11,267 research outputs found
B production at the LHC / QCD aspects
The LHC provides new opportunities to improve our understanding of the b
quark using high statistics data samples and the 14 TeV center-of-mass energy.
The prospects to measure the cross section for inclusive b production in events
containing jets and at least one muon are presented. Studies of detector
systematic effects and theoretical uncertainties are included. QCD aspects of
the beauty production are discussed.Comment: Moriond QCD 2007 conference proceeding
Normal-Superfluid Interface Scattering For Polarized Fermion Gases
We argue that, for the recent experiments with imbalanced fermion gases, a
temperature difference may occur between the normal (N) and the gapped
superfluid (SF) phase. Using the mean-field formalism, we study particle
scattering off the N-SF interface from the deep BCS to the unitary regime. We
show that the thermal conductivity across the interface drops exponentially
fast with increasing , where is the chemical potential imbalance.
This implies a blocking of thermal equilibration between the N and the SF
phase. We also provide a possible mechanism for the creation of gap
oscillations (FFLO-like states) as seen in recent studies on these systems.Comment: 4 pages, 3 figure
Quasi two-dimensional superfluid Fermi gases
We study a quasi two-dimensional superfluid Fermi gas where the confinement
in the third direction is due to a strong harmonic trapping. We investigate the
behavior of such a system when the chemical potential is varied and find strong
modifications of the superfluid properties due to the discrete harmonic
oscillator states. We show that such quasi two-dimensional behavior can be
created and observed with current experimental capabilities.Comment: In response to referee comments, minor changes from the earlier
versio
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