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  • Ablikim, M., et al. (author)
  • Analysis of D+ -> (K)over-bar(0)e(+)nu(e) and D+ -> pi(0)e(+)nu(e) semileptonic decays
  • 2017
  • In: Physical Review D. - : AMER PHYSICAL SOC. - 2470-0010 .- 2470-0029. ; 96:1
  • Journal article (peer-reviewed)abstract
    • Using 2.93 fb(-1) of data taken at 3.773 GeV with the BESIII detector operated at the BEPCII collider, we study the semileptonic decays D+ -> (K) over bar (0)e(+)nu(e) and D+ -> pi(0)e(+)nu(e). We measure the absolute decay branching fractions B(D+ -> (K) over bar (0)e(+)nu(e)) = (8.60 +/- 0.06 +/- 0.15) x 10(-2) and B(D+ -> pi(0)e(+)nu(e)) = (3.63 +/- 0.08 +/- 0.05) x 10(-3), where the first uncertainties are statistical and the second systematic. We also measure the differential decay rates and study the form factors of these two decays. With the values of |V-cs| and |V-cd| from Particle Data Group fits assuming Cabibbo-Kobayashi-Maskawa (CKM) unitarity, we obtain the values of the form factors at q(2) = 0, f(+)(K)(0) = 0.725 +/- 0.004 +/- 0.012, and f(+)(pi)(0) = 0.622 +/- 0.012 +/- 0.003. Taking input from recent lattice QCD calculations of these form factors, we determine values of the CKM matrix elements |V-cs| = 0.944 +/- 0.005 +/- 0.015 +/- 0.024 and |V-cd| = 0.210 +/- 0.004 +/- 0.001 +/- 0.009, where the third uncertainties are theoretical.
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peer-reviewed (1)
Author/Editor
Liu, X (1)
Berger, N. (1)
Cakir, O. (1)
Cetin, S. A. (1)
Chen, S. (1)
Chen, X. (1)
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Fang, Y. (1)
Jin, S. (1)
Liu, B. (1)
Liu, D. (1)
Liu, J. B. (1)
Liu, K. (1)
Ouyang, Q. (1)
Peters, K. (1)
Wang, K. (1)
Xu, L. (1)
Zhang, J. (1)
Zhang, L. (1)
Zhemchugov, A. (1)
Zhou, L. (1)
Gao, Y. (1)
Liu, J. (1)
Ma, L. L. (1)
Morello, G. (1)
Guo, Y (1)
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Qi, M. (1)
Sun, X. H. (1)
Kupsc, Andrzej (1)
Zhang, Y. (1)
Chen, G. (1)
Liu, Q. (1)
Wu, Z. (1)
Zeng, Y. (1)
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Wang, D. (1)
Wang, Y. (1)
Ferroli, R. Baldini (1)
Wang, M. (1)
Li, G. (1)
Zhu, Y. C. (1)
Pan, Y. (1)
Wang, Z. (1)
Varner, G. S. (1)
Yang, L. (1)
Zhu, S. (1)
Boyko, I. (1)
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University
Uppsala University (1)
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Year
2017 (1)

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