8,353 research outputs found
Diffractive photoproduction of heavy quarks in hadronic collisions
In this letter we study the diffractive photoproduction of heavy quarks in
hadronic (pp/pA/AA) interactions for Tevatron and LHC energies. The integrated
cross section and rapidity distribution for the process h_1 h_2 --> h_1 h_2
QQBAR (h_i = p,A and Q = c,b) are estimated using the Color Glass Condensate
(CGC) formalism. Our results indicate that this production channel has larger
cross sections than the competing reactions of double diffractive production
and coherent AA reactions initiated by two-photon collisions.Comment: 4 pages, 2 figures, 1 table. Version to be published in Physical
Review
Plasmon-exciton polaritons in 2D semiconductor/metal interfaces
The realization and control of polaritons is of paramount importance in the
prospect of novel photonic devices. Here, we investigate the emergence of
plasmon-exciton polaritons in hybrid structures consisting of a two-dimensional
(2D) transition metal dichalcogenide (TMDC) deposited onto a metal substrate or
coating a metallic thin-film. We determine the polaritonic spectrum and show
that, in the former case, the addition of a top dielectric layer, and, in the
latter, the thickness of the metal film,can be used to tune and promote
plasmon-exciton interactions well within the strong coupling regime. Our
results demonstrate that Rabi splittings exceeding 100 meV can be readily
achieved in planar dielectric/TMDC/metal structures under ambient conditions.
We thus believe that this work provides a simple and intuitive picture to
tailor strong coupling in plexcitonics, with potential applications for
engineering compact photonic devices with tunable optical properties.Comment: 6 pages, including 5 figures and reference
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