“…--HTML-->---------- Heavy ion collisions at high energies can be used as an interesting way to recreate and study the medium of the quark-gluon plasma (QGP). We particularly investigate the jets produced in hard binary collisions and their interactions with a tentative medium. …”
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“…--HTML-->It is believed that the properties of quark-gluon plasma (QGP) can be studied through measurements of the jet quenching phenomenon. …”
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“…--HTML-->“Hybrid Hadronization” is a new Monte Carlo package to hadronize systems of partons. It smoothly combines quark recombination applicable when distances between partons in phase space are small, and string fragmentation appropriate for dilute parton systems, following the picture outlined by Han et al. …”
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“…--HTML-->Light meson measurements in high-energy proton-nucleus collisions provide a probe to study the physics of strongly interacting matter and the quark-gluon plasma (QGP). In particular, measuring the nuclear modification factor $R_{pA}$, where the particle production in pA is compared to a baseline proton-proton reference which is scaled to account for nuclear geometry, provides important insights to the modfication of nucleon structure functions in nuclei and a baseline for the observed strong suppression of hadron yields at high $p_{\rm T}$ in heavy-ion collisions. …”
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“…Results are interpreted in a simplified model, where each bottom squark is assumed to decay to the second-lightest neutralino $\tilde \chi_2^0$ and a bottom quark, with $\tilde \chi_2^0$ decaying to a Higgs boson and the lightest neutralino $\tilde \chi_1^0$. …”
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“…Our approach provides a systematic expansion of the wave function in quark velocity. The first relativistic correction included in our calculation is found to be significant, and crucial for a good description of the HERA exclusive $J/\Psi$-production data. …”
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“…It has been recently suggested that exclusive photo-nuclear $J/\psi$ production in electron-deuteron scattering at the Electron-Ion Collider (EIC) would provide new insights into the Short-Range Correlations inside nuclei, particularly from the perspective of the underlying quark-gluon dynamics. While awaiting for EIC, data from deuteron-gold (d+Au) UPCs recorded by the STAR detector at the Relativistic Heavy Ion Collider can be used as a proxy to test various techniques and hypotheses. …”
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“…--HTML-->Under the assumption that a quark-gluon plasma droplet is produced and its evolution can be described by hydrodynamics in p + A collisions, $\gamma$-triggered hadron spectra \cite{Wang:1996yh, Zhang:2009rn} are studied within a next-to-leading-order perturbative QCD parton model with the medium-modified parton fragmentation functions. …”
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“…Stimulated by the exciting progress on the observations of the fully-charmed tetraquarks at LHC, we carry out a combined analysis of the mass spectra and fall-apart decays of the $1S$-, $2S$-, and $1P$-wave $cc\bar{c}\bar{c}$ states in a nonrelativistic quark model (NRQM). It is found that the $X(6600)$ structure observed in the di-$J/\psi$ invariant mass spectrum can be explained by the $1S$-wave state $T_{(4c)0^{++}}(6550)$. …”
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“…Overwhelming works on this topic tend to attribute the peak as a four-quark state: tetraquark or molecule. Instead, we suggest that this peak is corresponding to a fundamental Higgs-like boson with mass about $6.9~{\rm GeV}$ which is advocated by a BSM effective theory. …”
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“…Additionally, studies in analysis development using RJR are outlined, with the focus being on addressing combinatoric ambiguities in top quark processes. The development of electron identification efficiency at low energies at ATLAS is also presented in this work. …”
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“…These include differential measurements of the exclusive di-muon production cross-section, which are crucial for setting constraints on the initial photon spectrum for all UPC measurements at the LHC; measurements of light-by-light scattering, which result in an observation of this elusive Standard Model process and set competitive limits on the parameter space for axion-like particles; measurements of electromagnetic di-muon production in non-UPC Pb+Pb collisions, which are sensitive to the structure of the initial EM fields and possibly EM content of the created Quark-Gluon Plasma; and measurements of collective behavior in high-multiplicity photo-nuclear collisions.…”
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“…The measurements of the cross section of the Z boson, decaying to dielectrons or dimuons, in association with at least one bottom quark jet are performed with proton-proton collision data at $\sqrt{s}=13~\mathrm{TeV}$. …”
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“…The latter provides a potentially sensitive electromagnetic probe of the quark-gluon plasma. This talk presents a series of measurements of such processes performed by the ATLAS Collaboration. …”
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“…A narrow structure in the invariant mass distribution of $\rm{B^0_s \pi^\pm}$ has been observed by the D0 Collaboration with a mass value of 5568 MeV and interpreted as the first observation of a possible tetra-quark state with four different flavours. The evidence of such a state was not confirmed by any of the latest searches from LHCb, CDF, ATLAS and CMS Collaborations. …”
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“…A reliable etermination of |V_{cb}| from inclusive decays is possible if one either uses a short distance b quark mass or eliminates all unphysical mass parameters in terms of measured observables, such that all infra-red contributions of order 1/m_b cancel explicitly. …”
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“…The production of low-mass dielectrons is one of the most promising tools to understand the properties of the quark--gluon plasma (QGP) created in ultra-relativistic heavy-ion collisions. …”
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“…The measurement of differential prompt production cross sections of S-wave quarkonia in pp collisions at the center-of-mass energy $\sqrt{s}=13$TeV is reported since these are important for the study of the heavy-quark production mechanisms in quantum chromodynamics (QCD). …”
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“…Thus, measurements of charm-baryon production are crucial to study the charm-quark hadronisation in pp collisions and the possible difference with respect to $\rm e^{+}e^{-}$ and ep collisions. …”
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“…Fixed-target collisions offer many physics opportunities related to hadronic matter and the quark-gluon plasma to extend the research potential of the CERN accelerator complex. …”
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