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Titolo:
OBSERVATIONS OF PI-B CHARGE-FLAVOR CORRELATIONS AND RESONANT B-PI ANDBK PRODUCTION
Autore:
AKERS R; ALEXANDER G; ALLISON J; AMETEWEE K; ANDERSON KJ; ARCELLI S; ASAI S; ASTBURY A; AXEN D; AZUELOS G; BALL AH; BARBERIO E; BARLOW RJ; BARTOLDUS R; BATLEY JR; BEAUDOIN G; BECK A; BECK GA; BEESTON C; BEHNKE T; BELL KW; BELLA G; BENTVELSEN S; BERLICH P; BETHKE S; BIEBEL O; BLOODWORTH IJ; BOCK P; BOSCH HM; BOUTEMEUR M; BRAIBANT S; BRIGHTTHOMAS P; BROWN RM; BUIJS A; BURCKHART HJ; BURGIN R; BURGARD C; CAPDEVIELLE N; CAPILUPPI P; CARNEGIE RK; CARTER AA; CARTER JR; CHANG CY; CHARLESWORTH C; CHARLTON DG; CHU SL; CLARKE PEL; CLAYTON JC; CLOWES SG; COHEN I; CONBOY JE; CUFFIANI M; DADO S; DALLAPICOLLA C; DALLAVALLE GM; DARLING C; DEJONG S; DELPOZO LA; DENG H; DITTMAR M; DIXIT MS; SILVA EDC; DUBOSCQ JE; DUCHOVNI E; DUCKECK G; DUERDOTH IP; DUNWOODY UC; ELCOMBE PA; ESTABROOKS PG; ETZION E; EVANS HG; FABBRI F; FABBRO B; FANTI M; FATH P; FIERRO M; FINCKEKEELER M; FISCHER HM; FISCHER P; FOLMAN R; FONG DG; FOUCHER M; FUKUI H; FURTJES A; GAGNON P; GAIDOT A; GARY JW; GASCON J; GEDDES NI; GEICHGIMBEL C; GENSLER SW; GENTIT FX; GERALIS T; GIACOMELLI G; GIACOMELLI P; GIACOMELLI R; GIBSON V; GIBSON WR; GILLIES JD; GOLDBERG J; GINGRICH DM; GOODRICK MJ; GORN W; GRANDI C; GROSS E; HAGEMANN J; HANSON GG; HANSROUL M; HARGROVE CK; HART PA; HAUSCHILD M; HAWKES CM; HEFLIN E; HEMINGWAY RJ; HERTEN G; HEUER RD; HILL JC; HILLIER SJ; HILSE T; HOBSON PR; HOCHMAN D; HOCKER A; HOMER RJ; HONMA AK; HOWARD R; HUGHESJONES RE; IGOKEMENES P; IMRIE DC; JAWAHERY A; JEFFREYS PW; JEREMIE H; JIMACK M; JONES M; JONES RWL; JOVANOVIC P; JUI C; KARLEN D; KANZAKI J; KAWAGOE K; KAWAMOTO T; KEELER RK; KELLOGG RG; KENNEDY BW; KING B; KING J; KIRK J; KLUTH S; KOBAYASHI T; KOBEL M; KOETKE DS; KOKOTT TP; KOMAMIYA S; KOWALEWSKI R; KRESS T; KRIEGER P; VONKROGH J; KYBERD P; LAFFERTY GD; LAFOUX H; LAHMANN R; LAI WP; LAUBER J; LAYTER JG; LEBLANC P; LEDU P; LEE AM; LEFEBVRE E; LELLOUCH D; LEROY C; LETTS J; LEVINSON L; LI Z; LIU F; LLOYD SL; LOEBINGER FK; LONG GD; LORAZO B; LOSTY MJ; LOU XC; LUDWIG J; LUIG A; MANNELLI M; MARCELLINI S; MARKUS C; MARTIN AJ; MARTIN JP; MASHIMO T; MATTHEWS W; MATTIG P; MAUR U; MCKENNA J; MCMAHON TJ; MCNAB AI; MEIJERS F; MERRITT FS; MES H; MICHELINI A; MIDDLETON RP; MIKENBERG G; MILLER DJ; MIR R; MOHR W; MONTANARI A; MORI T; MORII M; MULLER U; NELLEN B; NIJJHAR B; ONEALE SW; OAKHAM FG; ODORICI F; OGREN HO; ORAM CJ; OREGLIA MJ; ORITO S; PANSART JP; PATRICK GN; PEARCE MJ; PHILLIPS PD; PILCHER JE; PINFOLD J; PITMAN D; PLANE DE; POFFENBERGER P; POLI B; POSTHAUS A; PRITCHARD TW; PRZYSIEZNIAK H; REDMOND MW; REES DL; RIGBY D; RISON M; ROBINS SA; ROBINSON D; RODNING N; RONEY JM; ROS E; ROSSI AM; ROSVICK M; ROUTENBURG P; ROZEN Y; RUNGE K; RUNOLFSSON O; RUST DR; SASAKI M; SBARRA C; SCHAILE AD; SCHAILE O; SCHARF F; SCHARFFHANSEN P; SCHENK P; SCHMITT B; SCHRODER M; SCHULZCOULON HC; SCHUTZ P; SCHULZ M; SCHWICK C; SCHWIENING J; SCOTT WG; SETTLES M; SHEARS TG; SHEN BC; SHEPHERDTHEMISTOCLEOUS CH; SHERWOOD P; SIROLI GP; SKILLMAN A; SKUJA A; SMITH AM; SMITH TJ; SNOW GA; SOBIE R; SOLDNERREMBOLD S; SPRINGER RW; SPROSTON M; STAHL A; STARKS M; STEGMANN C; STEPHENS K; STEUERER J; STOCKHAUSEN B; STROM D; SZYMANSKI P; TAFIROUT R; TAKEDA H; TAKESHITA T; TARAS P; TAREM S; TECCHIO M; TEIXEIRADIAS P; TESCH N; THOMSON MA; TOUSIGNANT O; TOWERS S; TSCHEULIN M; TSUKAMOTO T; TURCOT A; TURNERWATSON MF; UTZAT P; VANKOOTEN R; VASSEUR G; VIKAS P; VINCTER M; WAGNER A; WAGNER DL; WARD CP; WARD DR; WARD JJ; WATKINS PM; WATSON AT; WATSON NK; WEBER P; WELLS PS; WERMES N; WILKENS B; WILSON GW; WILSON JA; WINTERER VH; WLODEK T; WOLF G; WOTTON S; WYATT TR; YEAMAN A; YEKUTIELI G; YURKO M; ZACEK V; ZEUNER W; ZORN GT;
Indirizzi:
UNIV BIRMINGHAM,SCH PHYS & SPACE RES BIRMINGHAM B15 2TT W MIDLANDS ENGLAND UNIV BOLOGNA,DIPARTIMENTO FIS I-40126 BOLOGNA ITALY INFN I-40126 BOLOGNA ITALY UNIV BONN,INST PHYS D-53115 BONN GERMANY UNIV CALIF RIVERSIDE,DEPT PHYS RIVERSIDE CA 92521 UNIV CAMBRIDGE,CAVENDISH LAB CAMBRIDGE CB3 0HE ENGLAND CARLETON UNIV,DEPT PHYS OTTAWA ON K1S 5B6 CANADA CARLETON UNIV,CTR RES PARTICLE PHYS OTTAWA ON K1S 5B6 CANADA CERN,EUROPEAN ORG PARTICLE PHYS CH-1211 GENEVA 23 SWITZERLAND UNIV CHICAGO,DEPT PHYS CHICAGO IL 60637 UNIV CHICAGO,ENRICO FERMI INST CHICAGO IL 60637 ALBERT LUDWIGS UNIV,FAK PHYS D-79104 FREIBURG GERMANY UNIV HEIDELBERG,INST PHYS D-69120 HEIDELBERG GERMANY INDIANA UNIV,DEPT PHYS BLOOMINGTON IN 47405 UNIV LONDON,QUEEN MARY & WESTFIELD COLL LONDON E1 4NS ENGLAND UNIV LONDON UNIV COLL LONDON WC1E 6BT ENGLAND UNIV MANCHESTER,SCHUSTER LAB,DEPT PHYS MANCHESTER M13 9PL LANCS ENGLAND UNIV MARYLAND,DEPT PHYS COLLEGE PK MD 20742 UNIV MONTREAL,PHYS NUCL LAB MONTREAL PQ H3C 3J7 CANADA UNIV OREGON,DEPT PHYS EUGENE OR 97403 RUTHERFORD APPLETON LAB DIDCOT OX11 0QX OXON ENGLAND CENS,CEA,DAPNIA,SPP F-91191 GIF SUR YVETTE FRANCE TECHNION ISRAEL INST TECHNOL,DEPT PHYS IL-32000 HAIFA ISRAEL TEL AVIV UNIV,DEPT PHYS & ASTRON IL-69978 TEL AVIV ISRAEL UNIV TOKYO,INT CTR ELEMENTARY PARTICLE PHYS TOKYO 113 JAPAN UNIV TOKYO,DEPT PHYS TOKYO 113 JAPAN KOBE UNIV KOBE 657 JAPAN BRUNEL UNIV UXBRIDGE UB8 3PH MIDDX ENGLAND WEIZMANN INST SCI,DEPT PARTICLE PHYS IL-76100 REHOVOT ISRAEL UNIV HAMBURG,DESY,INST EXPTL PHYS 2 D-22607 HAMBURG GERMANY UNIV VICTORIA,DEPT PHYS VICTORIA BC V8W 3P6 CANADA UNIV BRITISH COLUMBIA,DEPT PHYS VANCOUVER BC V6T 1W5 CANADA UNIV ALBERTA,DEPT PHYS EDMONTON AB T6G 2J1 CANADA DUKE UNIV,DEPT PHYS DURHAM NC 27708 TH AACHEN,INST PHYS 3 D-52056 AACHEN GERMANY
Titolo Testata:
Zeitschrift fur Physik. C, Particles and fields
fascicolo: 1-2, volume: 66, anno: 1995,
pagine: 19 - 29
SICI:
0170-9739(1995)66:1-2<19:OOPCCA>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
E+E ANNIHILATION; CHARMED MESONS; DETECTOR; LEP;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
R. Akers et al., "OBSERVATIONS OF PI-B CHARGE-FLAVOR CORRELATIONS AND RESONANT B-PI ANDBK PRODUCTION", Zeitschrift fur Physik. C, Particles and fields, 66(1-2), 1995, pp. 19-29

Abstract

Evidence is presented for kinematic and charge correlations of B mesons with charged pions and kaons. Using a new technique, a sample of over 80 000 partially reconstructed B mesons is obtained in 3.5. 10(6) hardronic Z0 decays recorded using the OPAL detector at LEP. The invariant mass distributions of B+ pi- and B+K- combinations show enhancements consistent with the decays of P-wave resonances of a b antiquark and a light quark. We observe an excess of 1738 +/- 195 B+ pi- pairs with invariant masses in the range 5.60-5.85 GeV and an excess of 149 +/-31 B+K- pairs with invariant masses in the range 5.80-6.00 GeV. Labeling the observed enhancements generically as B* we find BR(Z0 --> bBAR --> B*0 -->B(*)+pi-)/BR(Z0 --> bBAR --> B+) = 0.18 +/- 0.04, BR(Z0 --> bBAR --> B(s)*0 --> B(*)+K-)/BR(Z0 --> bBAR --> B+) = 0.026 +/- 0.008, where B()+ indicates the sum of B+ and B*+ and the errors include statistical and systematic contributions. From a study of pi-B charge-flavor correlations we conclude that the production flavor of a B meson can be tagged with the charge of a pion in an appropriately chosen kinematic region, and that the performance of this flavor tag compares favorably in the Z0 --> qqBAR environment with lepton-based tags.

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Documento generato il 05/12/20 alle ore 08:11:08