“…The search channels target Higgs boson production via gluon fusion, vector boson fusion, and in association with a vector boson. …”
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“…The analysis of the cross section and angular distributions will provide a 3 dimensional structure of the proton by determining the correlations between position and momentum of the elementary quarks and gluons inside the proton. The COMPASS experiment comprises a high resolution forward spectrometer with many trackers for charged particles, detectors for particle identification as three electromagnetic calorimeters and a recoil proton detector around the target.…”
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“…The study of the substructure of these jets allows the separation of these boosted decays with respect to more common jets from light­ quarks and gluons. Several techniques have been developed by the phenomenology and experimental community to identify jets coming from hadronic decays of boosted top quarks, W, Z and Higgs bosons. …”
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“…The latest measurements of the Higgs boson properties in both the $\mathrm{H}\rightarrow\gamma\gamma$ decay channel and the $\mathrm{H}\rightarrow{\rm Z}{\rm Z}\rightarrow4\ell$ ($\ell={\rm e},\mu$) decay channel using the proton-proton collision data corresponding to an integrated luminosity of 35.9 $\mathrm{fb}^{-1}$ at $\sqrt{s}=13$ $TeV$, including the signal strength relative to the standard model prediction, signal strength modifiers for different Higgs production modes, coupling modifiers to fermions and bosons, and effective coupling modifiers to photons and gluons, are presented. In addition, dedicated measurements of the Higgs boson's mass, width, total and differential fiducial cross sections have been summarized. …”
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“…Measurements of jets and particle correlations in nucleus-nucleus collisions are intended to probe QCD interactions in the high temperature phase, where matter is understood to behave as a quark-gluon plasma. Two probes are reviewed: jets which are used to study the energy loss of hard-scattered partons in this medium and particle correlations which are used to understand collective effects of the bulk matter. …”
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“…Production of heavy flavoured hadrons can serve as a probe of QCD processes and, in the case of production in heavy ion collisions, also as a probe of the properties of deconfined quark-gluon plasma. This paper describes the latest results in the production of charmonium in the ATLAS experiment at the Large Hadron Collider. …”
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“…Finally, a measurement involving the di-lepton decay cahnnel of top-quark pairs at 8 TeV is presented, because its direct sensitivity to the gluon PDF. Proceeding of an ATLAS talk given at QCD18.…”
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“…The production of prompt isolated photons at hadron colliders provides a stringent test of perturbative Quantum Chromodynamics and can be used to probe the gluon density function of the proton. Using proton-proton collision data provided by the Large Hadron Collider, the ATLAS collaboration has performed numerous cross-section measurements of prompt photon production, among which are a precise measurement of the production of isolated prompt photons in association with heavy flavor jets, a first measurement of the production cross-section of tri-photon final states at a center of mass energy of 8 TeV, and a photon plus jet cross-section measurement at 13 TeV. …”
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“…Measurements of jet production probe both the perturbative and non-perturbative regime, including measurements of dijet and trijet production in the back-to-back limit as well as fragmentation, gluon splitting and event shape studies. Photon analyses include measurements of the inclusive photon and photon plus jet cross sections, as well as the ratio of the cross sections for the centre-of-mass energies of 13 TeV and 8 TeV.…”
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“…As a case study, I will present predictions for dijet production at pO, which has a sizable cross section at the 9.9 TeV collision energy and can thus be expected to give constraints for gluon nuclear modifications even at relatively low luminosities.…”
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“…There are several different predictions for the behaviour of the gluon distribution in nuclei at small Bjorken-$x$ and experimental data are needed to chose among them. …”
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“…The results shown include measurements of $v_n$-mean $p_T$ correlations and longitudinal flow decorrelations in Xe+Xe and Pb+Pb collisions, which carry important information about the initial-state geometry of the Quark-Gluon Plasma; heavy flavour flow harmonics testing the quark energy loss mechanism in QGP; and measurements of the sensitivity of collective behaviour in $pp$ collisions to the presence of jets, which provide insight on the role of semi-hard processes in the origin of the flow phenomena in small systems. …”
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“…Measurements of $B_{S}^{0}$ production can shed light on the mechanisms of beauty recombination in the medium and provide information about strangeness enhancement in the quark-gluon plasma. In this talk, we will present a new measurement of the ratio of $B_{S}^{0}$ to $B^{+}$ mesons in PbPb collisions at 5.02 TeV with the CMS detector, using data recorded in 2018.…”
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“…The ultimate goal of heavy-ion collisions is to study the properties of the deconfined medium known as the Quark-Gluon-Plasma. Light flavour hadrons allow investigation of the bulk properties of the created medium. …”
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“…The measurement is sensitive to gluon parton density distribution. We will discuss the measurement of new event-shape jet observables defined in terms of reference geometries with cylindrical and circular symmetries using the energy mover's distance. …”
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“…Recent results in high-multiplicity pp collisions show features similar to those that are associated with the formation of a quark$-$gluon plasma in heavy-ion collisions. Investigating the modification of the intra-jet properties as a function of event multiplicity in pp collisions can provide deeper insight into the nature of these effects. …”
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“…These heavy-flavour jets are crucial for studying the properties of heavy quarks and their interactions with the quark-gluon plasma produced in high-energy heavy-ion collisions. …”
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“…The initial QGP geometry of the quark-gluon plasma (QGP) is manifested as azimuthal anisotropy in final state particles of a nuclear collision in the plane transverse to the beam direction. …”
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“…The SND@LHC experiment aims to measure the cross-section of high-energy neutrinos produced in LHC collisions to study charmed hadron production and extract the gluon PDF at low momentum fractions. In this project, the first procedure for hadronic shower energy and vertex position reconstruction is developed for the SND detector. …”
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“…When a 33 TeV Lead nucleous projectile hits head on a Lead target it creates for a brief instant of time a system of quarks and gluons that more than 100'000 times hotter than the sun. …”
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