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We review standard subtraction, as a method to compute cross sections at NNLO accuracy.

High Energy Physics - Phenomenology · Physics 2009-11-11 Vittorio Del Duca , Gabor Somogyi , Zoltan Trocsanyi

Combining several independent measurements of the same physical quantity is one of the most important tasks in metrology. Small samples, biased input estimates, not always adequate reported uncertainties, and unknown error distribution make…

Data Analysis, Statistics and Probability · Physics 2026-04-22 Zinovy Malkin

A fast algorithm for counting intersections of two normal curves on a triangulated surface is proposed. It yields a convenient way for treating mapping class groups of punctured surfaces by presenting mapping classes by matrices, and the…

Geometric Topology · Mathematics 2021-10-12 Ivan Dynnikov

A general method for calculating \NLO cross sections in perturbative QCD is presented. The algorithm is worked out for calculating $N$-jet cross sections in hadron-hadron collisions. The generalization of the scheme to performing…

High Energy Physics - Phenomenology · Physics 2009-10-30 Zoltán Nagy , Zoltán Trócsányi

As an alternative to the popular balanced truncation method, the cross Gramian matrix induces a class of balancing model reduction techniques. Besides the classical computation of the cross Gramian by a Sylvester matrix equation, an…

Optimization and Control · Mathematics 2016-06-14 Christian Himpe , Mario Ohlberger

Two methods to reduce the CPU time needed for the numerical evaluation of cross-sections and similar quantities are discussed.

High Energy Physics - Phenomenology · Physics 2007-05-23 T. Hahn

A method is developed to calculate collision probability in this paper. Based on the encounter geometric features of space objects, it is reasonable to separate the radial orbital motions from that in the cross section for most encounter…

Instrumentation and Methods for Astrophysics · Physics 2015-06-18 Xiaoli Xu , Yongqing Xiong

An MT2 calculation algorithm is described. It is shown to achieve better precision than the fastest and most popular existing bisection-based methods. Most importantly, it is also the first algorithm to be able to reliably calculate…

High Energy Physics - Phenomenology · Physics 2021-02-12 Christopher G. Lester , Benjamin Nachman

Over the past decades, various methods for comparing the means of two log-normal have been proposed. Some of them are differing in terms of how the statistic test adjust to accept or to reject the null hypothesis. In this study, a new…

Statistics Theory · Mathematics 2014-05-20 Kamel Abdollahnezhad , M. Babanezhad , Ali Akbar Jafari

We apply the theory of parton-parton total cross sections at large ``s", due to Lipatov and collaborators, to compute the inclusive cross section for jets which accompany a large ``s" parton scattering process.

High Energy Physics - Phenomenology · Physics 2009-10-22 Vittorio Del Duca , Michael E. Peskin , Wai-Keung Tang

The calculations of the double parton scattering cross sections are discussed. It is shown that the commonly used factorised formula is valid only in the limit of low cross sections. The applicability of this approximation is studied with a…

High Energy Physics - Phenomenology · Physics 2017-03-14 Rafał Staszewski

We derive in-medium PROTON-PROTON cross sections in a microscopic model based upon the Bonn nucleon-nucleon potential and the Dirac-Brueckner approach for nuclear matter. We demonstrate the difference between proton-proton and…

Nuclear Theory · Physics 2008-11-26 G. Q. Li , R. Machleidt

Calculated fusion-evaporation cross sections from five different codes are compared to experimental data. The present comparison extents over a large range of nuclei and isotopic chains to investigate the evolution of experimental and…

Nuclear Experiment · Physics 2018-03-14 B. Blank , G. Canchel , F. Seis , P. Delahaye

In this talk we report on the state of the art on the calculation of cross section at next-to-next-to-leading (NNLO) accuracy.

High Energy Physics - Phenomenology · Physics 2017-08-23 V. Del Duca , G. Somogyi , Z. Trocsanyi

This is an up-to-date introduction to, and overview of, marginal likelihood computation for model selection and hypothesis testing. Computing normalizing constants of probability models (or ratio of constants) is a fundamental issue in many…

Computation · Statistics 2023-02-13 Fernando Llorente , Luca Martino , David Delgado , Javier Lopez-Santiago

Counting the number of permutations of a given total displacement is equivalent to counting weighted Motzkin paths of a given area (Guay-Paquet and Petersen, 2014). The former combinatorial problem is still open. In this work, we show that…

Data Structures and Algorithms · Computer Science 2020-08-27 Andreas Bärtschi , Barbara Geissmann , Daniel Graf , Tomas Hruz , Paolo Penna , Thomas Tschager

This paper proposes an algorithm for computing regularized solutions to linear rational expectations models. The algorithm allows for regularization cross-sectionally as well as across frequencies. A variety of numerical examples illustrate…

Econometrics · Economics 2020-10-28 Majid M. Al-Sadoon

We present four new mathematical methods, two exact and two approximate, along with open-source software, to compute the cdf, pdf and inverse cdf of the generalized chi-square distribution. Some methods are geared for speed, while others…

Computation · Statistics 2025-02-28 Abhranil Das

We propose a novel approach to the problem of mutual information (MI) estimation via introducing a family of estimators based on normalizing flows. The estimator maps original data to the target distribution, for which MI is easier to…

Machine Learning · Computer Science 2024-05-28 Ivan Butakov , Alexander Tolmachev , Sofia Malanchuk , Anna Neopryatnaya , Alexey Frolov

This note introduces the method of cross-conformal prediction, which is a hybrid of the methods of inductive conformal prediction and cross-validation, and studies its validity and predictive efficiency empirically.

Machine Learning · Statistics 2012-08-06 Vladimir Vovk
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