Download Electroweak Physics at the LHC (Springer Tracts in Modern by Matthias U. Mozer PDF

By Matthias U. Mozer

The ebook discusses the hot experimental effects bought on the LHC that contain electroweak bosons. the implications are put into a suitable theoretical and historic context. The paintings will pay targeted recognition to the emerging topic of hadronically decaying bosons with excessive boosts, documenting the state of the art identity options and highlighting regular effects. The textual content isn't really constrained to electroweak physics within the strict feel, but in addition discusses using electroweak vector-bosons as software within the research of alternative topics in particle physics, similar to determinations of the proton constitution or the quest for brand spanking new unique debris. The e-book is especially like minded for graduate scholars, beginning their thesis paintings on issues that contain electroweak bosons, because the ebook offers a entire description of phenomena observable at present accelerators in addition to a precis of the main appropriate experimental concepts.

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Extra info for Electroweak Physics at the LHC (Springer Tracts in Modern Physics, Volume 267)

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Current simulation programs use more sophisticated methods to model the hadronization process. The most prominent of these are the Lund string model [23] and the cluster fragmentation model [24]. In the Lund string model, the outgoing quarks are connected by strings, representing the confined color fields between the quarks. Potential energy stored in the string is used to iteratively create quark-antiquark pairs, forming color-neutral hadrons. In this picture gluons are envisioned as kinks in the connecting color strings.

ATLAS Collaboration, Flavor tagging with track jets in boosted topologies with the ATLAS detector. Technical Report ATL-PHYS-PUB-2014-013, CERN, Geneva (2014) Chapter 4 EWK Bosons and QCD Many of the parameters of the electroweak interaction are known to high precision from previous experiments, particularly the LEP experiments and SLD [1, 2]. At the LHC there are natural limitations to the obtainable accuracy for such measurements due to the uncertainties inherent in the composite initial state of pp collisions.

At first sight this appears to introduce a large number of free parameters into the SM. However, through appropriate field redefinitions a majority of these parameters may be eliminated. The Yukawa term (Eq. 18) generates the fermion masses as it contains terms bilinear in the fermion fields. The fermion masses are encoded in the matrices G f and are free parameters in contrast to the W and Z boson mass, which are strictly related to the weak couplings and the Higgs field parameters. Off-diagonal elements of the G f induce oscillations between the fermion generations during free propagation.

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