New Measurements of the D + → K ∗ 0 μ + ν Form Factor Ratios

نویسندگان

  • J. C. Anjos
  • I. M. Pepe
  • A. Sánchez-Hernández
  • J. P. Cumalat
  • J. E. Ramirez
  • H. W. K. Cheung
  • G. Chiodini
  • L. A. Garren
  • F. L. Fabbri
  • K. H. Chang
  • J. W. Kwak
  • K. B. Lee
  • D. Pedrini
  • M. Rovere
  • G. Bonomi
  • G. Gianini
  • G. Liguori
  • M. M. Merlo
  • D. Pantea
  • S. P. Ratti
  • C. Riccardi
  • P. Vitulo
  • H. Hernandez
  • K. Stenson
  • E. W. Vaandering
چکیده

Using a large sample of D → Kπμν decays collected by the FOCUS photoproduction experiment at Fermilab, we present new measurements of two semileptonic form factor ratios: rv and r2. We find rv = 1.504 ± 0.057 ± 0.039 and r2 = 0.875 ± 0.049 ± 0.064. Our form factor results include the effects of the s-wave interference discussed in Reference [1].

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تاریخ انتشار 2002