[Review of] Bill Ong Hing. Making and Remaking Asian America Through Immigration Policy

Bill Ong Hing\u27s book has fulfilled a long-felt need in Asian American studies. Since the publication of Milton R. Konvitz\u27s The Alien and Asiatic in American Law (1946), no comprehensive overview of how American immigration policy influenced Asian immigration has been published. The subject, however, represents one of the most important aspects of Asian American experience. Historically, the anti-Asiatic Exclusion Laws played a defining role in the evolution of Asian America. Today, the legacy of racist immigration policies continue to limit Asian Americans, and the current debate over immigration remains an issue of great importance for the communities

Next-to-leading order QCD corrections to the single top quark production via model-independent t-q-g flavor-changing neutral-current couplings at hadron colliders

We present the calculations of the complete next-to-leading order (NLO) QCD effects on the single top productions induced by model-independent $tqg$ flavor-changing neutral-current couplings at hadron colliders. Our results show that, for the $tcg$ coupling the NLO QCD corrections can enhance the total cross sections by about 60% and 30%, and for the $tug$ coupling by about 50% and 20% at the Tevatron and LHC, respectively, which means that the NLO corrections can increase the experimental sensitivity to the FCNC couplings by about 10%$-$30%. Moreover, the NLO corrections reduce the dependence of the total cross sections on the renormalization or factorization scale significantly, which lead to increased confidence on the theoretical predictions. Besides, we also evaluate the NLO corrections to several important kinematic distributions, and find that for most of them the NLO corrections are almost the same and do not change the shape of the distributions.Comment: minor changes, version published in PR

Diphoton excess at 750 GeV: gluon-gluon fusion or quark-antiquark annihilation?

Recently, ATLAS and CMS collaboration reported an excess in the diphoton events, which can be explained by a new resonance with mass around 750 GeV. In this work, we explored the possibility of identifying if the hypothetical new resonance is produced through gluon-gluon fusion or quark-antiquark annihilation, or tagging the beam. Three different observables for beam tagging, namely the rapidity and transverse momentum distribution of the diphoton, and one tagged bottom-jet cross section, are proposed. Combining the information gained from these observables, a clear distinction of the production mechanism for the diphoton resonance is promising.Comment: 20 pages, 7 figure