We present a study of B decays into semileptonic final states containing charged and neutral D1(2420) and D2*(2460). The analysis is based on a data sample of 208fb-1 collected at the Υ(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. With a simultaneous fit to four different decay chains, the semileptonic branching fractions are extracted from measurements of the mass difference Δm=m(D**)- m(D) distributions. Product branching fractions are determined to be B(B+→D10ℓ+νℓ)×B(D10→D*+π-)=(2.97±0. 17±0.17)×10-3, B(B+→D2*0ℓ+νℓ)×B (D2*0→D(*)+π-)=(2.29±0.23±0.21)×10-3, B(B0→D1-ℓ+ν)×B(D1-→D*0π-)=(2.78±0. 24±0.25)×10-3 and B(B0→D2*-ℓ+νℓ) ×B(D2*-→D(*)0π-)=(1.77±0.26±0.11) ×10-3. In addition we measure the branching ratio Γ(D2 *→Dπ-)/Γ(D2*→D(*)π-)=0.62±0. 03±0.02. © 2009 The American Physical Society.
Measurement of semileptonic B decays into orbitally excited charmed mesons / Aubert, B., Bona, M., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J.g., Grauges, E., Lopez, L., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Sun, L., Abrams, G.s., Battaglia, M., Brown, D.n., Cahn, R.n., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 103:5(2009), pp. 051803-051803. [10.1103/physrevlett.103.051803]
Measurement of semileptonic B decays into orbitally excited charmed mesons
AUBERT B; BONA M; KARYOTAKIS Y; LEES JP; POIREAU V; PRENCIPE E; PRUDENT X; TISSERAND V; TICO JG; GRAUGES E; LOPEZ L; PALANO A; PAPPAGALLO M; EIGEN G; STUGU B; SUN L; ABRAMS GS; BATTAGLIA M; BROWN DN; CAHN RN; JACOBSEN RG; KERTH LT; KOLOMENSKY YG; LYNCH G; OSIPENKOV IL; RONAN MT; TACKMANN K; TANABE T; HAWKES CM; SONI N; WATSON AT; KOCH H; SCHROEDER T; WALKER D; ASGEIRSSON DJ; FULSOM BG; HEARTY C; MATTISON TS; MCKENNA JA; BARRETT M; KHAN A; BLINOV VE; BUKIN AD; BUZYKAEV AR; DRUZHININ VP; GOLUBEV VB; ONUCHIN AP; SEREDNYAKOV SI; SKOVPEN YI; SOLODOV EP; TODYSHEV KY; BONDIOLI M; CURRY S; ESCHRICH I; KIRKBY D; LANKFORD AJ; LUND P; MANDELKERN M; MARTIN EC; STOKER DP; ABACHI S; BUCHANAN C; GARY JW; LIU F; LONG O; SHEN BC; VITUG GM; YASIN Z; ZHANG L; SHARMA V; CAMPAGNARI C; HONG TM; KOVALSKYI D; MAZUR MA; RICHMAN JD; BECK TW; EISNER AM; FLACCO CJ; HEUSCH CA; KROSEBERG J; LOCKMAN WS; MARTINEZ AJ; SCHALK T; SCHUMM BA; SEIDEN A; WILSON MG; WINSTROM LO; CHENG CH; DOLL DA; ECHENARD B; FANG F; HITLIN DG; NARSKY I; PIATENKO T; PORTER FC; ANDREASSEN R; MANCINELLI G; MEADOWS BT; MISHRA K; SOKOLOFF MD; BLOOM PC; FORD WT; GAZ A; HIRSCHAUER JF; NAGEL M; NAUENBERG U; SMITH JG; ULMER KA; WAGNER SR; AYAD R; SOFFER A; TOKI WH; WILSON RJ; ALTENBURG DD; FELTRESI E; HAUKE A; JASPER H; KARBACH M; MERKEL J; PETZOLD A; SPAAN B; WACKER K; KOBEL MJ; MADER WF; NOGOWSKI R; SCHUBERT KR; SCHWIERZ R; VOLK A; BERNARD D; BONNEAUD GR; LATOUR E; VERDERI M; CLARK PJ; PLAYFER S; WATSON JE; ANDREOTTI M; BETTONI D; BOZZI C; CALABRESE R; CECCHI A; CIBINETTO G; FRANCHINI P; LUPPI E; NEGRINI M; PETRELLA A; PIEMONTESE L; SANTORO V; BALDINI FERROLI R; CALCATERRA A; DE SANGRO R; FINOCCHIARO G; PACETTI S; PATTERI P; PERUZZI IM; PICCOLO M; RAMA M; ZALLO A; BUZZO A; CONTRI R; LO VETERE M; MACRI MM; MONGE MR; PASSAGGIO S; PATRIGNANI C; ROBUTTI E; SANTRONI A; TOSI S; CHAISANGUANTHUM KS; MORII M; ADAMETZ A; MARKS J; SCHENK S; UWER U; KLOSE V; LACKER HM; BARD DJ; DAUNCEY PD; NASH JA; TIBBETTS M; BEHERA PK; CHAI X; CHARLES MJ; MALLIK U; COCHRAN J; CRAWLEY HB; DONG L; MEYER WT; PRELL S; ROSENBERG EI; RUBIN AE; GAO YY; GRITSAN AV; GUO ZJ; LAE CK; ARNAUD N; BEQUILLEUX J; D'ORAZIO A; DAVIER M; DA COSTA JF; GROSDIDIER G; HOCKER A; LEPELTIER V; LE DIBERDER F; LUTZ AM; PRUVOT S; ROUDEAU P; SCHUNE MH; SERRANO J; SORDINI V; STOCCHI A; WORMSER G; LANGE DJ; WRIGHT DM; BINGHAM I; BURKE JP; CHAVEZ CA; FRY JR; GABATHULER E; GAMET R; HUTCHCROFT DE; PAYNE DJ; TOURAMANIS C; BEVAN AJ; CLARKE CK; GEORGE KA; DI LODOVICO F; SACCO R; SIGAMANI M; COWAN G; FLAECHER HU; HOPKINS DA; PARAMESVARAN S; SALVATORE F; WREN AC; BROWN DN; DAVIS CL; DENIG AG; FRITSCH M; GRADL W; SCHOTT G; ALWYN KE; BAILEY D; BARLOW RJ; CHIA YM; EDGAR CL; JACKSON G; LAFFERTY GD; WEST TJ; YI JI; ANDERSON J; CHEN C; JAWAHERY A; ROBERTS DA; SIMI G; TUGGLE JM; DALLAPICCOLA C; LI X; SALVATI E; SAREMI S; COWAN R; DUJMIC D; FISHER PH; SCIOLLA G; SPITZNAGEL M; TAYLOR F; YAMAMOTO RK; ZHAO M; PATEL PM; ROBERTSON SH; LAZZARO A; LOMBARDO V; PALOMBO F; BAUER JM; CREMALDI L; GODANG R; KROEGER R; SANDERS DA; SUMMERS DJ; ZHAO HW; SIMARD M; TARAS P; VIAUD FB; NICHOLSON H; DE NARDO G; LISTA L; MONORCHIO D; ONORATO G; SCIACCA C; RAVEN G; SNOEK HL; JESSOP CP; KNOEPFEL KJ; LOSECCO JM; WANG WF; BENELLI G; CORWIN LA; HONSCHEID K; KAGAN H; KASS R; MORRIS JP; RAHIMI AM; REGENSBURGER JJ; SEKULA SJ; WONG QK; BLOUNT NL; BRAU J; FREY R; IGONKINA O; KOLB JA; LU M; RAHMAT R; SINEV NB; STROM D; STRUBE J; TORRENCE E; CASTELLI G; GAGLIARDI N; MARGONI M; MORANDIN M; POSOCCO M; ROTONDO M; SIMONETTO F; STROILI R; VOCI C; SANCHEZ PD; BEN HAIM E; BRIAND H; CALDERINI G; CHAUVEAU J; DAVID P; DEL BUONO L; HAMON O; LERUSTE P; OCARIZ J; PEREZ A; PRENDKI J; SITT S; GLADNEY L; BIASINI M; COVARELLI R; MANONI E; ANGELINI C; BATIGNANI G; BETTARINI S; CARPINELLI M; CERVELLI A; FORTI F; GIORGI MA; LUSIANI A; MARCHIORI G; MORGANTI M; NERI N; PAOLONI E; RIZZO G; WALSH JJ; PEGNA DL; LU C; OLSEN J; SMITH AJS; TELNOV AV; ANULLI F; BARACCHINI E; CAVOTO, Gianluca ;DEL RE, Daniele ;DI MARCO E; FACCINI, Riccardo ;FERRAROTTO F; FERRONI, Fernando ;GASPERO, Mario ;JACKSON PD; GIOI LL; MAZZONI MA; MORGANTI S; PIREDDA G; POLCI F; RENGA F; VOENA C ;EBERT M; HARTMANN T; SCHRODER H; WALDI R; ADYE T; FRANEK B; OLAIYA EO; WILSON FF; EMERY S; ESCALIER M; ESTEVE L; GANZHUR SF; DE MONCHENAULT GH; KOZANECKI W; VASSEUR G; YECHE C; ZITO M; CHEN XR; LIU H; PARK W; PUROHIT MV; WHITE RM; WILSON JR; ALLEN MT; ASTON D; BARTOLDUS R; BECHTLE P; BENITEZ JF; CENCI R; COLEMAN JP; CONVERY MR; DINGFELDER JC; DORFAN J; DUBOIS FELSMANN GP; DUNWOODIE W; FIELD RC; GABAREEN AM; GOWDY SJ; GRAHAM MT; GRENIER P; HAST C; INNES WR; KAMINSKI J; KELSEY MH; KIM H; KIM P; KOCIAN ML; LEITH DWGS; LI S; LINDQUIST B; LUITZ S; LUTH V; LYNCH HL; MACFARLANE DB; MARSISKE H; MESSNER R; MULLER DR; NEAL H; NELSON S; O'GRADY CP; OFTE I; PERAZZO A; PERL M; RATCLIFF BN; ROODMAN A; SALNIKOV AA; SCHINDLER RH; SCHWIENING J; SNYDER A; SU D; SULLIVAN MK; SUZUKI K; SWAIN SK; THOMPSON JM; VA'VRA J; WAGNER AP; WEAVER M; WEST CA; WISNIEWSKI WJ; WITTGEN M; WRIGHT DH; WULSIN HW; YARRITU AK; YI K; YOUNG CC; ZIEGLER V; BURCHAT PR; EDWARDS AJ; MAJEWSKI SA; MIYASHITA TS; PETERSEN BA; WILDEN L; AHMED S; ALAM MS; ERNST JA; PAN B; SAEED MA; ZAIN SB; SPANIER SM; WOGSLAND BJ; ECKMANN R; RITCHIE JL; RULAND AM; SCHILLING CJ; SCHWITTERS RF; DRUMMOND BW; IZEN JM; LOU XC; BIANCHI F; GAMBA D; PELLICCIONI M; BOMBEN M; BOSISIO L; CARTARO C; DELLA RICCA G; LANCERI L; VITALE L; AZZOLINI V; LOPEZ MARCH N; MARTINEZ VIDAL F; MILANES DA; OYANGUREN A; ALBERT J; BANERJEE S; BHUYAN B; CHOI HHF; HAMANO K; KOWALEWSKI R; LEWCZUK MJ; NUGENT IM; RONEY JM; SOBIE RJ; GERSHON TJ; HARRISON PF; ILIC J; LATHAM TE; MOHANTY GB; BAND HR; CHEN X; DASU S; FLOOD KT; PAN Y; PIERINI M; PREPOST R; VUOSALO CO; WU SL
2009
Abstract
We present a study of B decays into semileptonic final states containing charged and neutral D1(2420) and D2*(2460). The analysis is based on a data sample of 208fb-1 collected at the Υ(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. With a simultaneous fit to four different decay chains, the semileptonic branching fractions are extracted from measurements of the mass difference Δm=m(D**)- m(D) distributions. Product branching fractions are determined to be B(B+→D10ℓ+νℓ)×B(D10→D*+π-)=(2.97±0. 17±0.17)×10-3, B(B+→D2*0ℓ+νℓ)×B (D2*0→D(*)+π-)=(2.29±0.23±0.21)×10-3, B(B0→D1-ℓ+ν)×B(D1-→D*0π-)=(2.78±0. 24±0.25)×10-3 and B(B0→D2*-ℓ+νℓ) ×B(D2*-→D(*)0π-)=(1.77±0.26±0.11) ×10-3. In addition we measure the branching ratio Γ(D2 *→Dπ-)/Γ(D2*→D(*)π-)=0.62±0. 03±0.02. © 2009 The American Physical Society.
Citazione
Measurement of semileptonic B decays into orbitally excited charmed mesons / Aubert, B., Bona, M., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J.g., Grauges, E., Lopez, L., Palano, A., Pappagallo, M., Eigen, G., Stugu, B., Sun, L., Abrams, G.s., Battaglia, M., Brown, D.n., Cahn, R.n., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 103:5(2009), pp. 051803-051803. [10.1103/physrevlett.103.051803]
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