**
Rutgers University Department of Physics and Astronomy
**

#
David Harrington
- professional activities

## Related pages

## Position

Professor

## Group(s)

Theoretical nuclear physics

## Research Activities

Positive K-mesons are the most weakly
interacting of the strongly interacting particles. There is a
still unexplained discrepancy between experiment and theory,
however, for their interaction with nuclei. One possible
explanation involves meson exchange currents. I am trying to
check some of the assumptions that go into the calculation of
these contributions by looking at their effects in large-angle
scattering from deuterons where they may dominate other
contributions to the cross section. I am also trying to see if
accurate measurements of the total cross sections for scattering
of high-energy nucleons and pions from a range of heavy nuclei can
be used to distinguish among different models describing the
composite nature of these particles. With certain approximations
each of these models corresponds to a prescription for a cross-
section distribution function which specifies the probability that
the particle is in a configuration which will interact with a
nucleon with a given total cross section. Fluctuations between
states of different cross sections decrease the total cross
sections on heavy nuclei by an amount depending on the model used.

Please send any comments on this page to David Harrington, drharr@physics.rutgers.edu.
Revised September 28, 1995