Elastic scattering of charged pions from 3H and 3He

W. J. Briscoe, B. L. Berman, R. W. C. Carter, K. S. Dhuga, S. K. Matthews, N-J. Nicholas, S. J. Greene, B. M. K. Nefkens, J. W. Price, L. D. Isenhower, M. E. Sadler, I. Šlaus, and I. Supek
Phys. Rev. C 66, 054006 – Published 27 November 2002
PDFExport Citation

Abstract

We have measured the ratios of normalized yields for the elastic scattering of charged pions from 3H and3He in the backward hemisphere. At Tπ=180MeV, we have completed the angular distribution measured earlier, adding six new data points in the angular range from 119° to 169° in the π-nucleus center of mass. We also measured an excitation function with data points at Tπ=142, 180, 220, and 256 MeV at the largest angle achievable with our detector—between 160° and 170° in the π-nucleus center of mass. The data, taken as a whole, show an apparent role reversal of the two charge-symmetric ratios r1 and r2 in the backward hemisphere. For data >~100° we observe a strong dependence of the ratios on t, independent of Tπ or θπ. The superratio R data match very well with calculations based on the forward-hemisphere data that predict the value of the difference between the even-nucleon radii of 3H and3He. Comparisons are also made with recent calculations incorporating different wave functions and double-scattering models.

  • Received 22 April 2002

DOI:https://doi.org/10.1103/PhysRevC.66.054006

©2002 American Physical Society

Authors & Affiliations

W. J. Briscoe, B. L. Berman, R. W. C. Carter*, K. S. Dhuga, S. K. Matthews, and N-J. Nicholas

  • Center for Nuclear Studies, Department of Physics, The George Washington University, Washington D.C. 20052

S. J. Greene

  • Los Alamos National Laboratory, Los Alamos, New Mexico 87545

B. M. K. Nefkens and J. W. Price

  • Department of Physics, University of California at Los Angeles, Los Angeles, California 90095

L. D. Isenhower and M. E. Sadler

  • Department of Physics, Abilene Christian University, Abilene, Texas 79699

I. Šlaus and I. Supek

  • Rudjer Bošković Institute, Zagreb, Croatia

  • *Present address: 1627 Camden Ave., No. 307, Los Angeles, CA 90025.
  • Present address: Oregon Hearing Research Center, Oregon Health Science University, Portland, OR 97201-3098.
  • Present address: Advanced Nuclear Technology Group (NIS-6), MS J562, Nonproliferation and International Security Division, LANL, Los Alamos, NM 87545.

References (Subscription Required)

Click to Expand
Issue

Vol. 66, Iss. 5 — November 2002

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 C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×