학술논문
Measurement of the hadronic form factor in D0→K-e+νe decays
Document Type
article
Author
Aubert, B; Bona, M; Boutigny, D; Karyotakis, Y; Lees, JP; Poireau, V; Prudent, X; Tisserand, V; Zghiche, A; Tico, JG; Grauges, E; Lopez, L; Palano, A; Eigen, G; Stugu, B; Sun, L; Abrams, GS; Battaglia, M; Brown, DN; Button-Shafer, J; Cahn, RN; Groysman, Y; Jacobsen, RG; Kadyk, JA; Kerth, LT; Kolomensky, YG; Kukartsev, G; Pegna, DL; Lynch, G; Mir, LM; Orimoto, TJ; Ronan, MT; Tackmann, K; Wenzel, WA; Del Amo Sanchez, P; Hawkes, CM; Watson, AT; Held, T; Koch, H; Lewandowski, B; Pelizaeus, M; Schroeder, T; Steinke, M; Walker, D; Asgeirsson, DJ; Cuhadar-Donszelmann, T; Fulsom, BG; Hearty, C; Knecht, NS; Mattison, TS; McKenna, JA; Khan, A; Saleem, M; Teodorescu, L; Blinov, VE; Bukin, AD; 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; Foulkes, SD; Gary, JW; Liu, F; Long, O; Shen, BC; Zhang, L; Paar, HP; Rahatlou, S; Sharma, V; Berryhill, JW; Campagnari, C; Cunha, A; Dahmes, B; Hong, TM; Kovalskyi, D; Richman, JD; Beck, TW; Eisner, AM; Flacco, CJ; Heusch, CA; Kroseberg, J; Lockman, WS; Schalk, T; Schumm, BA; Seiden, A; Williams, DC
Source
Physical Review D - Particles, Fields, Gravitation and Cosmology. 76(5)
Subject
Language
Abstract
The shape of the hadronic form factor f+(q2) in the decay D0→K-e+νe has been measured in a model independent analysis and compared with theoretical calculations. We use 75fb-1 of data recorded by the BABAR detector at the PEP-II electron-positron collider. The corresponding decay branching fraction, relative to the decay D0→K-π+, has also been measured to be RD=B(D0→K-e+νe(γ))/B(D0→K-π+(γ))=0.927±0. 007±0.012. From these results, and using the present world average value for B(D0→K-π+), the normalization of the form factor at q2=0 is determined to be f+(0)=0.727±0.007±0.005±0.007 where the uncertainties are statistical, systematic, and from external inputs, respectively. © 2007 The American Physical Society.