Analysis of the D(+) -> K(-) pi(+) e(+) nu(e) decay channel

Using 347: 5 fb(-1) of data recorded by the BABAR detector at the PEP-II electron-positron collider 244 x 10(3) signal events for the D(+) -> K(-) pi(+)e(+)nu(e) decay channel are analyzed. This decay mode is dominated by the (K) over bar*(892)(0) contribution. We determine the (K) over bar*(892)(0) parameters: m(K*(892)0) (895.4 +/- 0.2 +/- 0.2) MeV/c(2)Gamma(0)(K*(892)0) (46.5 +/- 0.3 +/- 0.2) MeV/c(2) and the Blatt-Weisskopf parameter r(BW) = 2.1 +/- 0.5 +/- 0.5 (GeV/c)(-1) where the first uncertainty comes from statistics and the second from systematic uncertainties. We also measure the parameters defining the corresponding hadronic form factors at q(2) = 0 (r(V) = V(0)/A(1)(0) = 1.463 +/- 0.031 r(2) = A(2)(0)/A(1)(0) = 0.801 +/- 0.020 +/- 0.020) and the value of the axial-vector pole mass parametrizing the q(2) variation of A(1) and A(2): m(A) (2.63 +/- 0.10 +/- 0.13) GeV/c(2). The S-wave fraction is equal to (5.79 +/- 0.16 +/- 0: 15)%. Other signal components correspond to fractions below 1%. Using the D(+) -> K(-)pi(+)pi(+) channel as a normalization we measure the D(+) semileptonic branching fraction: B(D(+) K(-)pi(+)e(+)nu(e)) (4.00 +/- 0: 03 +/- 0.04 +/- 0.09) x 10(-2) where the third uncertainty comes from external inputs. We then obtain the value of the hadronic form factor A(1) at q(2) 0: A(1)(0) 0.6200 +/- 0.0056 +/- 0.0065 +/- 0.0071. Fixing the P-wave parameters we measure the phase of the S wave for several values of the K pi mass. These results confirm those obtained with K pi production at small momentum transfer in fixed target experiments.

Data di pubblicazione: 2011
Titolo: Analysis of the D(+) -> K(-) pi(+) e(+) nu(e) decay channel
Autori: Sanchez PD; Lees JP; Poireau V; Prencipe E; Tisserand V; Tico JG; Grauges E; Martinelli M; Milanes DA; Palano A; Pappagallo M; Eigen G; Stugu B; Sun L; Brown DN; Kerth LT; Kolomensky YG; Lynch G; Osipenkov IL; Koch H; Schroeder T; Asgeirsson DJ; Hearty C; Mattison TS; McKenna JA; Khan A; Randle-Conde A; Blinov VE; Buzykaev AR; Druzhinin VP; Golubev VB; Kravchenko EA; Onuchin AP; Serednyakov SI; Skovpen YI; Solodov EP; Todyshev KY; Yushkov AN; Bondioli M; Curry S; Kirkby D; Lankford AJ; Mandelkern M; Martin EC; Stoker DP; Atmacan H; Gary JW; Liu F; Long O; Vitug GM; Campagnari C; Hong TM; Kovalskyi D; Richman JD; West C; Eisner AM; Heusch CA; Kroseberg J; Lockman WS; Martinez AJ; Schalk T; Schumm BA; Seiden A; Winstrom LO; Cheng CH; Doll DA; Echenard B; Hitlin DG; Ongmongkolkul P; Porter FC; Rakitin AY; Andreassen R; Dubrovin MS; Mancinelli G; Meadows BT; Sokoloff MD; Bloom PC; Ford WT; Gaz A; Nagel M; Nauenberg U; Smith JG; Wagner SR; Ayad R; Toki WH; Jasper H; Karbach TM; Petzold A; Spaan B; Kobel MJ; Schubert KR; Schwierz R; Bernard D; Verderi M; Clark PJ; Playfer S; Watson JE; Andreotti M; Bettoni D; Bozzi C; Calabrese R; Cecchi A; Cibinetto G; Fioravanti E; Franchini P; Garzia I; Luppi E; Munerato M; Negrini M; Petrella A; Piemontese L; Baldini-Ferroli R; Calcaterra A; de Sangro R; Finocchiaro G; Nicolaci M; Pacetti S; Patteri P; Peruzzi IM; Piccolo M; Rama M; Zallo A; Contri R; Guido E; Lo Vetere M; Monge MR; Passaggio S; Patrignani C; Robutti E; Tosi S; Bhuyan B; Prasad V; Lee CL; Morii M; Adametz A; Marks J; Uwer U; Bernlochner FU; Ebert M; Lacker HM; Lueck T; Volk A; Dauncey PD; Tibbetts M; Behera PK; Mallik U; Chen C; Cochran J; Crawley HB; Dong L; Meyer WT; Prell S; Rosenberg EI; Rubin AE; Gritsan AV; Guo ZJ; Arnaud N; Davier M; Derkach D; da Costa JF; Grosdidier G; Le Diberder F; Lutz AM; Malaescu B; Perez A; Roudeau P; Schune MH; Serrano J; Sordini V; Stocchi A; Wang L; Wormser G; Lange DJ; Wright DM; Bingham I; Chavez CA; Coleman JP; Fry JR; Gabathuler E; Gamet R; Hutchcroft DE; Payne DJ; Touramanis C; Bevan AJ; Di Lodovico F; Sacco R; Sigamani M; Cowan G; Paramesvaran S; Wren AC; Brown DN; Davis CL; Denig AG; Fritsch M; Gradl W; Hafner A; Alwyn KE; Bailey D; Barlow RJ; Jackson G; Lafferty GD; Anderson J; Cenci R; Jawahery A; Roberts DA; Simi G; Tuggle JM; Dallapiccola C; Salvati E; Cowan R; Dujmic D; Sciolla G; Zhao M; Lindemann D; Patel PM; Robertson SH; Schram M; Biassoni P; Lazzaro A; Lombardo V; Palombo F; Stracka S; Cremaldi L; Godang R; Kroeger R; Sonnek P; Summers DJ; Nguyen X; Simard M; Taras P; De Nardo G; Monorchio D; Onorato G; Sciacca C; Raven G; Snoek HL; Jessop CP; Knoepfel KJ; LoSecco JM; Wang WF; Corwin LA; Honscheid K; Kass R; Morris JP; Blount NL; Brau J; Frey R; Igonkina O; Kolb JA; Rahmat R; Sinev NB; Strom D; Strube J; Torrence E; Castelli G; Feltresi E; Gagliardi N; Margoni M; Morandin M; Posocco M; Rotondo M; Simonetto F; Stroili R; Ben-Haim E; Bonneaud GR; Briand H; Calderini G; Chauveau J; Hamon O; Leruste P; Marchiori G; Ocariz J; Prendki J; Sitt S; Biasini M; Manoni E; Rossi A; Angelini C; Batignani G; Bettarini S; Carpinelli M; Casarosa G; Cervelli A; Forti F; Giorgi MA; Lusiani A; Neri N; Paoloni E; Rizzo G; Walsh JJ; Pegna DL; Lu C; Olsen J; Smith AJS; Telnov AV; Anulli F; Baracchini E; Cavoto G; Faccini R; Ferrarotto F; Ferroni F; Gaspero M; Gioi LL; Mazzoni MA; Piredda G; Renga F; Hartmann T; Leddig T; Schroder H; Waldi R; Adye T; Franek B; Olaiya EO; Wilson FF; Emery S; de Monchenault GH; Vasseur G; Yeche C; Zito M; Allen MT; Aston D; Bard DJ; Bartoldus R; Benitez JF; Cartaro C; Convery MR; Dorfan J; Dubois-Felsmann GP; Dunwoodie W; Field RC; Sevilla MF; Fulsom BG; Gabareen AM; Graham MT; Grenier P; Hast C; Innes WR; Kelsey MH; Kim H; Kim P; Kocian ML; Leith DWGS; Li S; Lindquist B; Luitz S; Luth V; Lynch HL; MacFarlane DB; Marsiske H; Muller DR; Neal H; Nelson S; O'Grady CP; Ofte I; Perl M; Pulliam T; Ratcliff BN; Roodman A; Salnikov AA; Santoro V; Schindler RH; Schwiening J; Snyder A; Su D; Sullivan MK; Sun S; Suzuki K; Thompson JM; Va'vra J; Wagner AP; Weaver M; Wisniewski WJ; Wittgen M; Wright DH; Wulsin HW; Yarritu AK; Young CC; Ziegler V; Chen XR; Park W; Purohit MV; White RM; Wilson JR; Sekula SJ; Bellis M; Burchat PR; Edwards AJ; Miyashita TS; Ahmed S; Alam MS; Ernst JA; Pan B; Saeed MA; Zain SB; Guttman N; Soffer A; Lund P; Spanier SM; Eckmann R; Ritchie JL; Ruland AM; Schilling CJ; Schwitters RF; Wray BC; Izen JM; Lou XC; Bianchi F; Gamba D; Pelliccioni M; Bomben M; Lanceri L; Vitale L; Lopez-March N; Martinez-Vidal F; Oyanguren A; Albert J; Banerjee S; Choi HHF; Hamano K; King GJ; Kowalewski R; Lewczuk MJ; Lindsay C; Nugent IM; Roney JM; Sobie RJ; Gershon TJ; Harrison PF; Latham TE; Puccio EMT; Band HR; Dasu S; Flood KT; Pan Y; Prepost R; Vuosalo CO; Wu SL
Rivista: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY
Parole Chiave: D(+) -> K(-) pi(+) e(+) nu(e) decay channel
Abstract: Using 347: 5 fb(-1) of data recorded by the BABAR detector at the PEP-II electron-positron collider 244 x 10(3) signal events for the D(+) -> K(-) pi(+)e(+)nu(e) decay channel are analyzed. This decay mode is dominated by the (K) over bar*(892)(0) contribution. We determine the (K) over bar*(892)(0) parameters: m(K*(892)0) (895.4 +/- 0.2 +/- 0.2) MeV/c(2)Gamma(0)(K*(892)0) (46.5 +/- 0.3 +/- 0.2) MeV/c(2) and the Blatt-Weisskopf parameter r(BW) = 2.1 +/- 0.5 +/- 0.5 (GeV/c)(-1) where the first uncertainty comes from statistics and the second from systematic uncertainties. We also measure the parameters defining the corresponding hadronic form factors at q(2) = 0 (r(V) = V(0)/A(1)(0) = 1.463 +/- 0.031 r(2) = A(2)(0)/A(1)(0) = 0.801 +/- 0.020 +/- 0.020) and the value of the axial-vector pole mass parametrizing the q(2) variation of A(1) and A(2): m(A) (2.63 +/- 0.10 +/- 0.13) GeV/c(2). The S-wave fraction is equal to (5.79 +/- 0.16 +/- 0: 15)%. Other signal components correspond to fractions below 1%. Using the D(+) -> K(-)pi(+)pi(+) channel as a normalization we measure the D(+) semileptonic branching fraction: B(D(+) K(-)pi(+)e(+)nu(e)) (4.00 +/- 0: 03 +/- 0.04 +/- 0.09) x 10(-2) where the third uncertainty comes from external inputs. We then obtain the value of the hadronic form factor A(1) at q(2) 0: A(1)(0) 0.6200 +/- 0.0056 +/- 0.0065 +/- 0.0071. Fixing the P-wave parameters we measure the phase of the S wave for several values of the K pi mass. These results confirm those obtained with K pi production at small momentum transfer in fixed target experiments.
Digital Object Identifier (DOI): 10.1103/PhysRevD.83.072001
Handle: http://hdl.handle.net/11392/1548405
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