PHENIX highlights: Recent results from PHENIX by Shimomura Maya

“…The Relativistic Heavy Ion Collider (RHIC) PHENIX experiment has provided new insights into the behavior of quark-gluon plasma (QGP) under extreme conditions. While PHENIX concluded data collection in 2016, the collaboration remains actively engaged in analyzing the rich dataset yielding the following three important results recently. (1) Heavy flavor (HF) with charm and bottom quark separation indicates a clear mass dependence observed in central collisions. …”
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Particle Production in Strong Electromagnetic Fields in Relativistic Heavy-Ion Collisions by Kirill Tuchin

“…I demonstrate by explicit analytical calculation that after dropping by about one-two orders of magnitude during the first fm/c of plasma expansion, it freezes out and lasts for as long as quark-gluon plasma lives as a consequence of finite electrical conductivity of the plasma. …”
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Deconfinement and Freezeout Boundaries in Equilibrium Thermal Models by Abdel Nasser Tawfik, Muhammad Maher, A. H. El-Kateb, Sara Abdelaziz

“…At low baryonic density or high energies, both deconfinement and chemical freezeout boundaries are likely coincident, and therefore, the agreement with the lattice simulations becomes excellent as well, while at large baryonic density, the two boundaries become distinguishable forming a phase where hadrons and quark-gluon plasma likely coexist.…”
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Study of baryon-strangeness and charge-strangeness correlations in Pb–Pb collisions at √sNN = 5.02 TeV with ALICE by Saha Swati

“…In the quest to unravel the mysteries of the strong force and the underlying properties of the quark-gluon plasma, the ALICE collaboration at CERN has carried out a comprehensive study focusing on the correlations between net-conserved quantities such as net-baryon, net-charge and net- strangeness. …”
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Thermal axion production at hard and soft momenta by Killian Bouzoud, Jacopo Ghiglieri

“…In this paper we quantify the contribution to N eff and its uncertainty in models with axion-gluon couplings from thermal dynamics above the QCD transition. …”
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Proton internal pressure from deeply virtual Compton scattering on collider kinematics by H. Dutrieux, T. Meisgny, C. Mezrag, H. Moutarde

“…Moreover, the limitation to a leading-order description in the strong coupling of the data has provided only an indirect and weakly sensitive access to gluon degrees of freedom, solely through their mixing to quarks via evolution. …”
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Infrared and transcendental structure of two-loop supersymmetric QCD amplitudes by Gregor Kälin, Gustav Mogull, Alexander Ochirov, Bram Verbeek

“…Abstract Using a careful choice of infrared (IR) subtraction scheme, we demonstrate cancellation of all terms with transcendental weights 0, 1, 2 from the finite part of the full-color two-loop four-gluon N $$ \mathcal{N} $$ = 2 supersymmetric QCD amplitude, with Nf massless supersymmetric quarks. …”
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Dependence of net-hyperon production at mid-rapidity on beam energy and its implication on baryon number carrier by Tsang Chun Yuen

“…However, an alternative picture exists where the center of a Y-shaped topology of gluon fields, called the baryon junction, carries 1 unit of baryon number. …”
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Fast timing silicon R&D for the future Electron-Ion Collider by Li Xuan, Renner Eric, Liu Ming, Sondheim Walter, Sanchez Carlos Solans, Nuñez Marcos Vazquez, Gonzalez Vicente, Morales Yasser Corrales

“…The proposed Electron-Ion Collider (EIC) will utilize high- luminosity high-energy electron+proton (e + p) and electron+nucleus (e + A) collisions to solve several fundamental questions including searching for gluon saturation and studying the proton/nuclear structure. …”
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The impact of data from future lepton colliders on light hadrons fragmentation functions by Bin Zhou, Jun Gao

“…Abstract In this work, we study the constraining power of future lepton colliders on fragmentation functions (FFs) to light charged hadrons from quarks and gluon in the framework of QCD collinear factorization. …”
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Electromagnetic Radiations from Heavy Ion Collision by Payal Mohanty, Sabyasachi Ghosh, Sukanya Mitra

“…In the calculations of interferometry involving dilepton pairs, it is argued that the nonmonotonic variation of HBT radii with invariant mass of the lepton pairs signals the formation of quark gluon plasma in HIC. Elliptic flow (v2) of dilepton is also studied at sNN=2.76 TeV for 30–40% centrality using the (2+1)d hydrodynamical model.…”
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Fully charmed tetraquark production at the LHC experiments by Ilia Belov, Alessandro Giachino, Elena Santopinto

“…Prompted by the recent LHCb, ATLAS and CMS data, we perform a pQCD calculation of O $$ \mathcal{O} $$ ( α s 5 $$ {\alpha}_s^5 $$ ) short-distance factors in the dominant channel of gluon fusion, and match these to the four-body T 4c wave functions in order to obtain the unpolarized T 4c (0++ , 1+− , 2++) cross-sections. …”
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Quarkonium production in pp and heavy-ion collisions by Song Taesoo, Aichelin Joerg, Zhao Jiaxing, Gossiaux Pol B., Bratkovskaya Elena

“…The density operator is updated whenever heavy quark or heavy antiquark scatters in quark-gluon plasma (QGP). Our results are consistent with the experimental data on bottomonia from ALICE and CMS Collaborations assuming that the interaction rate of bottom (anti)quark in bottomonium is suppressed to 10 % that of unbound bottom (anti)quark. …”
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Two-colour QCD phases and the topology at low temperature and high density by Kei Iida, Etsuko Itou, Tong-Gyu Lee

“…This is a contrast to the case of 0.89Tc in which the topological susceptibility becomes small as the hadronic phase changes into the quark-gluon plasma phase.…”
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Lévy walk of pions in heavy-ion collisions by Dániel Kincses, Márton Nagy, Máté Csanád

“…In high-energy collisions of heavy nuclei, the strongly interacting Quark Gluon Plasma is created, which, similarly to the early Universe, undergoes a rapid expansion and transition back to hadronic matter. …”
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Towards Transparent Diabetes Prediction: Combining AutoML and Explainable AI for Improved Clinical Insights by Raza Hasan, Vishal Dattana, Salman Mahmood, Saqib Hussain

“…Using the Pima Indian Diabetes dataset, we developed an ensemble model with 85.01% accuracy leveraging AutoGluon’s AutoML framework. To address the “black-box” nature of machine learning, we applied XAI techniques, including SHapley Additive exPlanations (SHAP), Local Interpretable Model-Agnostic Explanations (LIME), Integrated Gradients (IG), Attention Mechanism (AM), and Counterfactual Analysis (CA), providing both global and patient-specific insights into critical risk factors such as glucose and BMI. …”
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NNLO PDFs driven by top-quark data by S. Alekhin, M. V. Garzelli, S.-O. Moch, O. Zenaiev

“…It includes recent high-statistics data on absolute total inclusive cross sections for    $$t\bar{t}+X$$ t t ¯ + X , the sum of $$(t + X)$$ ( t + X ) and $$(\bar{t} + X)$$ ( t ¯ + X ) hadroproduction, and normalized inclusive data double-differential in the invariant mass and rapidity of the $$t\bar{t}$$ t t ¯ pair at $$\sqrt{S}=13$$ S = 13  TeV. The gluon PDF at large x and the top-quark mass value derived from these data are well compatible with the previous ABMP16 results, but with significantly smaller uncertainties, reduced by up to a factor of two. …”
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Uncovering new Higgses in the LHC analyses of differential t t ¯ $$ t\overline{t} $$ cross sections by Sumit Banik, Guglielmo Coloretti, Andreas Crivellin, Bruce Mellado

“…In this article, we use the differential lepton distributions from the latest ATLAS t t ¯ $$ t\overline{t} $$ analysis to study a new physics benchmark model motivated by existing indications for new Higgses: a new scalar H is produced via gluon fusion and decays to S ′ (95 GeV) and S (152 GeV), which subsequently decay to b b ¯ $$ b\overline{b} $$ and WW, respectively. …”
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Polarization of thermal dilepton radiation by Florian Seck, Bengt Friman, Tetyana Galatyuk, Hendrik van Hees, Ralf Rapp, Enrico Speranza, Jochen Wambach

“…While the low- and high-mass regions exhibit the expected limits of transverse and unpolarized photons, respectively, baryon-driven medium effects in the ρ-meson mass region create a marked longitudinal polarization that transits into a largely unpolarized emission from the quark-gluon plasma, thus providing a sensitive test of microscopic emission processes in QCD matter. …”
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Moments of axial-vector GPD from lattice QCD: quark helicity, orbital angular momentum, and spin-orbit correlation by Shohini Bhattacharya, Krzysztof Cichy, Martha Constantinou, Xiang Gao, Andreas Metz, Joshua Miller, Swagato Mukherjee, Peter Petreczky, Fernanda Steffens, Yong Zhao

“…We consider both the iso-vector and iso-scalar cases, utilizing next-to-leading-order perturbative matching while omitting the disconnected contributions and gluon mixing in the iso-scalar case. For the first time, we determine the Mellin moments of H ~ $$ \overset{\sim }{H} $$ up to the fifth order. …”
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