A promising avenue to perform precision tests of the SM at the LHC is to measure differential cross-sections at high invariant mass, exploiting in this way the growth with the energy of the corrections induced by heavy new physics. We classify the leading growing-with-energy effects in longitudinal diboson and in associated Higgs production processes, showing that they can be encapsulated in four real âhigh-energy primaryâ parameters. We assess the reach on these parameters at the LHC and at future hadronic colliders, focusing in particular on the fully leptonic W Z channel that appears particularly promising. The reach is found to be superior to existing constraints by one order of magnitude, providing a test of the SM electroweak sector at the per-mille level, in competition with LEP bounds. Unlike LHC run-1 bounds, which only apply to new physics effects that are much larger than the SM in the high-energy tail of the distributions, the probe we study applies to a wider class of new physics scenarios where such large departures are not expected.
|Titolo:||Electroweak precision tests in high-energy diboson processes|
|Data di pubblicazione:||2018|
|Citazione:||Franceschini, R., Panico, G., Pomarol, A., Riva, F., & Wulzer, A. (2018). Electroweak precision tests in high-energy diboson processes. JOURNAL OF HIGH ENERGY PHYSICS, 2018(2).|
|Appare nelle tipologie:||1.1 Articolo in rivista|