15,156 research outputs found

### Neutrino Experiments and the LHC: Friends Across 14 Orders of Magnitude

This proceeding explores some of the questions that connect the LHC and
neutrino experiments: What is the origin of mass? What is the meaning of
flavor? Is there direct evidence of new forces or particles? The neutrino
program investigating these questions is large and diverse. The strategy here,
to narrow the discussion, is to focus on relatively new ideas for experiments
that may be less known within the LHC community.Comment: Prepared for the proceedings of the LHC Nobel Symposium, held May
13-17, 201

### Limits on Electron Neutrino Disappearance from the KARMEN and LSND electron neutrino - Carbon Cross Section Data

This paper presents a combined analysis of the KARMEN and LSND nu_e-carbon
cross section measurements within the context of a search for nu_e
disappearance at high Delta m^2. KARMEN and LSND were located at 17.7 m and
29.8 m respectively from the neutrino source, so the consistency of the two
measurements, as a function of antineutrino energy, sets strong limits on
neutrino oscillations. Most of the allowed region from the nu_e disappearance
analysis of the Gallium calibration data is excluded at >95% CL and the best
fit point is excluded at 3.6$\sigma$. Assuming CPT conservation, comparisons
are also made to the oscillation analyses of reactor antineutrino data.Comment: Published versio

### Frequency modulation demodulator threshold extension device

Threshold extension device for improving operating performance of frequency modulatioin demodulators by eliminating click-type noise impulse

### Precision Measurement of sin^2 theta_W at a Reactor

This paper presents a strategy for measuring sin^2 theta_W to ~1% at a
reactor-based experiment, using antineutrinos electron elastic scattering. This
error is comparable to the NuTeV, SLAC E158, and APV results on sin^2 theta_W,
but with substantially different contributions to the systematics. An improved
method for identifying antineutrino proton events, which serve both as a
background and as a normalization sample, is described. The measurement can be
performed using the near detector of the presently proposed reactor-based
oscillation experiments. We conclude that an absolute error of delta(sin^2
theta_W)=0.0019 may be achieved.Comment: To be Submitted to Phys. Rev.

### Electronic device increases threshold sensitivity and removes noise from FM communications receiver

Threshold extension device connected between demodulator output and filter output minimizes clicking noise. Device consists of click-eliminating signal transfer channel with follow-and-hold circuit and detector for sensing click impulses. Final output consists of signal plus low level noise without high amplitude impulses

### Confronting the short-baseline oscillation anomalies with a single sterile neutrino and non-standard matter effects

We examine the MiniBooNE neutrino, MiniBooNE antineutrino and LSND
antineutrino data sets in a two-neutrino
$\stackrel{\tiny{(-)}}{\nu}_{\mu}\rightarrow\stackrel{\tiny{(-)}}{\nu}_e$
oscillation approximation subject to non-standard matter effects. We assume
those effects can be parametrized by an $L$-independent effective potential,
$V_s=\pm A_s$, experienced only by an intermediate, non-weakly-interacting
(sterile) neutrino state which we assume participates in the oscillation, where
$+/-$ corresponds to neutrino/antineutrino propagation. We discuss the
mathematical framework in which such oscillations arise in detail, and derive
the relevant oscillation probability as a function of the vacuum oscillation
parameters $\Delta m^2$ and $\sin^22\theta_{\mu e}$, and the matter effect
parameter $A_s$. We are able to successfully fit all three data sets, including
the MiniBooNE low energy excess, with the following best-fit model parameters:
$\Delta m^2=0.47$ eV$^2$, $\sin^22\theta_{\mu e}=0.010$, and
$A_s=2.0\times10^{-10}$ eV. The $\chi^2$-probability for the best fit
corresponds to 21.6%, to be compared to 6.8% for a fit where $A_s$ has been set
to zero, corresponding to a (3+1) sterile neutrino oscillation model. We find
that the compatibility between the three data sets corresponds to 17.4%, to be
compared to 2.3% for $A_s=0$. Finally, given the fit results, we examine
consequences for reactor, solar, and atmospheric oscillations. For this paper,
the presented model is empirically driven, but the results obtained can be
directly used to investigate various phenomenological interpretations such as
non-standard matter effects.Comment: 19 pages, 11 figures, 1 tabl

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