULIKOWSKAZAREBSKA E SUSZYCKI L ZAJAC J DULINSKI Z KOTANSKI A ABBIENDI G BAUERDICK LAT BEHRENS U BEIER H BIENLEIN JK CASES G DEPPE O DESLER K DREWS G FRICKE U GILKINSON DJ GLASMAN C GOTTLICHER P GROSSEKNETTER J HAAS T HAIN W HASELL D JOHNSON KF KASEMANN E KOCH W KOTZ U KOWALSKI H LABS J LINDEMANN L LOHR B LOWE M MANCZAK O MILEWSCI J MONTEIRO T NG JST NOTZ D OHRENBERG K PARKS IH PELLEGRINO A PELUCCHI F PIOTRZKOWSKI K ROCO M ROHDE M ROLDAN J RYAN JJ SAVIN AA SCHNEEKLOTH U SELONKE F SURROW B TASSI E VOSS T WESTPHAL D WOLF G WOLLMER U YOUNGMAN C ZARNECKI AF ZEUNER W BUROW BD GRABOSCH HJ MEYER A SCHLENSTEDT S BARBAGLI G GALLO E PELFER P MACCARRONE G VOTANO L BAMBERGER A EISENHARDT S MARKUN P TREFZGER T WOLFLE S BOHNET I BROOK NH BUSSEY PJ DOYLE AT SAXON DH SINCLAIR LE STRICKLAND E UTLEY ML WAUGH R WILSON AS BOHNET I GENDNER N HOLM U MEYERLARSEN A SALEHI H WICK K GLADILIN K HORSTMANN D KCIRA D KLANNER R LOHRMANN E POELZ G SCHOTT W ZETSCHE F BACON TC BUTTERWORTH I COLE JE HARRIS VL HOWELL G HUNG BHY LAMBERTI L LONG KR MILLER DB PAVEL N PRINIAS A SEDGBEER JK SIDERIS D WHITFIELD AF MALLIK U WANG SM WU JT CLOTH P FILGES D FLECK JI ISHII T KUZE M NAKAO M TOKUSHUKU K YAMADA S YAMAZAKI Y AN SH LEE SB NAM SW PARK HS PARK SK BARREIRO F FERNANDEZ JP GARCIA G GRACIANI R HERNANDEZ JM HERVAS L LABARGA L MARTINEZ M DELPESO J PUGA J TERRON J DETROCONIZ JF CORRIVEAU F HANNA DS HARTMANN J HUNG LW LIM JN MURRAY WN OCHS A RIVELINE M STAIRS DG STLAURENT M ULLMANN R TSURUGAI T BASHKIROV V DOLGOSHEIN BA STIFUTKIN A BASHINDZHAGYAN GL ERMOLOV PF GOLUBKOV YA KHEIN LA KOROTKOVA NA KORZHAVINA IA KUZMIN VA LUKINA OY PROSKURYAKOV AS SHCHEGLOVA LM SHUMILIN AV SOLOMIN AN ZOTKIN SA BOKEL C BOTJE M BRUMMER N CHLEBANA F ENGELEN J KOOIJMAN P KRUSE A VANSIGHEM A TIECKE H VERKERKE W VOSSEBELD J VREESWIJK M WIGGERS L DEWOLF E ACOSTA D BYLSMA B DURKIN LS GILMORE J GINSBURG CM KIM CL LING TY NYLANDER P ROMANOWSKI TA BLAIKLEY HE CASHMORE RJ COOPERSARKAR AM DEVENISH RCE EDMONDS JK HARNEW N LANCASTER M MCFALL JD NATH C NOYES VA QUADT A RUSKE O TICKNER JR UIJTERWAAL H WALCZAK R WATERS DS BERTOLIN A BRUGNERA R CARLIN R DALCORSO F DOSSELLI U LIMENTANI S MORANDIN M POSOCCO M STANCO L STROILI R VOCI C BULMAHN J FEILD RG OH BY OKRASINSKI JR WHITMORE JJ IGA Y DAGOSTINI G MARINI G NIGRO A RASO M HART JC MCCUBBIN NA SHAH TP EPPERSON D HEUSCH C RAHN JT SADROZINSKI HFW SEIDEN A WILLIAMS DC SCHWARZER O WALENTA AH ABRAMOWICZ H BRISKIN G DAGAN S DOEKER T KANANOV S LEVY A ABE T FUSAYASU T INUZUKA M NAGANO K SUZUKI I UMEMORI K YAMASHITA T HAMATSU R HIROSE T HOMMA K KITAMURA S MATSUSHITA T YAMAUCHI K CIRIO R COSTA M FERRERO MI MASELLI S MONACO V PERONI C PETRUCCI MC SACCHI R SOLANO A STAIANO A DARDO M BAILEY DC BRKIC M FAGERSTROEM CP HARTNER GF JOO KK LEVMAN GM MARTIN JF ORR RS POLENZ S SAMPSON CR SIMMONS D TEUSCHER RJ BUTTERWORTH JM CATTERALL CD JONES TW KAZIEWICZ PB LANE JB SAUNDERS RL SHULMAN J SUTTON MR LU B MO LW CIBOROWSKI J GRZELAK G KASPRZAK M MUCHOROWSKI K NOWAK RJ PAWLAK JM PAWLAK R TYMIENIECKA T WROBLEWSKI AK ZAKRZEWSKI JA ADAMUS M COLDEWEY C EISENBERG Y HOCHMAN D KARSHON U REVEL D BADGETT WF CHAPIN D CROSS R DASU S FOUDAS C LOVELESS RJ MATTINGLY S REEDER D SMITH WH VAICIULIS A WODARCZYK M BHADRA S FRISKEN WR KHAKZAD M SCHMIDKE WB
Citation
J. Breitweg et al., A SEARCH FOR EXCITED FERMIONS IN E(+)P COLLISIONS AT HERA, Zeitschrift fur Physik. C, Particles and fields, 76(4), 1997, pp. 631-646
Citations number
46
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
76
Issue
4
Year of publication
1997
Pages
631 - 646
Database
ISI
SICI code
0170-9739(1997)76:4<631:ASFEFI>2.0.ZU;2-B
Abstract
Using the ZEUS detector at HERA, we have searched for heavy excited st ates of electrons, neutrinos, and quarks in e(+)p collisions at a cent er-of-mass energy of 300 GeV, With an integrated luminosity of 9.4 pb( -1), no evidence was found for electroweak production and decay of suc h states, Limits on the production cross section times branching ratio and on the characteristic couplings, f/Lambda, are derived for masses up to 250 GeV. For the particular choice f/Lambda = 1/M-f, we exclud e at the 95% confidence level excited electrons with mass between 30 a nd 200 GeV, excited electron neutrinos with mass between 40 and 96 GeV , and quarks excited electroweakly with mass between 40 and 169 GeV.