This paper investigates when local cohomology modules have an annihilator that does not depend on the choice of ideal. Takahashi classified dominant resolving subcategories category finitely generated over a commutative Noetherian ring. We show his classification theorem describes annihilation results finite-dimensional ring with certain assumptions or Cohen-Macaulay

The implications of a negligible annihilation contribution in B → DK decays are reanalyzed and are shown to lead to no new constraints on the weak phase γ from color-allowed B → DK decays. A test of negligible annihilation is proposed in B → DK (or B → DK), and an application is presented in which γ can be determined from these processes (or corresponding B → DK decays) supplemented with isospi...

Measurements of positron-on-molecule annihilation have established that positrons attach to a variety of molecules via vibrational Feshbach resonances VFRs . These resonances, in turn, result in greatly enhanced positron annihilation rates beyond those expected in simple collisions. A recent paper J. A. Young and C. M. Surko, Phys. Rev. Lett. 99, 133201 2007 described experimental studies and a...

We study the effects of dark matter annihilation during and after the cosmic recombination epoch on the cosmic microwave background anisotropy, taking into account the detailed energy deposition of the annihilation products. It is found that a fairly stringent constraint on the annihilation cross section is imposed for TeV scale dark matter masses from WMAP observations.

This article presents theoretical arguments that certain virtual bound states carry the trace component of affine torsion. The motivation for this work is Einstein Cartan theory, which extends general relativity by including torsion to model intrinsic angular momentum, becoming more credible. author not aware any situation there evidence or substantial argument presence trace, except in continu...

Cosmic-ray positrons have long been considered a powerful probe of dark matter annihilation. In particular, myriad studies the unexpected rise in positron fraction debated its or pulsar origins. this paper, we instead examine potential for extremely precise measurements by AMS-02 to hard leptophilic candidates that do not spectral features similar bulk observed excess. Utilizing detailed cosmic...

This article presents an overview of current understanding of the interaction of low-energy positrons with molecules with emphasis on resonances, positron attachment, and annihilation. Measurements of annihilation rates resolved as a function of positron energy reveal the presence of vibrational Feshbach resonances VFRs for many polyatomic molecules. These resonances lead to strong enhancement ...

The decay and annihilation cross sections of dark matter particles may depend on the value of a chameleonic scalar field that both evolves cosmologically and takes different values depending on the local matter density. This possibility introduces a separation between the physics relevant for freeze-out and that responsible for dynamics and detection in the late universe. We investigate how suc...