Statistical Methods for Data Analysis in Particle Physics by Luca Lista

By Luca Lista

This concise set of course-based notes offers the reader with the most thoughts and instruments to accomplish statistical research of experimental facts, specifically within the box of high-energy physics (HEP). First, an advent to likelihood idea and easy records is given, customarily as reminder from complex undergraduate stories, but additionally in view to obviously distinguish the Frequentist as opposed to Bayesian methods and interpretations in next purposes. extra complex ideas and functions are steadily brought, culminating within the bankruptcy on top limits as many functions in HEP predicament speculation trying out, the place frequently the most aim is to supply larger and higher limits which will have the capacity to distinguish finally among competing hypotheses or to rule out a few of them altogether. Many labored examples can help beginners to the sphere and graduate scholars to appreciate the pitfalls in utilizing theoretical techniques to genuine data.

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11 The Binomial Process A binomial process consists of performing a given number N of independent Bernoulli extractions all having the same probability p. This could be implemented for instance by randomly extracting a (red or white) ball in a set of balls from a basket containing a fraction p of red balls; after each extraction, the extracted ball is placed again in the basket and the extraction is repeated N times. 7 shows the possible outcomes of a binomial process as subsequent random extractions of a single ball.

9 where the parameter ˛ has been varied, while the parameters of the Gaussian core have been fixed at D 0, D 1 and the power-law exponent was fixed at n D 2. 05 0 -30 -25 -20 Fig. 3 Landau Distribution A model that describes the fluctuations in energy loss of particles in a thin layers of matter is due to Landau [3, 4]. x/ D 1 Z 1 t log t xt e 0 sin. 57) Examples of Landau distributions are shown in Fig. 10 for different values of fixing D 0. This distribution is also used as empiric model for asymmetric distributions.

1, occurs because the decomposition of the range of possible values of a random variable x into equally probable elementary cases is not possible without ambiguity. The ambiguity arises because of the continuum nature of the problem. We considered in Sect. x2 / (Y is taken as a monotonic function of x). This makes the choice of a continuum variable on which to find equally probable intervals of the same size an arbitrary choice. 1 Definition of Probability Distribution Function The concept of probability distribution seen in Sect.

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Statistical Methods for Data Analysis in Particle Physics by Luca Lista
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