Tuesday, February 14, 2012

1111.1984 (Ionel Lazanu et al.)

Interactions of exotic particles with ordinary matter    [PDF]

Ionel Lazanu, Sorina Lazanu
Weakly interacting massive particles (WIMPs) and strangelets are two classes
of "exotic" particles not yet discovered, and in agreement with theoretical
scenarios most probably produced in different early stages of evolution of the
Universe. Some peculiarities of their energy loss in the electronic and nuclear
interactions with ordinary matter are investigated. For the direct detection of
WIMPs the signals produced by the stopping of recoils in matter are used for
their identification. The influence of the orientation of the recoil in respect
to crystal axes for crystalline silicon (as material for detectors) is analysed
as average quantities: energy loss, and as transient thermal effects. For
strangelets, the mechanisms of picking-up neutrons during their penetration
into matter and the effects on electronic and nuclear stopping are considered.
The clarification of the aspects related to the stopping of these hypothetical
particles in matter will permit a better interpretation of some experimental
results and could also contribute to the search for new techniques or materials
for their detection, if they exist.
View original: http://arxiv.org/abs/1111.1984

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