Fugitive World-Building

Plaetzer, Niklas

doi:10.4324/9780429463136-10

Cited by 1 publication

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“…Due to the lack of a detailed calculation describing the non-perturbative sphaleron-induced processes differentially, we distribute the particles uniformly in the available phase space. Two methods are particularly suited to the sampling of "flat" phase space at high multiplicities: the RAMBO [40] algorithm as described in [41], and the MAMBO algorithm according to [42]. The former was found to be inefficient for large numbers of massive particles, 8 and therefore for all the phenomenological studies of the present article we have employed the MAMBO algorithm.…”

Section: Phase Space Generation and Integrationmentioning

confidence: 99%

On the phenomenology of sphaleron-induced processes at the LHC and beyond

Papaefstathiou

Plätzer

Sakurai

2019

J. High Energ. Phys.

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We investigate the phenomenological aspects of non-perturbative baryon-and lepton-number-violating processes at hadron colliders. Such processes, induced by instanton/sphaleron configurations of the electroweak gauge fields, are believed to play a crucial role in the generation of baryon asymmetry in the early Universe at finite temperature. On the other hand, at colliders (that represent the zero-temperature high-energy regime) the rate and observability of such processes are still under debate. Motivated by current theoretical considerations, we construct a modern event generator within the general-purpose Herwig Monte Carlo framework, that aims to capture the most relevant features of the dominant processes. We perform a detailed phenomenological analysis focussing on the Large Hadron Collider, at 13 TeV proton-proton centre-of-mass energy, a potential highenergy upgrade at 27 TeV and the proposed Future Circular Collider (FCC-hh) at 100 TeV. We derive constraints on the expected rates for various parametrisations of our model. We find that all three colliders are capable of providing meaningful information on the nature of instanton/sphaleron-induced processes at various energy scales.

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Section: Phase Space Generation and Integrationmentioning

confidence: 99%