106 citations · 160 across the 10 of their papers we have counts for
10 papers
Cross-Section Fluctuations in Chaotic Scattering Systems
Torleif Ericson, Barbara Dietz, Achim Richter
Exact analytical expressions for the cross-section correlation functions of chaotic scattering sys- tems have hitherto been derived only under special conditions. The objective of…
Structure of Amplitude Correlations in open chaotic Systems
Torleif E. O. Ericson
An analytical approximation is found for the Verbaarschot-Weidenmueller-Zirnbauer solution. Its structure is discussed. The VWZ model is believed to correctly represent the correla…
Isospin Violation in Pion-Nucleon Scattering at Threshold
T. E. O. Ericson
We discuss the electromagnetic corrections to the pion-nucleon scattering lengths generated by minimal e. m. coupling from a knowledge of the low energy expansion of the pion-nucle…
Isospin breaking in pion-nucleon scattering at threshold by radiative processes
T. E. O. Ericson, A. N. Ivanov
We investigate the dispersive contribution by radiative processes such as (pi- proton to neutron gamma) and (pi- proton to Delta gamma) to the pion-nucleon scattering lengths of ch…
A phenomenological determination of the pion-nucleon scattering lengths from pionic hydrogen
T. E. O. Ericson, B. Loiseau, S. Wycech
A model independent expression for the electromagnetic corrections to a phenomenological hadronic pion-nucleon scattering length, extracted from pionic hydrogen, is obtained. In a…
A phenomenological negatively charged pion-proton scattering length from pionic hydrogen
T. E. O. Ericson, B. Loiseau, S. Wycech
We derive a closed, model independent, expression for the electromagnetic correction factor to a phenomenological hadronic scattering length extracted from a hydrogenic atom. It is…
Determination of the pion-nucleon coupling constant and scattering lengths
T. E. O. Ericson, B. Loiseau, A. W. Thomas
We critically evaluate the isovector GMO sum rule for forward pion-nucleon scattering using the recent precision measurements of negatively charged pion-proton and pion-deuteron sc…
How precisely can we determine the pion-nucleon coupling constant from the isovector GMO sum rule?
B. Loiseau, T. E. O. Ericson, A. W. Thomas
The isovector GMO sum rule for zero energy forward pion-nucleon scattering is critically studied to obtain the charged pion-nucleon coupling constant using the precise negatively c…
The Pion-Nucleon coupling constant from np charge exchange scattering
B. Loiseau, T. E. O. Ericson, J. Rahm +2
A novel extrapolation method has been used to deduce the charged Pion-Nucleon coupling constant from backward differential scattering cross sections. We applied it to new meas…
Pion and neutron production by cosmic-ray muons underground
Jean Delorme, Magda Ericson, Torleif Ericson
The production of positive pions and neutrons by cosmic muons at underground sites of various depths is investigated. We first test the equivalent photon method in the particular c…