Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K-0

We present measurements of branching fractions and CP-violating asymmetries in decays of B mesons to two-body final states containing a K-0. The results are based on a data sample of approximately 88x10(6) Y(4S)-->B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure B(B+-->K(0)pi(+))=(22.3+/-1.7+/-1.1)x10(-6), B(B-0-->K(0)pi(0))=(11.4+/-1.7+/-0.8)x10(-6), B(B+-->(K) over bar K-0(+))<2.5x10(-6), and B(B-0-->K-0(K) over bar (0))<1.8x10(-6), where the first uncertainty is statistical and the second is systematic, and the upper limits are at the 90% confidence level. In addition, the following CP-violating asymmetries have been measured: A(CP)(B+-->K(0)pi(+))=-0.05+/-0.08+/-0.01 and A(CP)(B-0-->K(0)pi(0))=0.03+/-0.36+/-0.11.

Data di pubblicazione: 2004
Titolo: Measurements of branching fractions and CP-violating asymmetries in B meson decays to charmless two-body states containing a K-0
Autori: AUBERT B; BARATE R; BOUTIGNY D; COUDERC F; GAILLARD JM; HICHEUR A; KARYOTAKIS Y; LEES JP; ROBBE P; TISSERAND V; ZGHICHE A; PALANO A; POMPILI A; CHEN JC; QI ND; RONG G; WANG P; ZHU YS; EIGEN G; OFTE I; STUGU B; ABRAMS GS; BORGLAND AW; BREON AB; BROWN DN; BUTTON-SHAFER J; CAHN RN; CHARLES E; DAY CT; GILL MS; GRITSAN AV; GROYSMAN Y; JACOBSEN RG; KADEL RW; KADYK J; KERTH LT; KOLOMENSKY YG; KUKARTSEV G; LECLERC C; LEVI ME; LYNCH G; MIR LM; ODDONE PJ; ORIMOTO TJ; PRIPSTEIN M; ROE NA; ROMOSAN A; RONAN MT; SHELKOV VG; TELNOV AV; WENZEL WA; FORD K; HARRISON TJ; HAWKES CM; KNOWLES DJ; MORGAN SE; PENNY RC; WATSON AT; WATSON NK; GOETZEN K; HELD T; KOCH H; LEWANDOWSKI B; PELIZAEUS M; PETERS K; SCHMUECKER H; STEINKE M; BOYD JT; CHEVALIER N; COTTINGHAM WN; KELLY MP; LATHAM TE; MACKAY C; WILSON FF; ABE K; CUHADAR-DONSZELMANN T; HEARTY C; MATTISON TS; MCKENNA JA; THIESSEN D; KYBERD P; MCKEMEY AK; TEODORESCU L; BLINOV VE; BUKIN AD; GOLUBEV VB; IVANCHENKO VN; KRAVCHENKO EA; ONUCHIN AP; SEREDNYAKOV SI; SKOVPEN YI; SOLODOV EP; YUSHKOV AN; BEST D; BRUINSMA M; CHAO M; ESCHRICH I; KIRKBY D; LANKFORD AJ; MANDELKERN M; MOMMSEN RK; ROETHEL W; STOKER DP; BUCHANAN C; HARTFIEL BL; GARY JW; LAYTER J; SHEN BC; WANG K; DEL RE D; HADAVAND HK; HILL EJ; MACFARLANE DB; PAAR HP; RAHATLOU S; SHARMA V; BERRYHILL JW; CAMPAGNARI C; DAHMES B; LEVY SL; LONG O; LU A; MAZUR MA; RICHMAN JD; VERKERKE W; BECK TW; BERINGER J; EISNER AM; HEUSCH CA; LOCKMAN WS; SCHALK T; SCHMITZ RE; SCHUMM BA; SEIDEN A; SPRADLIN P; TURRI M; WALKOWIAK W; WILLIAMS DC; WILSON MG; ALBERT J; CHEN E; DUBOIS-FELSMANN GP; DVORETSKII A; ERWIN RJ; HITLIN DG; NARSKY I; PIATENKO T; PORTER FC; RYD A; SAMUEL A; YANG S; JAYATILLEKE S; MANCINELLI G; MEADOWS BT; SOKOLOFF MD; ABE T; BLANC F; BLOOM P; CHEN S; CLARK PJ; FORD WT; NAUENBERG U; OLIVAS A; RANKIN P; ROY J; SMITH JG; VAN HOEK WC; ZHANG L; HARTON JL; HU T; SOFFER A; TOKI WH; WILSON RJ; ZHANG J; ALEKSAN R; EMERY S; GAIDOT A; GANZHUR SF; GIRAUD PF; MONCHENAULT GH; KOZANECKI W; LANGER M; LEGENDRE M; LONDON GW; MAYER B; SCHOTT G; VASSEUR G; YECHE C; ZITO M; ALTENBURG D; BRANDT T; BROSE J; COLBERG T; DICKOPP M; HAUKE A; LACKER HM; MALY E; MULLER-PFEFFERKORN R; NOGOWSKI R; OTTO S; SCHUBERT J; SCHUBERT KR; SCHWIERZ R; SPAAN B; WILDEN L; BERNARD D; BONNEAUD GR; BROCHARD F; COHEN-TANUGI J; GRENIER P; THIEBAUX C; VASILEIADIS G; VERDERI M; KHAN A; LAVIN D; MUHEIM F; PLAYFER S; SWAIN JE; ANDREOTTI M; AZZOLINI V; BETTONI D; BOZZI C; CALABRESE R.; CIBINETTO G; LUPPI E; NEGRINI M; PIEMONTESE L; SARTI A; TREADWELL E; ANULLI F; BALDINI-FERROLI R; CALCATERRA A; DE SANGRO R; FALCIAI D; FINOCCHIARO G; PATTERI P; PERUZZI IM; PICCOLO M; ZALLO A; BUZZO A; CAPRA R; CONTRI R; CROSETTI G; LO VETERE M; MACRI M; MONGE MR; PASSAGGIO S; PATRIGNANI C; ROBUTTI E; SANTRONI A; TOSI S; BAILEY S; MORII M; WON E; DUBITZKY RS; BHIMJI W; BOWERMAN DA; DAUNCEY PD; EGEDE U; GAILLARD JR; MORTON GW; NASH JA; TAYLOR GP; GRENIER GJ; LEE SJ; MALLIK U; COCHRAN J; CRAWLEY HB; LAMSA J; MEYER WT; PRELL S; ROSENBERG EI; YI J; BIASINI M; PIOPPI M; DAVIER M; GROSDIDIER G; HOCKER A; LAPLACE S; DIBERDER FL; LEPELTIER V; LUTZ AM; PETERSEN TC; PLASZCZYNSKI S; SCHUNE MH; TANTOT L; WORMSER G; BRIGLJEVIC V; CHENG CH; LANGE DJ; SIMANI MC; WRIGHT DM; BEVAN AJ; COLEMAN JP; FRY JR; GABATHULER E; GAMET R; KAY M; PARRY RJ; PAYNE DJ; SLOANE RJ; TOURAMANIS C; BACK JJ; CORMACK CM; HARRISON PF; SHORTHOUSE HW; VIDAL PB; BROWN CL; COWAN G; FLACK RL; FLAECHER HU; GEORGE S; GREEN MG; KURUP A; MARKER CE; MCMAHON TR; RICCIARDI S; SALVATORE F; VAITSAS G; WINTER MA; BROWN D; DAVIS CL; ALLISON J; BARLOW NR; BARLOW RJ; HART PA; HODGKINSON MC; JACKSON F; LAFFERTY GD; LYON AJ; WEATHERALL JH; WILLIAMS JC; FARBIN A; HULSBERGEN WD; JAWAHERY A; KOVALSKYI D; LAE CK; LILLARD V; ROBERTS DA; BLAYLOCK G; DALLAPICCOLA C; FLOOD KT; HERTZBACH SS; KOFLER R; KOPTCHEV VB; MOORE TB; SAREMI S; STAENGLE H; WILLOCQ S; COWAN R; SCIOLLA G; TAYLOR F; YAMAMOTO RK; MANGEOL DJJ; PATEL PM; ROBERTSON SH; LAZZARO A; PALOMBO F; BAUER JM; CREMALDI L; ESCHENBURG V; R; KROEGER R; REIDY J; SANDERS DA; SUMMERS DJ; ZHAO HW; BRUNET S; COTE-AHERN D; TARAS P; NICHOLSON H; RAVEN G; CARTARO C; CAVALLO N; DE NARDO G; FABOZZI F; GATTO C; LISTA L; PAOLUCCI P; PICCOLO D; SCIACCA C; JESSOP CP; LOSECCO JM; GABRIEL TA; BRAU B; GAN KK; HONSCHEID K; HUFNAGEL D; KAGAN H; KASS R; PULLIAM T; TER-ANTONYAN R; WONG QK; BRAU J; FREY R; IGONKINA O; POTTER CT; SINEV NB; STROM D; TORRENCE E; COLECCHIA F; DORIGO A; GALEAZZI F; MARGONI M; MORANDIN M; POSOCCO M; ROTONDO M; SIMONETTO F; STROILI R; TIOZZO G; VOCI C; BENAYOUN M; BRIAND H; CHAUVEAU J; DAVID P; DE LA VAISSIERE C; DEL BUONO L; HAMON O; JOHN MJJ; LERUSTE P; OCARIZ J; PIVK M; ROOS L; STARK J; T'JAMPENS S; THERIN G; MANFREDI PF; RE V; BEHERA PK; GLADNEY L; GUO QH; PANETTA J; ANGELINI C; BATIGNANI G; BETTARINI S; BONDIOLI M; BUCCI F; CALDERINI G; CARPINELLI M; DEL GAMBA V; FORTI F; GIORGI MA; LUSIANI A; MARCHIORI G; MARTINEZ-VIDAL F; MORGANTI M; NERI N; PAOLONI E; RAMA M; RIZZO G; SANDRELLI F; WALSH J; HAIRE M; JUDD D; PAICK K; WAGONER DE; CAVOTO G; DANIELSON N; ELMER P; LU C; MIFTAKOV V; OLSEN J; SMITH AJS; BELLINI F; FACCINI R; FERRAROTTO F; FERRONI F; GASPERO M; MAZZONI MA; MORGANTI S; PIERINI M; PIREDDA G; TEHRANI FS; VOENA C; CHRIST S; WAGNER G; WALDI R; ADYE T; DE GROOT N; FRANEK B; GEDDES NI; GOPAL GP; OLAIYA EO; XELLA SM; PUROHIT MV; WEIDEMANN AW; YUMICEVA FX; ASTON D; BARTOLDUS R; BERGER N; BOYARSKI AM; BUCHMUELLER OL; CONVERY MR; CRISTINZIANI M; DONG D; DORFAN J; DUJMIC D; DUNWOODIE W; ELSEN EE; FIELD RC; GLANZMAN T; GOWDY SJ; HADIG T; HALYO V; HRYN'OVA T; INNES WR; KELSEY MH; KIM P; KOCIAN ML; LANGENEGGER U; LEITH DWGS; LIBBY J; LUITZ S; LUTH V; LYNCH HL; MARSISKE H; MESSNER R; MULLER DR; O'GRADY CP; OZCAN VE; PERAZZO A; PERL M; PETRAK S; RATCLIFF BN; ROODMAN A; SALNIKOV AA; SCHINDLER RH; SCHWIENING J; SIMI G; SNYDER A; SOHA A; STELZER J; SU D; SULLIVAN MK; VA'VRA J; WAGNER SR; WEAVER M; WEINSTEIN AJR; WISNIEWSKI WJ; WRIGHT DH; YOUNG CC; BURCHAT PR; EDWARDS AJ; MEYER TI; PETERSEN BA; ROAT C; AHMED M; AHMED S; ALAM MS; ERNST JA; SAEED MA; SALEEM M; WAPPLER FR; BUGG W; KRISHNAMURTHY M; SPANIER SM; ECKMANN R; KIM H; RITCHIE JL; SATPATHY A; SCHWITTERS RF; IZEN JM; KITAYAMA I; LOU XC; YE S; BIANCHI F; BONA M; GALLO F; GAMBA D; BOREAN C; BOSISIO L; DELLA RICCA G; DITTONGO S; GRANCAGNOLO S; LANCERI L; POROPAT P; VITALE L; VUAGNIN G; PANVINI RS; BANERJEE S; BROWN CM; FORTIN D; JACKSON PD; KOWALEWSKI R; RONEY JM; BAND HR; DASU S; DATTA M; EICHENBAUM AM; JOHNSON JR; KUTTER PE; LI H; LIU R; LODOVICO FD; MIHALYI A; MOHAPATRA AK; PAN Y; PREPOST R; SEKULA SJ; VON WIMMERSPERG-TOELLER JH; WU J; WU SL; YU Z; NEAL H; CA BABAR COLLABORATION
Rivista: PHYSICAL REVIEW LETTERS
Parole Chiave: QCD FACTORIZATION; PI-PI; BABAR; SLAC
Abstract: We present measurements of branching fractions and CP-violating asymmetries in decays of B mesons to two-body final states containing a K-0. The results are based on a data sample of approximately 88x10(6) Y(4S)-->B (B) over bar decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We measure B(B+-->K(0)pi(+))=(22.3+/-1.7+/-1.1)x10(-6), B(B-0-->K(0)pi(0))=(11.4+/-1.7+/-0.8)x10(-6), B(B+-->(K) over bar K-0(+))<2.5x10(-6), and B(B-0-->K-0(K) over bar (0))<1.8x10(-6), where the first uncertainty is statistical and the second is systematic, and the upper limits are at the 90% confidence level. In addition, the following CP-violating asymmetries have been measured: A(CP)(B+-->K(0)pi(+))=-0.05+/-0.08+/-0.01 and A(CP)(B-0-->K(0)pi(0))=0.03+/-0.36+/-0.11.
Digital Object Identifier (DOI): 10.1103/PhysRevLett.92.201802
Handle: http://hdl.handle.net/11392/1211527
Appare nelle tipologie:03.1 Articolo su rivista

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