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An Improved Measurement Of The Muon Neutrino Charged Current Quasi Elastic Cross Section On Hydrocarbon At Minerva
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Book Synopsis An Improved Measurement of the Muon Neutrino Charged Current Quasi-elastic Cross-section on Hydrocarbon at Minerva by : Dun Zhang
Download or read book An Improved Measurement of the Muon Neutrino Charged Current Quasi-elastic Cross-section on Hydrocarbon at Minerva written by Dun Zhang and published by . This book was released on 2017 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrino interactions in the detectors of long baseline oscillation experiments are analyzed to determine the neutrino flavor and energy spectrum, allowing the neutrino mass ordering and mixing parameters to be determined. For neutrino interactions below the pion production threshold, the dominant reaction is charged current quasi-elastic (CCQE) scattering. Oscillation experiments are made of heavy nuclei so the QE process occurs on nucleons that are embedded in the nuclear environment. Predictions of the QE cross-section suffer from significant uncertainties due to our understanding of that nuclear environment and the way it is probed by the weak interaction. I have developed a new technique to reduce the inelastic background to CCQE process by identifying the "Michel electrons" produced by pions. Additionally an updated neutrino flux was used to extract the cross-section and estimates for some sources of systematic uncertainties have been improved. The measured cross-section is compared to several theoretical models and the effect that the signal definition ("CCQE" vs "CCQE-like") has on the measurement is also explored.
Book Synopsis Measurement of the Muon Neutrino Double-Differential Charged Current Quasi-Elastic Like Cross Section on a Hydrocarbon Target at Ev ~ 3.5 GeV. by :
Download or read book Measurement of the Muon Neutrino Double-Differential Charged Current Quasi-Elastic Like Cross Section on a Hydrocarbon Target at Ev ~ 3.5 GeV. written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The MINERvA Experiment (Main Injector Experiment v A interaction) [1] is a highly segmented detector of neutrinos, able to record events with high precision (over than thirteen million event in a four year run), using the NuMI Beam (Neutrino Main Injector) at the Fermi National Accelerator Laboratory [2]. This thesis presents a measurement of the Charged Current Quasi-Elastic Like1 v[mu] interaction on polystyrene scintillator (CH) in the MINERvA experiment with neutrino energies between 1.5 and 10 GeV. We use data taken between2 March 2010 and April 2012. The interactions were selected by requiring a negative muon, a reconstructed and identified proton, no michel electrons in the final state (in order to get rid of soft pions decaying) and a low calorimetric recoil energy away from the interaction vertex. The analysis is performed on 66,214 quasi-elastic like event candidates in the detectors tracker region with an estimated purity of 74%. The final measurement reported is a double differential cross sections in terms of the muon longitudinal and transversal momentum observables.
Book Synopsis A Measurement of the Muon Neutrino Charged Current QuasiElastic-Like Cross Section on a Hydrocarbon Target and Final State Interaction Effects by : Tammy Walton
Download or read book A Measurement of the Muon Neutrino Charged Current QuasiElastic-Like Cross Section on a Hydrocarbon Target and Final State Interaction Effects written by Tammy Walton and published by . This book was released on 2014 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Measurement of the Two-track Charged Current Quasi-elastic Cross Section with the MINERvA by : Benjamin Ziemer
Download or read book A Measurement of the Two-track Charged Current Quasi-elastic Cross Section with the MINERvA written by Benjamin Ziemer and published by . This book was released on 2012 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MINERvA detector collected 1.2 x 1020 POT of muon neutrino data with the NuMI beam at Fermi National Laboratory from 03/2010 to 07/2010. I will describe an analysis to identify two track charged current muon neutrino quasi-elastic interactions using this data set. The final state muon was identified by curvature using the MINOS detector. The final state contained proton was identified by the energy deposited per unit length at the end of the track. Two additional cuts were applied to separate signal from background: a cut on the extra energy in the event and a cut on a proton energy dependent variable. The differential cross section using this selection is presented. An initial list of systematic errors is introduced and calculated. In addition to this analysis work, I also developed both pattern recognition schemes used by the experiment, wrote MINOS muon track matching algorithms, implemented a Kalman Filter track fitting algorithm and contributed to various other tasks to the MINERvA experiment; I will provide an explanation of these. I will also give a brief overview of neutrino physics, the NuMI beam, and the MINERvA detector.
Book Synopsis A Measurement of the Muon Neutrino Charged Current Quasielastic-like Cross Section on a Hydrocarbon Target and Final State Interaction Effects by :
Download or read book A Measurement of the Muon Neutrino Charged Current Quasielastic-like Cross Section on a Hydrocarbon Target and Final State Interaction Effects written by and published by . This book was released on 2014 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented is the analysis of the [mu] charged-current quasielastic-like interaction with a polystyrene (CH or hydrocarbon) target in the MINER A experiment, which was exposed to a neutrino beam that peaked at 3.5 GeV.
Book Synopsis Measurement of Muon Neutrino Charged Current Single $\pi^0$ Production on Hydrocarbon Using MINERvA. by :
Download or read book Measurement of Muon Neutrino Charged Current Single $\pi^0$ Production on Hydrocarbon Using MINERvA. written by and published by . This book was released on 2017 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: A sample of charged-current single pion production events for the semi- exclusive channel [nu]æ + CH 2!æ-[pi]0 + nucleon(s) has been obtained using neutrino exposures of the MINERvA detector. Differential cross sections for muon momentum, muon production angle, pion momentum, pion production angle, and four-momentum transfer square Q2 are reported and are compared to a GENIE-based simulation. The cross section versus neutrino energy is also re- ported. The effects of pion final-state interactions on these cross sections are investigated. The effect of baryon resonance suppression at low Q2 is examined and an event re-weight used by two previous experiments is shown to improve the data versus simulation agreement. The differential cross sections for Q2 for E[nu]
Book Synopsis First Measurement of the Muon Neutrino Charged Current Quasielastic Double Differential Cross Section by :
Download or read book First Measurement of the Muon Neutrino Charged Current Quasielastic Double Differential Cross Section written by and published by . This book was released on 2010 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high-statistics sample of charged-current muon neutrino scattering events collected with the MiniBooNE experiment is analyzed to extract the first measurement of the double differential cross section (d2?/dT{sub {mu}}d cos?{sub {mu}}) for charged-current quasielastic (CCQE) scattering on carbon. This result features minimal model dependence and provides the most complete information on this process to date. With the assumption of CCQE scattering, the absolute cross section as a function of neutrino energy (?[E{sub {nu}}]) and the single differential cross section (d?/dQ2) are extracted to facilitate comparison with previous measurements. These quantities may be used to characterize an effective axial-vector form factor of the nucleon and to improve the modeling of low-energy neutrino interactions on nuclear targets. The results are relevant for experiments searching for neutrino oscillations.
Book Synopsis Electron Neutrino Charged-Current Quasielastic Scattering in the MINERvA Experiment by :
Download or read book Electron Neutrino Charged-Current Quasielastic Scattering in the MINERvA Experiment written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The electron-neutrino charged-current quasielastic (CCQE) cross section on nuclei is an important input parameter for electron neutrino appearance oscillation experiments. Current experiments typically begin with the muon neutrino cross section and apply theoretical corrections to obtain a prediction for the electron neutrino cross section. However, at present no experimental verification of the estimates for this channel at an energy scale appropriate to such experiments exists. We present the cross sections for a CCQE-like process determined using the MINERvA detector, which are the first measurements of any exclusive reaction in few-GeV electron neutrino interactions. The result is given as differential cross-sections vs. the electron energy, electron angle, and square of the four-momentum transferred to the nucleus, $Q^{2}$. We also compute the ratio to a muon neutrino cross-section in $Q^{2}$ from MINERvA. We find satisfactory agreement between these measurements and the predictions of the GENIE generator. We furthermore report on a photon-like background unpredicted by the generator which we interpret as neutral-coherent diffractive scattering from hydrogen.
Book Synopsis Anti-neutrino Charged Current Quasi-elastic Scattering in MINERvA by : Jesse Chvojka
Download or read book Anti-neutrino Charged Current Quasi-elastic Scattering in MINERvA written by Jesse Chvojka and published by . This book was released on 2012 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The phenomenon of neutrino oscillation is becoming increasingly understood with results from accelerator-based and reactor-based experiments, but unanswered questions remain. The proper ordering of the neutrino mass eigenstates that compose the neutrino flavor eigenstates is not completely known. We have yet to detect CP violation in neutrino mixing, which if present could help explain the asymmetry between matter and anti-matter in the universe. We also have not resolved whether sterile neutrinos, which do not interact in any Standard Model interaction, exist. Accelerator-based experiments appear to be the most promising candidates for resolving these questions; however, the ability of present and future experiments to provide answers is likely to be limited by systematic errors. A significant source of this systematic error comes from limitations in our knowledge of neutrino-nucleus interactions. Errors on cross-sections for such interactions are large, existing data is sometimes contradictory, and knowledge of nuclear effects is incomplete. One type of neutrino interaction of particular interest is charged current quasi-elastic (CCQE) scattering, which yields a final state consisting of a charged lepton and nucleon. This process, which is the dominant interaction near energies of 1 GeV, is of great utility to neutrino oscillation experiments since the incoming neutrino energy and the square of the momentum transferred to the final state nucleon, Q2, can be reconstructed using the final state lepton kinematics. To address the uncertainty in our knowledge of neutrino interactions, many experiments have begun making dedicated measurements. In particular, the MINERvA experiment is studying neutrino-nucleus interactions in the few GeV region. MINERvA is a fine-grained, high precision, high statistics neutrino scattering experiment that will greatly improve our understanding of neutrino cross-sections and nuclear effects that affect the final state particles in neutrino interactions. We present the first cross-section measurement for MINERvA, the differential cross-section d[sigma]/dQ2 for muon anti-neutrino CCQE scattering on polystyrene scintillator (CH) as well as comparisons to several final state models"--Page v-vi.
Book Synopsis Measurement of the ?? Charged Current ?+ to Quasi-Elastic Cross Section Ratio on Mineral Oil in a 0.8 GeV Neutrino Beam by :
Download or read book Measurement of the ?? Charged Current ?+ to Quasi-Elastic Cross Section Ratio on Mineral Oil in a 0.8 GeV Neutrino Beam written by and published by . This book was released on 2011 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Charged current single pion production (CC?+) and charged current quasi-elastic scattering (CCQE) are the most abundant interaction types for neutrinos at energies around 1 GeV, a region of great interest to oscillation experiments. The cross-sections for these processes, however, are not well understood in this energy range. This dissertation presents a measurement of the ratio of CC?+ to CCQE cross-sections for muon neutrinos on mineral oil (CH2) in the MiniBooNE experiment. The measurement is presented here both with and without corrections for hadronic re-interactions in the target nucleus and is given as a function of neutrino energy in the range 0.4 GeV Esub?/sub 2.4 GeV. With more than 46,000 CC?sup+/sup events collected in MiniBooNE, and with a fractional uncertainty of roughly 11% in the region of highest statistics, this measurement represents a dramatic improvement in statistics and precision over previous CC?
Book Synopsis Measurement of Muon Neutrino Quasi-Elastic-Like Scattering on a Hydrocarbon Target at ${\bf E_{\nu}} \sim $ 6 GeV. by :
Download or read book Measurement of Muon Neutrino Quasi-Elastic-Like Scattering on a Hydrocarbon Target at ${\bf E_{\nu}} \sim $ 6 GeV. written by and published by . This book was released on 2016 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: The MINERA Experiment (Main Injector Experiment $\nu$ -A interaction) is a highly segmented detector of neutrinos, able to record events with high precision using the NuMI Beam (Neutrino Main Injector) at the Fermi National Accelerator Laboratory. In this thesis, we present the rst measurement of the charged current quasi-elastic-like interaction on polystyrene scintillator (CH) in the MINERA detector at neutrino energies around 6 GeV. The dataset used was taken between 2013 and 2014 with a total of 1:17 x $10^{21}$ protons on target. The interactions were selected by requiring a negative muon, a reconstructed and identied proton, no michel electrons in the nal state (in order to get rid of soft pions decaying) and a low calorimetric recoil energy away from the interaction vertex. The nal measurement reported is a dierential cross section in terms of the muon quadratic transfered energy $Q^{2}$.
Book Synopsis Measurement of the [nu][mu] Charged Current [pi]+ to Quasi-Elastic Cross Section Ratio on Mineral Oil in a 0.8 GeV Neutrino Beam by :
Download or read book Measurement of the [nu][mu] Charged Current [pi]+ to Quasi-Elastic Cross Section Ratio on Mineral Oil in a 0.8 GeV Neutrino Beam written by and published by . This book was released on 2011 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: Charged current single pion production (CC[pi]+) and charged current quasi-elastic scattering (CCQE) are the most abundant interaction types for neutrinos at energies around 1 GeV, a region of great interest to oscillation experiments. The cross-sections for these processes, however, are not well understood in this energy range. This dissertation presents a measurement of the ratio of CC[pi]+ to CCQE cross-sections for muon neutrinos on mineral oil (CH2) in the MiniBooNE experiment. The measurement is presented here both with and without corrections for hadronic re-interactions in the target nucleus and is given as a function of neutrino energy in the range 0.4 GeV
Download or read book Muon Neutrino CCQE at MINERvA. written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A precise understanding of quasi-elastic interactions is crucial to measure neutrino oscillations. The MINERvA experiment is currently working on different analyses of muon neutrino charged current quasi-elastic interactions. Here, we present updates to the previous quasi-elastic measurement, using a new flux, and we present the status of several analyses in progress; including double differential cross sections, a study of final state interactions using a sample with muon and a proton and the status of the CCQE analysis in the medium energy neutrino beam.
Book Synopsis A Measurement of the Muon Neutrino Charged Current Quasielastic Interaction and a Test of Lorentz Violation with the MiniBooNE Experiment by :
Download or read book A Measurement of the Muon Neutrino Charged Current Quasielastic Interaction and a Test of Lorentz Violation with the MiniBooNE Experiment written by and published by . This book was released on 2008 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mini-Booster neutrino experiment (MiniBooNE) at Fermi National Accelerator Laboratory (Fermilab) is designed to search for [nu]{sub [mu]} → [nu]{sub e} appearance neutrino oscillations. Muon neutrino charged-current quasi-elastic (CCQE) interactions ([nu]{sub {mu}} + n → {mu} + p) make up roughly 40% of our data sample, and it is used to constrain the background and cross sections for the oscillation analysis. Using high-statistics MiniBooNE CCQE data, the muon-neutrino CCQE cross section is measured. The nuclear model is tuned precisely using the MiniBooNE data. The measured total cross section is [sigma] = (1.058 ± 0.003 (stat) ± 0.111 (syst)) x 10−38 cm2 at the MiniBooNE muon neutrino beam energy (700-800 MeV). [nu]{sub e} appearance candidate data is also used to search for Lorentz violation. Lorentz symmetry is one of the most fundamental symmetries in modern physics. Neutrino oscillations offer a new method to test it. We found that the MiniBooNE result is not well-described using Lorentz violation, however further investigation is required for a more conclusive result.
Book Synopsis Measurement of the Charged-Current Quasi-Elastic Cross-Section for Electron Neutrinos on a Hydrocarbon Target by :
Download or read book Measurement of the Charged-Current Quasi-Elastic Cross-Section for Electron Neutrinos on a Hydrocarbon Target written by and published by . This book was released on 2015 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Muon Neutrino Charged Current Pion Production to Quasi-elastic Cross Section Ratio on Mineral Oil in a 0.8 Gev Neutrino Beam by : Steven K. Linden
Download or read book Measurement of the Muon Neutrino Charged Current Pion Production to Quasi-elastic Cross Section Ratio on Mineral Oil in a 0.8 Gev Neutrino Beam written by Steven K. Linden and published by . This book was released on 2011 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Antineutrino Double-Differential Charged-Current Quasi-Elastic Scattering Cross Section at MINERvA by : Cheryl E. Patrick
Download or read book Measurement of the Antineutrino Double-Differential Charged-Current Quasi-Elastic Scattering Cross Section at MINERvA written by Cheryl E. Patrick and published by Springer. This book was released on 2017-11-15 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis represents the first double differential measurement of quasi-elastic anti-neutrino scattering in the few GeV range--a region of substantial theoretical and experimental interest as it is the kinematic region where studies of charge-parity (CP) violation in the neutrino sector most require precise understanding of the differences between anti-neutrino and neutrino scatter. This dissertation also presents total antineutrino-scintillator quasi-elastic cross sections as a function of energy, which is then compared to measurements from previous experiments. Next-generation neutrino oscillation experiments, such as DUNE and Hyper-Kamiokande, hope to measure CP violation in the lepton sector. In order to do this, they must dramatically reduce their current levels of uncertainty, particularly those due to neutrino-nucleus interaction models. As CP violation is a measure of the difference between the oscillation properties of neutrinos and antineutrinos, data about how the less-studied antineutrinos interact is especially valuable. The measurement described herewith determines the nuclear and instrumental effects that must be understood to undertake precision neutrino physics. As well as being useful to help reduce oscillation experiments' uncertainty, this data can also be used to study the prevalence of various correlation and final-state interaction effects within the nucleus. In addition to being a substantial scientific advance, this thesis also serves as an outstanding introduction to the field of experimental neutrino physics for future students.
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