Weak Decay of CΛ12 and BΛ11 Hypernuclei

R. Grace, P. D. Barnes, R. A. Eisenstein, G. B. Franklin, C. Maher, R. Rieder, J. Seydoux, J. Szymanski, W. Wharton, S. Bart, R. E. Chrien, P. Pile, Y. Xu, R. Hackenburg, E. Hungerford, B. Bassalleck, M. Barlett, E. C. Milner, and R. L. Stearns
Phys. Rev. Lett. 55, 1055 – Published 2 September 1985
PDFExport Citation

Abstract

A measurement is reported of the mean lifetime, τ, for the weak decay of CΛ12 and BΛ11 hypernuclei. The experiment detected energetic protons from the hypernuclear nonmesonic decay Λ+pn+p, in coincidence with hypernuclear production by the strangeness-changing reactions C12(K, π)CΛ12 and C12(K, π)p, BΛ11. The measured ground-state decay lifetimes τ(CΛ12)=(2.11±0.31)×1010 sec and τ(BΛ11)=(1.92±0.22)×1010 sec are compared with ΛN weak-interaction calculations.

  • Received 9 May 1985

DOI:https://doi.org/10.1103/PhysRevLett.55.1055

©1985 American Physical Society

Authors & Affiliations

R. Grace, P. D. Barnes, R. A. Eisenstein*, G. B. Franklin, C. Maher, R. Rieder, J. Seydoux, J. Szymanski, and W. Wharton

  • Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213

S. Bart, R. E. Chrien, P. Pile, and Y. Xu

  • Brookhaven National Laboratory, Upton, New York 11973

R. Hackenburg and E. Hungerford

  • University of Houston, Houston, Texas 77004

B. Bassalleck

  • University of New Mexico, Albuquerque, New Mexico 87131

M. Barlett and E. C. Milner

  • University of Texas, Austin, Texas 78712

R. L. Stearns

  • Vassar College, Poughkeepsie, New York 12601

  • *Present address: Nuclear Physics Laboratory, University of Illinois, Champaign, Ill. 61820.
  • Present address: Physics Department, Wheaton College, Wheaton, Ill. 60187.

References (Subscription Required)

Click to Expand
Issue

Vol. 55, Iss. 10 — 2 September 1985

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×