Using a large sample of D+ → K- K+ π+ decays collected by the FOCUS photoproduction experiment at Fermilab, we present the first non-parametric analysis of the K- π+ amplitudes in D+ → K- K+ π+ decay. The technique is similar to the technique used for our non-parametric measurements of the D+ → over(K, ̄)* 0 e+ ν form factors. Although these results are in rough agreement with those of E687, we observe a wider S-wave contribution for the over(K, ̄)0* 0 (1430) contribution than the PDG [W.-M. Yao, et al., J. Phys. G 33 (2006) 1], world average mass and width. We have some weaker evidence for the existence of a new, D-wave component at low values of the K- π+ mass.

Link, J., Yager, P., Anjos, J., Bediaga, I., Castromonte, C., Machado, A., et al. (2007). A non-parametric approach to measuring the K- π+ amplitudes in D+ → K- K+ π+ decay. PHYSICS LETTERS. SECTION B, 648(2-3), 156-163 [10.1016/j.physletb.2007.03.010].

A non-parametric approach to measuring the K- π+ amplitudes in D+ → K- K+ π+ decay

Moroni L.;Gianini G.;
2007

Abstract

Using a large sample of D+ → K- K+ π+ decays collected by the FOCUS photoproduction experiment at Fermilab, we present the first non-parametric analysis of the K- π+ amplitudes in D+ → K- K+ π+ decay. The technique is similar to the technique used for our non-parametric measurements of the D+ → over(K, ̄)* 0 e+ ν form factors. Although these results are in rough agreement with those of E687, we observe a wider S-wave contribution for the over(K, ̄)0* 0 (1430) contribution than the PDG [W.-M. Yao, et al., J. Phys. G 33 (2006) 1], world average mass and width. We have some weaker evidence for the existence of a new, D-wave component at low values of the K- π+ mass.
Articolo in rivista - Articolo scientifico
x
English
2007
648
2-3
156
163
none
Link, J., Yager, P., Anjos, J., Bediaga, I., Castromonte, C., Machado, A., et al. (2007). A non-parametric approach to measuring the K- π+ amplitudes in D+ → K- K+ π+ decay. PHYSICS LETTERS. SECTION B, 648(2-3), 156-163 [10.1016/j.physletb.2007.03.010].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/455394
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