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100 papers · 1 filter
Charmonium Spectroscopy from Lattice QCD
Carleton DeTar
I give a short review of the current status of lattice QCD calculations of the spectrum of charmonium.
Extension theorems, Non-vanishing and the existence of good minimal models
Jean-Pierre Demailly, Christopher D. Hacon, Mihai Paun
We prove an extension theorem for effective plt pairs of non-negative Kodaira dimension . The main new ingredient is a refinement of the Ohsawa-Takegosh…
Spectral Energy Distribution of Markarian 501: Quiescent State vs. Extreme Outburst
The VERITAS Collaboration, V. A. Acciari, T. Arlen +225
The very high energy (VHE; E > 100 GeV) blazar Markarian 501 has a well-studied history of extreme spectral variability and is an excellent laboratory for studying the physical pro…
Simulations with dynamical HISQ quarks
A. Bazavov, C. Bernard, C. DeTar +11
We report on the status of a program of generating and using configurations with four flavors of dynamical quarks, using the HISQ action. We study the lattice spacing dependence of…
Variability selected high-redshift quasars on SDSS Stripe 82
N. Palanque-Delabrouille, Ch. Yeche, A. D. Myers +11
The SDSS-III BOSS Quasar survey will attempt to observe z>2.15 quasars at a density of at least 15 per square degree to yield the first measurement of the Baryon Acoustic Oscillati…
Charm annihilation effects on the hyperfine splitting in charmonium
L. Levkova, C. DeTar
In calculations of the hyperfine splitting in charmonium, the contributions of the disconnected diagrams are considered small and are typically ignored. We aim to estimate nonpertu…