The K−π+ S-wave from the D+→K−π+π+ decay

J.M. Link,P.M. Yager,J.C. Anjos, I. Bediaga, C. Castromonte, A.A. Machado,J. Magnin,A. Massafferri,J.M. de Miranda,I.M. Pepe, E. Polycarpo, A.C. dos Reis, S. Carrillo, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat

Physics Letters B（2009）

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摘要

Using data from FOCUS (E831) experiment at Fermilab, we present a model independent partial-wave analysis of the K−π+ S-wave amplitude from the decay D+→K−π+π+. The S-wave is a generic complex function to be determined directly from the data fit. The P- and D-waves are parameterized by a sum of Breit–Wigner amplitudes. The measurement of the S-wave amplitude covers the whole elastic range of the K−π+ system.

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10.,13.25.Es,13.25.Ft,13.75.Lb,14.40.Aq,14.40.Lb

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