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A Study Of Charged Current Single Charged Pion Productions On Carbon In A Few Gev Neutrino Beam
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Book Synopsis A Study of Charged Current Single Charged Pion Productions on Carbon in a Few-GeV Neutrino Beam by :
Download or read book A Study of Charged Current Single Charged Pion Productions on Carbon in a Few-GeV Neutrino Beam written by and published by . This book was released on 2009 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding single charged pion production via neutrino-nucleus charged current interaction in the neutrino energy region of a few GeV is essential for future neutrino oscillation experiments since this process is a dominant background for v[mu] → vx oscillation measurements. There are two contributions to this process: single pion production via baryonic resonance (v[mu]N → [mu]- N[pi]+) and coherent pion production interacting with the entire nucleus (v[mu]A → [mu]- A[pi]+), where N is nucleon in the nucleus and A is the nucleus. The purpose of the study presented in this thesis is a precise measurement of charged current single charged pion productions, resonant and coherent pion productions, with a good final state separation in the neutrino energy region of a few GeV. In this thesis, we focus on the study of charged current coherent pion production from muon neutrinos scattering on carbon, v[mu] 12C → [mu]-12C[pi]+, in the SciBooNE experiment. This is motivated by the fact that without measuring this component first, the precise determination of resonant pion production cross section can not be achieved since the contribution of coherent pion production in the region of small muon scattering angle is not small. Furthermore, the coherent process is particularly interesting because it is deeply rooted in fundamental physics via Adler's partially conserved axial-vector current theorem. We took data from June 2007 until August 2008, in both the neutrino and antineutrino beam. In total, 2.52 x 1020 protons on target were collected. We have performed a search for charged current coherent pion production by using SciBooNE's full neutrino data set, corresponding to 0.99 x 1020 protons on target. No evidence for coherent pion production is observed. We set 90% confidence level upper limits on the cross section ratio of charged current coherent pion production to the total charged current cross section at 0.67 x 10-2 at mean neutrino energy 1.1 GeV and 1.36 x 10-2 at mean neutrino energy 2.2 GeV. We reveal that the Rein-Sehgal model widely used in neutrino oscillation experiments breaks down at the neutrino energy region of a few GeV. This creates active controversies on the model of coherent pion production, and the understanding of coherent pion production is being progressed. In addition, future prospects of measurements of charged current single charged pion production in SciBooNE are discussed.
Book Synopsis Measurement of Neutral Current Neutral Pion Production on Carbon in a Few-GeV Neutrino Beam by :
Download or read book Measurement of Neutral Current Neutral Pion Production on Carbon in a Few-GeV Neutrino Beam written by and published by . This book was released on 2010 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding of the ?0 production via neutrino-nucleus neutral current interaction in the neutrino energy region of a few GeV is essential for the neutrino oscillation experiments. In this thesis, we present a study of neutral current ?0 production from muon neutrinos scattering on a polystyrene (C8H8) target in the SciBooNE experiment. All neutrino beam data corresponding to 0.99 × 1020 protons on target have been analyzed. We have measured the cross section ratio of the neutral current ?0 production to the total charge current interaction and the ?0 kinematic distribution such as momentum and direction. We obtain [7.7 ± 0.5(stat.) ± 0.5(sys.)] × 10-2 as the ratio of the neutral current neutral pion production to total charged current cross section; the mean energy of neutrinos producing detected neutral pions is 1.1 GeV. The result agrees with the Rein- Sehgal model, which is generally used for the Monte Carlo simulation by many neutrino oscillation experiments. We achieve less than 10 % uncertainty which is required for the next generation search for ?æ → ?e oscillation. The spectrum shape of the ?0 momentum and the distribution of the ?0 emitted angle agree with the prediction, which means that not only the Rein-Sehgal model but also the intra-nuclear interaction models describe our data well. We also measure the ratio of the neutral current coherent pion production to total charged current cross section to be (1.17 ± 0.23 ) × 10-2 based on the Rein and Sehgal model. The result gives the evidence for non-zero coherent pion production via neutral current interaction at the mean neutrino energy of 1.0 GeV.
Book Synopsis Muon Neutrino Charged Current Single Pion Production on Various Targets in the MINERvA Detector by : Aaron Bercellie
Download or read book Muon Neutrino Charged Current Single Pion Production on Various Targets in the MINERvA Detector written by Aaron Bercellie and published by . This book was released on 2022 with total page 795 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Measurements of neutrino oscillation parameters at accelerator-based experiments require precise knowledge of neutrino interaction cross sections. A significant fraction of neutrino interactions observed in these experiments produce single charged pions. While single charged pion production has been measured on hydrocarbon and water, few precise measurements exist for heavier targets, and there are no high statistics measurements that directly compare pion production on different targets. This thesis measures differential cross sections of muon neutrino charged current single charged pion production with no other mesons in the final state in a neutrino beam with a mean energy of ~ 6 GeV. The pion production is studied on targets of scintillator, carbon, water, iron, and lead at MINERvA, a neutrino cross section experiment located in the NuMI beamline at Fermilab. These measured cross sections are differential in [mu]- and [pi]+ kinematics. A strong suppression of low Q2 and an enhancement of low T[Pi] are observed relative to commonly used neutrino interaction models in both the light and heavy nuclear targets. Incorporation of these observed effects in future neutrino oscillation experiments will improve their ability to measure energy of neutrino interactions, and therefore measure the parameters governing neutrino oscillations."--Page xii
Book Synopsis Development Towards a Model-dependent Measurement of the Muon Neutrino Charged Current Single Pi-plus Pion Momentum Spectrum by : Kevin Thomas Connolly
Download or read book Development Towards a Model-dependent Measurement of the Muon Neutrino Charged Current Single Pi-plus Pion Momentum Spectrum written by Kevin Thomas Connolly and published by . This book was released on 2014 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis the development and study of a method for a model-dependent measurement of the muon neutrino charged current (CC) single pion interaction's positive pion momentum spectrum is proposed. The measurement is part of the Tokai-to-Kamioka (T2K) experiment and was performed in Tokai at the near detector hall, using an event selection from a fine-grained detector (FGD) on a carbon target. The T2K neutrino beam has a peak energy of about 0.6 GeV, and the near detector is located 280 m downstream from the proton beam target. Data from 5.9 x10^20 protons on target was collected and used in a CC-inclusive and CC-exclusive event selection. The inclusive event selection contains about 25,000 CC muon neutrino events, and was subdivided into a single positively charged pion production channel (CC-1-pion) and a CC multi-pion interaction channel (CC-other). The official event selection, applied to both data and Monte Carlo (MC), is presented. Amongst the systematic errors involved in this event selection, the development of a novel detector systematic, created by the author of this thesis and dubbed the "hybrid analysis" is presented in detail. The analysis of published CC muon interaction data from deuterium bubble chamber experiments is presented in detail and used to tune a model of charged pion multiplicities. Utilizing this model, a systematic error on the number of charged pions produced in CC multi-pion events is characterized for the first time and implemented. The official T2K MC corresponding to the presented event selection is used extensively in the development, study and validation of a fitting method proposed to extract the a model- dependent measurement of the CC-1-pion differential cross section with respect to true positive pion momentum. The studies to date suggest tuning of input cross section model parameters may need to be re-evaluated to ensure representative validation tests, and that the fit method may need to include a regularization method.
Book Synopsis Charged-Current Neutral Pion Production at SciBooNE. by :
Download or read book Charged-Current Neutral Pion Production at SciBooNE. written by and published by . This book was released on 2009 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: SciBooNE, located in the Booster Neutrino Beam at Fermilab, collected data from June 2007 to August 2008 to accurately measure muon neutrino and anti-neutrino cross sections on carbon below 1 GeV neutrino energy. SciBooNE is studying charged current interactions. Among them, neutral pion production interactions will be the focus of this poster. The experimental signature of neutrino-induced neutral pion production is constituted by two electromagnetic cascades initiated by the conversion of the [pi]° decay photons, with an additional muon in the final state for CC processes. In this poster, I will present how we reconstruct and select charged-current muon neutrino interactions producing [pi]°'s in SciBooNE.
Book Synopsis Measurement of the Single Charged Pion Production Cross Section in Charged-current Neutrino-carbon Interactions by :
Download or read book Measurement of the Single Charged Pion Production Cross Section in Charged-current Neutrino-carbon Interactions written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Improved Measurement of Neutral Current Coherent $\pi^0$ Production on Carbon in a Few-GeV Neutrino Beam by :
Download or read book Improved Measurement of Neutral Current Coherent $\pi^0$ Production on Carbon in a Few-GeV Neutrino Beam written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The SciBooNE Collaboration reports a measurement of neutral current coherent neutral pion production on carbon by a muon neutrino beam with average energy 0.8 GeV. The separation of coherent from inclusive neutral pion production has been improved by detecting recoil protons from resonant neutral pion production. We measure the ratio of the neutral current coherent neutral pion production to total charged current cross sections to be (1.16 +/- 0.24) x 10-2. The ratio of charged current coherent pion to neutral current coherent pion production is calculated to be 0.14+0.30 -0.28, using our published charged current coherent pion measurement.
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 Single-pion Production in Charged-current Neutrino Interactions at A.N.L. by :
Download or read book Single-pion Production in Charged-current Neutrino Interactions at A.N.L. written by and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Single Neutral Pion Production by Charged-current $\bar{\nu}_\mu$ Interactions on Hydrocarbon at $\langle E_\nu \rangle by :
Download or read book Single Neutral Pion Production by Charged-current $\bar{\nu}_\mu$ Interactions on Hydrocarbon at $\langle E_\nu \rangle written by and published by . This book was released on 2015 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We studied single neutral pion production via muon antineutrino charged-current interactions in plastic scintillator (CH) using the MINERvA detector exposed to the NuMI low-energy, wideband antineutrino beam at Fermilab. Measurement of this process constrains models of neutral pion production in nuclei, which is important because the neutral-current analog is a background for appearance oscillation experiments. Furthermore, the differential cross sections for ?0 momentum and production angle, for events with a single observed ?0 and no charged pions, are presented and compared to model predictions. These results comprise the first measurement of the ?0 kinematics for this process.
Book Synopsis Single Neutral Pion Production in Charged Current and Neutral Current Neutrino Interactions by :
Download or read book Single Neutral Pion Production in Charged Current and Neutral Current Neutrino Interactions written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Single Pion Production in Charged and Neutral Current Neutrino Interactions by : Gaston S. Ormazabal
Download or read book Single Pion Production in Charged and Neutral Current Neutrino Interactions written by Gaston S. Ormazabal and published by . This book was released on 1985 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coherent Production of Pions and Rho Mesons in Neutrino Charged Current Interactions on Neon Nuclei at the Fermilab Tevatron by :
Download or read book Coherent Production of Pions and Rho Mesons in Neutrino Charged Current Interactions on Neon Nuclei at the Fermilab Tevatron written by and published by . This book was released on 1992 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: The coherent production of single pions and and [rho] mesons in charged current interactions of neutrinos and antineutrinos on neon nuclei has been studied. The data were obtained using the Fermilab 15-foot Bubble Chamber, filled with a heavy Ne-H2 mixture and exposed to the Quadrupole Triplet neutrino beam produced by 800 GeV protons from the Tevatron. The average beam energy was 86 GeV. In a sample of 330000 frames, 1032 two-prong [nu]{sub {mu}} + {bar [nu]}{sub {mu}} charged current interactions were selected. The goal of this study was to investigate the low Q2 high {nu} region where the hadron dominance model can be tested. In this model, the vector and axial-vector parts of the weak hadronic current are dominated by the [rho] and a1 mesons respectively. Moreover, the Partially Conserved Axial Current (PCAC) hypothesis can be tested by studying the coherent production of single pions.
Book Synopsis Measurement of Charged Current Coherent Pion Production by Neutrinos on Carbon at MINER?A by : Aaron Mislivec
Download or read book Measurement of Charged Current Coherent Pion Production by Neutrinos on Carbon at MINER?A written by Aaron Mislivec and published by . This book was released on 2017 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Neutrino-nucleus coherent pion production is a rare neutrino scattering process where the squared four-momentum transferred to the nucleus is small, a lepton and pion are produced in the forward direction, and the nucleus remains in its initial state. This process is an important background in neutrino oscillation experiments. Measurements of coherent pion production are needed to constrain models which are used to predict coherent pion production in oscillation experiments. This thesis reports measurements of vm and -vm charged current coherent pion production on carbon for neutrino energies in the range 2
Book Synopsis Measurement of Charged Current Coherent Pion Production by Neutrinos on Carbon at MINER$\nu$A. by :
Download or read book Measurement of Charged Current Coherent Pion Production by Neutrinos on Carbon at MINER$\nu$A. written by and published by . This book was released on 2017 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neutrino-nucleus coherent pion production is a rare neutrino scattering process where the squared four-momentum transferred to the nucleus is small, a lepton and pion are produced in the forward direction, and the nucleus remains in its initial state. This process is an important background in neutrino oscillation experiments. Measurements of coherent pion production are needed to constrain models which are used to predict coherent pion production in oscillation experiments. This thesis reports measurements of [nu]æ and [nu]æ charged current coherent pion production on carbon for neutrino energies in the range 2
Book Synopsis Measurement of Inclusive Charged Current Interactions on Carbon in a Few-GeV Neutrino Beam by :
Download or read book Measurement of Inclusive Charged Current Interactions on Carbon in a Few-GeV Neutrino Beam written by and published by . This book was released on 2010 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The SciBooNE Collaboration reports a measurement of inclusive charged current interactions of muon neutrinos on carbon with an average energy of 0.8 GeV using the Fermilab Booster Neutrino Beam. We compare our measurement with two neutrino interaction simulations: NEUT and NUANCE. The charged current interaction rates (product of flux and cross section) are extracted by fitting the muon kinematics, with a precision of 6-15% for the energy dependent and 3% for the energy integrated analyses. We also extract CC inclusive interaction cross sections from the observed rates, with a precision of 10-30% for the energy dependent and 8% for the energy integrated analyses. This is the first measurement of the CC inclusive cross section on carbon around 1 GeV. These results can be used to convert previous SciBooNE cross section ratio measurements to absolute cross section values.
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?
