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  1. 15621
    por Seidlitz, Blair Daniel
    Publicado 2020
    “…These correlations in large systems are known to arise from the hydrodynamic flow of the quark-gluon plasma (QGP). In small systems like \pp collisions, the interpretation of these collective signatures are much more diverse, ranging from a small droplet of QGP to initial state correlations. …”
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    Measurements of long-range correlations in $\mathrm{\gamma A}$ and $pp$ collisions with ATLAS
  2. 15622
    por ATLAS Collaboration
    Publicado 2020
    “…However, above 125 GeV off-shell production of the Higgs boson has a substantial cross section at the LHC, due to the increased phase space as the vector bosons (V = W, Z) and top quark decay products become on-shell with the increasing energy scale. …”
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    The Higgs boson off-shell coupling to constrain the total width
  3. 15623
    por Marinangeli, Matthieu
    Publicado 2020
    “…Three kinds of LLP production modes are considered: the direct pair production of LLPs from quark interactions, the pair production from a Standard Model like Higgs boson with a mass of 125 $GeV/c^{2}$, and charged current production from an on-shell $W$ boson with an additional lepton. …”
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    Search for flavoured leptonic decays of long-lived particles in the LHCb detector
  4. 15624
    por Nielsen, Emil Gorm
    Publicado 2021
    “…--HTML-->Heavy-ion collisions at ultra-relativistic energies at the LHC provide a unique opportunity to study the strongly interacting quark-gluon plasma (QGP). Anisotropic flow phenomena provide valuable information on the initial conditions of heavy-ion collisions, the transport coefficients, and the dynamic evolution of the created QGP. …”
    Enlace del recurso
    Fluctuations and correlations of flow in heavy-ion collisions measured by ALICE
  5. 15625
    por Mordasini, Cindy
    Publicado 2021
    “…--HTML-->Multiparticle azimuthal correlations have proved their usefulness to study and constrain the properties of the quark-gluon plasma (QGP) produced in ultrarelativistic heavy-ion collisions. …”
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    First measurements of genuine three-harmonic correlations in Pb-Pb collisions with ALICE
  6. 15626
    por The ATLAS collaboration
    Publicado 2021
    “…This note presents a search for decays of the Higgs boson with a mass of 125 GeV to a pair of new spin-0 particles, $H\rightarrow aa$, where one $a$-boson decays to a $b$-quark pair and the other to a muon pair. The search uses 139~fb$^{-1}$ of the LHC proton--proton collision data at a centre-of-mass energy of $\sqrt{s}$=13 TeV recorded by the ATLAS experiment between 2015 and 2018. …”
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    Search for Higgs boson decays into two spin-0 particles in the $bb\mu\mu$ final state with the ATLAS detector in $pp$ collisions at $\sqrt{s}=13$ TeV
  7. 15627
    por Burzynski, Jackson Carl
    Publicado 2021
    “…A novel search for exotic decays of the Higgs boson to pairs of long-lived neutral particles, each decaying to a bottom quark pair, is performed using 139~fb$^{-1}$ of $\sqrt{s} = 13$~TeV proton-proton collision data collected with the ATLAS detector at the LHC. …”
    Enlace del recurso
    A Search for Exotic Higgs Decays or: How I Learned to Stop Worrying and Love Long-lived Particles"
  8. 15628
    por Bold, Tomasz
    Publicado 2021
    “…The relativistic collisions of heavy ions revealed the existence of a new, dense and hot state of matter, the quark-gluon plasma (QGP). Models assuming that after the collision, the QGP stage occurs and the QGP behaves like nearly perfect liquid are sucessful in describing collective behaviours observed experimentally. …”
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    Enlace del recurso
    Collectivity of soft probes in small systems
  9. 15629
    por Rafanoharana, Dimbiniaina
    Publicado 2021
    “…In particular, the studies are performed in an inclusive phase-space relevant for measurements such as the top-quark mass and in phase-spaces relevant for searches.…”
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    Study of the Powheg-bb4l generator including non-resonant and off-shell effects in comparison with other MC generator predictions
  10. 15630
    por Barton, Adam Edward
    Publicado 2021
    “…In the Standard Model of particle physics, CP violation arises due to a single complex phase in the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix. Testing the validity of the CKM mechanism as a source of CP violation is one of the major experimental challenges in particle physics today. …”
    Enlace del recurso
    Enlace del recurso
    CP violation with the ATLAS and CMS experiments
  11. 15631
    por Bhatta, Somadutta
    Publicado 2021
    “…The correlation between the event-wise average transverse momentum ($[\pT]$) and the harmonic flow ($v_{n}$) carries important information about the initial-state geometry of the Quark-Gluon Plasma. Additionally, the potential quadrupole deformation in Xe+Xe is predicted to produce an initial state with enhanced shape and size fluctuations, and result in non-trivial change in the correlation. …”
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    Enlace del recurso
    Measurements of collective behavior in pp, Xe+Xe, and Pb+Pb collisions with the ATLAS detector
  12. 15632
    por Villalba, Carlos Vico
    Publicado 2021
    “…The top quark pair production cross section is measured in proton-proton collisions at a center-of-mass energy of 5.02 TeV. …”
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    Inclusive top-antitop pair production cross section at 5.02 TeV with CMS
  13. 15633
    “…The first CLIC running stage, at 380 GeV, will focus on precision Higgs boson and top quark studies while the main aim of the subsequent high-energy stages, at 1.5 TeV and 3 TeV, is to extend the sensitivity of CLIC to different Beyond the Standard Model (BSM) scenarios. …”
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    Enlace del recurso
    Searches for invisible scalar decays at CLIC
  14. 15634
    por Park, Jaebeom
    Publicado 2020
    “…Bottomonia are produced by hard scattering in the early times of a relativistic heavy-ion collision, so they serve as excellent probes of the quark-gluon plasma (QGP). Early CMS data showed that the yields of the $\Upsilon(1S)$, $\Upsilon(2S)$, and $\Upsilon(3S)$ mesons are suppressed in PbPb relative to those in pp. …”
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    Azimuthal anisotropy and nuclear modification of Upsilon states in PbPb collisions with the CMS detector
  15. 15635
    por Maj, Klaudia
    Publicado 2020
    “…The flow results allow to improve the understanding of initial conditions of nuclear collisions, hydrodynamical behaviour of Quark–Gluon Plasma and parton energy loss.…”
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    Enlace del recurso
    Azimuthal Anisotropy in Heavy-ion Collisions with the ATLAS Detector at the LHC
  16. 15636
    por Krizek, Filip
    Publicado 2021
    “…High-multiplicity events in small collision systems (pp, p-Pb) at LHC energies exhibit soft-physics phenomena that are associated with collective dynamics of the quark-gluon plasma (QGP) in large collision systems, e.g. azimuthal correlation between soft particles having large pseudorapidity separation. …”
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    Enlace del recurso
    Projections for jet quenching measurements in O-O collisions at $\sqrt{s_{NN}}$= 6.37 TeV during the LHC Run 3
  17. 15637
    Publicado 2022
    “…The polarization could be connected with the existence of a strong magnetic field in the early stage of quark--gluon plasma formation in Pb--Pb collisions, as well as with its behaviour as a rotating fluid with large vorticity.…”
    Enlace del recurso
    Physics Preliminary Summary: Measurement of the J/$\psi$ polarization with respect to the event plane in Pb–Pb collisions at the LHC
  18. 15638
    por The ATLAS collaboration
    Publicado 2022
    “…Exclusion limits are also set on two HEFT coupling parameters associated with the couplings of a Higgs boson pair with two gluons, $c_{gghh}$, and with a top-quark pair, $c_{tthh}$. Values of these parameters are excluded outside the observed (expected) ranges of $[-0.3 , 0.4 ]$ ($[-0.3, 0 .3]$) and $[-0.2, 0.6]$ ($[-0.2, 0.6]$), respectively, at the 95\% confidence level.…”
    Enlace del recurso
    HEFT interpretations of Higgs boson pair searches in $b\bar{b} \gamma \gamma$ and $b\bar{b}\tau \tau$ final states and of their combination in ATLAS
  19. 15639
    por Yin, Pengqi
    Publicado 2022
    “…In larger systems, the long-range correlations are known to arise from the collective dynamics of the produced quark-gluon plasma (QGP). The similarity between the $pp$ and heavy-ion measurements raises the possibility that a tiny droplet of the QGP is produced even in $pp$. …”
    Enlace del recurso
    ATLAS measurement of the two-particle correlation sensitivity to jets in $pp$ collisions
  20. 15640
    por The ATLAS collaboration
    Publicado 2022
    “…The inclusive top-quark pair ($t\bar{t}$) production cross-section $\sigma_{t\bar{t}}$ is measured in proton-proton collisions at a centre-of-mass energy $\sqrt{s}=5.02$ TeV, using 257 pb$^{-1}$ of data collected in 2017 by the ATLAS experiment at the LHC. …”
    Enlace del recurso
    Measurement of the $t\bar{t}$ production cross-section in $pp$ collisions at $\sqrt{s}=5.02$ TeV with the ATLAS detector
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