A Precision Model Independent Determination of |Vub| from B -> pi e nu

A precision method for determining |Vub| using the full range in q^2 of B-> pi \ell nu data is presented. At large q^2 the form factor is taken from unquenched lattice QCD, at q^2=0 we impose a model independent constraint obtained from B-> pi pi using the soft-collinear effective theory, and the shape is constrained using QCD dispersion relations. We find |Vub| =(3.54\pm 0.17\pm 0.44) x 10^{-3}. With 5% experimental error and 12% theory error, this is competitive with inclusive methods. Theory error is dominated by the input points, with negligible uncertainty from the dispersion relations.Comment: 4 pages, 3 figure

The Yellow Figment of East Asian American Women: A Case Study of the 2021 Atlanta Spa Shootings

This paper explores how mainstream media frames the racial gendering of Asian women through a case study of the 2021 Atlanta Spa Shootings. Fifteen articles sourced from the top ten national newspaper entities published between March 16th, 2021 and October 2021 analyze how Asian American women are subjected to at least a double feminized social location on account of their race and gender within a U.S. contemporary context. I explore how themes of race, gender, and hyper-sexualization intersect to produce the archetype of Asian women as exotic, docile temptresses. This analysis centers around the dynamic between Asian women and White men positioned within a heterosexual matrix. My findings discuss how the fetishization of Asian women foregrounded the targeted attack on three Asian spas and six female Asian lives. Moreover, the influence of racial gendering of Asian women motivates the “exotic” desire for Asian women, commonly denoted as complimentary, while simultaneously legitimizing their bodies as disposable vessels for White male rage. Finally, I discuss the implications yellow fever for Asian women within the domain of attraction and desire exposing them to sexual, physical, and symbolic violence expressed as fetishization

On the Convergence of Ritz Pairs and Refined Ritz Vectors for Quadratic Eigenvalue Problems

For a given subspace, the Rayleigh-Ritz method projects the large quadratic eigenvalue problem (QEP) onto it and produces a small sized dense QEP. Similar to the Rayleigh-Ritz method for the linear eigenvalue problem, the Rayleigh-Ritz method defines the Ritz values and the Ritz vectors of the QEP with respect to the projection subspace. We analyze the convergence of the method when the angle between the subspace and the desired eigenvector converges to zero. We prove that there is a Ritz value that converges to the desired eigenvalue unconditionally but the Ritz vector converges conditionally and may fail to converge. To remedy the drawback of possible non-convergence of the Ritz vector, we propose a refined Ritz vector that is mathematically different from the Ritz vector and is proved to converge unconditionally. We construct examples to illustrate our theory.Comment: 20 page

Concerns Affecting Computer Usage by County Extension Educators in Florida

The Florida Cooperative Extension Service continues to develop and provide information to extension educators and their clientele via computer

Power Corrections in Charmless Nonleptonic B-Decays: Annihilation is Factorizable and Real

We classify LambdaQCD/mb power corrections to nonleptonic B-> M1 M2 decays, where M1 and M2 are charmless non-isosinglet mesons. Using recent developments in soft-collinear effective theory, we prove that the leading contributions to annihilation amplitudes of O[alphas(mb) LambdaQCD/mb] are real and are determined by nonperturbative functions that already occur in the lowest order B-> M1 M2 factorization theorem. A complex nonperturbative parameter from annihilation first appears at O[alphas^2(sqrt{Lambda mb}) LambdaQCD/mb]. ``Chirally enhanced'' contributions are also factorizable and real at lowest order. Thus, incalculable strong phases are suppressed in annihilation amplitudes, unless the alphas(sqrt{Lambda mb}) expansion breaks down. Modeling the distribution functions, we find that (11 +- 9)% and (15 +- 11)% of the absolute value of the measured B-> K- pi+ and B-> K- K0 penguin amplitudes come from annihilation. This is consistent with the expected size of power corrections