Measurement of the decay asymmetry parameters in Λc⁺ → Λπ⁺ and Λc⁺ → Σ⁺π⁰

Authors

M. Bishai, Purdue University
J. Fast, Purdue University
E. Gerndt, Purdue University
J. W. Hinson, Purdue University
R. L. McIlwain, Purdue University
T. Miao, Purdue University
D. H. Miller, Purdue University
M. Modesitt, Purdue University
D. Payne, Purdue University
E. I. Shibata, Purdue University
I. P.J. Shipsey, Purdue University
P. N. Wang, Purdue University
M. Battle, University of Rochester
J. Ernst, University of Rochester
L. Gibbons, University of Rochester
Y. Kwon, University of Rochester
S. Roberts, University of Rochester
E. H. Thorndike, University of Rochester
C. H. Wang, University of Rochester
J. Dominick, Southern Methodist University
M. Lambrecht, Southern Methodist University
S. Sanghera, Southern Methodist University
V. Shelkov, Southern Methodist University
T. Skwarnicki, Southern Methodist University
R. Stroynowski, Southern Methodist University
I. Volobouev, Southern Methodist University
G. Wei, Southern Methodist University
M. Artuso, Syracuse University
M. Gao, Syracuse University
M. Goldberg, Syracuse University
D. He, Syracuse University

Document Type

Article

Publication Date

5-11-1995

Abstract

We have measured the weak decay asymmetry parameters (αΛc) for two Λc+ decay modes. Our measurements are αΛc = -0.94-0.06-0.06+0.21+0.12 for the decay mode Λc+ → Λπ+ and αΛc = -0.45 ±0.31 ±0.06 for the decay mode Λc → Σ+ π0. By combining these measurements with the previously measured decay rates, we have extracted the parity-violating and parity-conserving amplitudes. These amplitudes are used to test models of nonleptonic charmed baryon decay. © 1995.

Recommended Citation

Bishai, M.; Fast, J.; Gerndt, E.; Hinson, J. W.; McIlwain, R. L.; Miao, T.; Miller, D. H.; Modesitt, M.; Payne, D.; Shibata, E. I.; Shipsey, I. P.J.; Wang, P. N.; Battle, M.; Ernst, J.; Gibbons, L.; Kwon, Y.; Roberts, S.; Thorndike, E. H.; Wang, C. H.; Dominick, J.; Lambrecht, M.; Sanghera, S.; Shelkov, V.; Skwarnicki, T.; Stroynowski, R.; Volobouev, I.; Wei, G.; Artuso, M.; Gao, M.; Goldberg, M.; and He, D., "Measurement of the decay asymmetry parameters in Λc⁺ → Λπ⁺ and Λc⁺ → Σ⁺π⁰" (1995). Physics Faculty Publications. 27.
https://digitalcommons.bowdoin.edu/physics-faculty-publications/27