Monograph records
https://feeds.library.caltech.edu/people/Wise-M-B/monograph.rss
A Caltech Library Repository Feedhttp://www.rssboard.org/rss-specificationpython-feedgenenThu, 30 Nov 2023 18:42:00 +0000Primordial Non-Gaussianity
https://resolver.caltech.edu/CaltechAUTHORS:20190925-095718211
Authors: Meerburg, P. Daniel; Doré, Olivier; Schillaci, Alessandro; Wise, Mark
Year: 2019
DOI: 10.48550/arXiv.1903.04409
Our current understanding of the Universe is established through the pristine measurements of structure in the cosmic microwave background (CMB) and the distribution and shapes of galaxies tracing the large scale structure (LSS) of the Universe. One key ingredient that underlies cosmological observables is that the field that sources the observed structure is assumed to be initially Gaussian with high precision. Nevertheless, a minimal deviation from Gaussianityis perhaps the most robust theoretical prediction of models that explain the observed Universe; itis necessarily present even in the simplest scenarios. In addition, most inflationary models produce far higher levels of non-Gaussianity. Since non-Gaussianity directly probes the dynamics in the early Universe, a detection would present a monumental discovery in cosmology, providing clues about physics at energy scales as high as the GUT scale.https://authors.library.caltech.edu/records/xkjyn-3a467Quark model predictions for the electron energy spectrum in seileptonic D and B decays
https://resolver.caltech.edu/CaltechAUTHORS:20200928-162217927
Authors: Grinstein, Benjamin; Wise, Mark B.; Isgur, Nathan
Year: 2020
The constituent quark model is used to predict the electron
energy spectrum in semileptonic D and B meson decays. Particular attention is paid to the endpoint region of the electron spectrum in B decays since this is crucial to a determination of the b --> u weak mixing angle.https://authors.library.caltech.edu/records/ymxmv-zgj73Observing the de Sitter Space Propagator
https://resolver.caltech.edu/CaltechAUTHORS:20200928-145738934
Authors: Wise, Mark B.
Year: 2020
The primordial fluctuations in the mass density may have arisen from quantum fluctuations in a scalar field that occurred during an inflationary era. Fluctuations which arose in this way can be highly non-Gaussian. Also the bad infrared properties of the propagator for a massless scalar field in de Sitter space can translate itself into a power spectrum, for the two-point spatial correlation of objects that do not trace the mass, which behaves like K^(-3), at small wavenumbers k.https://authors.library.caltech.edu/records/71nn4-pmg94Weak radiative B meson decay
https://resolver.caltech.edu/CaltechAUTHORS:20200929-143446928
Authors: Springer, Roxanne; Wise, Mark B.; Grinstein, Benjamín
Year: 2020
Weak radiative B meson decays, Bγ -> γX_s have a B meson decaying to a hard photon (i.e., Eγ ≥ 2 GeV) and strange hadronic final states X_s. The prediction of the standard model (with minimal particle content) for the rate for this process is reviewed. Particular attention is paid to the role of strong interaction corrections, which have a significant impact on the rate.https://authors.library.caltech.edu/records/br92v-fth16Chiral perturbation theory and the delta I = 1/2 rule
https://resolver.caltech.edu/CaltechAUTHORS:20200928-170836480
Authors: Bernard, Claude W.; Draper, Terrence; Soni, A.; Politzer, H. David; Wise, Mark B.
Year: 2020
Chiral perturbation theory is applied to the decay K π 2π. It is shown that, to quadratic order-in meson masses, the amplitude for K → 2π can be written in terms of the unphysical amplitudes K + π and K + 0, where "0" is the vacuum. One may then hope to calculate these two simpler amplitudes with lattice Monte Carlo techniques, and thereby gain understanding of the ΔI = 1/2 rule in K decay. The reason for the presence of the K → 0 amplitude is explained: it serves to cancel off unwanted renormalization contributions to K + π. We make a rough rest of the practicability of these ideas to Monte Carlo studies. We also describe a method for evaluating meson decay constants which does not require a determination of the quark masses.https://authors.library.caltech.edu/records/27zhe-ppt76