First measurement of the form factors in the decays D0→ρ- <sup>e+</sup>ν<inf>e</inf> and D+<sup>→ρ0e+</sup>ν<inf>e</inf>
Genre
Journal ArticleDate
2013-03-26Author
Dobbs, SMetreveli, Z
Seth, KK
Tomaradze, A
Xiao, T
Martin, L
Powell, A
Wilkinson, G
Mendez, H
Asner, DM
Tatishvili, G
Ge, JY
Huang, GS
Miller, DH
Pavlunin, V
Shipsey, IPJ
Xin, B
Adams, GS
Hu, D
Moziak, B
Napolitano, J
Ecklund, KM
Insler, J
Muramatsu, H
Park, CS
Pearson, LJ
Thorndike, EH
Ricciardi, S
Thomas, C
Artuso, M
Blusk, S
Mountain, R
Skwarnicki, T
Stone, S
Zhang, LM
Bonvicini, G
Cinabro, D
Lincoln, A
Smith, MJ
Zhou, P
Zhu, J
Naik, P
Rademacker, J
Edwards, KW
Randrianarivony, K
Briere, RA
Vogel, H
Onyisi, PUE
Rosner, JL
Alexander, JP
Cassel, DG
Das, S
Ehrlich, R
Gibbons, L
Gray, SW
Hartill, DL
Heltsley, BK
Kreinick, DL
Kuznetsov, VE
Patterson, JR
Peterson, D
Riley, D
Ryd, A
Sadoff, AJ
Shi, X
Sun, WM
Yelton, J
Rubin, P
Lowrey, N
Mehrabyan, S
Selen, M
Wiss, J
Libby, J
Kornicer, M
Mitchell, RE
Tarbert, CM
Besson, D
Pedlar, TK
Cronin-Hennessy, D
Hietala, J
Subject
CLEO CollaborationPermanent link to this record
http://hdl.handle.net/20.500.12613/5966
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10.1103/PhysRevLett.110.131802Abstract
The beauty to up quark coupling constant |Vub| can be extracted from B→ρe+νe combined with the form factors for D→K*e+νe and B→Vℓ+ℓ- and D→ρe+ν e. Using the entire CLEO-c ψ(3770)→DD̄ event sample, corresponding to an integrated luminosity of 818 pb-1 and approximately 5.4×106 DD̄ events, we measure the form factors for the decays D0→ρ-e+νe and D +→ρ0e+νe for the first time and the branching fractions with improved precision. A four-dimensional unbinned maximum likelihood fit determines the form factor ratios to be V(0)/A 1(0)=1.48±0.15±0.05 and A2(0)/A 1(0)=0.83±0.11±0.04. Assuming Cabibbo-Kobayashi-Maskawa unitarity, the known D meson lifetimes, and our measured branching fractions we obtain the form factor normalizations A1(0), A2(0), and V(0). We also present a measurement of the branching fraction for D +→ωe+νe with improved precision. © 2013 American Physical Society.Citation to related work
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http://dx.doi.org/10.34944/dspace/5948