Speaker
B. Ananthanarayan
(IISc, Bangalore)
Description
We approach the issue of the discovery of new physics at high energies associated
with the proposed International Linear Collider in the presence of longitudinal as
well as transverse electron and positron beam polarization. We determine the beam
polarization dependence and the angular distribution of a particle of arbitrary spin
in a one-particle inclusive final state produced in e+e- collisions through the
interference of photon or Z amplitude with the amplitude from new interactions having
arbitrary space-time structure. We thus extend the results of Dass and Ross proposed
at the time of the discovery of neutral currents, to beyond the standard model
currents. We also extend the case of e+ e- annihilation in the s-channel to the
production of bosons due to t- and u-channel processes. Our work provides an approach
to model-independent determination of the space-time structure of beyond the standard
model interactions. We briefly discuss applications of the framework to popular
extensions of the standard model, and demonstrate that our framework is general
enough to account for certain results in the minimal supersymmetric standard model.
We briefly remark on work in progress when more than one final state momentum and
when final state spin are also detected.
Author
B. Ananthanarayan
(IISc, Bangalore)
