Probing the Top Quark Flavour-Changing Neutral Current at a Future Electron-Positron Collider by Hoda Hesari, Hamzeh Khanpour, Morteza Khatiri Yanehsari, Mojtaba Mohammadi Najafabadi

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Production of doubly charmed tetraquark Tcc via photon-photon fusion at electron-positron colliders by Jun Jiang, Shi-Yuan Li, Xiao Liang, Yan-Rui Liu, Zong-Guo Si, Zhong-Juan Yang

“…Two diquark configurations of (cc)[S13]3¯ and (cc)[S01]6 are considered, and the (cc)[S13]3¯ state dominates the production of Tcc. …”
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Heat flux effect in ηi- mode driven solitary and shock waves in electron-positron-ion plasma by U. Zakir, K. Aziz, Q. Haque, A. Murad, M. Sohail

“… The distinguishing role of ion heat flux on the characteristics of the linear and nonlinear ion temperature gradient ($\eta_{i}$) driven mode in inhomogeneous electron-positron-ion plasma is presented. Inhomogeneity in density, temperature, and the magnetic field is considered. …”
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Probing lepton flavor violation via $e\tau$ production in an effective framework at a future electron-positron circular coll by Seyed Mohsen Etesami, Reza Jafari, Mojtaba Mohammadi Najafabadi, Seddigheh Tizchang

“…However, it can be violated in certain scenarios beyond the Standard Model. In this study, we consider $(e^{±}\tau^{\mp})$ production through a four-Fermi lepton flavor violation interaction at the future electron-positron circular collider (FCC-ee). …”
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$$Z_5$$ Z 5 two-component dark matter in the type-II seesaw mechanism by XinXin Qi, Hao Sun

“…Due to the new annihilation processes related to triplets, the light component cannot necessarily be dominant in the dark matter relic density, which is different from the two singlet extension of the standard model with a $$Z_5$$ Z 5 symmetry. The model is considered to explain the excess of electron-positron flux measured by the AMS-02 Collaborations in this work, which is encouraged by the decay of the triplets arising from dark matter annihilations in the Galactic halo. …”
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New physics off the Z-pole: e + e − → f f ¯ $$ f\overline{f} $$ at Future Lepton Colliders by Shao-Feng Ge, Zhuoni Qian, Michael J. Ramsey-Musolf, Jia Zhou

“…Based on the projected statistical uncertainties at the Circular Electron-Positron Collider (CEPC), we find that the measurement of A σ could extend the sensitivity to the NP mass scale by as much as a factor of ~ 7 compared to the present reach obtained with the CERN Large Electron Positron Collider. …”
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Low-energy supernova constraints on millicharged particles by Changqian Li, Zuowei Liu, Wenxi Lu, Zicheng Ye

“…We investigate low-energy supernova constraints on millicharged particles by considering three production channels in the core: plasmon decay, proton bremsstrahlung, and electron-positron annihilation. …”
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Multi-component dark matter and Galactic 511 keV γ-ray emission by Sarif Khan, Jinsu Kim, Jongkuk Kim, Pyungwon Ko

“…Three scenarios are investigated. First, we consider the minimal U(1) D extension where a dark gauge boson and a dark Higgs boson are newly introduced to the particle content. …”
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Bounds on the Electromagnetic Dipole Moments through the Single Top Production at the CLIC by M. Köksal, A. A. Billur, A. Gutiérrez-Rodríguez

“…We obtain bounds on the anomalous magnetic and electric dipole moments of the t-quark from a future high-energy and high-luminosity linear electron positron collider, as the CLIC, with polarized and unpolarized electron beams which are powerful tools for determining new physics. …”
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Ion-acoustic solitons in a relativistic Fermi plasma at finite temperature by Rupak Dey, Gadadhar Banerjee, Amar Prasad Misra, Chandan Bhowmik

“…Abstract The theory of ion-acoustic solitons in nonrelativistic fully degenerate plasmas and nonrelativistic and ultra-relativistic degenerate plasmas at low temperatures is known. We consider a multi-component relativistic degenerate electron-positron-ion plasma at finite temperatures. …”
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Chern-Simons induced thermal friction on axion domain walls by Saquib Hassan, Gaurang Ramakant Kane, John March-Russell, Georges Obied

“…EM, interacting with strength α = e 2/4π with charged matter, e.g. electron-positron pairs. In particular, in the presence of a U(1) gauge-and-matter relativistic thermal plasma we study the friction experienced by the walls due to the Chern-Simons term. …”
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Cooling Regimes of Nonthermal Electrons: The Slow, the Fast, and the Very Fast by Sk. Minhajur Rahaman, Jonathan Granot, Paz Beniamini

“…Additionally, we propose that VFC in the Thomson-thick regime is necessary for producing a bright and narrow electron–positron annihilation line, as was observed in the B.O.A.T. event, GRB 221009A.…”
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Looking for New Strategies to Probe Low-Mass Axion-like Particles in Ultraperipheral Heavy-Ion Collisions at the LHC by Pedro Nogarolli, Victor P. Gonçalves, Murilo S. Rangel

“…We also use the fact that a fraction of the photons convert into electron–positron pairs, allowing the reconstruction of the particle decay position. …”
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Test-beam measurements of instrumented sensor planes for a highly compact and granular electromagnetic calorimeter by Benhammou Yan

“…One of the crucial aims of this experiment is to measure the production of electron-positron pairs as a function of the laser field strength where non-perturbative effects are expected to kick in above the Schwinger limit. …”
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Test-beam measurements of instrumented sensor planes for a highly compact and granular electromagnetic calorimeter by Almanza Soto Melissa

“…As an alternative, GaAs sensors are considered with integrated readout strips on the sensor. …”
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Collisionless Shocks Having Relativistic Velocities in Relativistically Hot Plasmas by Kazuki Kamiido, Yutaka Ohira

“…In this work, collisionless shocks with a relativistic shock velocity in relativistically hot, unmagnetized electron–positron plasmas are investigated by two-dimensional particle-in-cell simulations. …”
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R-JET: A Postprocessing Code for Radiative Transport in Relativistic Jets by Kouichi Hirotani, Hsien Shang, Ruben Krasnopolsky, Kenichi Nishikawa

“…The jet consists of an electron–positron pair plasma and an electron–proton normal plasma. …”
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