Recent results on associated top Higgs production at CMS are reviewed.
The search for the production of the Higgs Boson with a pair of top-anti-top quarks is both very important and very challenging. This talks presents the analyses using Higgs boson decays to bbbar pairs, to two Z bosons, to other multi-lepton final states, and to a pair of photons, using 36 fb-1 of pp collision data collected at 13 TeV, as well as their combined results.
Measurements of $t\bar{t}H$ production in the $H \to b\bar{b}$ channel depend in a critical way on the theoretical uncertainty associated with the irreducible $t\bar{t}+b$-jet background. In this paper, analysing the various topologies that account for b-jet production in association with a $t\bar{t}$ pair, we demonstrate that the process at hand is largely driven by final-state $g \to...
Results on Higgs differential cross-sections measurements at CMS are reviewed.
Measurements and searches of Higgs boson decays to two third- or two second-generation quarks or leptons are presented using 36 fb-1 of pp collision data collected at 13 TeV.
Measurements of Higgs boson properties and cross sections measured in Higgs boson decays to two photons, two Z bosons, and two W bosons based on pp collision data collected at 13 TeV are presented. In addition, results from the combination of different decay channels are shown.
Observation of Higgs in tautau is reported, together with results from Higgs in bb and mumu decays.
Measurement of the properties of the Higgs boson, especially in the gamma-gamma and ZZ channels, are reported.
Theories beyond the Standard Model predict Higgs boson decays at a much enhanced rate compared to the Standard Model, e.g. for decays to Z+photon or a meson and a photon, or decays that do not exist in the Standard Model, such as decays into two light bosons (a). This talk presents recent results based on 36 fb-1 of pp collision data collected at 13 TeV.
Many models of physics beyond the Standard Model (SM) introduce enhanced couplings to third generation quarks. The predicted signatures at the LHC include single and pair production of vector-like quarks and heavy resonances decaying to third generation quarks. We present results from searches obtained with the full 2016 dataset of proton-proton collisions at 13 TeV. A wide range of final...
As evinced by multiple astrophysical measurements, a large fraction of the matter in the Universe is in the form of a dark, non-baryonic component. If dark matter interacts weakly with the Standard Model it could be produced at the LHC, escaping the detector and thus leaving a signature of large missing transverse momentum. A broad and systematic search program for dark matter production in...
Results from double Higgs production with the CMS experiment are reviewed.
Searches for resonant and non-resonant Higgs boson pair production are performed with LHC data. The searches cover a wide mass range for the resonant case and different decay channels have been explored. No significant deviation from the Standard Model prediction is observed
in data. The 95% conference-level observed and expected limit is set on the cross-section for non-resonant/resonance production.
Recent results on the search for the rare and exotic decays of the Higgs boson H(125) from the CMS experiment will be presented in this talk. The large dataset delivered by LHC and collisions at higher center of mass energy of 13 TeV have significantly improved the search sensitivity for these rare and exotic decays with respect to Run-1.
Final states with isolated photons are expected in models of gauge mediated breaking of supersymmetry, but they can also occur as a result of decays of Higgs bosons produced in the decay chains of supersymmetric particles. Results of searches for strong and electroweak production of supersymmetry in events with one or two isolated photons are presented, based on pp collisions recorded with the...
Many supersymmetric scenarios feature final states with non-standard final state objects. The production of massive sparticles can lead to the production of boosted top quarks or vector bosons, high-pt b-jets. At the same time, transitions between nearly mass-degenerate sparticles can challenge the standard reconstruction because of the presence of very soft leptons or jets. The talk will...
R-parity violation introduces many viable signatures to the search for supersymmetry at the LHC. Strongly interacting resonances and lightest supersymmetric particles may decay into many leptons or jets with or without missing transverse momentum. Several supersymmetric models also predict massive long-lived supersymmetric particles. Such particles may be detected through abnormal specific...
Many supersymmetry models feature gauginos and also sleptons with masses less than a few hundred GeV. These can give rise to direct pair production rates at the LHC that can be observed in the data sample recorded by the ATLAS detector. The talk presents results from searches for gaugino and slepton pair production in final states with leptons, and were performed with pp collisions at a...
Results of searches for the production of supersymmetric partners of gluons and quarks are presented. They are based on pp collisions recorded by the CMS experiment at sqrt(s) = 13 TeV. The searches are performed in final states with 0, 1, or more leptons and are either generic, or specifically designed for the production of third-generation squarks. In the most favorable scenarios, mass...
Despite the absence of experimental evidence, weak scale supersymmetry remains one of the best motivated and studied Standard Model extensions. This talk summarises recent ATLAS results on inclusive searches for supersymmetric squarks and gluinos, including third generation squarks produced in the decay of gluinos. The searches involve final states containing jets, missing transverse momentum...
Naturalness arguments for weak-scale supersymmetry favour supersymmetric partners of the third generation quarks with masses not too far from those of their Standard Model counterparts. Top or bottom squarks with masses less than or around one TeV can also give rise to direct pair production rates at the LHC that can be observed in the data sample recorded by the ATLAS detector. The talk...
The MSSM predicts the existence of additional neutral and charged Higgs bosons. This presentation will discuss results from recent searches for these particles in several decay channels based on collision data collected at 13 TeV, and their interpretation within the MSSM.
When discussing the future searches for New Physics, electron-positron and proton-proton collider dominate the agenda, the choice being between a clean environment and higher energy. In this talk I will show with two concrete examples (Long-Lived Charged particles in SUSY and Higgs rare decays) how electron-proton colliders combine a clean environment with energies beyond the reach of most...
Several theories beyond the Standard Model predict the existence of new heavy particles decaying into pairs of gauge bosons. In this presentation the latest ATLAS results on searches for resonances decaying into pairs of W or Z bosons or photons, or into a Z boson and a photon, based on 36 fb-1 of pp collision data collected at 13 TeV will be discussed.
Searches for additional scalar bosons with the Run 2 data at CMS are reviewed.
The large dataset collected so far during Run 2 of the LHC at a centre-of-mass energy of 13 TeV provides a significantly improved sensitivity for discovery of new physics with respect to Run 1. Searches for new resonances in di-boson final states (VV, VH, HH, where V = W, Z) with the CMS detector are presented. The analyses are optimised for high sensitivity over a large range in resonance...
SHIP is a new general purpose fixed target facility, whose Technical Proposal has been reviewed by the CERN SPS Committee and by the CERN Research Board. The two boards recommended that the experiment proceeds further to a Comprehensive Design phase in the context of the new CERN Working group "Physics Beyond Colliders", aiming at presenting a CERN strategy for the European Strategy meeting...
Searches for heavy neutral lepton (HNL) production in charged kaon decays
using the data collected by the NA62 experiment at CERN are reported. Upper
limits are established on the elements of the extended neutrino mixing
matrix for heavy neutral lepton mass in the range 130-450 MeV, improving on
the results from previous HNL production searches. The status and prospects
of searches for lepton...
Results of searches for the direct production of sleptons, charginos and neutralinos are presented. Sensitivity to these low cross section modes has been obtained based on the first large dataset of pp collisions recorded by the CMS experiment at sqrt(s) = 13 TeV. The searches are typically performed in final states with two or more leptons. In order to obtain sensitivity to compressed mass...
This paper explores the effects of both finite width and interference (with background) in the single production and decay of extra heavy quarks with charge +2/3 and -1/3 at the Large Hadron Collider (LHC). This dynamics is normally ignored in standard experimental searches and we assess herein the regions of validity of current approaches, using a model independent parametrization. We also...
