Licenciatura en Física 2018: Carlos Javier Solano Salinas

Licenciatura en Física (12 de noviembre de 2018 en la Facultad de Ciencias de la UNI)

Tesista: Carlos Javier Solano Salinas

Asesor: Dr. Rosendo Ochoa Jiménez

Titulo de la tesis: “ESTUDIOS DE ASIMETRIAS Y POLARIZACION DE HYPERONS, y CALCULO DEL RADIO R = BR(D0→Kπππ)/BR(D0→Kπ) EN INTERACCIONES π− – NUCLEO A 500GeV/c EN EL EXPERIMENTO E791 DEL FERMILAB”

Resumen: En este trabajo estudiamos, diseñamos, clasificamos y usamos técnicas de análisis de asimetría y de polarización de partículas con estrañeza (hyperons): Λ, Ξ, Ω, en el experimento E791 en el laboratorio FERMILAB, EEUU. El E791 es un experimento de blanco fijo, de hadroproducción de partículas con charm y/o estrañeza en interacciones π− de 500 GeV/c – Núcleo. El análisis se apoya en simulación de la geometría del experimento y generación MC de los eventos. Como parte del trabajo se revisarán resultados del E791 en estudios de asimetría y de polarización en hadroproduccion de partículas con charm y/o estrañeza y se presentarán resultados inéditos sobre la polarización de hyperons cascada en dicho tipo de experimentos. Además, como parte de un plan para medir la seccin transversal total y diferencial del meson charmoso D0, trabajamos con sus dos principales modos de decaimiento. La idea no es medir directamente la seccin transversal absoluta, sino medirlas con respecto a una sección transversal D0, ya medida en este experimento E791. Demostraremos el valor de la técnica de razones de ramificación mostrando datos in´editos para el valor de R = BR(D0→Kπππ)/BR(D0→Kπ) . Hemos usado datos del experimento E791. Para este estudio la UNI participó de una colaboración internacional con el laboratorio FERMILAB de EEUU, y con el Centro Brasileiro de Pesquisas Físicas de Brasil.

Tesis: lic-cjss-ag2018

y presentación: Presentacion tesis lic 2018

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Publicación 2018: Measurement of final-state correlations in neutrino muon-proton mesonless production on hydrocarbon at ⟨Eν⟩=3 GeV

Titulo:Measurement of final-state correlations in neutrino muon-proton mesonless production on hydrocarbon at ⟨Eν⟩=3 GeV

Autores: C. J. Solano Salinas y colaboración MINERvA (del FERMILAB de EEUU)

Physical Review Letters
Vol 121 (2018), 022504
Published by American Physical Society
doi: 10.1103/PhysRevLett.121.022504

Abstract: Final-state kinematic imbalances are measured in mesonless production of νμ → μX in the MINERvA tracker. Initial- and final-state nuclear effects are probed using the direction of the μ− p transverse momentum imbalance and the initial-state momentum of the struck neutron. Differential cross sections are compared to predictions based on current approaches to medium modeling. These models underpredict the cross section at intermediate intranuclear momentum transfers that generally exceed the Fermi momenta. As neutrino interaction models need to correctly incorporate the effect of the nucleus in order to predict neutrino energy resolution in oscillation experiments, this result points to a region of phase space where additional cross section strength is needed in current models, and demonstrates a new technique that would be suitable for use in fine-grained liquid argon detectors where the effect of the nucleus may be even larger.

PRL121.022504.2018

Publicación 2018: Antineutrino Charged-Current Reactions on Hydrocarbon with Low Momentum Transfer

Titulo:Antineutrino Charged-Current Reactions on Hydrocarbon with Low Momentum Transfer

Autores: C. J. Solano Salinas y colaboración MINERvA (del FERMILAB de EEUU)

Physical Review Letters
Vol 120 (2018), 221805
Published by American Physical Society
doi: 10.1103/PhysRevLett.120.221805

Abstract: We report on multinucleon effects in low momentum transfer (<0.8GeV/c) antineutrino interactions on plastic (CH) scintillator. These data are from the 2010–2011 antineutrino phase of the MINERvA experiment at Fermilab. The hadronic energy spectrum of this inclusive sample is well described when a screening effect at a low energy transfer and a two-nucleon knockout process are added to a relativistic Fermi gas model of quasielastic, Δ resonance, and higher resonance processes. In this analysis, model elements introduced to describe previously published neutrino results have quantitatively similar benefits for this antineutrino sample. We present the results as a double-differential cross section to accelerate the investigation of alternate models for antineutrino scattering off nuclei.

PRL120.221805.2018

 

Publicación 2018: Measurement of the Muon Antineutrino Double-Differential Cross Section for Quasielastic-like Scattering on Hydrocarbon at Eν∼3.5GeV

Titulo: Measurements of the Muon Antineutrino Double-Differential Cross Section for Quasielastic-like Scattering on Hydrocarbon at Eν∼3.5GeV

Autores: C. J. Solano Salinas y colaboración MINERvA (del FERMILAB de EEUU)

Physical Review D
Vol 97 (2018), 052002
Published by American Physical Society
doi: 10.1103/PhysRevD.97.052002

Abstract: We present double-differential measurements of antineutrino charged-current quasielastic scattering in the MINERvA detector. This study improves on a previous single-differential measurement by using updated reconstruction algorithms and interaction models and provides a complete description of observed muon kinematics in the form of a double-differential cross section with respect to muon transverse and longitudinal momentum. We include in our signal definition zero-meson final states arising from multinucleon interactions and from resonant pion production followed by pion absorption in the primary nucleus. We find that model agreement is considerably improved by a model tuned to MINERvA inclusive neutrino scattering data that incorporates nuclear effects such as weak nuclear screening and two-particle, two-hole enhancements.

PhysRevD.97.052002.2018

Publicación 2018: Measurement of total and differential cross sections of neutrino and antineutrino coherent π± production on carbon

Titulo: Measurement of total and differential cross sections of neutrino and antineutrino coherent π± production on carbon

Autores: C. J. Solano Salinas y colaboración MINERvA (del FERMILAB de EEUU)

Physical Review D
Vol 97 (2018), 032014
Published by American Physical Society
doi: 10.1103/PhysRevD.97.032014

Abstract: Neutrino induced coherent charged pion production on nuclei, ¯νμ Aμ± π∓ A, is a rare inelastic interaction in which the four-momentum squared transferred to the nucleus is nearly zero, leaving it intact. We identify such events in the scintillator of MINERvA by reconstructing |t| from the final state pion and muon momenta and by removing events with evidence of energetic nuclear recoil or production of other final state particles. We measure the total neutrino and antineutrino cross sections as a function of neutrino energy between 2 and 20 GeV and measure flux integrated differential cross sections as a function of Q2, Eπ, and θπ. The Q2 dependence and equality of the neutrino and antineutrino cross sections at finite Q2 provide a confirmation of Adler’s partial conservation of axial current hypothesis.

PhysRevD.97.032014.2018

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XXVII Simposio Peruano de Física: “Participacion peruana en experimentos de neutrinos en FERMILAB-EEUU”

http://www.soperfi.org/web/spf2018/

Mi conferencia: “Participacion peruana en experimentos de neutrinos en FERMILAB-EEUU”

xxvii-spf-24oct18

Small Particles, Big Science: The International LBNF/DUNE Project

 

entrevista a Javier Solano en Ecco Radio, sobre Expociencia 2018

https://www.youtube.com/watch?time_continue=953&v=mSoabr3FuUo

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