Using the factorization scheme for the nonleptonic D → V V 0 weak amplitudes , we classify all diagrams which arise in D → V γ decays and calculate them with the help of the hybrid model which combines the heavy quark effective theory and the chiral Lagrangian approach. Thus we determine the long distance contribution to the amplitudes of Cabibbo allowed and Cabibbo suppressed D → V γ decays. T...

Abstract The discovery of superconductivity in hole-doped infinite layer nickelates, R NiO 2 ( = Nd, Pr, La) has resulted sustained interest the field. A definitive picture low-energy many-body states not yet emerged. Here we provide insights into physics, based on our embedded dynamical mean-field theory calculations, and propose a correlation U )-temperature T ) phase diagram. key features ar...

We prove that the Omega measure, which considers all moments when assessing portfolio performance, is equivalent to the widely used Sharpe ratio under jointly elliptic distributions of returns. Portfolio optimization of the Sharpe ratio is then explored, with an active-set algorithm presented for markets prohibiting short sales. When asymmetric returns are considered, we show that the Omega mea...

An experimental method is demonstrated that allows determination of the ratio between the electric (E1) and magnetic (M1) transition dipole moments in the A-X band of OH, including their relative sign. Although the transition strengths differ by more than 3 orders of magnitude, the measured M1-to-E1 ratio agrees with the ratio of the ab initio calculated values to within 3%. The relative sign i...

The paper studies triangle centres and central lines of a suitable reference triangle. It derives formulas for the ratios of the distances between triangle centres along various central lines, including lines on which the Apollonius point, the centre of the Apollonius circle and the midpoint of the join of the two Brocard points lie. It identifies Eulerian lines, some already known, and some ne...

The availability of data on Bs decays to strange quasi-two-body final states, either with or without charmonium opens new possibilities for understanding different contributions of weak diagrams and in particular the relative contributions of tree and penguin diagrams. Corresponding Bd and Bs decays to charge conjugate final states are equal in the SU(3) symmetry limit and the dominant SU(3) br...

The phase between three-gluon and one-photon amplitudes in ψ(2S) and ψ(3770) decays is analyzed. 1 Motivations It has been known that in J/ψ decays, the three gluon amplitude a3g and one-photon amplitude aγ are orthogonal for the decay modes 10 (90◦) [1], 1−0− (106 ± 10)◦ [2], 0−0− (89.6 ± 9.9)◦ [3], 1−1− (138± 37)◦ [4] and NN (89± 15)◦ [5]. J. M. Gérard and J. Weyers [6] augued that this large...

We continue our study of the construction of analytical coefficients of the epsilon-expansion of hypergeometric functions and their connection with Feynman diagrams. In this paper, we apply the approach of obtaining iterated solutions to the differential equations associated with hypergeometric functions to prove the following result: Theorem 1: The epsilon-expansion of a generalized hypergeome...

We analyze the double radiative B-meson decays Bs → γγ and Bd → γγ in QCD factorization based on the heavy-quark limit mb ≫ ΛQCD. We systematically discuss the various contributions to these exclusive processes. The dominant effect arises from the magnetic-moment type transition b → s(d)γ where an additional photon is emitted from the light quark (one-particle reducible diagram). The contributi...

In this work we studied the two-dimensional ionization structure of the circumnuclear and extranuclear regions in a sample of six low−z Ultraluminous Infrared Galaxies using Integral Field Spectroscopy. The ionization conditions in the extranuclear regions of these galaxies (∼ 5−15 kpc) are typical of LINERs as obtained from the Veilleux-Osterbrock line ratio diagnostic diagrams. The range of o...