Ana Lozano

Instituto de Física Fundamental

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Co-Authors

P. Limão-Vieira

Universidade Nova de Lisboa

G. Garcı́a

Consejo Superior de Investigaciones Científicas

K. S. McFarland

University of Rochester

J. Félix

Universidad de Guanajuato

J. K. Nelson

William & Mary

R. Gran

University of Minnesota, Duluth

M. A. Ramírez

California University of Pennsylvania

S. Manly

University of Rochester

L. Fields

University of Notre Dame

C. Nguyen

Rutgers, The State University of New Jersey

Cooperative Institutions

Minerva Foundation

Fermi National Accelerator Laboratory

University of Rochester

University of Almería

Flinders University

University of Buenos Aires

Consejo Superior de Investigaciones Científicas

Centre National de la Recherche Scientifique

Universidade Nova de Lisboa

Williams (United States)

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Valence and Rydberg excitations of 2-fluorotoluene in the 4.4–10.8 eV photoabsorption energy region

Journal of Quantitative Spectroscopy and Radiative Transfer (2023)

Pedro A. S. Randi Sarvesh Kumar Ana Lozano M. H. F. Bettega Søren Vrønning Hoffmann

The electronic state spectroscopy of 2-fluorotoluene in the gas phase has been investigated for the first time using high-resolution vacuum ultraviolet photoabsorption experiments in the 4.4–10.8 eV energy-range, with absolute cross-section measurements obtained. Additionally, we also present a novel set of ab initio calculations (vertical excitation energies and oscillator strengths) at two different levels of theory, equation-of-motion coupled-cluster singles and doubles (EOM-CCSD) and time-dependent density functional theory (TD-DFT). These are used in the assignment of valence, mix valence-Rydberg and Rydberg transitions, with the associated vibronic series analysed. The measured absolute photoabsorption cross-sections have been used to calculate the photolysis lifetime of 2-fluorotoluene in the Earth's atmosphere.

Rydberg constant

Coupled cluster

Rydberg state

10.1016/j.jqsrt.2023.108597

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La enseñanza de la historia de la arquitectura en el nivel primario para reconocer y valorar el patrimonio cultural propio

Ana Lozano María Florencia Murillo Dasso

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Descriptivo II. Factores que pueden influir en el tipo de alimentación: parto, periodo neonatal y cuestionario sobre lactancia. Estudio prospectivo de una cohorte de 2066 niños

B. Domínguez Aurrecoechea A. García Merino Ma Carmen Jiménez Ana Lozano Ma Belén Panizo Santos

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Miniaturisation and optimisation of the Dutch mini-Luke extraction method for implementation in the routine multi-residue analysis of pesticides in fruits and vegetables

Food Chemistry (2015)

Ana Lozano Barbara Kiedrowska Jos Scholten Marijke de Kroon A. Kok

Dichloromethane

Matrix (chemical analysis)

Residue (chemistry)

Sample Preparation

10.1016/j.foodchem.2015.07.065

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Citations (41)

Measurement of Electron Neutrino and Antineutrino Cross Sections at Low Momentum Transfer

arXiv (Cornell University) (2023)

Sarah Henry H. Su S. Akhter Z. Ahmad Dar V. Ansari

Accelerator based neutrino oscillation experiments seek to measure the relative number of electron and muon neutrinos and antineutrinos at different $L/E$ values. However high statistics studies of neutrino interactions are almost exclusively measured using muon neutrinos and antineutrinos since the dominant flavor of neutrinos produced by accelerator based beams are of the muon type. This work reports new measurements of electron neutrino and antineutrino interactions in hydrocarbon, obtained by strongly suppressing backgrounds initiated by muon flavor neutrinos and antineutrinos. Double differential cross sections as a function of visible energy transfer, $E_\text{avail}$, and transverse momentum transfer, $p_T$, or three momentum transfer, $q_3$ are presented.

Electron neutrino

Muon neutrino

Momentum transfer

10.48550/arxiv.2312.16631

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Use of Neutrino Scattering Events with Low Hadronic Recoil to Inform Neutrino Flux and Detector Energy Scale

arXiv (Cornell University) (2021)

A. Bashyal D. Rimal B. Messerly Z. Ahmad Dar F. Akbar

Charged-current neutrino interactions with low hadronic recoil (low-nu) have a cross-section that is approximately constant versus neutrino energy. These interactions have been used to measure the shape of neutrino fluxes as a function of neutrino energy at accelerator-based neutrino experiments such as CCFR, NuTeV, MINOS and MINERvA. In this paper, we demonstrate that low-nu events can be used to measure parameters of neutrino flux and detector models and that utilization of event distributions over the upstream detector face can discriminate among parameters that affect the neutrino flux model. From fitting a large sample of low-nu events obtained by exposing MINERvA to the NuMI medium-energy beam, we find that the best-fit flux parameters are within their a priori uncertainties, but the energy scale of muons reconstructed in the MINOS detector is shifted by 3.6% (or 1.8 times the a priori uncertainty on that parameter). These fit results are now used in all MINERvA cross-section measurements, and this technique can be applied by other experiments operating at MINERvA energies, such as DUNE.

MINOS

Recoil

Muon neutrino

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Total electron scattering cross sections from Benzene

L. Álvarez F. Costa Ana Lozano P. Limão-Vieira G. Garcı́a

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Measurement of the Multi-Neutron $\barν_μ$ Charged Current Differential Cross Section at Low Available Energy on Hydrocarbon

arXiv (Cornell University) (2023)

A. Olivier T. Cai S. Akhter Z. Ahmad Dar V. Ansari

Neutron production in antineutrino interactions can lead to bias in energy reconstruction in neutrino oscillation experiments, but these interactions have rarely been studied. MINERvA previously studied neutron production at an average antineutrino energy of ~3 GeV in 2016 and found deficiencies in leading models. In this paper, the MINERvA 6 GeV average antineutrino energy data set is shown to have similar disagreements. A measurement of the cross section for an antineutrino to produce two or more neutrons and have low visible energy is presented as an experiment-independent way to explore neutron production modeling. This cross section disagrees with several leading models' predictions. Neutron modeling techniques from nuclear physics are used to quantify neutron detection uncertainties on this result.

Bar (unit)

Oscillation (cell signaling)

10.48550/arxiv.2310.17014

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Neutrino-Induced Coherent π+ Production in C, CH, Fe, and Pb at ⟨Eν

Physical Review Letters (2023)

M. A. Ramírez S. Akhter Z. Ahmad Dar F. Akbar V. Ansari

MINERvA has measured the ν_{μ}-induced coherent π^{+} cross section simultaneously in hydrocarbon (CH), graphite (C), iron (Fe), and lead (Pb) targets using neutrinos from 2 to 20 GeV. The measurements exceed the predictions of the Rein-Sehgal and Berger-Sehgal PCAC based models at multi-GeV ν_{μ} energies and at produced π^{+} energies and angles, E_{π}>1 GeV and θ_{π}<10°. Measurements of the cross-section ratios of Fe and Pb relative to CH reveal the effective A scaling to increase from an approximate A^{1/3} scaling at few GeV to an A^{2/3} scaling for E_{ν}>10 GeV.

10.1103/physrevlett.131.051801

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Citations (3)

Screening of pesticide residues in honeybee wax comb by LC-ESI-MS/MS. A pilot study

Chemosphere (2016)

Sonia Herrera Ana Lozano A. Sosa Marı́a Dolores Hernando Amadeo R. Fernández‐Alba

QuEChERS

Amitraz

Residue (chemistry)

Triadimefon

Coumaphos

Beeswax