Study of B±→J/ψπ± and B±→J/ψK± Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation

We study B±→J/ψπ± and B±→J/ψK± decays in a sample of about 89×10^6 BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We observe a signal of 244±20 B±→J/ψπ± events and determine the ratio B(B±→J/ψπ±)/B(B±→J/ψK±) to be [5.37±0.45(stat)±0.11(syst)]%. The charge asymmetries for the B±→J/ψπ± and B±→J/ψK± decays are determined to be Aπ=0.123±0.085(stat)±0.004(syst) and AK=0.030±0.015(stat)±0.006(syst), respectively.

Titolo:	Study of B±→J/ψπ± and B±→J/ψK± Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation
Autori:	AUBERT B BARATE R BOUTIGNY D COUDERC F GAILLARD JM HICHEUR A KARYOTAKIS Y LEES JP 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 RONAN MT SHELKOV VG TELNOV AV WENZEL WA FORD K HARRISON TJ HAWKES CM MORGAN SE WATSON AT WATSON NK FRITSCH M GOETZEN K HELD T KOCH H LEWANDOWSKI B PELIZAEUS M STEINKE M BOYD JT CHEVALIER N COTTINGHAM WN KELLY MP LATHAM TE WILSON FF ABE K CUHADAR DONSZELMANN T HEARTY C MATTISON TS MCKENNA JA THIESSEN D KYBERD P TEODORESCU L BLINOV VE BUKIN AD DRUZHININ VP 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 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 EISNER AM HEUSCH CA LOCKMAN WS SCHALK T SCHMITZ RE SCHUMM BA SEIDEN A SPRADLIN P WILLIAMS DC WILSON MG ALBERT J CHEN E DUBOIS FELSMANN GP DVORETSKII A 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 SMITH JG VAN HOEK WC ZHANG L HARTON JL HU T SOFFER A TOKI WH WILSON RJ ALTENBURG D BRANDT T BROSE J COLBERG T DICKOPP M FELTRESI E HAUKE A LACKER HM MALY E MULLER PFEFFERKORN R NOGOWSKI R OTTO S SCHUBERT J SCHUBERT KR SCHWIERZ R SPAAN B BERNARD D BONNEAUD GR BROCHARD F GRENIER P THIEBAUX C VASILEIADIS G VERDERI M BARD DJ KHAN A LAVIN D MUHEIM F PLAYFER S ANDREOTTI M AZZOLINI V BETTONI D BOZZI C CALABRESE R CIBINETTO G LUPPI E NEGRINI M SARTI A TREADWELL E BALDINI FERROLI R CALCATERRA A DE SANGRO R FINOCCHIARO G PATTERI P 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 BRANDENBURG G MORII M WON E DUBITZKY RS LANGENEGGER U 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 DAVIER M GROSDIDIER G HOCKER A LAPLACE S LE DIBERDER F LEPELTIER V LUTZ AM PETERSEN TC PLASZCZYNSKI S SCHUNE MH TANTOT L WORMSER G 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 HARRISON PF MOHANTY GB 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 LAFFERTY GD LYON AJ 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 GODANG R KROEGER R REIDY J SANDERS DA SUMMERS DJ ZHAO HW BRUNET S COTE D TARAS P NICHOLSON H CARTARO C CAVALLO N FABOZZI F GATTO C LISTA L MONORCHIO D PAOLUCCI P PICCOLO D SCIACCA C BAAK M RAVEN G WILDEN L JESSOP CP LOSECCO JM GABRIEL TA ALLMENDINGER T 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, MARTINO MORANDIN M POSOCCO M ROTONDO M SIMONETTO, FRANCO STROILI, ROBERTO TIOZZO G VOCI, CESARE 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 T'JAMPENS S THERIN G MANFREDI PF RE V BEHERA PK GLADNEY L GUO QH PANETTA J ANULLI F BIASINI M PERUZZI IM PIOPPI M 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 DANIELSON N ELMER P LU C MIFTAKOV V OLSEN J SMITH AJS VARNES EW BELLINI F CAVOTO G FACCINI R FERRAROTTO F FERRONI F GASPERO M LI GIOI L 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 ALEKSAN R EMERY S GAIDOT A GANZHUR SF GIRAUD PF DE MONCHENAULT GH KOZANECKI W LANGER M LEGENDRE M LONDON GW MAYER B SCHOTT G VASSEUR G YECHE C ZITO M PUROHIT MV WEIDEMANN AW YUMICEVA FX ASTON D BARTOLDUS R BERGER N BOYARSKI AM BUCHMUELLER OL CONVERY MR CRISTINZIANI M DE NARDO G 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 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, GABRIELE SNYDER A SOHA A STELZER J SU D SULLIVAN MK VA'VRA J WAGNER SR WEAVER M WEINSTEIN AJR WISNIEWSKI WJ WITTGEN M WRIGHT DH YOUNG CC BURCHAT PR EDWARDS AJ MEYER TI PETERSEN BA ROAT C 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 COSSUTTI F 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 HOLLAR JJ JOHNSON JR KUTTER PE LI H LIU R DI LODOVICO F MIHALYI A MOHAPATRA AK PAN Y PREPOST R SEKULA SJ TAN P VON WIMMERSPERG TOELLER JH WU J WU SL YU Z NEAL H CA BABAR COLLABORATION mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2004
Rivista:	PHYSICAL REVIEW LETTERS
Abstract:	We study B±→J/ψπ± and B±→J/ψK± decays in a sample of about 89×10^6 BB̅ pairs collected with the BABAR detector at the PEP-II asymmetric B factory at SLAC. We observe a signal of 244±20 B±→J/ψπ± events and determine the ratio B(B±→J/ψπ±)/B(B±→J/ψK±) to be [5.37±0.45(stat)±0.11(syst)]%. The charge asymmetries for the B±→J/ψπ± and B±→J/ψK± decays are determined to be Aπ=0.123±0.085(stat)±0.004(syst) and AK=0.030±0.015(stat)±0.006(syst), respectively.
Handle:	http://hdl.handle.net/11577/2472302
Appare nelle tipologie:	01.01 - Articolo in rivista

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