Deeply Bound $1 s$ and $2 p$ Pionic States in ${}^{205}P b$ and Determination of the $s$ -Wave Part of the Pion-Nucleus Interaction

Publisher Website

11 March 2002

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 88 (12) , 122301
https://doi.org/10.1103/physrevlett.88.122301

Abstract

We observed well-separated

1 s

and

2 p

π^{-}

states in

^{205} Pb

in the

^{206} Pb ({d,}^{3} He)

reaction at

T_{d} = 604.3 MeV

. The binding energies and the widths determined are

B_{1 s} = 6.762 \pm 0.061 MeV

,

Γ_{1 s} = {0.764}_{- 0.154}^{+ 0.171} MeV

,

B_{2 p} = 5.110 \pm 0.045 MeV

, and

Γ_{2 p} {= 0.321}_{- 0.062}^{+ 0.060} MeV

. They are used to deduce the real and imaginary strengths of the

s

-wave part of the pion-nucleus interaction, which translates into a positive mass shift of

π^{-}

in

^{205} Pb

.

Keywords

This publication has 20 references indexed in Scilit:

The GSI projectile fragment separator (FRS): a versatile magnetic system for relativistic heavy ions
Published by Elsevier ,2002
Deeply bound $π^{-}$ states in $^{207} Pb$ formed in the $^{208} Pb {(d,}^{3} He)$ reaction. II. Deduced binding energies and widths and the pion-nucleus interaction
Physical Review C, 2000
Deeply bound $π^{-}$ states in $^{207} Pb$ formed in the $^{208} Pb {(d,}^{3} He)$ reaction. I. Experimental method and results
Physical Review C, 2000
Effective pion mass in the nuclear medium deduced from deeply bound pionic states in 207Pb
Physics Letters B, 1998
Formation of deeply bound $1 s$ pionic states in the $^{206} Pb {(d,}^{3} He)$ reaction
Physical Review C, 1997
(d $,^{3}$ He) reactions for the formation of deeply bound pionic atoms
Physical Review C, 1991
Pion-transfer (n, d) and (d, 3He) reactions leading to deeply bound pionic atoms
Nuclear Physics A, 1991
Structure and formation of deeply-bound pionic atoms
Nuclear Physics A, 1989
Deeply bound pionic states of heavy nuclei
Physics Letters B, 1988
Calculations of deeply bound pionic states in heavy and superheavy atoms
Journal of Physics G: Nuclear Physics, 1985