20 research outputs found
Introduction to MiniBooNE and Vu charged-current quasi-elastic results
"The MiniBooNE experiment is described together with the procedures used to obtain a result for Vm - Ve oscillations. (The oscillation results are described in the companion talk of M. Sorel.) Results are given here for the charged-current quasi-elastic (CCQE) cross section, Vmn - m[?]p. It is found that the simple relativistic Fermi gas nuclear model with Fermi momentum, PF = 220 MeV/c and binding energy EB = 34 MeV is insufficient to describe the reaction for any values of the axial vector mass MA. It was found necessary to add a new empirical Pauli blocking parameter, k. With this new term, the best values found were MA = 1.23 +- 0.20 GeV and k = 1.019 +- 0.011."http://deepblue.lib.umich.edu/bitstream/2027.42/64213/1/jpconf8_110_082018.pd
A prompt neutrino measurement
A test has been made to explore the possibility of beam dump neutrino experiments with short targetādetector separations and modest detectors. Results have given a positive neutrino signal which is interpreted in the context of various charmedāmeson production models. A limit to the lifetime and mass of the axion is also a byproduct of this test.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87326/2/246_1.pd
Improved Probability Method for Estimating Signal in the Presence of Background
A suggestion is made for improving the Feldman Cousins method of estimating
signal counts in the presence of background. The method concentrates on finding
essential information about the signal and ignoring extraneous information
about background. An appropriate method is found which uses the condition that
the number of background events obtained does not exceed the total number of
events obtained. Several alternative approaches are explored.Comment: Modified 12/21 for singlespace to save trees, 9 pages, 1 figure.
Modified 8/11/99 to add small modifications made for the Phys. Rev. articl
Results from a Fermilab neutrino beam dump experiment
The flux of prompt neutrinos from a beam dump has been measured in an experiment at the Fermi National Accelerator Laboratory (E613). Assuming that the charm production has a linear dependence on atomic number and varies as (1āāĆā)5 eā2mT, a model dependent cross section of 27Ā±5Ī¼b/nucleon can be derived. For neutrino energies greater than 20 GeV, the flux of electron neutrinos with respect to muon neutrinos is 0.78Ā±0.19. For neutrinos with energy greater than 30 GeV and pā greater than 0.2, the flux of Ī½Ģu compared to Ī½Ī¼ is 0.96Ā±0.22.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87363/2/100_1.pd
Prompt Neutrino Results from Fermi Lab
Results from a Fermi lab experiment to study prompt neutrino production are presented. Assuming the prompt neutrinos come from the decay of charmed mesons we find a total DD production cross section of approx. 20 Ī¼b/nucleon, in good agreement with previous CERN results. We find a Ī½/Ī½ ratio and a Ī½e/Ī½Ī¼ of approx. 1.0. The energy and pT spectra of the prompt neutrinos are consistent with those expected from DD production. Limits on the production of supersymmetric particles have also been obtained.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87356/2/262_1.pd
A semi automatic fortran translator for the FNAL second generation ACP
In preparation for building a 250 VUP second generation Fermilab ACP system at Michigan for the CERN L3 experiment, we have developed a semi-automatic pre-compiler to convert event oriented programs into parallel code for the ACP.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/28451/1/0000240.pd