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The neutrinos in muon decay

Description: We review the available information on the identity of the neutrino states emitted in muon decay, and discuss the exotic decay {mu}{sup +} {yields} e{sup +} {bar {nu}}{sub e}{nu}{sub {mu}}. 22 refs.
Date: October 21, 1991
Creator: Herczeg, P.
Partner: UNT Libraries Government Documents Department
open access

MAPMT H7546B anode current response study for ILC SiD muon system prototype

Description: The proposed Silicon Detector (SiD) concept for the ILC has barrel and end cap muon systems. An SiD scintillator based muon system prototype has 256 strips and was constructed from extruded strips, WLS fibers, clear fibers, and multianode photo multiplier tubes (MAPMT) Hamamatsu H7546B. Six MAPMTs were used. As a first step to understand strip output, the response of every anode to a given brightness of light and applied voltage must be measured. For the test, a custom made light source was use… more
Date: October 1, 2007
Creator: Dyshkant, A.; Blazey, G.; Francis, K.; Hedin, D.; Zutshi, V.; Fisk, H. et al.
Partner: UNT Libraries Government Documents Department
open access

Search for Standard Model Higgs Bosons Produced in Association with W Bosons

Description: The authors report on the results of a search for standard model Higgs bosons produced in association with W bosons from p{bar p} collisions at {radical}s = 1.96 TeV. The search uses a data sample corresponding to approximately 1 fb{sup -1} of integrated luminosity. Events consistent with the W {yields} {ell}{nu} and H {yields} b{bar b} signature are selected by triggering on a high-p{sub T} electron or muon candidate and tagging one or two of the jet candidates as having originated from b quar… more
Date: October 1, 2007
Creator: Aaltonen, T.
Partner: UNT Libraries Government Documents Department
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MiniBooNE first results on a search for $\nu_e$ appearance at the $\delta m^2\sim 1\ \hbox{ev}^2$ scale

Description: Solar and atmospheric neutrino oscillations, recently confirmed by reactor and accelerator-based experiments, are now well established. On the other hand, the interpretation of the LSND {bar {nu}}{sub e} excess [1] as {bar {nu}}{sub {mu}} {yields} {bar {nu}}{sub e} oscillations at the {Delta}m{sup 2} {approx} 1 eV{sup 2} scale lacked for many years experimental confirmation or refutation. The primary goal of the MiniBooNE experiment [2] is to address this anomaly in an unambiguous and independe… more
Date: October 1, 2007
Creator: Sorel, M.
Partner: UNT Libraries Government Documents Department
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Project X and its connection to neutrino physics

Description: Project X is a new high intensity proton source that is being planned at Fermilab to usher in a new era of high intensity physics. The high intensity frontier can provide a wealth of new measurements--the most voracious consumer of protons is the long baseline neutrino program, but with the proton source upgrades being planned there are even more protons available than current neutrino targets can withstand. Those protons can provide a rich program on their own of muon physics and neutrino scat… more
Date: October 1, 2008
Creator: Harris, Deborah & Jansson, Andreas
Partner: UNT Libraries Government Documents Department
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Direct production of high p sub t leptons and search for additional heavy bosons at 1. 8 TeV

Description: We have studied the production of high p{sub t} electrons and muons and searched for additional heavy charged (W{prime}) and neutral (Z{prime}) vector bosons. We find no evidence for such bosons and set limits of M{sub w}{prime} > 520 GeV and M{sub Z}{prime} > 412 GeV (95% confidence level) assuming Standard Model couplings. The production of high mass electron and muon pairs is consistent with the Standard Model prediction for the Drell-Yan production mechanism. Lower limits of 2.2 TeV and 1.6… more
Date: October 1, 1991
Creator: Gold, M. (Lawrence Berkeley Lab., CA (United States))
Partner: UNT Libraries Government Documents Department
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Status and first results of Brookhaven Experiment 780: A search for K/sub L//sup 0/. -->. mu + e and K/sub L//sup 0/. -->. e + e

Description: We report on the progress of a search for the rare decays K/sub L//sup 0/ ..-->.. ..mu.. + e and K/sub L//sup 0/ ..-->.. e + e underway at the Brookhaven National Laboratory AGS. Analysis of data collected in February and May of 1987 yields the preliminary limit: BR(K/sub L//sup 0/ ..-->.. ..mu.. + e), BR(K/sub L//sup 0/ ..-->.. e + e) < 7 x 10/sup -9/. Prospects are discussed for the running period scheduled to begin in January of 1988.
Date: October 1, 1987
Creator: Greenlee, H.B.; Kasha, H.; Mannelli, E.; Mannelli, M.; Schaffner, S.; Schmidt, M.P. et al.
Partner: UNT Libraries Government Documents Department
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Performance of the SLD Warm Iron Calorimeter Pre-Prototype

Description: The performance of a pre-prototype of the SLD Warm Iron Calorimeter (WIC) build with proportional tube cathode pad readout has been studied. The calorimeter was found to have an average resolution of 36.7 +- 0.2% for muons at 2.0, 5.0 and 10.5 GeV and 81 +- 2%/..sqrt..E for pion showers at 5.0 and 10.5 GeV. The mean energy found for the pion showers was consistent with a linear dependence on energy within these standard deviations. 4 refs., 6 figs., 3 tabs.
Date: October 1, 1985
Creator: Johnson, A. S.; Busza, W.; Friedman, J.; Kendall, H.; Kistiakowsky, V.; Lyons, T. et al.
Partner: UNT Libraries Government Documents Department
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Initial data from the Soudan 2 experiment

Description: Soudan 2 is an 1100-ton tracking calorimeter which is being built 713 m underground to search for nucleon decay and to study neutrino and cosmic-ray physics. The detector is assembled from 256 identical 4.3-ton calorimeter modules. Each module consists of finely segmented iron and drift tubes, and records three space coordinates and dE/dx for every tube crossing. It is surrounded on all sides by a 1700 m{sup 2} active shield of proportional tubes. The first atmospheric neutrino interactions and… more
Date: October 12, 1990
Creator: Ayres, D.S.
Partner: UNT Libraries Government Documents Department
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Direct production of high p{sub t} leptons and search for additional heavy bosons at 1.8 TeV

Description: We have studied the production of high p{sub t} electrons and muons and searched for additional heavy charged (W{prime}) and neutral (Z{prime}) vector bosons. We find no evidence for such bosons and set limits of M{sub w}{prime} > 520 GeV and M{sub Z}{prime} > 412 GeV (95% confidence level) assuming Standard Model couplings. The production of high mass electron and muon pairs is consistent with the Standard Model prediction for the Drell-Yan production mechanism. Lower limits of 2.2 TeV and 1.6… more
Date: October 1, 1991
Creator: Gold, M.
Partner: UNT Libraries Government Documents Department
open access

Muon physics with the proposed Pulsed Lepton Source at LAMPF

Description: The Pulsed Lepton Source (PLS) project opens some exciting possibilities for muon and neutrino physics . The PLS would use the 0.25 4s proton pulses from the upgraded Proton Storage Ring (PSR) at LAMPF to create short, intense bursts of muons and neutrinos. The neutrino beam would be used for a few fundamentally important weak interaction physics experiments. The muon beams would find a wide variety of applications in both fundamental and ``applied`` muon physics areas. After a brief discussion… more
Date: October 1, 1992
Creator: Leon, M. & Paciotti, M. A.
Partner: UNT Libraries Government Documents Department
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Non-Scaling Fixed Field Gradient Optimization.

Description: Optimization of the non-scaling FFAG lattice for the specific application of the muon acceleration with respect to the minimum orbit offsets, minimum path length and smallest circumference is described. The short muon lifetime requires fast acceleration. The acceleration is in this work assumed to be with super-conducting cavities. This sets up a condition of acceleration at the top of the sinusoidal RF wave.
Date: October 13, 2004
Creator: Trbojevic, D.
Partner: UNT Libraries Government Documents Department
open access

ILC Root tracker and vertex detector response to MARS15 simulated backgrounds in muon collider

Description: Results from a simulation of the background for a muon collider, and the response of a silicon tracking detector to this background are presented. The background caused by decays of the 750-GeV muon beams was simulated using the MARS15 program, which included the infrastructure of the beam line elements near the detector and the 10{sup o} nozzles that shield the detector from this background. The ILCRoot framework, along with the Geant4 program, was used to simulate the response of the tracker … more
Date: October 1, 2011
Creator: Terentiev, N. K.; Di Benedetto, V.; Gatto, C.; Mazzacane, A.; Mokhov, N. V. & Striganov, S. I.
Partner: UNT Libraries Government Documents Department
open access

LINACS FOR FUTURE MUON FACILITIES

Description: Future Muon Colliders (MC) and Neutrino Factories (NF) based on muon storage rings will require innovative linacs to: produce the muons, cool them, compress longi-tudinally and ‘shape’ them into a beam and finally to rap-idly accelerate them to multi-GeV (NF) and TeV (MC) energies. Each of these four linac applications has new requirements and opportunities that follow from the na-ture of the muon in that it has a short lifetime (τ = 2.2 μsec) in its own rest frame, it is produced in a tertiary… more
Date: October 1, 2008
Creator: Slawomir Bogacz, Rolland Johnson
Partner: UNT Libraries Government Documents Department
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First Observation of Accelerator Muon Antineutrinos in MINOS

Description: We report the first direct observation of muon antineutrinos in the MINOS Far Detector in the current muon-neutrino dominated beam. The magnetic field of the detector is utilized to separate muon neutrinos and antineutrinos event-by-event by identifying the charge sign of the muon created in charged-current interactions. We present preliminary results on the {bar {nu}}{sub {mu}} oscillation parameters as well as limit on the fraction of neutrinos that disappear and reappear as antineutrinos. We… more
Date: October 1, 2009
Creator: Danko, Istvan
Partner: UNT Libraries Government Documents Department
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Accelerator R&D toward Muon Collider and Neutrino Factory

Description: Over the last decade there has been significant progress in developing the concepts and technologies needed to produce, capture, accelerate and collide high intensity beams of muons. At present, a high-luminosity multi-TeV muon collider presents a viable option for the next generation lepton-lepton collider, which is believed to be needed to fully explore high energy physics in the era following LHC discoveries. Such a collider can offer superb energy resolution, smaller size, and potentially c… more
Date: October 1, 2009
Creator: Shiltsev, Vladimir
Partner: UNT Libraries Government Documents Department
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Helical FOFO snake for 6D ionization cooling of muons

Description: A channel for 6D ionization cooling of muons is described which consists of periodically inclined solenoids of alternating polarity, liquid hydrogen absorbers placed inside solenoids and RF cavities between them. Important feature of such channel (called Helical FOFO snake) is that it can cool simultaneously muons of both signs. Theoretical considerations as well as results of simulations with G4Beamline are presented which show that 200MHz HFOFO snake has sufficient acceptance to be used for i… more
Date: October 1, 2009
Creator: Alexahin, Y.
Partner: UNT Libraries Government Documents Department
open access

Measurements of the top-quark mass using charged particle tracking

Description: We present three measurements of the top-quark mass in the lepton plus jets channel with approximately 1.9 fb{sup -1} of integrated luminosity collected with the CDF II detector using quantities with minimal dependence on the jet energy scale. One measurement exploits the transverse decay length of b-tagged jets to determine a top-quark mass of 166.9{sub -8.5}{sup +9.5} (stat) {+-} 2.9 (syst) GeV/c{sup 2}, and another the transverse momentum of electrons and muons from W-boson decays to determi… more
Date: October 1, 2009
Creator: Aaltonen, T.; Adelman, J.; Akimoto, T.; Alvarez Gonzalez, B.; Amerio, S.; Amidei, D. et al.
Partner: UNT Libraries Government Documents Department
open access

Charged-Current Neutral Pion production at SciBooNE

Description: 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… more
Date: October 1, 2009
Creator: Catala-Perez, J. & /Valencia U., IFIC
Partner: UNT Libraries Government Documents Department
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Fermilab Proton Beam for Mu2e

Description: Plans to use existing Fermilab facilities to provide beam for the Muon to Electron Conversion Experiment (Mu2e) are under development. The experiment will follow the completion of the Tevatron Collider Run II, utilizing the beam lines and storage rings used today for antiproton accumulation without considerable reconfiguration. The proposed Mu2e operating scenario is described as well as the accelerator issues being addressed to meet the experimental goals.
Date: October 1, 2009
Creator: Syphers, M. J.
Partner: UNT Libraries Government Documents Department
open access

Superconducting radiofrequency linac development at Fermilab

Description: As the Fermilab Tevatron Collider program draws to a close, a strategy has emerged of an experimental program built around the high intensity frontier. The centerpiece of this program is a superconducting H- linac that will support world leading programs in long baseline neutrino experimentation and the study of rare processes. Based on technology shared with the International Linear Collider, Project X will provide multi-MW beams at 60-120 GeV from the Main Injector, simultaneous with very hig… more
Date: October 1, 2009
Creator: Holmes, Stephen D.
Partner: UNT Libraries Government Documents Department
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Proton Bunching Options

Description: Muon Colliders need intense, very short, proton bunches. The requirements are presented and a number of possible bunching systems discussed. The best solution uses a small super-conducting buncher ring with 6 bunches that are taken though separate transports and combined on the target.
Date: October 19, 2009
Creator: Palmer, Robert B.
Partner: UNT Libraries Government Documents Department
open access

Proton beam formation at Fermilab for Mu2e (and for NF/MC)

Description: Proton bunch formation from the Fermilab proton sources for the mu2e experiment is discussed. In the initial scenario a single intense h=1 bunch is formed in the Accumulator/Debuncher, with slow extraction providing the required spill. However, the mu2e experiment could use h=4 bunching in the Accumulator rather than h=1, with the 4 bunches fed one at a time into the more isochronous Debuncher for slow extraction. The h=4 variant has several advantages and a few disadvantages, and can reduce pe… more
Date: October 1, 2009
Creator: Neuffer, David
Partner: UNT Libraries Government Documents Department
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Modular test facility for HTS insert coils

Description: The final beam cooling stages of a Muon Collider may require DC solenoid magnets with magnetic fields in the range of 40-50 T. In this paper we will present a modular test facility developed for the purpose of investigating very high field levels with available 2G HTS superconducting materials. Performance of available conductors is presented, together with magnetic calculations and evaluation of Lorentz forces distribution on the HTS coils. Finally a test of a double pancake coil is presented.
Date: October 1, 2009
Creator: Lombardo, V; Bartalesi, A.; Barzi, E.; Lamm, M.; Turrioni, D. & Zlobin, A. V.
Partner: UNT Libraries Government Documents Department
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