The strangeness-changing (∆S = 1) weak baryon-baryon interaction is studied through the nonmesonic weak decay of double-Λ hypernuclei. Besides the usual nucleon-induced decay ΛN → NN we discuss novel hyperon-induced decay modes ΛΛ → ΛN and ΛΛ → ΣN . These reactions provide unique access to the exotic ΛΛK and ΛΣK vertices which place new constraints on Chiral Pertubation Theory (χPT) in the weak...

The formation of intermolecular bonds in C₆₀ has been investigated in detail at pressures below 2.2 GPa and up to 750 K. Fullerene samples were heated in a temperature gradient to obtain data on the formation of dimers and low-dimensional polymers along isobars. Intermolecular bonding was analyzed ex situ by Raman scattering, using both intramolecular modes and intermolecular stretching modes. ...

We report inelastic light scattering studies on Ca(Fe0.97Co0.03)2As2 in a wide spectral range of 120-5200 cm( - 1) from 5 to 300 K, covering the tetragonal to orthorhombic structural transition as well as magnetic transition at Tsm ~ 160 K. The mode frequencies of two first-order Raman modes B1g and Eg, both involving the displacement of Fe atoms, show a sharp increase below Tsm. Concomitantly,...

We investigate the nonlinear coupling between the so-called explicit modes, identified with wave numbers k such that 0< or =k< or =k(c), and implicit modes, defined such that k(c)< or =k< or =k(max). Here k(c) is an arbitrarily chosen cutoff wave number and k(max) is the ultraviolet cutoff as determined by viscous damping. The stresses arising from the nonlinearity in the Navier-Stokes equation...

We have experimentally demonstrated the broadband enhancement of single-photon emission from nanodiamond NV centers coupled to planar multilayer metamaterial with hyperbolic dispersion. A tapered metamaterial waveguide for efficient outcoupling of high-k metamaterial modes has been numerically studied and fabricated. Introduction: The major thrust of research in quantum photonics is to build qu...

Citation Aaij, R., B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, et al. “Study of CP Violation in B[superscript ] Dh[superscript ] (h = K,) with the Modes D K[superscript ][superscript ±][superscript 0], D [superscript +][superscript ][superscript 0] and D K[superscript +]K[superscript ][superscript 0].” Physical Review D 91, no. 11 (June 26, 2015). © 2015 CERN, for th...

A high statistics sample of photoproduced charm particles from the FOCUS (E831) experiment at Fermilab has been used to search for CP violation in the Cabibbo suppressed decay modes D+ → K−K+π+, D0 → K−K+ and D0 → π−π+. We have measured the following CP asymmetry parameters: ACP (K −K+π+) = +0.006± 0.011± 0.005, ACP (K −K+) = −0.001± 0.022± 0.015 and ACP (π −π+) = +0.048 ± 0.039 ± 0.025 where t...

We calculate the four-wave-mixing signal of excitons generated at k(4) = k(1) + k(2) - k(3) by two pulsed entangled photon pairs (k(1), k(2))and(k(3), k(4)), where all four modes are chronologically ordered. Entangled photons offer an unusual combination of bandwidths and temporal resolution not possible by classical beams. Contributions from different resonances can be selected by varying the ...

While mainstream symmetric cryptography has been dominated by block ciphers, we have proposed an alternative based on fixed-width permutations with modes built on top of the sponge and duplex construction, and our concrete proposal K . Our permutationbased approach is scalable and suitable for high-end CPUs as well as resource-constrained platforms. The la er is illustrated by the small K insta...

The transmission properties of one dimensional Photonic Crystals (PCs) with two defects having structures (HL) n (D1LD2L) m (HL) n, where m is the stack number of the Photonic Quantum Well (PQW) have been theoretically investigated by the transfer matrix method. The thickness and temperature dependence of the defect modes have been studied by considering Si and air as the high and low refractiv...