Study of the decay asymmetry parameter and CP violation parameter in the Λ_c⁺ → Λπ⁺ decay

Authors

J. M. Link, University of California, DavisFollow
P. M. Yager, University of California, DavisFollow
J. C. Anjos, Centro Brasileiro de Pesquisas FísicasFollow
I. Bediaga, Centro Brasileiro de Pesquisas FísicasFollow
C. Castromonte, Centro Brasileiro de Pesquisas Físicas
A. A. Machado, Centro Brasileiro de Pesquisas FísicasFollow
J. Magnin, Centro Brasileiro de Pesquisas FísicasFollow
A. Massafferri, Centro Brasileiro de Pesquisas FísicasFollow
Abaz Kryemadhi, Messiah UniversityFollow
I. M. Ahsan, Kansas State UniversityFollow

Document Type

Article

Publication Date

3-9-2006

Abstract

Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement of the weak decay-asymmetry parameter αΛc in Λc+→Λπ+ decay. Comparing particle with antiparticle decays, we obtain the first measurement of the CP violation parameter A≡αΛc+α Λc/αΛc-αΛc. We obtain αΛc=-0.78±0.16±0.19 and A=-0.07±0.19±0.24 where errors are statistical and systematic. © 2006 Elsevier B.V. All rights reserved.

Recommended Citation

Link, J. M.; Yager, P. M.; Anjos, J. C.; Bediaga, I.; Castromonte, C.; Machado, A. A.; Magnin, J.; Massafferri, A.; Kryemadhi, Abaz; and Ahsan, I. M., "Study of the decay asymmetry parameter and CP violation parameter in the Λ_c⁺ → Λπ⁺ decay" (2006). Educator Scholarship & Departmental Newsletters. 180.
https://mosaic.messiah.edu/mps_ed/180