Speaker
Yury Kolomensky
(UC Berkeley/LBNL)
Description
The nature of dark matter is a challenge to both astrophysics and
collider physics. Dark matter may have both heavy and light
constituents, much like the normal matter described by the Standard
Model. We present a search for decay of the Y(1S) meson into undetectable
final states, using a sample of 98 million Y(3S) mesons collected at
the PEP-II/BaBar B-factory. We tag the decay of the Y(3S) into
the Y(1S) through a pair of charged pions, and measure the rate at
which the Y(1S) decays into particles which do not interact with
the BaBar detector.
Author
Yury Kolomensky
(UC Berkeley/LBNL)
