Status and Implications of Beyond-the-Standard-Model Searches at the LHC

Abstract

The LHC has collided protons on protons at center-of-mass energies of 7 and 8 TeV between 2010 and 2012, referred to as the Run I period. We review the current status of searches for new physics beyond the Standard Model at the end of Run I by the ATLAS and CMS experiments, limited to the 8-TeV search results that have been published or submitted for publication as of the end of February 2014. We discuss some of the implications of these searches on the existence of TeV-scale new physics, with a special focus on two open questions: the hierarchy problem and the nature of dark matter. Finally, we give an outlook for the future.

Lattice tests of beyond standard model dynamics

“…That value is in the range of LHC searches, and, so far, they have not been seen. (Halkiadakis et al (2014) has limits. )…”

“…Direct searches for new heavy particles also constrain new physics. (See Halkiadakis et al (2014) for a recent summary.) The situation involving the rest of the Standard Model can be described in a few sentences: The most obvious manifestations of new physics in the low energy sector of the Standard Model occur in the vacuum polarization of the SU (2) × U (1) gauge bosons (Altarelli and Barbieri, 1991;Peskin andTakeuchi, 1990, 1992).…”

A review of the discovery reach of directional Dark Matter detection

“…Several WIMP detection techniques have been proposed and are being pursued. Searches for laboratory-created WIMPs are ongoing at the Large Hadron Collider [7], as are attempts to detect Standard Model particles produced by WIMP annihilation in our own and extragalactic Dark Matter halos [8]. Direct detection experiments aim to detect Galactic halo WIMPs streaming through terrestrial detectors, via their elastic scattering off target nuclei.…”

Rare b Hadron Decays at the LHC

“…As evidence for these new particles has not been found in Run I, limits on the masses of these particles have been pushed into the TeV range [71]. To keep the relation to the weak scale, without invoking any fine tuning of parameters, new directions of model building have appeared, e.g.…”