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Measurement of the B -> Omega l Nu and B -> Eta l Nu Branching Fractions Using Neutrino Reconstruction

Description: The authors present a study of the charmless semileptonic B-meson decays B{sup +} {yields} {omega}{ell}{sup +}{nu} and B{sup +} {yields} {eta}{ell}{sup +}{nu}. The analysis is based on 383 million B{bar B} pairs recorded at the {Upsilon}(4S) resonance with the BABAR detector. The {omega} mesons are reconstructed in the channel {omega} {yields} {pi}{sup +}{pi}{sup -}{pi}{sup 0} and the {eta} mesons in the channels {eta} {yields} {pi}{sup +}{pi}{sup -}{pi}{sup 0} and {eta} {yields} {gamma}{gamma}… more
Date: September 9, 2008
Creator: Aubert, Bernard; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nucleosynthesis in Early Neutrino Driven Winds

Description: Two recent issues related to nucleosynthesis in early proton-rich neutrino winds are investigated. In the first part we investigate the effect of nuclear physics uncertainties on the synthesis of {sup 92}Mo and {sup 94}Mo. Based on recent experimental results, we find that the proton rich winds of the model investigated here can not be the only source of the solar abundance of {sup 92}Mo and {sup 94}Mo. In the second part we investigate the nucleosynthesis from neutron rich bubbles and show tha… more
Date: January 9, 2008
Creator: Hoffman, R; Fisker, J; Pruet, J; Woosley, S; Janka, H & Buras, R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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New Prospects for High-energy Neutrinos from gamma-ray Bursts

Description: High-energy neutrinos from Gamma-Ray Bursts (GRBs) have been expected since the pre-Swift era. Such signals may be detected by future large neutrino detectors such as IceCube. Recently Swift has shown several novel phenomena. We suggest the new prospects for high-energy neutrino emission in the Swift era. Expected signals, if detected, are useful for revealing of the nature of GRBs.
Date: January 9, 2008
Creator: Murase, K.; /Kyoto U., Yukawa Inst., Kyoto; Nagataki, S. & /KIPAC, Menlo Park
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Main Injector Particle Production Experiment (MIPP) at Fermilab

Description: The Main Injector Particle Production Experiment at Fermilab uses particle beams of charged pions, kaons, proton and anti-proton with beam momenta of 5 to 90 GeV/c and thin targets spanning the periodic table from (liquid) hydrogen to uranium to measure particle production cross sections in a full acceptance spectrometer with charged particle identification for particles from 0.1 to 120 GeV/c using Time Projection Chamber, Time of Flight, multicell Cherenkov, and Ring Imaging Cherenkov detector… more
Date: December 9, 2010
Creator: Mahajan, Sonam
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Weinberg--Salam gauge model and neutrino proton elastic scattering. [Differential cross sections]

Description: Elastic scattering of neutrino on proton is studied in the Weinberg-Salam gauge model of neutral currents. Particular attention is paid to the experimental cuts relevant to two recent BNL experiments and spectra averaging so that model predictions can be directly compared to the experimental data. The uncertainty in the calculation due to changes in the parameters which are not well determined such as the mass of the axial vector meson is emphasized. It is concluded that the simple Weinberg-Sal… more
Date: August 9, 1976
Creator: Sidhu, D P
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MiniBooNE "Windows on the Universe"

Description: Progress in the last few decades has left neutrino physics with several vexing issues. Among them are the following questions: (1) Why are lepton mixing angles so different from those in the quark sector? (2) What is the most probable range of the reactor mixing angle? (3) Is the atmospheric mixing angle maximal? (4) What is the number of fermion generations? These are some of the issues that neutrino science hopes to study; this article will explore these questions as part of a more general sc… more
Date: December 9, 2010
Creator: Stefanski, Ray
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Precise Predictions for Z + 4 Jets at Hadron Colliders

Description: We present the cross section for production of a Z boson in association with four jets at the Large Hadron Collider, at next-to-leading order in the QCD coupling. When the Z decays to neutrinos, this process is a key irreducible background to many searches for new physics. Its computation has been made feasible through the development of the on-shell approach to perturbative quantum field theory. We present the total cross section for pp collisions at {radical}s = 7 TeV, after folding in the de… more
Date: December 9, 2011
Creator: Ita, H.; Bern, Z.; Dixon, L.J.; Cordero, F.Febres; Kosower, D.A. & Maitre, D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Implications of HARP Results for the Energy of the Proton Driver for a Neutrino Factory and Muon Collider

Description: Cross-section data from the HARP experiment for pion production by protons from a tantalum target have been convoluted with the acceptance of the front-end channel for the proposed neutrino factory or muon collider and integrated over the full phase space measured by HARP, to determine the beam-energy dependence of the muon yield. This permits a determination of the optimal beam energy for the proton driver for these projects. The cross-section data are corrected for the beam-energy dependent '… more
Date: June 9, 2010
Creator: Strait, J.; Mokhov, N. V. & Striganov, S. I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Beam manipulation and compression using broadband rf systems in the Fermilab Main Injector and Recycler

Description: A novel method for beam manipulation, compression, and stacking using a broad band RF system in circular accelerators is described. The method uses a series of linear voltage ramps in combination with moving barrier pulses to azimuthally compress, expand, or cog the beam. Beam manipulations can be accomplished rapidly and, in principle, without emittance growth. The general principle of the method is discussed using beam dynamics simulations. Beam experiments in the Fermilab Recycler Ring convi… more
Date: July 9, 2004
Creator: al., G William Foster et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Summary of the 2003 Moriond Workshop on electroweak interactions and unified theories

Description: The 2003 Moriond Workshop on Electroweak Interactions and Unified Theories covered a very rich, diverse array of recent results concerning neutrinos, astrophysics and cosmology, searches for new particles, Higgs physics, precision low-energy measurements, quark flavor physics, CP violation, and electroweak interactions. In this summary, we recapitulate some of the highlights. We update many of the results reported at the Workshop to include newer findings reported during Summer, 2003. In this r… more
Date: March 9, 2004
Creator: Kayser, Boris
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Superconducting magnets for induction linac phase-rotation in a neutrino factory

Description: The neutrino factory[1-3] consists of a target section where pions are produced and captured in a solenoidal magnetic field. Pions in a range of energies from 100 Mev to 400 MeV decay into muons in an 18-meter long channel of 1.25 T superconducting solenoids. The warm bore diameter of these solenoids is about 600 mm. The phase rotation section slows down the high-energy muon and speeds up the low energy muons to an average momentum of 200 MeV/c. The phase-rotation channel consists of three indu… more
Date: May 9, 2001
Creator: Green, M.A. & Yu, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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CPT Tests: Kaon vs neutrinos

Description: CPT violation has an impressive limit in the neutral kaon system |m(K{sup 0})-m({bar K}{sup 0})| < 10{sup -18} m{sub K} = 0.50 x 10{sup -18} GeV. However, if viewed as a constraint on the mass-squared, the bound appears weak, |m{sup 2}(K{sup 0})-m{sup 2}({bar K}{sup 0})| < 0.25 eV{sup 2}. the authors point out that neutrino oscillation offers better limits on CPT violation in this case. The comparison of solar and rector neutrino results puts the best limit on CPT violation by far, |{Delt… more
Date: July 9, 2003
Creator: Murayama, Hitoshi
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Beam dynamics issues of muon acceleration in RLA

Description: A conceptual design of a muon acceleration based on recirculating superconducting linacs is proposed. In the presented scenario, acceleration starts after ionization cooling at 210 MeV/c and proceeds to 20 GeV, where the beam is injected into a neutrino factory storage ring. The key technical issues are addressed; such as: the choice of acceleration technology (superconducting versus normal conducting) and the choice of RF frequency, and finally, implementation of the overall acceleration schem… more
Date: December 9, 2002
Creator: Bogacz, S. A. & Lebedev, V. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Neutrino Factory Designs and R&D

Description: The development of a very intense muon source capable of producing a millimole of muons per year would enable a Neutrino Factory [1], and perhaps eventually a Muon Collider [2], to be built. In the last two years Neutrino Factory physics studies [3] have mapped out an exciting Neutrino Factory physics program. In addition, Neutrino Factory feasibility studies [4-6] have yielded designs that appear to be ''realistic'' provided the performance parameters for the critical components can be achieve… more
Date: January 9, 2004
Creator: Geer, Steve
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Stardust, Supernovae and the Chirality of the Amino Acids

Description: A mechanism for creating enantiomerism in the amino acids, the building blocks of the proteins, that involves global selection of one chirality by interactions between the amino acids and neutrinos from core-collapse supernovae is described. The selection involves the dependence of the interaction cross sections on the orientations of the spins of the neutrinos and the 14N nuclei in the amino acids, or in precursor molecules, which in turn couple to the molecular chirality. The subsequent chemi… more
Date: March 9, 2011
Creator: Boyd, R. N.; Kajino, T. & Onaka, T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Synchronization of the Fermilab Booster and Main Injector for multiple batch injection

Description: To date, the 120 GeV Fermilab Main Injector accelerator has accelerated a single batch of protons from the 8 GeV rapid-cycling Booster synchrotron for production of antiprotons for Run II. In the future, the Main Injector must accelerate 6 or more Booster batches simultaneously; the first will be extracted to the antiproton source, while the remaining are extracted for the NuMI/MINOS (Neutrinos at the Main Injector/Main Injector Neutrino Oscillation Search) neutrino experiment. Performing this … more
Date: July 9, 2004
Creator: al., Robert Zwaska et
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Diagnostics summary: Working group T9

Description: The diagnostics T9 group was charged with reviewing the diagnostic requirements of the proposed accelerators for the future. The list includes the e+e- colliders, Muon Neutrino source, NLC, Proton Driver, Tesla, and the VLHC. While the machines vary widely on diagnostic requirements, there are many similarities that were discovered. The following sections will attempt to point out the similarities and requirements for R and D for these future accelerators. To answer the Charge to the group they… more
Date: December 9, 2002
Creator: Pasquinelli, Ralph J. & Ross, Marc C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Primordial nucleosynthesis during the keV era

Description: Energetic hadronic and electromagnetic showers in the keV era of the hot big bang are produced by the decays of long lived particles. These showers initiate a new phase of nucleosynthesis. The abundance ratios of D, /sup 3/He, /sup 6/Li and /sup 7/Li are given by fixed points of rate equations, which are determined by nuclear physics not by the nature of the decaying particle. The fixed points are independent of prior abundances, so that constraints from the MeV era of nucleosynthesis evaporate… more
Date: September 9, 1987
Creator: Dimopoulos, S.; Esmailzadeh, R.; Hall, L. J. & Starkman, G. D.
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Partner: UNT Libraries Government Documents Department
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Neutrino Physics at Fermilab

Description: The Liquid Scintillator Neutrino Detector (LSND), located at the LANSCE (formerly LAMPF) linear accelerator at Los Alamos National Laboratory, has seen evidence for the oscillation of neutrinos, and hence neutrino mass. That discovery was the impetus for this LDRD project, begun in 1996. The goal of this project was to define the appropriate technologies to use in a follow up experiment and to set in place the requirements for such an experiment.
Date: July 9, 1999
Creator: Federspiel, F.; Garvey, G.; Louis, W.C.; Mills, G.B.; Tayloe, R.; Sandberg, V. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Rare K+ Decays from Experiment E787

Description: This paper presents the latest results from experiment E787, at Brookhaven National Laboratory, on K{sup +} {r_arrow} {pi}{sup +} {nu}{bar {nu}} and radiative K{sup +} decays. The result for K{sup +} {r_arrow} {pi}{sup +} {nu}{bar {nu}} uses data collected in runs taken during 1995, 1996 and 1997. In addition, they discuss plans for future measurements of K{sup +} {r_arrow} {pi}{sup +} {nu}{bar {nu}}.
Date: October 9, 2000
Creator: Jain, V.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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New perspectives in physics beyond the standard model

Description: In 1934 Fermi postulated a theory for weak interactions containing a dimensionful coupling with a size of roughly 250 GeV. Only now are we finally exploring this energy regime. What arises is an open question: supersymmetry and large extra dimensions are two possible scenarios. Meanwhile, other experiments will begin providing definitive information into the nature of neutrino masses and CP violation. In this paper, we explore features of possible theoretical scenarios, and study the phenomenol… more
Date: September 9, 2000
Creator: Weiner, Neal Jonathan
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
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Neutrino propagation in matter with general interactions.

Description: We present a general analysis of the effective potential for neutrino propagation in matter, assuming a generic set of Lorentz invariant non-derivative interactions. We find that in addition to the known vector and axial vector terms, in a polarized medium also tensor interactions can play an important role. We compute the effective potential arising from a tensor interaction. We show that the components of the tensor potential transverse to the direction of the neutrino propagation can induce … more
Date: April 9, 1999
Creator: Grossman, yuval
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The digital optical module - How IceCube will acquire data

Description: IceCube will be a km-scale neutrino detector consisting of 4800 optical modules (OMs) on 80 strings of 60 OMs each. The DAQ technology will have the following desirable features: (1) the robustness of copper cable between the OMs and the surface. (2) digitization and time-stamping of signals that are unattenuated and undispersed. (3) calibration methods (particularly for timing) appropriate for a large number of OMs. The PMT anode waveform is digitized and time-stamped in the OM. The time calib… more
Date: January 9, 2003
Creator: Stokstad, R.G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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