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Weigel, P. L. R., Conrad, J. M., & Garcia-Soto, A. (2025). Cross sections and inelasticity distributions of high-energy neutrino deep inelastic scattering. Phys. Rev. D, 111(4), 043044–25pp.
Abstract: This study presents a comprehensive model for neutrino deep inelastic scattering (DIS) cross sections spanning energies from 50 to 5 x 1012 GeV with an emphasis on applications to neutrino telescopes. We provide calculations of the total charged-current DIS cross sections and inelasticity distributions up to nextto-next-to-leading order for isoscalar nucleon targets and up to next-to-leading order for nuclear targets. Several modifications to the structure functions are applied to improve the modeling of the cross sections at low energies where perturbative QCD is less accurate and at energies above 104 GeV where there is nonnegligible top quark production and small-x logarithms need to be resummed. Using the Fixed-order nextto-leading logarithm (FONLL) general-mass variable-flavor number scheme, we account for heavy quark mass effects and separate the heavy flavor components of the structure functions, obtaining predictions of their relative contributions to the cross sections and the uncertainties arising from the parton distribution functions. Additionally, the effects of final state radiation are implemented in the calculation of the doubledifferential cross section and discussed in terms of their impact on measurements at neutrino telescopes.
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Sobczyk, J. E., & Nieves, J. (2025). Neutrino and antineutrino charged-current multinucleon cross sections reexamined. Phys. Rev. C, 111(2), 025502–15pp.
Abstract: In this work we improve on several aspects of the computation of the (anti)neutrino charged-current multinuimportantly, we implement a consistent treatment of the nucleon self-energy in the W +/- N -* N'7r amplitude entering the definition of the two-particle two-hole (2p2h) cross section, and estimate the source of uncertainty of our model due to a simplified treatment of the A self-energy. Our new predictions are around 40% higher than previously. We show comparisons for the inclusive lepton double-differential cross sections, with no pions in the final state, measured by MiniBooNE on carbon and by T2K on carbon and oxygen. In all cases, we find an excellent reproduction of the experiments, and in particular, the neutrino MiniBooNE data is now well described without requiring a global 90% rescaling of the flux. In addition, we take the opportunity of this revision to discuss in detail several important issues of the calculation of the 2p2h cross section, delving into the microscopic dynamics of the multi-nucleon mechanisms. The improved treatment presented in this work provides realistic first-step emitted two-nucleon final-state momentum configurations, beyond the approximation of phase-space distributions. Finally, we also show that these new 2p2h results are now closer to those obtained by the Lyon group in Phys. Rev. C 80, 065501 (2009) and Phys. Rev. C 84, 055502 (2011), which can be now accommodated within the uncertainties of our scheme, thus ending a longstanding discrepancy between both sets of theoretical predictions.
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ATLAS Collaboration(Aad, G. et al), Aikot, A., Amos, K. R., Bouchhar, N., Cabrera Urban, S., Cantero, J., et al. (2024). Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at √s= 7 TeV. Eur. Phys. J. C, 84, 1309–36pp.
Abstract: Proton-proton data recorded by the ATLAS detector in 2011, at a centre-of-mass energy of 7 TeV, have been used for an improved determination of the W-boson mass and a first measurement of the W-boson width at the LHC. Recent fits to the proton parton distribution functions are incorporated in the measurement procedure and an improved statistical method is used to increase the measurement precision. The measurement of the W-boson mass yields a value of mW=80366.5±9.8(stat.)±12.5(syst.) MeV = 80366.5±15.9 MeV, and the width is measured as ΓW=2202±32(stat.)±34(syst.) MeV = 2202±47 MeV. The first uncertainty components are statistical and the second correspond to the experimental and physics-modelling systematic uncertainties. Both results are consistent with the expectation from fits to electroweak precision data. The present measurement of mW is compatible with and supersedes the previous measurement performed using the same data.
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ATLAS Collaboration(Aad, G. et al), Aikot, A., Amos, K. R., Bouchhar, N., Cabrera Urban, S., Cantero, J., et al. (2024). Search for heavy neutral Higgs bosons decaying into a top quark pair in 140 fb−1 of proton-proton collision data at √s=13 TeV with the ATLAS detector. J. High Energy Phys., 08, 013–75pp.
Abstract: A search for heavy pseudo-scalar (A) and scalar (H) Higgs bosons decaying into a top-quark pair (tt¯) has been performed with 140 fb−1 of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of s√=13 TeV. Interference effects between the signal process and Standard Model (SM) tt¯ production are taken into account. Final states with exactly one or exactly two electrons or muons are considered. No significant deviation from the SM prediction is observed. The results of the search are interpreted in the context of a two-Higgs-doublet model (2HDM) of type II in the alignment limit with mass-degenerate pseudo-scalar and scalar Higgs bosons (mA=mH) and the hMSSM parameterisation of the minimal supersymmetric extension of the Standard Model. Ratios of the two vacuum expectation values, tanβ, smaller than 3.49 (3.16) are excluded at 95% confidence level for mA=mH=400 GeV in the 2HDM (hMSSM). Masses up to 1240 GeV are excluded for the lowest tested tanβ value of 0.4 in the 2HDM. In the hMSSM, masses up to 950 GeV are excluded for tanβ=1.0. In addition, generic exclusion limits are derived separately for single scalar and pseudo-scalar states for different choices of their mass and total width.
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DUNE Collaboration(Abud, A. A. et al), Amar Es-Sghir, H., Amedo, P., Antonova, M., Barenboim, G., Benitez Montiel, C., et al. (2024). Performance of a modular ton-scale pixel-readout liquid argon time projection chamber. Instruments, 8, 41–45pp.
Abstract: The Module-0 Demonstrator is a single-phase 600 kg liquid argon time projection chamber operated as a prototype for the DUNE liquid argon near detector. Based on the ArgonCube design concept, Module-0 features a novel 80k-channel pixelated charge readout and advanced high-coverage photon detection system. In this paper, we present an analysis of an eight-day data set consisting of 25 million cosmic ray events collected in the spring of 2021. We use this sample to demonstrate the imaging performance of the charge and light readout systems as well as the signal correlations between the two. We also report argon purity and detector uniformity measurements and provide comparisons to detector simulations.
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