Testing in-medium πN dynamics on pionic atoms - INSPIRE

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Testing in-medium πN dynamics on pionic atoms

E. Friedman
(
- Hebrew U.
)
,
A. Gal
(
- Hebrew U.
)

May 28, 2014

10 pages

Part of Proceedings, 45 Years of Nuclear Theory at Stony Brook: A Tribute to Gerald E. Brown : Stony Brook, NY, USA, November 24-26, 2013, 128-137

Published in:

Nucl.Phys.A 928 (2014) 128-137

Contribution to:

45 YEARS OF NUCLEAR THEORY at STONY BROOK: A TRIBUTE TO GERALD E. BROWN, 128-137

Published: Aug, 2014

e-Print:

1405.7133 [nucl-th]

DOI:

10.1016/j.nuclphysa.2014.05.017

View in:

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Abstract: (Elsevier)

A general algorithm for handling the energy dependence of meson–nucleon amplitudes in the nuclear medium has been recently applied to antikaons and to eta mesons. Here we test this approach on πN amplitudes in pionic atoms where direct comparison can be made with ample experimental results. Applying this algorithm to a large-scale fit of 100 pionic-atom data points across the periodic table, which also include the ‘deeply-bound’ states in Sn and Pb, reaffirms earlier conclusions on the density-dependent renormalization of the πN threshold isovector amplitude b1 , or equivalently the renormalization of the pion decay constant fπ in the nuclear medium.

Note:

V2 minor rephrasing, 15 pages, 3 figures, to be published in Nuclear Physics A special issue in memory of Gerry Brown

Pion–nucleon in-medium interaction
Energy dependence
Pionic atoms
pi-: mesic atom
pi: decay constant
renormalization
nuclear matter
experimental results
density dependence
energy dependence

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Figures(4)

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