ARGUS distribution

A ARGUS distribution is a probability distribution ...

• See: Variance, Cumulative distribution function, Probability density function.

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References

2016

• (Wikipedia, 2016) ⇒ https://www.wikiwand.com/en/ARGUS_distribution Retrieved 2016-07-20
  • In physics, the ARGUS distribution, named after the particle physics experiment ARGUS, is the probability distribution of the reconstructed invariant mass of a decayed particle candidate in continuum background.

    Definition:

    The probability density function (pdf) of the ARGUS distribution is:

[math]\displaystyle{ f(x; \chi, c ) = \frac{\chi^3}{\sqrt{2\pi}\,\Psi(\chi)} \cdot \frac{x}{c^2} \sqrt{1-\frac{x^2}{c^2}} \exp\bigg\{ -\frac12 \chi^2\Big(1-\frac{x^2}{c^2}\Big) \bigg\}, }[/math]

for 0 ≤ x < c. Here χ, and c are parameters of the distribution and

[math]\displaystyle{ \Psi(\chi) = \Phi(\chi)- \chi \phi( \chi ) - \tfrac{1}{2} , }[/math]

and Φ(·), ϕ(·) are the cumulative distribution and probability density functions of the standard normal distribution, respectively.

• (Wikipedia, 2016) ⇒ http://www.wikiwand.com/en/ARGUS_(experiment)
  • The ARGUS experiment was a particle physics experiment that ran at the electron-positron collider ring DORIS II at DESY. It is the first experiment that observed the mixing of the B mesons (in 1987).

    The ARGUS detector was a hermetic detector with 90% coverage of the full solid angle. It had drift chambers, a time-of-flight system, an electromagnetic calorimeter and a muon chamber system.

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