MEASUREMENT OF THE BETA-MESON AND B-QUARK CROSS-SECTIONS AT ROOT-S = 1.8 TEV USING THE EXCLUSIVE DECAY BETA+/--]J/PSI-KAPPA+/-

ABE F; AMIDEI D; APOLLINARI G; ATAC M; AUCHINCLOSS P; BADEN AR; BACCHETTA N; BAILEY MW; BAMBERGER A; DEBARBARO P; BARNETT BA; BARBAROGALTIERI A; BARNES VE; BAUMANN T; BEDESCHI F; BEHRENDS S; BELFORTE S; BELLETTINI G; BELLINGER J; BENJAMIN D; BENSINGER J; BERETVAS A; BERGE JP; BERTOLUCCI S; BHADRA S; BINKLEY M; BISELLO D; BLAIR R; BLOCKER C; BODEK A; BOLOGNESI V; BOOTH AW; BOSWELL C; BRANDENBURG G; BROWN D; BUCKLEYGEER E; BUDD HS; BUSETTO G; BYONWAGNER A; BYRUM KL; CAMPAGNARI C; CAMPBELL M; CANER A; CAREY R; CARITHERS W; CARLSMITH D; CARROLL JT; CASHMORE R; CASTRO A; CERVELLI F; CHADWICK K; CHIARELLI G; CHINOWSKY W; CIHANGIR S; CLARK AG; COBAL M; CONNOR D; CONTRERAS M; COOPER J; CORDELLI M; CRANE D; CURATOLO M; DAY C; DEJONGH F; DELLAGNELLO S; DELL'ORSO, MAURO; DEMORTIER L; DENBY B; DERWENT PF; DEVLIN T; DIBITONTO D; DICKSON M; DRUCKER RB; EINSWEILER K; ELIAS JE; ELY R; ENO S; ERREDE S; ESPOSITO B; ETCHEGOYEN A; FLAUGHER B; FOSTER GW; FRANKLIN M; FREEMAN J; FRISCH H; FUESS T; FUKUI Y; GARFINKEL AF; GAUTHIER A; GEER S; GERDES DW; GIANNETTI P; GIOKARIS N; GIROMINI P; GLADNEY L; GOLD M; GOULIANOS K; GRASSMANN H; GRIECO G; GROSSOPILCHER C; HABER C; HAHN SR; HANDLER R; HARA K; HARRAL B; HARRIS RM; HAUSER J; HAWK C; HESSING T; HOLLEBEEK R; HOLLOWAY L; HU P; HUBBARD B; HUFFMAN BT; HUGHES R; HURST P; HUTH J; HYLEN J; INCAGLI M; INO T; ISO H; JENSEN H; JESSOP CP; JOHNSON RP; JOSHI U; KADEL RW; KAMON T; KANDA S; KARDELIS DA; KARLINER I; KEARNS E; KEEBLE L; KEPHART R; KESTEN P; KEUP RM; KEUTELIAN H; KIM D; KIM S; KIRSCH L; KONDO K; KONIGSBERG J; KOVACS E; KUHLMANN SE; KUNS E; LAASANEN AT; LAMOUREUX JI; LEONE S; LEWIS J; LI W; LIMON P; LISS TM; LOCKYER N; LORETI M; LOW EH; LUCHINI CB; LUKENS P; MAAS P; MAESHIMA K; MANGANO M; MARRINER JP; MARIOTTI M; MARKELOFF R; MARKOSKY LA; MATTINGLY R; MCINTYRE P; MENZIONE A; MEYER T; MIKAMO S; MILLER M; MIMASHI T; MISCETTI S; MISHINA M; MIYASHITA S; MORITA Y; MOULDING S; MUELLER J; MUKHERJEE A; NAKAE LF; NAKANO I; NELSON C; NEWMANHOLMES C; NG JST; NINOMIYA M; NODULMAN L; OGAWA S; PAOLETTI R; PAPADIMITRIOU V; PARA A; PARE E; PARK S; PATRICK J; PAULETTA G; PESCARA L; PHILLIPS TJ; PTOHOS F; PLUNKETT R; PONDROM L; PROUDFOOT J; PUNZI, GIOVANNI; QUARRIE D; RAGAN K; REDLINGER G; RHOADES J; ROACH M; RIMONDI F; RISTORI L; RODRIGO T; ROHALY T; ROODMAN A; SAKUMOTO WK; SANSONI A; SARD RD; SAVOYNAVARRO A; SCARPINE V; SCHLABACH P; SCHMIDT EE; SCHNEIDER O; SCHUB MH; SCHWITTERS R; SCRIBANO A; SEGLER S; SEIYA Y; SHAPIRO M; SHAW NM; SHEAFF M; SHOCHET M; SIEGRIST J; SINERVO P; SKARHA J; SLIWA K; SMITH DA; SNIDER FD; SONG L; SPAHN M; SPHICAS P; STDENIS R; STEFANINI A; SULLIVAN G; SWARTZ RL; TAKANO M; TARTARELLI F; TAKIKAWA K; TAREM S; THERIOT D; TIMKO M; TIPTON P; TKACZYK S; TOLLESTRUP A; TONNISON J; TRISCHUK W; TURINI N; TSAY Y; UKEGAWA F; UNDERWOOD D; VEJCIK S; VIDAL R; WAGNER RG; WAGNER RL; WAINER N; WALSH J; WATTS T; WEBB R; WENDT C; WENZEL H; WESTER WC; WESTHUSING T; WHITE SN; WICKLUND AB; WILLIAMS HH; WINER BL; WYSS J; YAGIL A; YASUOKA K; YEH GP; YOH J; YOKOYAMA M; YUN JC; ZANETTI A; ZETTI F; ZUCCHELLI S.

doi:10.1103/PhysRevLett.68.3403

This Letter reports the full reconstruction of B mesons through the decay chain B +/- --> J/psi-K +/-, J/psi --> mu+-mu-, using data obtained at thc Collider Detector at Fermilab in ppBAR collisions at square-root s = 1.8 TeV. This exclusive sample, the first observed at a hadron collider, is then used to measure the B-meson cross section, from which we extract the b-quark cross section. We obtain sigma = 2.8 +/- 0.9(stat) +/- 1.1 (syst) mu-b for B- mesons with P(T) > 9.0 GeV/c and rapidity \y\ < 1.0. We obtain sigma = 6.1 +/- 1.9(stat) +/- 2.4(syst) mu-b for b quarks with transverse momentum P(T) > 11.5 GeV/c and rapidity \y\ < 1.0.