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ATLAS Collaboration(Aad, G. et al), Aikot, A., Amos, K. R., Bouchhar, N., Cabrera Urban, S., Cantero, J., et al. (2025). Search for cascade decays of charged sleptons and sneutrinos in final states with three leptons and missing transverse momentum in pp collisions at √s=13 TeV with the ATLAS detector. Phys. Rev. D, 112(1), 012005–41pp.
Abstract: A search for cascade decays of charged sleptons and sneutrinos using final states characterized by three leptons (electrons or muons) and missing transverse momentum is presented. The analysis is based on a dataset with 140 fb(-1) of proton-proton (pp) collisions at a center-of-mass energy of root s = 13 TeV recorded by the ATLAS detector at the Large Hadron Collider. This paper focuses on a supersymmetric scenario that is motivated by the muon anomalous magnetic moment observation, dark-mattter relic density abundance, and electroweak naturalness. A mass spectrum involving light Higgsinos and heavier sleptons with a bino at intermediate mass is targeted. No significant deviation from the Standard Model expectation is observed. This search enables us to place stringent constraints on this model, excluding at the 95% confidence level charged slepton and sneutrino masses up to 450 GeV when assuming a lightest neutralino mass of 100 GeV and mass-degenerate selectrons, smuons and sneutrinos.
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Cornet-Gomez, F., Miralles, V., Miralles Lopez, M., Moreno Llacer, M., & Vos, M. (2025). Future collider constraints on top-quark operators. J. High Energy Phys., 10(10), 156–44pp.
Abstract: In this paper we present updated constraints on the top-quark sector of the Standard Model Effective Field Theory using data available from Tevatron, LEP and the LHC. Bounds are obtained for the Wilson coefficients from a global fit including the relevant two-fermion operators, four-quark operators and two-quark two-lepton operators. We compare the current bounds with the prospects for the high luminosity phase of the Large Hadron Collider and future lepton colliders.
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Antonova, M., Capo, J., Cervera, A., Fernandez, P., Garcia-Peris, M. A., & Pons, X. (2026). Millikelvin-precision temperature sensing for advanced cryogenic detectors. Nucl. Instrum. Methods Phys. Res. A, 1082, 171062–13pp.
Abstract: Precise temperature monitoring-to the level of a few millikelvin-is essential for the operation of large-scale cryostats requiring a recirculation system. In particular, the performance of Liquid Argon Time Projection Chambers-such as those planned for the DUNE experiment-strongly relies on proper argon purification and mixing, which can be characterized by a sufficiently dense grid of high-precision temperature probes. In this article, we describe the key components of a novel temperature monitoring system developed for a prototype of the DUNE experiment. In particular, a new technique for the cross-calibration of Resistance Temperature Detectors in cryogenic liquids will be presented in detail. This calibration has enabled the validation and optimization of the system's components, achieving an unprecedented relative precision better than 3 mK.
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ATLAS Collaboration(Aad, G. et al), Aikot, A., Amos, K. R., Bouchhar, N., Cabrera Urban, S., Cantero, J., et al. (2025). Charged-hadron and identified-hadron (KS0, Λ, Ξ-) yield measurements in photonuclear Pb plus Pb and p plus Pb collisions at √sNN=5.02 TeV with ATLAS. Phys. Rev. C, 111(6), 064908–33pp.
Abstract: This paper presents the measurement of charged-hadron and identified-hadron (K-S(0), Lambda, Xi(-)) yields in photonuclear collisions using 1.7 nb(-1) of root s(NN) = 5.02 TeV Pb + Pb data collected in 2018 with the ATLAS detector at the Large Hadron Collider. Candidate photonuclear events are selected using a combination of tracking and calorimeter information, including the zero-degree calorimeter. The yields as a function of transverse momentum and rapidity are measured in these photonuclear collisions as a function of charged-particle multiplicity. These photonuclear results are compared with 0.1nb(-1) of root s(NN) = 5.02 TeV p + Pb data collected in 2016 by ATLAS using similar charged-particle multiplicity selections. These photonuclear measurements shed light on potential quark-gluon plasma formation in photonuclear collisions via observables sensitive to radial flow, enhanced baryon-to-meson ratios, and strangeness enhancement. The results are also compared with the Monte Carlo DPMJET-III generator and hydrodynamic calculations to test whether such photonuclear collisions may produce small droplets of quark-gluon plasma that flow collectively.
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Lyu, W. T., Duan, M. Y., Li, D. M., Wang, B., Chen, D. Y., & Wang, E. (2025). B- → J=ψη'K- reaction and the Y(4710) and K*0(1430) contributions. Phys. Rev. D, 112(7), 074005–8pp.
Abstract: Motivated by the recent LHCb Collaboration analysis, we have investigated the process B--* J=psi eta'K-by considering the contributions from the resonances Y(4710) and K*0(1430). Our results are in good agreement with the measured invariant mass distributions and the Dalitz plot of LHCb, which supports the existence of the K*0(1430) and the Y(4710) in the process B--* J=psi eta'K-. Since the decay mode of Y(4710)-* J=psi eta' is Okubo-Zweig-Iizuka suppressed for the charmonium state, the measurements of the B(Y(4710)-* J=psi eta') through the process B--* J=psi eta'K-or other processes is helpful to understanding the nature of the Y(4710). Thus, we advocate that Belle II and LHCb Collaborations could perform the more precise analysis to confirm the evidence of the Y(4710) state, which could be helpful to reduce the experimental uncertainties of its mass and width and to explore its nature.
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